Dr. Laurie Starkey brings in her love of organic chemistry and helps students learn through visual models and real world examples. Focusing on Chemical Structures, she covers topics from Alkanes to Aldehydes and Amines. This course is crucial for students who wish to excel in Organic Chemistry in order to satisfy their degree or pre-medical requirements. Lessons go in depth and are followed with numerous examples similar to those found on organic chemistry exams and qualifying tests. Additional topics include everything from Stereochemistry to Nomenclature and Spectroscopy. Dr. Laurie Starkey is also the author of “Introduction to Strategies for Organic Synthesis” (Wiley) and earned her Ph.D. in Chemistry from UCLA. She has been teaching Organic Chemistry at the university level for over 15 years and most recently won the 2013 Provost's Award for Excellence in Teaching, Cal Poly Pomona's highest teaching award.
| Part I |
| |
Introduction and Drawing Structures |
49:51 |
| | |
Intro |
0:00 | |
| | |
Organic Chemistry |
0:07 | |
| | |
| Organic |
0:08 | |
| | |
| Inorganic |
0:26 | |
| | |
| Examples of Organic Compounds |
1:16 | |
| | |
Review Some Chemistry Basics |
5:23 | |
| | |
| Electrons |
5:42 | |
| | |
| Orbitals (s,p,d,f) |
6:12 | |
| | |
Review Some Chemistry Basics |
7:35 | |
| | |
| Elements & Noble Gases |
7:36 | |
| | |
| Atom & Valance Shell |
8:47 | |
| | |
Review Some Chemistry Basics |
11:33 | |
| | |
| Electronegative Elements |
11:34 | |
| | |
| Which Is More Electronegative, C or N? |
13:45 | |
| | |
Ionic & Covalent Bonds |
14:07 | |
| | |
| Ionic Bonds |
14:08 | |
| | |
| Covalent Bonds |
16:17 | |
| | |
Polar Covalent Bonds |
19:35 | |
| | |
| Polar Covalent Bonds & Electronegativities |
19:37 | |
| | |
Polarity of Molecules |
22:56 | |
| | |
| Linear molecule |
23:07 | |
| | |
| Bent Molecule |
23:53 | |
| | |
| No Polar Bonds |
24:21 | |
| | |
| Ionic |
24:52 | |
| | |
Line Drawings |
26:36 | |
| | |
| Line Drawing Overview |
26:37 | |
| | |
| Line Drawing: Example 1 |
27:12 | |
| | |
| Line Drawing: Example 2 |
29:14 | |
| | |
| Line Drawing: Example 3 |
29:51 | |
| | |
| Line Drawing: Example 4 |
30:34 | |
| | |
| Line Drawing: Example 5 |
31:21 | |
| | |
| Line Drawing: Example 6 |
32:41 | |
| | |
Diversity of Organic Compounds |
33:57 | |
| | |
| Diversity of Organic Compounds |
33:58 | |
| | |
Diversity of Organic Compounds, cont. |
39:16 | |
| | |
| Diversity of Organic Compounds, cont. |
39:17 | |
| | |
Examples of Polymers |
45:26 | |
| | |
| Examples of Polymers |
45:27 | |
| |
Lewis Structures & Resonance |
44:25 |
| | |
Intro |
0:00 | |
| | |
Lewis Structures |
0:08 | |
| | |
| How to Draw a Lewis Structure |
0:09 | |
| | |
| Examples |
2:20 | |
| | |
Lewis Structures |
6:25 | |
| | |
| Examples: Lewis Structure |
6:27 | |
| | |
| Determining Formal Charges |
8:48 | |
| | |
| Example: Determining Formal Charges for Carbon |
10:11 | |
| | |
| Example: Determining Formal Charges for Oxygen |
11:02 | |
| | |
Lewis Structures |
12:08 | |
| | |
| Typical, Stable Bonding Patterns: Hydrogen |
12:11 | |
| | |
| Typical, Stable Bonding Patterns: Carbon |
12:58 | |
| | |
| Typical, Stable Bonding Patterns: Nitrogen |
13:25 | |
| | |
| Typical, Stable Bonding Patterns: Oxygen |
13:54 | |
| | |
| Typical, Stable Bonding Patterns: Halogen |
14:16 | |
| | |
Lewis Structure Example |
15:17 | |
| | |
| Drawing a Lewis Structure for Nitric Acid |
15:18 | |
| | |
Resonance |
21:58 | |
| | |
| Definition of Resonance |
22:00 | |
| | |
| Delocalization |
22:07 | |
| | |
| Hybrid Structure |
22:38 | |
| | |
Rules for Estimating Stability of Resonance Structures |
26:04 | |
| | |
| Rule Number 1: Complete Octets |
26:10 | |
| | |
| Rule Number 2: Separation of Charge |
28:13 | |
| | |
| Rule Number 3: Negative and Positive Charges |
30:02 | |
| | |
| Rule Number 4: Equivalent |
31:06 | |
| | |
Looking for Resonance |
32:09 | |
| | |
| Lone Pair Next to a p Bond |
32:10 | |
| | |
| Vacancy Next to a p Bond |
33:53 | |
| | |
| p Bond Between Two Different Elements |
35:00 | |
| | |
| Other Type of Resonance: Benzene |
36:06 | |
| | |
Resonance Example |
37:29 | |
| | |
| Draw and Rank Resonance Forms |
37:30 | |
| |
Acid-Base Reactions |
67:46 |
| | |
Intro |
0:00 | |
| | |
Acid-Base Reactions |
0:07 | |
| | |
| Overview |
0:08 | |
| | |
| Lewis Acid and Lewis Base |
0:30 | |
| | |
| Example 1: Lewis Acid and Lewis Base |
1:53 | |
| | |
| Example 2: Lewis Acid and Lewis Base |
3:04 | |
| | |
Acid-base Reactions |
4:54 | |
| | |
| Bonsted-Lowry Acid and Bonsted-Lowry Base |
4:56 | |
| | |
| Proton Transfer Reaction |
5:36 | |
| | |
Acid-Base Equilibrium |
8:14 | |
| | |
| Two Acids in Competition = Equilibrium |
8:15 | |
| | |
| Example: Which is the Stronger Acid? |
8:40 | |
| | |
Periodic Trends for Acidity |
12:40 | |
| | |
| Across Row |
12:41 | |
| | |
Periodic Trends for Acidity |
19:48 | |
| | |
| Energy Diagram |
19:50 | |
| | |
Periodic Trends for Acidity |
21:28 | |
| | |
| Down a Family |
21:29 | |
| | |
Inductive Effects on Acidity |
25:52 | |
| | |
| Example: Which is the Stronger Acid? |
25:54 | |
| | |
| Other Electron-Withdrawing Group (EWG) |
30:37 | |
| | |
Inductive Effects on Acidity |
32:55 | |
| | |
| Inductive Effects Decrease with Distance |
32:56 | |
| | |
Resonance Effects on Acidity |
36:35 | |
| | |
| Examples of Resonance Effects on Acidity |
36:36 | |
| | |
Resonance Effects on Acidity |
41:15 | |
| | |
| Small and Large Amount of Resonance |
41:17 | |
| | |
Acid-Base Example |
43:10 | |
| | |
| Which is Most Acidic? Which is the Least Acidic? |
43:12 | |
| | |
Acid-Base Example |
49:26 | |
| | |
| Which is the Stronger Base? |
49:27 | |
| | |
Acid-Base Example |
53:58 | |
| | |
| Which is the Strongest Base? |
53:59 | |
| | |
Common Acids/Bases |
60:45 | |
| | |
| Common Acids/Bases |
60:46 | |
| | |
| Example: Determine the Direction of Equilibrium |
64:51 | |
| |
Structures and Properties of Organic Molecules |
83:35 |
| | |
Intro |
0:00 | |
| | |
Orbitals and Bonding |
0:20 | |
| | |
| Atomic Orbitals (AO) |
0:21 | |
| | |
Molecular Orbitals (MO) |
1:46 | |
| | |
| Definition of Molecular Orbitals |
1:47 | |
| | |
| Example 1: Formation of Sigma Bond and Molecular Orbitals |
2:20 | |
| | |
Molecular Orbitals (MO) |
5:25 | |
| | |
| Example 2: Formation of Pi Bond |
5:26 | |
| | |
Overlapping E Levels of MO's |
7:28 | |
| | |
| Energy Diagram |
7:29 | |
| | |
Electronic Transitions |
9:18 | |
| | |
| Electronic Transitions |
9:23 | |
| | |
Hybrid Orbitals |
12:04 | |
| | |
| Carbon AO |
12:06 | |
| | |
| Hybridization |
13:51 | |
| | |
Hybrid Orbitals |
15:02 | |
| | |
| Examples of Hybrid Orbitals |
15:05 | |
| | |
| Example: Assign Hybridization |
20:31 | |
| | |
3-D Sketches |
24:05 | |
| | |
| sp3 |
24:24 | |
| | |
| sp2 |
25:28 | |
| | |
| sp |
27:41 | |
| | |
3-D Sketches of Molecules |
29:07 | |
| | |
| 3-D Sketches of Molecules 1 |
29:08 | |
| | |
| 3-D Sketches of Molecules 2 |
32:29 | |
| | |
| 3-D Sketches of Molecules 3 |
35:36 | |
| | |
3D Sketch |
37:20 | |
| | |
| How to Draw 3D Sketch |
37:22 | |
| | |
| Example 1: Drawing 3D Sketch |
37:50 | |
| | |
| Example 2: Drawing 3D Sketch |
43:04 | |
| | |
Hybridization and Resonance |
46:06 | |
| | |
| Example: Hybridization and Resonance |
46:08 | |
| | |
Physical Properties |
49:55 | |
| | |
| Water Solubility, Boiling Points, and Intermolecular Forces |
49:56 | |
| | |
| Types of 'Nonbonding' Interactions |
51:47 | |
| | |
Dipole-Dipole |
52:37 | |
| | |
| Definition of Dipole-Dipole |
52:39 | |
| | |
| Example: Dipole-Dipole Bonding |
53:27 | |
| | |
Hydrogen Bonding |
57:14 | |
| | |
| Definition of Hydrogen Bonding |
57:15 | |
| | |
| Example: Hydrogen Bonding |
58:05 | |
| | |
Van Der Waals/ London Forces |
63:11 | |
| | |
| Van Der Waals/ London Forces |
63:12 | |
| | |
| Example: Van Der Waals/ London Forces |
64:59 | |
| | |
Water Solubility |
68:32 | |
| | |
| Water Solubility |
68:34 | |
| | |
| Example: Water Solubility |
69:05 | |
| | |
| Example: Acetone |
71:29 | |
| | |
Isomerism |
73:51 | |
| | |
| Definition of Isomers |
73:53 | |
| | |
| Constitutional Isomers and Example |
74:17 | |
| | |
| Stereoisomers and Example |
75:34 | |
| | |
Introduction to Functional Groups |
77:06 | |
| | |
| Functional Groups: Example, Abbreviation, and Name |
77:07 | |
| | |
Introduction to Functional Groups |
80:48 | |
| | |
| Functional Groups: Example, Abbreviation, and Name |
80:49 | |
| |
Alkane Structures |
73:38 |
| | |
Intro |
0:00 | |
| | |
Nomenclature of Alkanes |
0:12 | |
| | |
| Nomenclature of Alkanes and IUPAC Rules |
0:13 | |
| | |
| Examples: Nomenclature of Alkanes |
4:38 | |
| | |
Molecular Formula and Degrees of Unsaturation (DU) |
17:24 | |
| | |
| Alkane Formula |
17:25 | |
| | |
| Example: Heptane |
17:58 | |
| | |
| Why '2n+2' Hydrogens? |
18:35 | |
| | |
| Adding a Ring |
19:20 | |
| | |
| Adding a p Bond |
19:42 | |
| | |
| Example 1: Determine Degrees of Unsaturation (DU) |
20:17 | |
| | |
| Example 2: Determine Degrees of Unsaturation (DU) |
21:35 | |
| | |
| Example 3: Determine DU of Benzene |
23:30 | |
| | |
Molecular Formula and Degrees of Unsaturation (DU) |
24:41 | |
| | |
| Example 4: Draw Isomers |
24:42 | |
| | |
Physical properties of Alkanes |
29:17 | |
| | |
| Physical properties of Alkanes |
29:18 | |
| | |
Conformations of Alkanes |
33:40 | |
| | |
| Conformational Isomers |
33:42 | |
| | |
| Conformations of Ethane: Eclipsed and Staggered |
34:40 | |
| | |
| Newman Projection of Ethane |
36:15 | |
| | |
Conformations of Ethane |
40:38 | |
| | |
| Energy and Degrees Rotated Diagram |
40:41 | |
| | |
Conformations of Butane |
42:28 | |
| | |
| Butane |
42:29 | |
| | |
| Newman Projection of Butane |
43:35 | |
| | |
Conformations of Butane |
44:25 | |
| | |
| Energy and Degrees Rotated Diagram |
44:30 | |
| | |
Cycloalkanes |
51:26 | |
| | |
| Cyclopropane and Cyclobutane |
51:27 | |
| | |
| Cyclopentane |
53:56 | |
| | |
Cycloalkanes |
54:56 | |
| | |
| Cyclohexane: Chair, Boat, and Twist Boat Conformations |
54:57 | |
| | |
Drawing a Cyclohexane Chair |
57:58 | |
| | |
| Drawing a Cyclohexane Chair |
57:59 | |
| | |
| Newman Projection of Cyclohexane |
62:14 | |
| | |
Cyclohexane Chair Flips |
64:06 | |
| | |
| Axial and Equatorial Groups |
64:10 | |
| | |
| Example: Chair Flip on Methylcyclohexane |
66:44 | |
| | |
Cyclohexane Conformations Example |
69:01 | |
| | |
| Chair Conformations of cis-1-t-butyl-4-methylcyclohexane |
69:02 | |
| |
Stereochemistry |
100:54 |
| | |
Intro |
0:00 | |
| | |
Stereochemistry |
0:10 | |
| | |
| Isomers |
0:11 | |
| | |
Stereoisomer Examples |
1:30 | |
| | |
| Alkenes |
1:31 | |
| | |
| Cycloalkanes |
2:35 | |
| | |
Stereoisomer Examples |
4:00 | |
| | |
| Tetrahedral Carbon: Superimposable (Identical) |
4:01 | |
| | |
| Tetrahedral Carbon: Non-Superimposable (Stereoisomers) |
5:18 | |
| | |
Chirality |
7:18 | |
| | |
| Stereoisomers |
7:19 | |
| | |
| Chiral |
8:05 | |
| | |
| Achiral |
8:29 | |
| | |
| Example: Achiral and Chiral |
8:45 | |
| | |
Chirality |
20:11 | |
| | |
| Superimposable, Non-Superimposable, Chiral, and Achiral |
20:12 | |
| | |
Nomenclature |
23:00 | |
| | |
| Cahn-Ingold-Prelog Rules |
23:01 | |
| | |
Nomenclature |
29:39 | |
| | |
| Example 1: Nomenclature |
29:40 | |
| | |
| Example 2: Nomenclature |
31:49 | |
| | |
| Example 3: Nomenclature |
33:24 | |
| | |
| Example 4: Nomenclature |
35:39 | |
| | |
Drawing Stereoisomers |
36:58 | |
| | |
| Drawing (S)-2-bromopentane |
36:59 | |
| | |
| Drawing the Enantiomer of (S)-2-bromopentane: Method 1 |
38:47 | |
| | |
| Drawing the Enantiomer of (S)-2-bromopentane: Method 2 |
39:35 | |
| | |
Fischer Projections |
41:47 | |
| | |
| Definition of Fischer Projections |
41:49 | |
| | |
| Drawing Fischer Projection |
43:43 | |
| | |
| Use of Fisher Projection: Assigning Configuration |
49:13 | |
| | |
Molecules with Two Chiral Carbons |
51:49 | |
| | |
| Example A |
51:42 | |
| | |
| Drawing Enantiomer of Example A |
53:26 | |
| | |
| Fischer Projection of A |
54:25 | |
| | |
Drawing Stereoisomers, cont. |
59:40 | |
| | |
| Drawing Stereoisomers Examples |
59:41 | |
| | |
| Diastereomers |
61:48 | |
| | |
Drawing Stereoisomers |
66:37 | |
| | |
| Draw All Stereoisomers of 2,3-dichlorobutane |
66:38 | |
| | |
Molecules with Two Chiral Centers |
70:22 | |
| | |
| Draw All Stereoisomers of 2,3-dichlorobutane, cont. |
70:23 | |
| | |
Optical Activity |
74:10 | |
| | |
| Chiral Molecules |
74:11 | |
| | |
| Angle of Rotation |
74:51 | |
| | |
| Achiral Species |
76:46 | |
| | |
Physical Properties of Stereoisomers |
77:11 | |
| | |
| Enantiomers |
77:12 | |
| | |
| Diastereomers |
78:01 | |
| | |
| Example |
78:26 | |
| | |
Physical Properties of Stereoisomers |
83:05 | |
| | |
| When Do Enantiomers Behave Differently? |
83:06 | |
| | |
Racemic Mixtures |
88:18 | |
| | |
| Racemic Mixtures |
88:21 | |
| | |
| Resolution |
89:52 | |
| | |
Unequal Mixtures of Enantiomers |
92:54 | |
| | |
| Enantiomeric Excess (ee) |
92:55 | |
| | |
Unequal Mixture of Enantiomers |
94:43 | |
| | |
| Unequal Mixture of Enantiomers |
94:44 | |
| | |
| Example: Finding ee |
96:38 | |
| | |
| Example: Percent of Composition |
99:46 | |
| |
Nomenclature |
113:47 |
| | |
Intro |
0:00 | |
| | |
Cycloalkane Nomenclature |
0:17 | |
| | |
| Cycloalkane Nomenclature and Examples |
0:18 | |
| | |
Alkene Nomenclature |
6:28 | |
| | |
| Alkene Nomenclature and Examples |
6:29 | |
| | |
Alkene Nomenclature: Stereochemistry |
15:07 | |
| | |
| Alkenes With Two Groups: Cis & Trans |
15:08 | |
| | |
| Alkenes With Greater Than Two Groups: E & Z |
18:26 | |
| | |
Alkyne Nomenclature |
24:46 | |
| | |
| Alkyne Nomenclature and Examples |
24:47 | |
| | |
| Alkane Has a Higher Priority Than Alkyne |
28:25 | |
| | |
Alcohol Nomenclature |
29:24 | |
| | |
| Alcohol Nomenclature and Examples |
29:25 | |
| | |
| Alcohol FG Has Priority Over Alkene/yne |
33:41 | |
| | |
Ether Nomenclature |
36:32 | |
| | |
| Ether Nomenclature and Examples |
36:33 | |
| | |
Amine Nomenclature |
42:59 | |
| | |
| Amine Nomenclature and Examples |
43:00 | |
| | |
Amine Nomenclature |
49:45 | |
| | |
| Primary, Secondary, Tertiary, Quaternary Salt |
49:46 | |
| | |
Aldehyde Nomenclature |
51:37 | |
| | |
| Aldehyde Nomenclature and Examples |
51:38 | |
| | |
Ketone Nomenclature |
58:43 | |
| | |
| Ketone Nomenclature and Examples |
58:44 | |
| | |
Aromatic Nomenclature |
65:02 | |
| | |
| Aromatic Nomenclature and Examples |
65:03 | |
| | |
Aromatic Nomenclature, cont. |
69:09 | |
| | |
| Ortho, Meta, and Para |
69:10 | |
| | |
Aromatic Nomenclature, cont. |
73:27 | |
| | |
| Common Names for Simple Substituted Aromatic Compounds |
73:28 | |
| | |
Carboxylic Acid Nomenclature |
76:35 | |
| | |
| Carboxylic Acid Nomenclature and Examples |
76:36 | |
| | |
Carboxylic Acid Derivatives |
82:28 | |
| | |
| Carboxylic Acid Derivatives |
82:42 | |
| | |
| General Structure |
83:10 | |
| | |
Acid Halide Nomenclature |
84:48 | |
| | |
| Acid Halide Nomenclature and Examples |
84:49 | |
| | |
Anhydride Nomenclature |
88:10 | |
| | |
| Anhydride Nomenclature and Examples |
88:11 | |
| | |
Ester Nomenclature |
92:50 | |
| | |
| Ester Nomenclature |
92:51 | |
| | |
| Carboxylate Salts |
98:51 | |
| | |
Amide Nomenclature |
100:02 | |
| | |
| Amide Nomenclature and Examples |
100:03 | |
| | |
Nitrile Nomenclature |
105:22 | |
| | |
| Nitrile Nomenclature and Examples |
105:23 | |
| |
Chemical Reactions |
51:01 |
| | |
Intro |
0:00 | |
| | |
Chemical Reactions |
0:06 | |
| | |
| Reactants and Products |
0:07 | |
| | |
| Thermodynamics |
0:50 | |
| | |
| Equilibrium Constant |
1:06 | |
| | |
| Equation |
2:35 | |
| | |
| Organic Reaction |
3:05 | |
| | |
Energy vs. Progress of Rxn Diagrams |
3:48 | |
| | |
| Exothermic Reaction |
4:02 | |
| | |
| Endothermic Reaction |
6:54 | |
| | |
Estimating ΔH rxn |
9:15 | |
| | |
| Bond Breaking |
10:03 | |
| | |
| Bond Formation |
10:25 | |
| | |
| Bond Strength |
11:35 | |
| | |
| Homolytic Cleavage |
11:59 | |
| | |
| Bond Dissociation Energy (BDE) Table |
12:29 | |
| | |
| BDE for Multiple Bonds |
14:32 | |
| | |
| Examples |
17:35 | |
| | |
Kinetics |
20:35 | |
| | |
| Kinetics |
20:36 | |
| | |
| Examples |
21:49 | |
| | |
Reaction Rate Variables |
23:15 | |
| | |
| Reaction Rate Variables |
23:16 | |
| | |
| Increasing Temperature, Increasing Rate |
24:08 | |
| | |
| Increasing Concentration, Increasing Rate |
25:39 | |
| | |
| Decreasing Energy of Activation, Increasing Rate |
27:49 | |
| | |
Two-Step Mechanisms |
30:06 | |
| | |
| E vs. POR Diagram (2-step Mechanism) |
30:07 | |
| | |
Reactive Intermediates |
33:03 | |
| | |
| Reactive Intermediates |
33:04 | |
| | |
| Example: A Carbocation |
35:20 | |
| | |
Carbocation Stability |
37:24 | |
| | |
| Relative Stability of Carbocation |
37:25 | |
| | |
| Alkyl groups and Hyperconjugation |
38:45 | |
| | |
Carbocation Stability |
41:57 | |
| | |
| Carbocation Stabilized by Resonance: Allylic |
41:58 | |
| | |
| Carbocation Stabilized by Resonance: Benzylic |
42:59 | |
| | |
| Overall Carbocation Stability |
44:05 | |
| | |
Free Radicals |
45:05 | |
| | |
| Definition and Examples of Free Radicals |
45:06 | |
| | |
Radical Mechanisms |
49:40 | |
| | |
| Example: Regular Arrow |
49:41 | |
| | |
| Example: Fish-Hook Arrow |
50:17 | |
| |
Free Radical Halogenation |
26:23 |
| | |
Intro |
0:00 | |
| | |
Free Radical Halogenation |
0:06 | |
| | |
| Free Radical Halogenation |
0:07 | |
| | |
| Mechanism: Initiation |
1:27 | |
| | |
| Mechanism: Propagation Steps |
2:21 | |
| | |
Free Radical Halogenation |
5:33 | |
| | |
| Termination Steps |
5:36 | |
| | |
| Example 1: Terminations Steps |
6:00 | |
| | |
| Example 2: Terminations Steps |
6:18 | |
| | |
| Example 3: Terminations Steps |
7:43 | |
| | |
| Example 4: Terminations Steps |
8:04 | |
| | |
Regiochemistry of Free Radical Halogenation |
9:32 | |
| | |
| Which Site/Region Reacts and Why? |
9:34 | |
| | |
| Bromination and Rate of Reaction |
14:03 | |
| | |
Regiochemistry of Free Radical Halogenation |
14:30 | |
| | |
| Chlorination |
14:31 | |
| | |
| Why the Difference in Selectivity? |
19:58 | |
| | |
Allylic Halogenation |
20:53 | |
| | |
| Examples of Allylic Halogenation |
20:55 | |
| |
Substitution Reactions |
108:05 |
| | |
Intro |
0:00 | |
| | |
Substitution Reactions |
0:06 | |
| | |
| Substitution Reactions Example |
0:07 | |
| | |
| Nucleophile |
0:39 | |
| | |
| Electrophile |
1:20 | |
| | |
| Leaving Group |
2:56 | |
| | |
| General Reaction |
4:13 | |
| | |
Substitution Reactions |
4:43 | |
| | |
| General Reaction |
4:46 | |
| | |
| Substitution Reaction Mechanisms: Simultaneous |
5:08 | |
| | |
| Substitution Reaction Mechanisms: Stepwise |
5:34 | |
| | |
SN2 Substitution |
6:21 | |
| | |
| Example of SN2 Mechanism |
6:22 | |
| | |
| SN2 Kinetics |
7:58 | |
| | |
Rate of SN2 |
9:10 | |
| | |
| Sterics Affect Rate of SN2 |
9:12 | |
| | |
| Rate of SN2 (By Type of RX) |
14:13 | |
| | |
SN2: E vs. POR Diagram |
17:26 | |
| | |
| E vs. POR Diagram |
17:27 | |
| | |
| Transition State (TS) |
18:24 | |
| | |
SN2 Transition State, Kinetics |
20:58 | |
| | |
| SN2 Transition State, Kinetics |
20:59 | |
| | |
| Hybridization of TS Carbon |
21:57 | |
| | |
| Example: Allylic LG |
23:34 | |
| | |
Stereochemistry of SN2 |
25:46 | |
| | |
| Backside Attack and Inversion of Stereochemistry |
25:48 | |
| | |
SN2 Summary |
29:56 | |
| | |
| Summary of SN2 |
29:58 | |
| | |
Predict Products (SN2) |
31:42 | |
| | |
| Example 1: Predict Products |
31:50 | |
| | |
| Example 2: Predict Products |
33:38 | |
| | |
| Example 3: Predict Products |
35:11 | |
| | |
| Example 4: Predict Products |
36:11 | |
| | |
| Example 5: Predict Products |
37:32 | |
| | |
SN1 Substitution Mechanism |
41:52 | |
| | |
| Is This Substitution? Could This Be an SN2 Mechanism? |
41:54 | |
| | |
SN1 Mechanism |
43:50 | |
| | |
| Two Key Steps: 1. Loss of LG |
43:53 | |
| | |
| Two Key Steps: 2. Addition of nu |
45:11 | |
| | |
SN1 Kinetics |
47:17 | |
| | |
| Kinetics of SN1 |
47:18 | |
| | |
| Rate of SN1 (By RX type) |
48:44 | |
| | |
SN1 E vs. POR Diagram |
49:49 | |
| | |
| E vs. POR Diagram |
49:51 | |
| | |
| First Transition Stage (TS-1) |
51:48 | |
| | |
| Second Transition Stage (TS-2) |
52:56 | |
| | |
Stereochemistry of SN1 |
53:44 | |
| | |
| Racemization of SN1 and Achiral Carbocation Intermediate |
53:46 | |
| | |
| Example |
54:29 | |
| | |
SN1 Summary |
58:25 | |
| | |
| Summary of SN1 |
58:26 | |
| | |
SN1 or SN2 Mechanisms? |
60:40 | |
| | |
| Example 1: SN1 or SN2 Mechanisms |
60:42 | |
| | |
| Example 2: SN1 or SN2 Mechanisms |
63:00 | |
| | |
| Example 3: SN1 or SN2 Mechanisms |
64:06 | |
| | |
| Example 4: SN1 or SN2 Mechanisms |
66:17 | |
| | |
SN1 Mechanism |
69:12 | |
| | |
| Three Steps of SN1 Mechanism |
69:13 | |
| | |
SN1 Carbocation Rearrangements |
74:50 | |
| | |
| Carbocation Rearrangements Example |
74:51 | |
| | |
SN1 Carbocation Rearrangements |
80:46 | |
| | |
| Alkyl Groups Can Also Shift |
80:48 | |
| | |
Leaving Groups |
84:26 | |
| | |
| Leaving Groups |
84:27 | |
| | |
| Forward or Reverse Reaction Favored? |
86:00 | |
| | |
Leaving Groups |
89:59 | |
| | |
| Making poor LG Better: Method 1 |
90:00 | |
| | |
Leaving Groups |
94:18 | |
| | |
| Making poor LG Better: Tosylate (Method 2) |
94:19 | |
| | |
Synthesis Problem |
98:15 | |
| | |
| Example: Provide the Necessary Reagents |
98:16 | |
| | |
Nucleophilicity |
101:10 | |
| | |
| What Makes a Good Nucleophile? |
101:11 | |
| | |
Nucleophilicity |
104:45 | |
| | |
| Periodic Trends: Across Row |
104:47 | |
| | |
| Periodic Trends: Down a Family |
106:46 | |
| |
Elimination Reactions |
71:43 |
| | |
Intro |
0:00 | |
| | |
Elimination Reactions: E2 Mechanism |
0:06 | |
| | |
| E2 Mechanism |
0:08 | |
| | |
| Example of E2 Mechanism |
1:01 | |
| | |
Stereochemistry of E2 |
4:48 | |
| | |
| Anti-Coplanar & Anti-Elimination |
4:50 | |
| | |
| Example 1: Stereochemistry of E2 |
5:34 | |
| | |
| Example 2: Stereochemistry of E2 |
10:39 | |
| | |
Regiochemistry of E2 |
13:04 | |
| | |
| Refiochemistry of E2 and Zaitsev's Rule |
13:05 | |
| | |
| Alkene Stability |
17:39 | |
| | |
Alkene Stability |
19:20 | |
| | |
| Alkene Stability Examples |
19:22 | |
| | |
| Example 1: Draw Both E2 Products and Select Major |
21:57 | |
| | |
| Example 2: Draw Both E2 Products and Select Major |
25:02 | |
| | |
SN2 Vs. E2 Mechanisms |
29:06 | |
| | |
| SN2 Vs. E2 Mechanisms |
29:07 | |
| | |
| When Do They Compete? |
30:34 | |
| | |
SN2 Vs. E2 Mechanisms |
31:23 | |
| | |
| Compare Rates |
31:24 | |
| | |
SN2 Vs. E2 Mechanisms |
36:34 | |
| | |
| t-BuBr: What If Vary Base? |
36:35 | |
| | |
| Preference for E2 Over SN2 (By RX Type) |
40:42 | |
| | |
E1 Elimination Mechanism |
41:51 | |
| | |
| E1 - Elimination Unimolecular |
41:52 | |
| | |
| E1 Mechanism: Step 1 |
44:14 | |
| | |
| E1 Mechanism: Step 2 |
44:48 | |
| | |
E1 Kinetics |
46:58 | |
| | |
| Rate = k[RCI] |
47:00 | |
| | |
| E1 Rate (By Type of Carbon Bearing LG) |
48:31 | |
| | |
E1 Stereochemistry |
49:49 | |
| | |
| Example 1: E1 Stereochemistry |
49:51 | |
| | |
| Example 2: E1 Stereochemistry |
52:31 | |
| | |
Carbocation Rearrangements |
55:57 | |
| | |
| Carbocation Rearrangements |
56:01 | |
| | |
| Product Mixtures |
57:20 | |
| | |
Predict the Product: SN2 vs. E2 |
59:58 | |
| | |
| Example 1: Predict the Product |
60:00 | |
| | |
| Example 2: Predict the Product |
62:10 | |
| | |
| Example 3: Predict the Product |
64:07 | |
| | |
Predict the Product: SN2 vs. E2 |
66:06 | |
| | |
| Example 4: Predict the Product |
66:07 | |
| | |
| Example 5: Predict the Product |
67:29 | |
| | |
| Example 6: Predict the Product |
67:51 | |
| | |
| Example 7: Predict the Product |
69:18 | |
| Part II |
| |
Alkenes |
36:39 |
| | |
Intro |
0:00 | |
| | |
Alkenes |
0:12 | |
| | |
| Definition and Structure of Alkenes |
0:13 | |
| | |
| 3D Sketch of Alkenes |
1:53 | |
| | |
| Pi Bonds |
3:48 | |
| | |
Alkene Stability |
4:57 | |
| | |
| Alkyl Groups Attached |
4:58 | |
| | |
| Trans & Cis |
6:20 | |
| | |
Alkene Stability |
8:42 | |
| | |
| Pi Bonds & Conjugation |
8:43 | |
| | |
| Bridgehead Carbons & Bredt's Rule |
10:22 | |
| | |
| Measuring Stability: Hydrogenation Reaction |
11:40 | |
| | |
Alkene Synthesis |
12:01 | |
| | |
| Method 1: E2 on Alkyl Halides |
12:02 | |
| | |
| Review: Stereochemistry |
16:17 | |
| | |
| Review: Regiochemistry |
16:50 | |
| | |
| Review: SN2 vs. E2 |
17:34 | |
| | |
Alkene Synthesis |
18:57 | |
| | |
| Method 2: Dehydration of Alcohols |
18:58 | |
| | |
| Mechanism |
20:08 | |
| | |
Alkene Synthesis |
23:26 | |
| | |
| Alcohol Dehydration |
23:27 | |
| | |
Example 1: Comparing Strong Acids |
26:59 | |
| | |
Example 2: Mechanism for Dehydration Reaction |
29:00 | |
| | |
Example 3: Transform |
32:50 | |
| |
Reactions of Alkenes |
128:44 |
| | |
Intro |
0:00 | |
| | |
Reactions of Alkenes |
0:05 | |
| | |
| Electrophilic Addition Reaction |
0:06 | |
| | |
Addition of HX |
2:02 | |
| | |
| Example: Regioselectivity & 2 Steps Mechanism |
2:03 | |
| | |
Markovnikov Addition |
5:30 | |
| | |
| Markovnikov Addition is Favored |
5:31 | |
| | |
| Graph: E vs. POR |
6:33 | |
| | |
Example |
8:29 | |
| | |
| Example: Predict and Consider the Stereochemistry |
8:30 | |
| | |
Hydration of Alkenes |
12:31 | |
| | |
| Acid-catalyzed Addition of Water |
12:32 | |
| | |
| Strong Acid |
14:20 | |
| | |
Hydration of Alkenes |
15:20 | |
| | |
| Acid-catalyzed Addition of Water: Mechanism |
15:21 | |
| | |
Hydration vs. Dehydration |
19:51 | |
| | |
| Hydration Mechanism is Exact Reverse of Dehydration |
19:52 | |
| | |
Example |
21:28 | |
| | |
| Example: Hydration Reaction |
21:29 | |
| | |
Alternative 'Hydration' Methods |
25:26 | |
| | |
| Oxymercuration-Demercuration |
25:27 | |
| | |
Oxymercuration Mechanism |
28:55 | |
| | |
| Mechanism of Oxymercuration |
28:56 | |
| | |
Alternative 'Hydration' Methods |
30:51 | |
| | |
| Hydroboration-Oxidation |
30:52 | |
| | |
Hydroboration Mechanism |
33:22 | |
| | |
| 1-step (concerted) |
33:23 | |
| | |
| Regioselective |
34:45 | |
| | |
| Stereoselective |
35:30 | |
| | |
Example |
35:58 | |
| | |
| Example: Hydroboration-Oxidation |
35:59 | |
| | |
Example |
40:42 | |
| | |
| Example: Predict the Major Product |
40:43 | |
| | |
Synthetic Utility of 'Alternate' Hydration Methods |
44:36 | |
| | |
| Example: Synthetic Utility of 'Alternate' Hydration Methods |
44:37 | |
| | |
Flashcards |
47:28 | |
| | |
| Tips On Using Flashcards |
47:29 | |
| | |
Bromination of Alkenes |
49:51 | |
| | |
| Anti-Addition of Br2 |
49:52 | |
| | |
Bromination Mechanism |
53:16 | |
| | |
| Mechanism of Bromination |
53:17 | |
| | |
Bromination Mechanism |
55:42 | |
| | |
| Mechanism of Bromination |
55:43 | |
| | |
Bromination: Halohydrin Formation |
58:54 | |
| | |
| Addition of other Nu: to Bromonium Ion |
58:55 | |
| | |
| Mechanism |
60:08 | |
| | |
Halohydrin: Regiochemistry |
63:55 | |
| | |
| Halohydrin: Regiochemistry |
63:56 | |
| | |
| Bromonium Ion Intermediate |
64:26 | |
| | |
Example |
69:28 | |
| | |
| Example: Predict Major Product |
69:29 | |
| | |
Example Cont. |
70:59 | |
| | |
| Example: Predict Major Product Cont. |
71:00 | |
| | |
Catalytic Hydrogenation of Alkenes |
73:19 | |
| | |
| Features of Catalytic Hydrogenation |
73:20 | |
| | |
Catalytic Hydrogenation of Alkenes |
74:48 | |
| | |
| Metal Surface |
74:49 | |
| | |
| Heterogeneous Catalysts |
75:29 | |
| | |
| Homogeneous Catalysts |
76:08 | |
| | |
Catalytic Hydrogenation of Alkenes |
77:44 | |
| | |
| Hydrogenation & Pi Bond Stability |
77:45 | |
| | |
| Energy Diagram |
79:22 | |
| | |
Catalytic Hydrogenation of Dienes |
80:40 | |
| | |
| Hydrogenation & Pi Bond Stability |
80:41 | |
| | |
| Energy Diagram |
83:31 | |
| | |
Example |
84:14 | |
| | |
| Example: Predict Product |
84:15 | |
| | |
Oxidation of Alkenes |
87:21 | |
| | |
| Redox Review |
87:22 | |
| | |
| Epoxide |
90:26 | |
| | |
| Diol (Glycol) |
90:54 | |
| | |
| Ketone/ Aldehyde |
91:13 | |
| | |
Epoxidation |
92:08 | |
| | |
| Epoxidation |
92:09 | |
| | |
| General Mechanism |
96:32 | |
| | |
Alternate Epoxide Synthesis |
97:38 | |
| | |
| Alternate Epoxide Synthesis |
97:39 | |
| | |
Dihydroxylation |
101:10 | |
| | |
| Dihydroxylation |
101:12 | |
| | |
| General Mechanism (Concerted Via Cycle Intermediate) |
102:38 | |
| | |
Ozonolysis |
104:22 | |
| | |
| Ozonolysis: Introduction |
104:23 | |
| | |
| Ozonolysis: Is It Good or Bad? |
105:05 | |
| | |
| Ozonolysis Reaction |
108:54 | |
| | |
Examples |
111:10 | |
| | |
| Example 1: Ozonolysis |
111:11 | |
| | |
| Example |
113:25 | |
| | |
Radical Addition to Alkenes |
115:05 | |
| | |
| Recall: Free-Radical Halogenation |
115:15 | |
| | |
| Radical Mechanism |
115:45 | |
| | |
| Propagation Steps |
118:01 | |
| | |
| Atom Abstraction |
118:30 | |
| | |
| Addition to Alkene |
119:11 | |
| | |
Radical Addition to Alkenes |
119:54 | |
| | |
| Markovnivok (Electrophilic Addition) & anti-Mark. (Radical Addition) |
119:55 | |
| | |
| Mechanism |
121:03 | |
| | |
Alkene Polymerization |
125:35 | |
| | |
| Example: Alkene Polymerization |
125:36 | |
| |
Alkynes |
73:19 |
| | |
Intro |
0:00 | |
| | |
Structure of Alkynes |
0:04 | |
| | |
| Structure of Alkynes |
0:05 | |
| | |
| 3D Sketch |
2:30 | |
| | |
| Internal and Terminal |
4:03 | |
| | |
Reductions of Alkynes |
4:36 | |
| | |
| Catalytic Hydrogenation |
4:37 | |
| | |
| Lindlar Catalyst |
5:25 | |
| | |
Reductions of Alkynes |
7:24 | |
| | |
| Dissolving Metal Reduction |
7:25 | |
| | |
Oxidation of Alkynes |
9:24 | |
| | |
| Ozonolysis |
9:25 | |
| | |
Reactions of Alkynes |
10:56 | |
| | |
| Addition Reactions: Bromination |
10:57 | |
| | |
Addition of HX |
12:24 | |
| | |
| Addition of HX |
12:25 | |
| | |
Addition of HX |
13:36 | |
| | |
| Addition of HX: Mechanism |
13:37 | |
| | |
Example |
17:38 | |
| | |
| Example: Transform |
17:39 | |
| | |
Hydration of Alkynes |
23:35 | |
| | |
| Hydration of Alkynes |
23:36 | |
| | |
Hydration of Alkynes |
26:47 | |
| | |
| Hydration of Alkynes: Mechanism |
26:49 | |
| | |
'Hydration' via Hydroboration-Oxidation |
32:57 | |
| | |
| 'Hydration' via Hydroboration-Oxidation |
32:58 | |
| | |
| Disiamylborane |
33:28 | |
| | |
| Hydroboration-Oxidation Cont. |
34:25 | |
| | |
Alkyne Synthesis |
36:17 | |
| | |
| Method 1: Alkyne Synthesis By Dehydrohalogenation |
36:19 | |
| | |
Alkyne Synthesis |
39:06 | |
| | |
| Example: Transform |
39:07 | |
| | |
Alkyne Synthesis |
41:21 | |
| | |
| Method 2 & Acidity of Alkynes |
41:22 | |
| | |
| Conjugate Bases |
43:06 | |
| | |
Preparation of Acetylide Anions |
49:55 | |
| | |
| Preparation of Acetylide Anions |
49:57 | |
| | |
Alkyne Synthesis |
53:40 | |
| | |
| Synthesis Using Acetylide Anions |
53:41 | |
| | |
Example 1: Transform |
57:04 | |
| | |
Example 2: Transform |
61:07 | |
| | |
Example 3: Transform |
66:22 | |
| |
Alcohols, Part I |
59:52 |
| | |
Intro |
0:00 | |
| | |
Alcohols |
0:11 | |
| | |
| Attributes of Alcohols |
0:12 | |
| | |
| Boiling Points |
2:00 | |
| | |
Water Solubility |
5:00 | |
| | |
| Water Solubility (Like Dissolves Like) |
5:01 | |
| | |
Acidity of Alcohols |
9:39 | |
| | |
| Comparison of Alcohols Acidity |
9:41 | |
| | |
Preparation of Alkoxides |
13:03 | |
| | |
| Using Strong Base Like Sodium Hydride |
13:04 | |
| | |
| Using Redox Reaction |
15:36 | |
| | |
Preparation of Alkoxides |
17:41 | |
| | |
| Using K° |
17:42 | |
| | |
| Phenols Are More Acidic Than Other Alcohols |
19:51 | |
| | |
Synthesis of Alcohols, ROH |
21:43 | |
| | |
| Synthesis of Alcohols from Alkyl Halides, RX (SN2 or SN1) |
21:44 | |
| | |
Synthesis of Alcohols, ROH |
25:08 | |
| | |
| Unlikely on 2° RX (E2 Favored) |
25:09 | |
| | |
| Impossible on 3° RX (E2) and Phenyl/Vinyl RX (N/R) |
25:47 | |
| | |
Synthesis of Alcohols, ROH |
26:26 | |
| | |
| SN1 with H2O 'Solvolysis' or 'Hydrolysis' |
26:27 | |
| | |
| Carbocation Can Rearrange |
29:00 | |
| | |
Synthesis of Alcohols, ROH |
30:08 | |
| | |
| Synthesis of Alcohols From Alkenes: Hydration |
30:09 | |
| | |
| Synthesis of Alcohols From Alkenes: Oxidation/Diol |
32:20 | |
| | |
Synthesis of Alcohols, ROH |
33:14 | |
| | |
| Synthesis of Alcohols From Ketones and Aldehydes |
33:15 | |
| | |
Organometallic Reagents: Preparation |
37:03 | |
| | |
| Grignard (RMgX) |
37:04 | |
| | |
| Organolithium (Rli) |
40:03 | |
| | |
Organometallic Reagents: Reactions |
41:45 | |
| | |
| Reactions of Organometallic Reagents |
41:46 | |
| | |
Organometallic Reagents: Reactions as Strong Nu: |
46:40 | |
| | |
| Example 1: Reactions as Strong Nu: |
46:41 | |
| | |
| Example 2: Reactions as Strong Nu: |
48:57 | |
| | |
Hydride Nu: |
50:52 | |
| | |
| Hydride Nu: |
50:53 | |
| | |
Examples |
53:34 | |
| | |
| Predict 1 |
53:35 | |
| | |
| Predict 2 |
54:45 | |
| | |
Examples |
56:43 | |
| | |
| Transform |
56:44 | |
| | |
| Provide Starting Material |
58:18 | |
| |
Alcohols, Part II |
45:35 |
| | |
Intro |
0:00 | |
| | |
Oxidation Reactions |
0:08 | |
| | |
| Oxidizing Agents: Jones, PCC, Swern |
0:09 | |
| | |
| 'Jones' Oxidation |
0:43 | |
| | |
| Example 1: Predict Oxidation Reactions |
2:29 | |
| | |
| Example 2: Predict Oxidation Reactions |
3:00 | |
| | |
Oxidation Reactions |
4:11 | |
| | |
| Selective Oxidizing Agents (PCC and Swern) |
4:12 | |
| | |
| PCC (Pyridiniym Chlorochromate) |
5:10 | |
| | |
| Swern Oxidation |
6:05 | |
| | |
General [ox] Mechanism |
8:32 | |
| | |
| General [ox] Mechanism |
8:33 | |
| | |
Oxidation of Alcohols |
10:11 | |
| | |
| Example 1: Oxidation of Alcohols |
10:12 | |
| | |
| Example 2: Oxidation of Alcohols |
11:20 | |
| | |
| Example 3: Oxidation of Alcohols |
11:46 | |
| | |
Example |
13:09 | |
| | |
| Predict: PCC Oxidation Reactions |
13:10 | |
| | |
Tosylation of Alcohols |
15:22 | |
| | |
| Introduction to Tosylation of Alcohols |
15:23 | |
| | |
Example |
21:08 | |
| | |
| Example: Tosylation of Alcohols |
21:09 | |
| | |
Reductions of Alcohols |
23:39 | |
| | |
| Reductions of Alcohols via SN2 with Hydride |
24:22 | |
| | |
| Reductions of Alcohols via Dehydration |
27:12 | |
| | |
Conversion of Alcohols to Alkyl Halides |
30:12 | |
| | |
| Conversion of Alcohols to Alkyl Halides via Tosylate |
30:13 | |
| | |
Conversion of Alcohols to Alkyl Halides |
31:17 | |
| | |
| Using HX |
31:18 | |
| | |
| Mechanism |
32:09 | |
| | |
Conversion of Alcohols to Alkyl Halides |
35:43 | |
| | |
| Reagents that Provide LG and Nu: in One 'Pot' |
35:44 | |
| | |
General Mechanisms |
37:44 | |
| | |
| Example 1: General Mechanisms |
37:45 | |
| | |
| Example 2: General Mechanisms |
39:25 | |
| | |
Example |
41:04 | |
| | |
| Transformation of Alcohols |
41:05 | |
| |
Ethers |
94:45 |
| | |
Intro |
0:00 | |
| | |
Ethers |
0:11 | |
| | |
| Overview of Ethers |
0:12 | |
| | |
| Boiling Points |
1:37 | |
| | |
Ethers |
4:34 | |
| | |
| Water Solubility (Grams per 100mL H2O) |
4:35 | |
| | |
Synthesis of Ethers |
7:53 | |
| | |
| Williamson Ether Synthesis |
7:54 | |
| | |
| Example: Synthesis of Ethers |
9:23 | |
| | |
Synthesis of Ethers |
10:27 | |
| | |
| Example: Synthesis of Ethers |
10:28 | |
| | |
| Intramolecular SN2 |
13:04 | |
| | |
Planning an Ether Synthesis |
14:45 | |
| | |
| Example 1: Planning an Ether Synthesis |
14:46 | |
| | |
Planning an Ether Synthesis |
16:16 | |
| | |
| Example 2: Planning an Ether Synthesis |
16:17 | |
| | |
Planning an Ether Synthesis |
22:04 | |
| | |
| Example 3: Synthesize Dipropyl Ether |
22:05 | |
| | |
Planning an Ether Synthesis |
26:01 | |
| | |
| Example 4: Transform |
26:02 | |
| | |
Synthesis of Epoxides |
30:05 | |
| | |
| Synthesis of Epoxides Via Williamson Ether Synthesis |
30:06 | |
| | |
| Synthesis of Epoxides Via Oxidation |
32:42 | |
| | |
Reaction of Ethers |
33:35 | |
| | |
| Reaction of Ethers |
33:36 | |
| | |
Reactions of Ethers with HBr or HI |
34:44 | |
| | |
| Reactions of Ethers with HBr or HI |
34:45 | |
| | |
| Mechanism |
35:25 | |
| | |
Epoxide Ring-Opening Reaction |
39:25 | |
| | |
| Epoxide Ring-Opening Reaction |
39:26 | |
| | |
| Example: Epoxide Ring-Opening Reaction |
42:42 | |
| | |
Acid-Catalyzed Epoxide Ring Opening |
44:16 | |
| | |
| Acid-Catalyzed Epoxide Ring Opening Mechanism |
44:17 | |
| | |
Acid-Catalyzed Epoxide Ring Opening |
50:13 | |
| | |
| Acid-Catalyzed Epoxide Ring Opening Mechanism |
50:14 | |
| | |
Catalyst Needed for Ring Opening |
53:34 | |
| | |
| Catalyst Needed for Ring Opening |
53:35 | |
| | |
Stereochemistry of Epoxide Ring Opening |
55:56 | |
| | |
| Stereochemistry: SN2 Mechanism |
55:57 | |
| | |
| Acid or Base Mechanism? |
58:30 | |
| | |
Example |
61:03 | |
| | |
| Transformation |
61:04 | |
| | |
Regiochemistry of Epoxide Ring Openings |
65:29 | |
| | |
| Regiochemistry of Epoxide Ring Openings in Base |
65:30 | |
| | |
| Regiochemistry of Epoxide Ring Openings in Acid |
67:34 | |
| | |
Example |
70:26 | |
| | |
| Example 1: Epoxide Ring Openings in Base |
70:27 | |
| | |
| Example 2: Epoxide Ring Openings in Acid |
72:50 | |
| | |
Reactions of Epoxides with Grignard and Hydride |
75:35 | |
| | |
| Reactions of Epoxides with Grignard and Hydride |
75:36 | |
| | |
Example |
81:47 | |
| | |
| Example: Ethers |
81:50 | |
| | |
Example |
87:01 | |
| | |
| Example: Synthesize |
87:02 | |
| |
Thiols and Thioethers |
16:50 |
| | |
Intro |
0:00 | |
| | |
Thiols and Thioethers |
0:10 | |
| | |
| Physical Properties |
0:11 | |
| | |
| Reactions Can Be Oxidized |
2:16 | |
| | |
Acidity of Thiols |
3:11 | |
| | |
| Thiols Are More Acidic Than Alcohols |
3:12 | |
| | |
Synthesis of Thioethers |
6:44 | |
| | |
| Synthesis of Thioethers |
6:45 | |
| | |
Example |
8:43 | |
| | |
| Example: Synthesize the Following Target Molecule |
8:44 | |
| | |
Example |
14:18 | |
| | |
| Example: Predict |
14:19 | |
| |
Transformation Practice Problems |
38:58 |
| | |
Intro |
0:00 | |
| | |
Practice Problems |
0:33 | |
| | |
| Practice Problem 1: Transform |
0:34 | |
| | |
| Practice Problem 2: Transform |
3:57 | |
| | |
Practice Problems |
7:49 | |
| | |
| Practice Problem 3: Transform |
7:50 | |
| | |
Practice Problems |
15:32 | |
| | |
| Practice Problem 4: Transform |
15:34 | |
| | |
| Practice Problem 5: Transform |
20:15 | |
| | |
Practice Problems |
24:08 | |
| | |
| Practice Problem 6: Transform |
24:09 | |
| | |
| Practice Problem 7: Transform |
29:27 | |
| | |
Practice Problems |
33:08 | |
| | |
| Practice Problem 8: Transform |
33:09 | |
| | |
| Practice Problem 9: Transform |
35:23 | |
| |
Ketones |
138:12 |
| | |
Intro |
0:00 | |
| | |
Aldehydes & Ketones |
0:11 | |
| | |
| The Carbonyl: Resonance & Inductive |
0:12 | |
| | |
| Reactivity |
0:50 | |
| | |
The Carbonyl |
2:35 | |
| | |
| The Carbonyl |
2:36 | |
| | |
| Carbonyl FG's |
4:10 | |
| | |
Preparation/Synthesis of Aldehydes & Ketones |
6:18 | |
| | |
| Oxidation of Alcohols |
6:19 | |
| | |
| Ozonolysis of Alkenes |
7:16 | |
| | |
| Hydration of Alkynes |
8:01 | |
| | |
Reaction with Hydride Nu: |
9:00 | |
| | |
| Reaction with Hydride Nu: |
9:01 | |
| | |
Reaction with Carbon Nu: |
11:29 | |
| | |
| Carbanions: Acetylide |
11:30 | |
| | |
| Carbanions: Cyanide |
14:23 | |
| | |
Reaction with Carbon Nu: |
15:32 | |
| | |
| Organometallic Reagents (RMgX, Rli) |
15:33 | |
| | |
Retrosynthesis of Alcohols |
17:04 | |
| | |
| Retrosynthesis of Alcohols |
17:05 | |
| | |
Example |
19:30 | |
| | |
| Example: Transform |
19:31 | |
| | |
Example |
22:57 | |
| | |
| Example: Transform |
22:58 | |
| | |
Example |
28:19 | |
| | |
| Example: Transform |
28:20 | |
| | |
Example |
33:36 | |
| | |
| Example: Transform |
33:37 | |
| | |
Wittig Reaction |
37:39 | |
| | |
| Wittig Reaction: A Resonance-Stabilized Carbanion (Nu:) |
37:40 | |
| | |
| Wittig Reaction: Mechanism |
39:51 | |
| | |
Preparation of Wittig Reagent |
41:58 | |
| | |
| Two Steps From RX |
41:59 | |
| | |
| Example: Predict |
45:02 | |
| | |
Wittig Retrosynthesis |
46:19 | |
| | |
| Wittig Retrosynthesis |
46:20 | |
| | |
| Synthesis |
48:09 | |
| | |
Reaction with Oxygen Nu: |
51:21 | |
| | |
| Addition of H2O |
51:22 | |
| | |
| Exception: Formaldehyde is 99% Hydrate in H2O Solution |
54:10 | |
| | |
| Exception: Hydrate is Favored if Partial Positive Near Carbonyl |
55:26 | |
| | |
Reaction with Oxygen Nu: |
57:45 | |
| | |
| Addition of ROH |
57:46 | |
| | |
| TsOH: Tosic Acid |
58:28 | |
| | |
| Addition of ROH Cont. |
59:09 | |
| | |
Example |
61:43 | |
| | |
| Predict |
61:44 | |
| | |
| Mechanism |
63:08 | |
| | |
Mechanism for Acetal Formation |
64:10 | |
| | |
| Mechanism for Acetal Formation |
64:11 | |
| | |
What is a CTI? |
75:04 | |
| | |
| Tetrahedral Intermediate |
75:05 | |
| | |
| Charged Tetrahedral Intermediate |
75:45 | |
| | |
| CTI: Acid-cat |
76:10 | |
| | |
| CTI: Base-cat |
77:01 | |
| | |
Acetals & Cyclic Acetals |
77:49 | |
| | |
| Overall |
77:50 | |
| | |
| Cyclic Acetals |
78:46 | |
| | |
Hydrolysis of Acetals: Regenerates Carbonyl |
80:01 | |
| | |
| Hydrolysis of Acetals: Regenerates Carbonyl |
80:02 | |
| | |
| Mechanism |
82:08 | |
| | |
Reaction with Nitrogen Nu: |
90:11 | |
| | |
| Reaction with Nitrogen Nu: |
90:12 | |
| | |
| Example |
92:18 | |
| | |
Mechanism of Imine Formation |
93:24 | |
| | |
| Mechanism of Imine Formation |
93:25 | |
| | |
Oxidation of Aldehydes |
98:12 | |
| | |
| Oxidation of Aldehydes 1 |
98:13 | |
| | |
| Oxidation of Aldehydes 2 |
99:52 | |
| | |
| Oxidation of Aldehydes 3 |
100:10 | |
| | |
Reductions of Ketones and Aldehydes |
100:54 | |
| | |
| Reductions of Ketones and Aldehydes |
100:55 | |
| | |
| Hydride/ Workup |
101:22 | |
| | |
| Raney Nickel |
102:07 | |
| | |
Reductions of Ketones and Aldehydes |
103:24 | |
| | |
| Clemmensen Reduction & Wolff-Kishner Reduction |
103:40 | |
| | |
Acetals as Protective Groups |
106:50 | |
| | |
| Acetals as Protective Groups |
106:51 | |
| | |
Example |
110:39 | |
| | |
| Example: Consider the Following Synthesis |
110:40 | |
| | |
Protective Groups |
114:47 | |
| | |
| Protective Groups |
114:48 | |
| | |
Example |
119:02 | |
| | |
| Example: Transform |
119:03 | |
| | |
Example: Another Route |
124:54 | |
| | |
| Example: Transform |
128:49 | |
| | |
Example |
128:50 | |
| | |
| Transform |
128:51 | |
| | |
Example |
131:05 | |
| | |
| Transform |
131:06 | |
| | |
Example |
133:45 | |
| | |
| Transform |
133:46 | |
| | |
Example |
135:43 | |
| | |
| Provide the Missing Starting Material |
135:44 | |
| Part III |
| |
Carboxylic Acids |
77:51 |
| | |
Intro |
0:00 | |
| | |
Review Reactions of Ketone/Aldehyde |
0:06 | |
| | |
| Carbonyl Reactivity |
0:07 | |
| | |
| Nu: = Hydride (Reduction) |
1:37 | |
| | |
| Nu: = Grignard |
2:08 | |
| | |
Review Reactions of Ketone/Aldehyde |
2:53 | |
| | |
| Nu: = Alcohol |
2:54 | |
| | |
| Nu: = Amine |
3:46 | |
| | |
Carboxylic Acids and Their Derivatives |
4:37 | |
| | |
| Carboxylic Acids and Their Derivatives |
4:38 | |
| | |
Ketone vs. Ester Reactivity |
6:33 | |
| | |
| Ketone Reactivity |
6:34 | |
| | |
| Ester Reactivity |
6:55 | |
| | |
Carboxylic Acids and Their Derivatives |
7:30 | |
| | |
| Acid Halide, Anhydride, Ester, Amide, and Nitrile |
7:43 | |
| | |
General Reactions of Acarboxylic Acid Derivatives |
9:22 | |
| | |
| General Reactions of Acarboxylic Acid Derivatives |
9:23 | |
| | |
Physical Properties of Carboxylic Acids |
12:16 | |
| | |
| Acetic Acid |
12:17 | |
| | |
| Carboxylic Acids |
15:46 | |
| | |
Aciditiy of Carboxylic Acids, RCO2H |
17:45 | |
| | |
| Alcohol |
17:46 | |
| | |
| Carboxylic Acid |
19:21 | |
| | |
Aciditiy of Carboxylic Acids, RCO2H |
21:31 | |
| | |
| Aciditiy of Carboxylic Acids, RCO2H |
21:32 | |
| | |
Aciditiy of Carboxylic Acids, RCO2H |
24:48 | |
| | |
| Example: Which is the Stronger Acid? |
24:49 | |
| | |
Aciditiy of Carboxylic Acids, RCO2H |
30:06 | |
| | |
| Inductive Effects Decrease with Distance |
30:07 | |
| | |
Preparation of Carboxylic Acids, RCO2H |
31:55 | |
| | |
| A) By Oxidation |
31:56 | |
| | |
Preparation of Carboxylic Acids, RCO2H |
34:37 | |
| | |
| Oxidation of Alkenes/Alkynes - Ozonolysis |
34:38 | |
| | |
Preparation of Carboxylic Acids, RCO2H |
36:17 | |
| | |
| B) Preparation of RCO2H from Organometallic Reagents |
36:18 | |
| | |
Preparation of Carboxylic Acids, RCO2H |
38:02 | |
| | |
| Example: Preparation of Carboxylic Acids |
38:03 | |
| | |
Preparation of Carboxylic Acids, RCO2H |
40:38 | |
| | |
| C) Preparation of RCO2H by Hydrolysis of Carboxylic Acid Derivatives |
40:39 | |
| | |
Hydrolysis Mechanism |
42:19 | |
| | |
| Hydrolysis Mechanism |
42:20 | |
| | |
| Mechanism: Acyl Substitution (Addition/Elimination) |
43:05 | |
| | |
Hydrolysis Mechanism |
47:27 | |
| | |
| Substitution Reaction |
47:28 | |
| | |
| RO is Bad LG for SN1/SN2 |
47:39 | |
| | |
| RO is okay LG for Collapse of CTI |
48:31 | |
| | |
Hydrolysis Mechanism |
50:07 | |
| | |
| Base-promoted Ester Hydrolysis (Saponification) |
50:08 | |
| | |
Applications of Carboxylic Acid Derivatives: |
53:10 | |
| | |
| Saponification Reaction |
53:11 | |
| | |
Ester Hydrolysis |
57:15 | |
| | |
| Acid-Catalyzed Mechanism |
57:16 | |
| | |
Ester Hydrolysis Requires Acide or Base |
63:06 | |
| | |
| Ester Hydrolysis Requires Acide or Base |
63:07 | |
| | |
Nitrile Hydrolysis |
65:22 | |
| | |
| Nitrile Hydrolysis |
65:23 | |
| | |
Nitrile Hydrolysis Mechanism |
66:53 | |
| | |
| Nitrile Hydrolysis Mechanism |
66:54 | |
| | |
Use of Nitriles in Synthesis |
72:39 | |
| | |
| Example: Nitirles in Synthesis |
72:40 | |
| |
Carboxylic Acid Derivatives |
81:04 |
| | |
Intro |
0:00 | |
| | |
Carboxylic Acid Derivatives |
0:05 | |
| | |
| Carboxylic Acid Derivatives |
0:06 | |
| | |
| General Structure |
1:00 | |
| | |
Preparation of Carboxylic Acid Derivatives |
1:19 | |
| | |
| Which Carbonyl is the Better E+? |
1:20 | |
| | |
| Inductive Effects |
1:54 | |
| | |
| Resonance |
3:23 | |
| | |
Preparation of Carboxylic Acid Derivatives |
6:52 | |
| | |
| Which is Better E+, Ester or Acid Chloride? |
6:53 | |
| | |
| Inductive Effects |
7:02 | |
| | |
| Resonance |
7:20 | |
| | |
Preparation of Carboxylic Acid Derivatives |
10:45 | |
| | |
| Which is Better E+, Carboxylic Acid or Anhydride? |
10:46 | |
| | |
| Inductive Effects & Resonance |
11:00 | |
| | |
Overall: Order of Electrophilicity and Leaving Group |
14:49 | |
| | |
| Order of Electrophilicity and Leaving Group |
14:50 | |
| | |
| Example: Acid Chloride |
16:26 | |
| | |
| Example: Carboxylate |
19:17 | |
| | |
Carboxylic Acid Derivative Interconversion |
20:53 | |
| | |
| Carboxylic Acid Derivative Interconversion |
20:54 | |
| | |
Preparation of Acid Halides |
24:31 | |
| | |
| Preparation of Acid Halides |
24:32 | |
| | |
Preparation of Anhydrides |
25:45 | |
| | |
| A) Dehydration of Acids (For Symmetrical Anhydride) |
25:46 | |
| | |
Preparation of Anhydrides |
27:29 | |
| | |
| Example: Dehydration of Acids |
27:30 | |
| | |
Preparation of Anhydrides |
29:16 | |
| | |
| B) From an Acid Chloride (To Make Mixed Anhydride) |
29:17 | |
| | |
| Mechanism |
30:03 | |
| | |
Preparation of Esters |
31:53 | |
| | |
| A) From Acid Chloride or Anhydride |
31:54 | |
| | |
Preparation of Esters |
33:48 | |
| | |
| B) From Carboxylic Acids (Fischer Esterification) |
33:49 | |
| | |
| Mechanism |
36:55 | |
| | |
Preparations of Esters |
41:38 | |
| | |
| Example: Predict the Product |
41:39 | |
| | |
Preparation of Esters |
43:17 | |
| | |
| C) Transesterification |
43:18 | |
| | |
| Mechanism |
45:17 | |
| | |
Preparation of Esters |
47:58 | |
| | |
| D) SN2 with Carboxylate |
47:59 | |
| | |
| Mechanism: Diazomethane |
49:28 | |
| | |
Preparation of Esters |
51:01 | |
| | |
| Example: Transform |
51:02 | |
| | |
Preparation of Amides |
52:27 | |
| | |
| A) From an Acid Cl or Anhydride |
52:28 | |
| | |
Preparations of Amides |
54:47 | |
| | |
| B) Partial Hydrolysis of Nitriles |
54:48 | |
| | |
Preparation of Amides |
56:11 | |
| | |
| Preparation of Amides: Find Alternate Path |
56:12 | |
| | |
Preparation of Amides |
59:04 | |
| | |
| C) Can't be Easily Prepared from RCO2H Directly |
59:05 | |
| | |
Reactions of Carboxylic Acid Derivatives with Nucleophiles |
61:41 | |
| | |
| A) Hydride Nu: Review |
61:42 | |
| | |
| A) Hydride Nu: Sodium Borohydride + Ester |
62:43 | |
| | |
Reactions of Carboxylic Acid Derivatives with Nucleophiles |
63:57 | |
| | |
| Lithium Aluminum Hydride (LAH) |
63:58 | |
| | |
| Mechanism |
64:29 | |
| | |
Summary of Hydride Reductions |
67:09 | |
| | |
| Summary of Hydride Reductions 1 |
67:10 | |
| | |
| Summary of Hydride Reductions 2 |
67:36 | |
| | |
Hydride Reduction of Amides |
68:12 | |
| | |
| Hydride Reduction of Amides Mechanism |
68:13 | |
| | |
Reaction of Carboxylic Acid Derivatives with Organometallics |
72:04 | |
| | |
| Review 1 |
72:05 | |
| | |
| Review 2 |
72:50 | |
| | |
Reaction of Carboxylic Acid Derivatives with Organometallics |
74:22 | |
| | |
| Example: Lactone |
74:23 | |
| | |
Special Hydride Nu: Reagents |
76:34 | |
| | |
| Diisobutylaluminum Hydride |
76:35 | |
| | |
| Example |
77:25 | |
| | |
| Other Special Hydride |
78:41 | |
| | |
Addition of Organocuprates to Acid Chlorides |
79:07 | |
| | |
| Addition of Organocuprates to Acid Chlorides |
79:08 | |
| |
Enols and Enolates, Part 1 |
86:22 |
| | |
Intro |
0:00 | |
| | |
Enols and Enolates |
0:09 | |
| | |
| The Carbonyl |
0:10 | |
| | |
| Keto-Enol Tautomerization |
1:17 | |
| | |
Keto-Enol Tautomerization Mechanism |
2:28 | |
| | |
| Tautomerization Mechanism (2 Steps) |
2:29 | |
| | |
Keto-Enol Tautomerization Mechanism |
5:15 | |
| | |
| Reverse Reaction |
5:16 | |
| | |
| Mechanism |
6:07 | |
| | |
Formation of Enolates |
7:27 | |
| | |
| Why is a Ketone's α H's Acidic? |
7:28 | |
| | |
Formation of Other Carbanions |
10:05 | |
| | |
| Alkyne |
10:06 | |
| | |
| Alkane and Alkene |
10:53 | |
| | |
Formation of an Enolate: Choice of Base |
11:27 | |
| | |
| Example: Choice of Base |
11:28 | |
| | |
Formation of an Enolate: Choice of Base |
13:56 | |
| | |
| Deprotonate, Stronger Base, and Lithium Diisopropyl Amide (LDA) |
13:57 | |
| | |
Formation of an Enolate: Choice of Base |
15:48 | |
| | |
| Weaker Base & 'Active' Methylenes |
15:49 | |
| | |
| Why Use NaOEt instead of NaOH? |
19:01 | |
| | |
Other Acidic 'α' Protons |
20:30 | |
| | |
| Other Acidic 'α' Protons |
20:31 | |
| | |
| Why is an Ester Less Acidic than a Ketone? |
24:10 | |
| | |
Other Acidic 'α' Protons |
25:19 | |
| | |
| Other Acidic 'α' Protons Continue |
25:20 | |
| | |
How are Enolates Used |
25:54 | |
| | |
| Enolates |
25:55 | |
| | |
| Possible Electrophiles |
26:21 | |
| | |
Alkylation of Enolates |
27:56 | |
| | |
| Alkylation of Enolates |
27:57 | |
| | |
| Resonance Form |
30:03 | |
| | |
α-Halogenation |
32:17 | |
| | |
| α-Halogenation |
32:18 | |
| | |
| Iodoform Test for Methyl Ketones |
33:47 | |
| | |
α-Halogenation |
35:55 | |
| | |
| Acid-Catalyzed |
35:57 | |
| | |
| Mechanism: 1st Make Enol (2 Steps) |
36:14 | |
| | |
| Whate Other Eloctrophiles ? |
39:17 | |
| | |
Aldol Condensation |
39:38 | |
| | |
| Aldol Condensation |
39:39 | |
| | |
Aldol Mechanism |
41:26 | |
| | |
| Aldol Mechanism: In Base, Deprotonate First |
41:27 | |
| | |
Aldol Mechanism |
45:28 | |
| | |
| Mechanism for Loss of H2O |
45:29 | |
| | |
| Collapse of CTI and β-elimination Mechanism |
47:51 | |
| | |
| Loss of H20 is not E2! |
48:39 | |
| | |
Aldol Summary |
49:53 | |
| | |
| Aldol Summary |
49:54 | |
| | |
| Base-Catalyzed Mechanism |
52:34 | |
| | |
| Acid-Catalyzed Mechansim |
53:01 | |
| | |
Acid-Catalyzed Aldol Mechanism |
54:01 | |
| | |
| First Step: Make Enol |
54:02 | |
| | |
Acid-Catalyzed Aldol Mechanism |
56:54 | |
| | |
| Loss of H20 (β elimination) |
56:55 | |
| | |
Crossed/Mixed Aldol |
60:55 | |
| | |
| Crossed/Mixed Aldol & Compound with α H's |
60:56 | |
| | |
| Ketone vs. Aldehyde |
62:30 | |
| | |
| Crossed/Mixed Aldol & Compound with α H's Continue |
63:10 | |
| | |
Crossed/Mixed Aldol |
65:21 | |
| | |
| Mixed Aldol: control Using LDA |
65:22 | |
| | |
Crossed/Mixed Aldol Retrosynthesis |
68:53 | |
| | |
| Example: Predic Aldol Starting Material (Aldol Retrosyntheiss) |
68:54 | |
| | |
Claisen Condensation |
72:54 | |
| | |
| Claisen Condensation (Aldol on Esters) |
72:55 | |
| | |
Claisen Condensation |
79:52 | |
| | |
| Example 1: Claisen Condensation |
79:53 | |
| | |
Claisen Condensation |
82:48 | |
| | |
| Example 2: Claisen Condensation |
82:49 | |
| |
Enols and Enolates, Part 2 |
50:57 |
| | |
Intro |
0:00 | |
| | |
Conjugate Additions |
0:06 | |
| | |
| α, β-unsaturated Carbonyls |
0:07 | |
| | |
Conjugate Additions |
1:50 | |
| | |
| '1,2-addition' |
1:51 | |
| | |
| '1,-4-addition' or 'Conjugate Addition' |
2:24 | |
| | |
Conjugate Additions |
4:53 | |
| | |
| Why can a Nu: Add to this Alkene? |
4:54 | |
| | |
| Typical Alkene |
5:09 | |
| | |
| α, β-unsaturated Alkene |
5:39 | |
| | |
Electrophilic Alkenes: Michael Acceptors |
6:35 | |
| | |
| Other 'Electrophilic' Alkenes (Called 'Michael Acceptors) |
6:36 | |
| | |
1,4-Addition of Cuprates (R2CuLi) |
8:29 | |
| | |
| 1,4-Addition of Cuprates (R2CuLi) |
8:30 | |
| | |
1,4-Addition of Cuprates (R2CuLi) |
11:23 | |
| | |
| Use Cuprates in Synthesis |
11:24 | |
| | |
Preparation of Cuprates |
12:25 | |
| | |
| Prepare Organocuprate From Organolithium |
12:26 | |
| | |
| Cuprates Also Do SN2 with RX E+ (Not True for RMgX, RLi) |
13:06 | |
| | |
1,4-Addition of Enolates: Michael Reaction |
13:50 | |
| | |
| 1,4-Addition of Enolates: Michael Reaction |
13:51 | |
| | |
| Mechanism |
15:57 | |
| | |
1,4-Addition of Enolates: Michael Reaction |
18:47 | |
| | |
| Example: 1,4-Addition of Enolates |
18:48 | |
| | |
1,4-Addition of Enolates: Michael Reaction |
21:02 | |
| | |
| Michael Reaction, Followed by Intramolecular Aldol |
21:03 | |
| | |
Mechanism of the Robinson Annulation |
24:26 | |
| | |
| Mechanism of the Robinson Annulation |
24:27 | |
| | |
Enols and Enolates: Advanced Synthesis Topics |
31:10 | |
| | |
| Stablized Enolates and the Decarboxylation Reaction |
31:11 | |
| | |
| Mechanism: A Pericyclic Reaction |
32:08 | |
| | |
Enols and Enolates: Advanced Synthesis Topics |
33:32 | |
| | |
| Example: Advance Synthesis |
33:33 | |
| | |
Enols and Enolates: Advanced Synthesis Topics |
36:10 | |
| | |
| Common Reagents: Diethyl Malonate |
36:11 | |
| | |
| Common Reagents: Ethyl Acetoacetate |
37:27 | |
| | |
Enols and Enolates: Advanced Synthesis Topics |
38:06 | |
| | |
| Example: Transform |
38:07 | |
| | |
Advanced Synthesis Topics: Enamines |
41:52 | |
| | |
| Enamines |
41:53 | |
| | |
Advanced Synthesis Topics: Enamines |
43:06 | |
| | |
| Reaction with Ketone/Aldehyde |
43:07 | |
| | |
| Example |
44:08 | |
| | |
Advanced Synthesis Topics: Enamines |
45:31 | |
| | |
| Example: Use Enamines as Nu: (Like Enolate) |
45:32 | |
| | |
Advanced Synthesis Topics: Enamines |
47:56 | |
| | |
| Example |
47:58 | |
| |
Aromatic Compounds: Structure |
60:59 |
| | |
Intro |
0:00 | |
| | |
Aromatic Compounds |
0:05 | |
| | |
| Benzene |
0:06 | |
| | |
| 3D Sketch |
1:33 | |
| | |
Features of Benzene |
4:41 | |
| | |
| Features of Benzene |
4:42 | |
| | |
Aromatic Stability |
6:41 | |
| | |
| Resonance Stabilization of Benzene |
6:42 | |
| | |
| Cyclohexatriene |
7:24 | |
| | |
| Benzene (Actual, Experimental) |
8:11 | |
| | |
Aromatic Stability |
9:03 | |
| | |
| Energy Graph |
9:04 | |
| | |
Aromaticity Requirements |
9:55 | |
| | |
| 1) Cyclic and Planar |
9:56 | |
| | |
| 2) Contiguous p Orbitals |
10:49 | |
| | |
| 3) Satisfy Huckel's Rule |
11:20 | |
| | |
| Example: Benzene |
12:32 | |
| | |
Common Aromatic Compounds |
13:28 | |
| | |
| Example: Pyridine |
13:29 | |
| | |
Common Aromatic Compounds |
16:25 | |
| | |
| Example: Furan |
16:26 | |
| | |
Common Aromatic Compounds |
19:42 | |
| | |
| Example: Thiophene |
19:43 | |
| | |
| Example: Pyrrole |
20:18 | |
| | |
Common Aromatic Compounds |
21:09 | |
| | |
| Cyclopentadienyl Anion |
21:10 | |
| | |
| Cycloheptatrienyl Cation |
23:48 | |
| | |
| Naphthalene |
26:04 | |
| | |
Determining Aromaticity |
27:28 | |
| | |
| Example: Which of the Following are Aromatic? |
27:29 | |
| | |
Molecular Orbital (MO) Theory |
32:26 | |
| | |
| What's So Special About '4n + 2' Electrons? |
32:27 | |
| | |
| π bond & Overlapping p Orbitals |
32:53 | |
| | |
Molecular Orbital (MO) Diagrams |
36:56 | |
| | |
| MO Diagram: Benzene |
36:58 | |
| | |
Drawing MO Diagrams |
44:26 | |
| | |
| Example: 3-Membered Ring |
44:27 | |
| | |
| Example: 4-Membered Ring |
46:04 | |
| | |
Drawing MO Diagrams |
47:51 | |
| | |
| Example: 5-Membered Ring |
47:52 | |
| | |
| Example: 8-Membered Ring |
49:32 | |
| | |
Aromaticity and Reactivity |
51:03 | |
| | |
| Example: Which is More Acidic? |
51:04 | |
| | |
Aromaticity and Reactivity |
56:03 | |
| | |
| Example: Which has More Basic Nitrogen, Pyrrole or Pyridine? |
56:04 | |
| |
Aromatic Compounds: Reactions, Part 1 |
84:04 |
| | |
Intro |
0:00 | |
| | |
Reactions of Benzene |
0:07 | |
| | |
| N/R as Alkenes |
0:08 | |
| | |
| Substitution Reactions |
0:50 | |
| | |
Electrophilic Aromatic Substitution |
1:24 | |
| | |
| Electrophilic Aromatic Substitution |
1:25 | |
| | |
| Mechanism Step 1: Addition of Electrophile |
2:08 | |
| | |
| Mechanism Step 2: Loss of H+ |
4:14 | |
| | |
Electrophilic Aromatic Substitution on Substituted Benzenes |
5:21 | |
| | |
| Electron Donating Group |
5:22 | |
| | |
| Electron Withdrawing Group |
8:02 | |
| | |
| Halogen |
9:23 | |
| | |
Effects of Electron-Donating Groups (EDG) |
10:23 | |
| | |
| Effects of Electron-Donating Groups (EDG) |
10:24 | |
| | |
| What Effect Does EDG (OH) Have? |
11:40 | |
| | |
| Reactivity |
13:03 | |
| | |
| Regioselectivity |
14:07 | |
| | |
Regioselectivity: EDG is o/p Director |
14:57 | |
| | |
| Prove It! Add E+ and Look at Possible Intermediates |
14:58 | |
| | |
| Is OH Good or Bad? |
17:38 | |
| | |
Effects of Electron-Withdrawing Groups (EWG) |
20:20 | |
| | |
| What Effect Does EWG Have? |
20:21 | |
| | |
| Reactivity |
21:28 | |
| | |
| Regioselectivity |
22:24 | |
| | |
Regioselectivity: EWG is a Meta Director |
23:23 | |
| | |
| Prove It! Add E+ and Look at Competing Intermediates |
23:24 | |
| | |
| Carbocation: Good or Bad? |
26:01 | |
| | |
Effects of Halogens on EAS |
28:33 | |
| | |
| Inductive Withdrawal of e- Density vs. Resonance Donation |
28:34 | |
| | |
Summary of Substituent Effects on EAS |
32:33 | |
| | |
| Electron Donating Group |
32:34 | |
| | |
| Electron Withdrawing Group |
33:37 | |
| | |
Directing Power of Substituents |
34:35 | |
| | |
| Directing Power of Substituents |
34:36 | |
| | |
| Example |
36:41 | |
| | |
Electrophiles for Electrophilic Aromatic Substitution |
38:43 | |
| | |
| Reaction: Halogenation |
38:44 | |
| | |
Electrophiles for Electrophilic Aromatic Substitution |
40:27 | |
| | |
| Reaction: Nitration |
40:28 | |
| | |
Electrophiles for Electrophilic Aromatic Substitution |
41:45 | |
| | |
| Reaction: Sulfonation |
41:46 | |
| | |
Electrophiles for Electrophilic Aromatic Substitution |
43:19 | |
| | |
| Reaction: Friedel-Crafts Alkylation |
43:20 | |
| | |
Electrophiles for Electrophilic Aromatic Substitution |
45:43 | |
| | |
| Reaction: Friedel-Crafts Acylation |
45:44 | |
| | |
Electrophilic Aromatic Substitution: Nitration |
46:52 | |
| | |
| Electrophilic Aromatic Substitution: Nitration |
46:53 | |
| | |
| Mechanism |
48:56 | |
| | |
Nitration of Aniline |
52:40 | |
| | |
| Nitration of Aniline Part 1 |
52:41 | |
| | |
| Nitration of Aniline Part 2: Why? |
54:12 | |
| | |
Nitration of Aniline |
56:10 | |
| | |
| Workaround: Protect Amino Group as an Amide |
56:11 | |
| | |
Electrophilic Aromatic Substitution: Sulfonation |
58:16 | |
| | |
| Electrophilic Aromatic Substitution: Sulfonation |
58:17 | |
| | |
| Example: Transform |
59:25 | |
| | |
Electrophilic Aromatic Substitution: Friedel-Crafts Alkylation |
62:24 | |
| | |
| Electrophilic Aromatic Substitution: Friedel-Crafts Alkylation |
62:25 | |
| | |
| Example & Mechanism |
63:37 | |
| | |
Friedel-Crafts Alkylation Drawbacks |
65:48 | |
| | |
| A) Can Over-React (Dialkylation) |
65:49 | |
| | |
Friedel-Crafts Alkylation Drawbacks |
68:21 | |
| | |
| B) Carbocation Can Rearrange |
68:22 | |
| | |
| Mechanism |
69:33 | |
| | |
Friedel-Crafts Alkylation Drawbacks |
73:35 | |
| | |
| Want n-Propyl? Use Friedel-Crafts Acylation |
73:36 | |
| | |
| Reducing Agents |
76:45 | |
| | |
Synthesis with Electrophilic Aromatic Substitution |
78:45 | |
| | |
| Example: Transform |
78:46 | |
| | |
Synthesis with Electrophilic Aromatic Substitution |
80:59 | |
| | |
| Example: Transform |
81:00 | |
| |
Aromatic Compounds: Reactions, Part 2 |
59:10 |
| | |
Intro |
0:00 | |
| | |
Reagents for Electrophilic Aromatic Substitution |
0:07 | |
| | |
| Reagents for Electrophilic Aromatic Substitution |
0:08 | |
| | |
Preparation of Diazonium Salt |
2:12 | |
| | |
| Preparation of Diazonium Salt |
2:13 | |
| | |
Reagents for Sandmeyer Reactions |
4:14 | |
| | |
| Reagents for Sandmeyer Reactions |
4:15 | |
| | |
Apply Diazonium Salt in Synthesis |
6:20 | |
| | |
| Example: Transform |
6:21 | |
| | |
Apply Diazonium Salt in Synthesis |
9:14 | |
| | |
| Example: Synthesize Following Target Molecule from Benzene or Toluene |
9:15 | |
| | |
Apply Diazonium Salt in Synthesis |
14:56 | |
| | |
| Example: Transform |
14:57 | |
| | |
Reactions of Aromatic Substituents |
21:56 | |
| | |
| A) Reduction Reactions |
21:57 | |
| | |
Reactions of Aromatic Substituents |
23:24 | |
| | |
| B) Oxidations of Arenes |
23:25 | |
| | |
| Benzylic [ox] Even Breaks C-C Bonds! |
25:05 | |
| | |
| Benzylic Carbon Can't Be Quaternary |
25:55 | |
| | |
Reactions of Aromatic Substituents |
26:21 | |
| | |
| Example |
26:22 | |
| | |
Review of Benzoic Acid Synthesis |
27:34 | |
| | |
| Via Hydrolysis |
27:35 | |
| | |
| Via Grignard |
28:20 | |
| | |
Reactions of Aromatic Substituents |
29:15 | |
| | |
| C) Benzylic Halogenation |
29:16 | |
| | |
| Radical Stabilities |
31:55 | |
| | |
| N-bromosuccinimide (NBS) |
32:23 | |
| | |
Reactions of Aromatic Substituents |
33:08 | |
| | |
| D) Benzylic Substitutions |
33:09 | |
| | |
Reactions of Aromatic Side Chains |
37:08 | |
| | |
| Example: Transform |
37:09 | |
| | |
Nucleophilic Aromatic Substitution |
43:13 | |
| | |
| Nucleophilic Aromatic Substitution |
43:14 | |
| | |
Nucleophilic Aromatic Substitution |
47:08 | |
| | |
| Example |
47:09 | |
| | |
| Mechanism |
48:00 | |
| | |
Nucleophilic Aromatic Substitution |
50:43 | |
| | |
| Example |
50:44 | |
| | |
Nucleophilic Substitution: Benzyne Mechanism |
52:46 | |
| | |
| Nucleophilic Substitution: Benzyne Mechanism |
52:47 | |
| | |
Nucleophilic Substitution: Benzyne Mechanism |
57:31 | |
| | |
| Example: Predict Product |
57:32 | |
| |
Conjugated Dienes |
69:12 |
| | |
Intro |
0:00 | |
| | |
Conjugated Dienes |
0:08 | |
| | |
| Conjugated π Bonds |
0:09 | |
| | |
Diene Stability |
2:00 | |
| | |
| Diene Stability: Cumulated |
2:01 | |
| | |
| Diene Stability: Isolated |
2:37 | |
| | |
| Diene Stability: Conjugated |
2:51 | |
| | |
| Heat of Hydrogenation |
3:00 | |
| | |
Allylic Carbocations and Radicals |
5:15 | |
| | |
| Allylic Carbocations and Radicals |
5:16 | |
| | |
Electrophilic Additions to Dienes |
7:00 | |
| | |
| Alkenes |
7:01 | |
| | |
| Unsaturated Ketone |
7:47 | |
| | |
Electrophilic Additions to Dienes |
8:28 | |
| | |
| Conjugated Dienes |
8:29 | |
| | |
Electrophilic Additions to Dienes |
9:46 | |
| | |
| Mechanism (2-Steps): Alkene |
9:47 | |
| | |
Electrophilic Additions to Dienes |
11:40 | |
| | |
| Mechanism (2-Steps): Diene |
11:41 | |
| | |
| 1,2 'Kinetic' Product |
13:08 | |
| | |
| 1,4 'Thermodynamic' Product |
14:47 | |
| | |
E vs. POR Diagram |
15:50 | |
| | |
| E vs. POR Diagram |
15:51 | |
| | |
Kinetic vs. Thermodynamic Control |
21:56 | |
| | |
| Kinetic vs. Thermodynamic Control |
21:57 | |
| | |
How? Reaction is Reversible! |
23:51 | |
| | |
| 1,2 (Less Stable product) |
23:52 | |
| | |
| 1,4 (More Stable Product) |
25:16 | |
| | |
Diels Alder Reaction |
26:34 | |
| | |
| Diels Alder Reaction |
26:35 | |
| | |
Dienophiles (E+) |
29:23 | |
| | |
| Dienophiles (E+) |
29:24 | |
| | |
Alkyne Diels-Alder Example |
30:48 | |
| | |
| Example: Alkyne Diels-Alder |
30:49 | |
| | |
Diels-Alder Reaction: Dienes (Nu:) |
32:22 | |
| | |
| Diels-Alder ReactionL Dienes (Nu:) |
32:23 | |
| | |
Diels-Alder Reaction: Dienes |
33:51 | |
| | |
| Dienes Must Have 's-cis' Conformation |
33:52 | |
| | |
| Example |
35:25 | |
| | |
Diels-Alder Reaction with Cyclic Dienes |
36:08 | |
| | |
| Cyclic Dienes are Great for Diels-Alder Reaction |
36:09 | |
| | |
| Cyclopentadiene |
37:10 | |
| | |
Diels-Alder Reaction: Bicyclic Products |
40:50 | |
| | |
| Endo vs. Exo Terminology: Norbornane & Bicyclo Heptane |
40:51 | |
| | |
| Example: Bicyclo Heptane |
42:29 | |
| | |
Diels-Alder Reaction with Cyclic Dienes |
44:15 | |
| | |
| Example |
44:16 | |
| | |
Stereochemistry of the Diels-Alder Reaction |
47:39 | |
| | |
| Stereochemistry of the Diels-Alder Reaction |
47:40 | |
| | |
| Example |
48:08 | |
| | |
Stereochemistry of the Diels-Alder Reaction |
50:21 | |
| | |
| Example |
50:22 | |
| | |
Regiochemistry of the Diels-Alder Reaction |
52:42 | |
| | |
| Rule: 1,2-Product Preferred Over 1,3-Product |
52:43 | |
| | |
Regiochemistry of the Diels-Alder Reaction |
54:18 | |
| | |
| Rule: 1,4-Product Preferred Over 1,3-Product |
54:19 | |
| | |
Regiochemistry of the Diels-Alder Reaction |
55:02 | |
| | |
| Why 1,2-Product or 1,4-Product Favored? |
55:03 | |
| | |
| Example |
56:11 | |
| | |
Diels-Alder Reaction |
58:06 | |
| | |
| Example: Predict |
58:07 | |
| | |
Diels-Alder Reaction |
61:27 | |
| | |
| Explain Why No Diels-Alder Reaction Takes Place in This Case |
61:28 | |
| | |
Diels-Alder Reaction |
63:09 | |
| | |
| Example: Predict |
63:10 | |
| | |
Diels-Alder Reaction: Synthesis Problem |
65:39 | |
| | |
| Diels-Alder Reaction: Synthesis Problem |
65:40 | |
| |
Amines |
34:58 |
| | |
Intro |
0:00 | |
| | |
Amines: Properties and Reactivity |
0:04 | |
| | |
| Compare Amines to Alcohols |
0:05 | |
| | |
Amines: Lower Boiling Point than ROH |
0:55 | |
| | |
| 1) RNH2 Has Lower Boiling Point than ROH |
0:56 | |
| | |
Amines: Better Nu: Than ROH |
2:22 | |
| | |
| 2) RNH2 is a Better Nucleophile than ROH Example 1 |
2:23 | |
| | |
| RNH2 is a Better Nucleophile than ROH Example 2 |
3:08 | |
| | |
Amines: Better Nu: than ROH |
3:47 | |
| | |
| Example |
3:48 | |
| | |
Amines are Good Bases |
5:41 | |
| | |
| 3) RNH2 is a Good Base |
5:42 | |
| | |
Amines are Good Bases |
7:06 | |
| | |
| Example 1 |
7:07 | |
| | |
| Example 2: Amino Acid |
8:27 | |
| | |
Alkyl vs. Aryl Amines |
9:56 | |
| | |
| Example: Which is Strongest Base? |
9:57 | |
| | |
Alkyl vs. Aryl Amines |
14:55 | |
| | |
| Verify by Comparing Conjugate Acids |
14:56 | |
| | |
Reaction of Amines |
17:42 | |
| | |
| 1) Reaction with Ketone/Aldehyde: 1° Amine (RNH2) |
17:43 | |
| | |
Reaction of Amines |
18:48 | |
| | |
| 1) Reaction with Ketone/Aldehyde: 2° Amine (R2NH) |
18:49 | |
| | |
Use of Enamine: Synthetic Equivalent of Enolate |
20:08 | |
| | |
| Use of Enamine: Synthetic Equivalent of Enolate |
20:09 | |
| | |
Reaction of Amines |
24:10 | |
| | |
| 2) Hofmann Elimination |
24:11 | |
| | |
Hofmann Elimination |
26:16 | |
| | |
| Kinetic Product |
26:17 | |
| | |
Structure Analysis Using Hofmann Elimination |
28:22 | |
| | |
| Structure Analysis Using Hofmann Elimination |
28:23 | |
| | |
Biological Activity of Amines |
30:30 | |
| | |
| Adrenaline |
31:07 | |
| | |
| Mescaline (Peyote Alkaloid) |
31:22 | |
| | |
| Amino Acids, Amide, and Protein |
32:14 | |
| | |
Biological Activity of Amines |
32:50 | |
| | |
| Morphine (Opium Alkaloid) |
32:51 | |
| | |
| Epibatidine (Poison Dart Frog) |
33:28 | |
| | |
| Nicotine |
33:48 | |
| | |
| Choline (Nerve Impulse) |
34:03 | |
| Part IV |
| |
Infrared Spectroscopy, Part I |
64:00 |
| | |
Intro |
0:00 | |
| | |
Infrared (IR) Spectroscopy |
0:09 | |
| | |
| Introduction to Infrared (IR) Spectroscopy |
0:10 | |
| | |
| Intensity of Absorption Is Proportional to Change in Dipole |
3:08 | |
| | |
IR Spectrum of an Alkane |
6:08 | |
| | |
| Pentane |
6:09 | |
| | |
IR Spectrum of an Alkene |
13:12 | |
| | |
| 1-Pentene |
13:13 | |
| | |
IR Spectrum of an Alkyne |
15:49 | |
| | |
| 1-Pentyne |
15:50 | |
| | |
IR Spectrum of an Aromatic Compound |
18:2 | |
| | |
| Methylbenzene |
18:24 | |
| | |
IR of Substituted Aromatic Compounds |
24:04 | |
| | |
| IR of Substituted Aromatic Compounds |
24:05 | |
| | |
IR Spectrum of 1,2-Disubstituted Aromatic |
25:30 | |
| | |
| 1,2-dimethylbenzene |
25:31 | |
| | |
IR Spectrum of 1,3-Disubstituted Aromatic |
27:15 | |
| | |
| 1,3-dimethylbenzene |
27:16 | |
| | |
IR Spectrum of 1,4-Disubstituted Aromatic |
28:41 | |
| | |
| 1,4-dimethylbenzene |
28:42 | |
| | |
IR Spectrum of an Alcohol |
29:34 | |
| | |
| 1-pentanol |
29:35 | |
| | |
IR Spectrum of an Amine |
32:39 | |
| | |
| 1-butanamine |
32:40 | |
| | |
IR Spectrum of a 2° Amine |
34:50 | |
| | |
| Diethylamine |
34:51 | |
| | |
IR Spectrum of a 3° Amine |
35:47 | |
| | |
| Triethylamine |
35:48 | |
| | |
IR Spectrum of a Ketone |
36:41 | |
| | |
| 2-butanone |
36:42 | |
| | |
IR Spectrum of an Aldehyde |
40:10 | |
| | |
| Pentanal |
40:11 | |
| | |
IR Spectrum of an Ester |
42:38 | |
| | |
| Butyl Propanoate |
42:39 | |
| | |
IR Spectrum of a Carboxylic Acid |
44:26 | |
| | |
| Butanoic Acid |
44:27 | |
| | |
Sample IR Correlation Chart |
47:36 | |
| | |
| Sample IR Correlation Chart: Wavenumber and Functional Group |
47:37 | |
| | |
Predicting IR Spectra: Sample Structures |
52:06 | |
| | |
| Example 1 |
52:07 | |
| | |
| Example 2 |
53:29 | |
| | |
| Example 3 |
54:40 | |
| | |
| Example 4 |
57:08 | |
| | |
| Example 5 |
58:31 | |
| | |
| Example 6 |
59:07 | |
| | |
| Example 7 |
60:52 | |
| | |
| Example 8 |
62:20 | |
| |
Infrared Spectroscopy, Part II |
48:34 |
| | |
Intro |
0:00 | |
| | |
Interpretation of IR Spectra: a Basic Approach |
0:05 | |
| | |
| Interpretation of IR Spectra: a Basic Approach |
0:06 | |
| | |
| Other Peaks to Look for |
3:39 | |
| | |
Examples |
5:17 | |
| | |
| Example 1 |
5:18 | |
| | |
| Example 2 |
9:09 | |
| | |
| Example 3 |
11:52 | |
| | |
| Example 4 |
14:03 | |
| | |
| Example 5 |
16:31 | |
| | |
| Example 6 |
19:31 | |
| | |
| Example 7 |
22:32 | |
| | |
| Example 8 |
24:39 | |
| | |
IR Problems Part 1 |
28:11 | |
| | |
| IR Problem 1 |
28:12 | |
| | |
| IR Problem 2 |
31:14 | |
| | |
| IR Problem 3 |
32:59 | |
| | |
| IR Problem 4 |
34:23 | |
| | |
| IR Problem 5 |
35:49 | |
| | |
| IR Problem 6 |
38:20 | |
| | |
IR Problems Part 2 |
42:36 | |
| | |
| IR Problem 7 |
42:37 | |
| | |
| IR Problem 8 |
44:02 | |
| | |
| IR Problem 9 |
45:07 | |
| | |
| IR Problems10 |
46:10 | |
| |
Nuclear Magnetic Resonance (NMR) Spectroscopy, Part I |
92:14 |
| | |
Intro |
0:00 | |
| | |
Purpose of NMR |
0:14 | |
| | |
| Purpose of NMR |
0:15 | |
| | |
How NMR Works |
2:17 | |
| | |
| How NMR Works |
2:18 | |
| | |
Information Obtained From a ¹H NMR Spectrum |
5:51 | |
| | |
| No. of Signals, Integration, Chemical Shifts, and Splitting Patterns |
5:52 | |
| | |
Number of Signals in NMR (Chemical Equivalence) |
7:52 | |
| | |
| Example 1: How Many Signals in ¹H NMR? |
7:53 | |
| | |
| Example 2: How Many Signals in ¹H NMR? |
9:36 | |
| | |
| Example 3: How Many Signals in ¹H NMR? |
12:15 | |
| | |
| Example 4: How Many Signals in ¹H NMR? |
13:47 | |
| | |
| Example 5: How Many Signals in ¹H NMR? |
16:12 | |
| | |
Size of Signals in NMR (Peak Area or Integration) |
21:23 | |
| | |
| Size of Signals in NMR (Peak Area or Integration) |
21:24 | |
| | |
Using Integral Trails |
25:15 | |
| | |
| Example 1: C₈H₁₈O |
25:16 | |
| | |
| Example 2: C₃H₈O |
27:17 | |
| | |
| Example 3: C₇H₈ |
28:21 | |
| | |
Location of NMR Signal (Chemical Shift) |
29:05 | |
| | |
| Location of NMR Signal (Chemical Shift) |
29:06 | |
| | |
¹H NMR Chemical Shifts |
33:20 | |
| | |
| ¹H NMR Chemical Shifts |
33:21 | |
| | |
¹H NMR Chemical Shifts (Protons on Carbon) |
37:03 | |
| | |
| ¹H NMR Chemical Shifts (Protons on Carbon) |
37:04 | |
| | |
Chemical Shifts of H's on N or O |
39:01 | |
| | |
| Chemical Shifts of H's on N or O |
39:02 | |
| | |
Estimating Chemical Shifts |
41:13 | |
| | |
| Example 1: Estimating Chemical Shifts |
41:14 | |
| | |
| Example 2: Estimating Chemical Shifts |
43:22 | |
| | |
| Functional Group Effects are Additive |
45:28 | |
| | |
Calculating Chemical Shifts |
47:38 | |
| | |
| Methylene Calculation |
47:39 | |
| | |
| Methine Calculation |
48:20 | |
| | |
| Protons on sp³ Carbons: Chemical Shift Calculation Table |
48:50 | |
| | |
| Example: Estimate the Chemical Shift of the Selected H |
50:29 | |
| | |
Effects of Resonance on Chemical Shifts |
53:11 | |
| | |
| Example 1: Effects of Resonance on Chemical Shifts |
53:12 | |
| | |
| Example 2: Effects of Resonance on Chemical Shifts |
55:09 | |
| | |
| Example 3: Effects of Resonance on Chemical Shifts |
57:08 | |
| | |
Shape of NMR Signal (Splitting Patterns) |
59:17 | |
| | |
| Shape of NMR Signal (Splitting Patterns) |
59:18 | |
| | |
Understanding Splitting Patterns: The 'n+1 Rule' |
61:24 | |
| | |
| Understanding Splitting Patterns: The 'n+1 Rule' |
61:25 | |
| | |
Explanation of n+1 Rule |
62:42 | |
| | |
| Explanation of n+1 Rule: One Neighbor |
62:43 | |
| | |
| Explanation of n+1 Rule: Two Neighbors |
66:23 | |
| | |
Summary of Splitting Patterns |
66:24 | |
| | |
| Summary of Splitting Patterns |
70:45 | |
| | |
Predicting ¹H NMR Spectra |
70:46 | |
| | |
| Example 1: Predicting ¹H NMR Spectra |
73:30 | |
| | |
| Example 2: Predicting ¹H NMR Spectra |
79:07 | |
| | |
| Example 3: Predicting ¹H NMR Spectra |
83:50 | |
| | |
| Example 4: Predicting ¹H NMR Spectra |
89:27 | |
| |
Nuclear Magnetic Resonance (NMR) Spectroscopy, Part II |
123:48 |
| | |
Intro |
0:00 | |
| | |
¹H NMR Problem-Solving Strategies |
0:18 | |
| | |
| Step 1: Analyze IR Spectrum (If Provided) |
0:19 | |
| | |
| Step 2: Analyze Molecular Formula (If Provided) |
2:06 | |
| | |
| Step 3: Draw Pieces of Molecule |
3:49 | |
| | |
| Step 4: Confirm Pieces |
6:30 | |
| | |
| Step 5: Put the Pieces Together! |
7:23 | |
| | |
| Step 6: Check Your Answer! |
8:21 | |
| | |
Examples |
9:17 | |
| | |
| Example 1: Determine the Structure of a C₉H₁₀O₂ Compound with the Following ¹H NMR Data |
9:18 | |
| | |
| Example 2: Determine the Structure of a C₉H₁₀O₂ Compound with the Following ¹H NMR Data |
17:27 | |
| | |
¹H NMR Practice |
20:57 | |
| | |
| ¹H NMR Practice 1: C₁₀H₁₄ |
20:58 | |
| | |
| ¹H NMR Practice 2: C₄H₈O₂ |
29:50 | |
| | |
| ¹H NMR Practice 3: C₆H₁₂O₃ |
39:19 | |
| | |
| ¹H NMR Practice 4: C₈H₁₈ |
50:19 | |
| | |
More About Coupling Constants (J Values) |
57:11 | |
| | |
| Vicinal (3-bond) and Geminal (2-bond) |
57:12 | |
| | |
| Cyclohexane (ax-ax) and Cyclohexane (ax-eq) or (eq-eq) |
59:50 | |
| | |
| Geminal (Alkene), Cis (Alkene), and Trans (Alkene) |
62:40 | |
| | |
| Allylic (4-bond) and W-coupling (4-bond) (Rigid Structures Only) |
64:05 | |
| | |
¹H NMR Advanced Splitting Patterns |
65:39 | |
| | |
| Example 1: ¹H NMR Advanced Splitting Patterns |
65:40 | |
| | |
| Example 2: ¹H NMR Advanced Splitting Patterns |
70:01 | |
| | |
| Example 3: ¹H NMR Advanced Splitting Patterns |
73:45 | |
| | |
¹H NMR Practice |
82:53 | |
| | |
| ¹H NMR Practice 5: C₁₁H₁₇N |
82:54 | |
| | |
| ¹H NMR Practice 6: C₉H₁₀O |
94:04 | |
| | |
¹³C NMR Spectroscopy |
104:49 | |
| | |
| ¹³C NMR Spectroscopy |
104:50 | |
| | |
¹³C NMR Chemical Shifts |
107:24 | |
| | |
| ¹³C NMR Chemical Shifts Part 1 |
107:25 | |
| | |
| ¹³C NMR Chemical Shifts Part 2 |
108:59 | |
| | |
¹³C NMR Practice |
110:16 | |
| | |
| ¹³C NMR Practice 1 |
110:17 | |
| | |
| ¹³C NMR Practice 2 |
118:30 | |