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Organic Chemistry: Conformations, Stereochemistry, and Substitution Mechanisms Study Guide

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Conformations

  • Understanding what a conformer is.
    03:29

Newman Projections – Conformational Energy

  • How to draw a Newman Projection Energy Diagram.
    07:27
  • How sigma bond rotation is visualized
    03:11
  • The energy states of 3 different Newman Projections.
    03:51

Chair Flip

  • The 3 important factors when drawing chairs
    05:12

Cyclohexane – Chairs and Positions

  • What is a chair conformation?
    01:05
  • How chairs flip from one conformation to another
    02:22
  • How chairs flip from one conformation to another
    04:26

Cyclohexane – Determination of Cis and Trans

  • Is the following cyclohexane cis or trans?
    00:44
  • How to draw chairs.
    01:18
  • Is the following cyclohexane cis or trans?
    00:27

Cahn-Ingold-Prelog Nomenclature

  • R and S Naming- Step 4
    03:07
  • Why stereoisomers need their own naming system.
    01:48
  • Determining Priorities
    01:19

Chirality

  • Drawing Mirror Images and Determining Chirality
    03:24
  • What is chirality?
    05:10
  • Drawing Mirror Images and Determining Chirality
    03:44

Chirality Test 1 - Internal Line of Symmetry

  • Determining Chirality with Plane of Symmetry
    00:25
  • Determining Chirality with Plane of Symmetry
    01:10
  • How and when to use the internal line of symmetry test.
    01:25

Chirality Test 2 - Stereocenters

  • Determining Chirality using Stereocenter
    02:25
  • Determining Chirality using Stereocenter
    00:36
  • The difference between chiral and trigonal centers.
    02:38

Types of Stereoisomers

  • Determine total number of stereoisomers
    00:49
  • How to predict the total number of stereoisomers.
    01:03
  • Draw stereoisomers and determine relationship
    07:41

Substitution Comparison

  • How do we predict if the mechanism is SN1 or SN2?
    03:32

Introduction to Substitution

  • Predict the product
    05:55
  • Nucleophiles and Electrophiles can react in Bronsted-Lowry Reactions.
    05:01
  • Nucleophiles and Electrophiles can react in Substitution Reactions.
    01:47

Leaving Groups

  • Predict the best leaving group
    00:50
  • Predict the best leaving group
    01:12
  • Predict the best leaving group
    00:36

The SN2 Mechanism

  • Ranking reactivity toward SN2
    04:03
  • Drawing the SN2 Mechanism
    08:33
  • Understanding the properties of SN2.
    11:57

The SN1 Mechanism

  • Drawing the SN1 Mechanism
    10:49
  • Why highly substituted leaving groups favor SN1.
    01:13
  • Understanding the properties of SN1.
    08:16

Solvents

  • The difference between protic vs. aprotic solvents.
    03:57
  • Identification of polarity in solvents
    01:16
  • Identification of polarity in solvents
    00:39

Index of Hydrogen Deficiency (Structural)

  • Is the following molecule saturated?
    00:30
  • What is the IHD of the following molecule?
    00:45
  • What index of hydrogen deficiency is.
    01:15

Reaction Mechanism

  • How to tell if charged molecules will react as nucleophiles or electrophiles.
    02:39
  • Nucleophile or Electrophile
    01:49
  • How to tell if uncharged molecules will react as nucleophiles or electrophiles.
    02:48