Online Videos –
JC2 Organic Chemistry (Mid-Year Review)
These videos of our regular classes are available to our regular class students.
Each lesson is broken up into a few videos. In the description below each video, you can look for the content or question that you would like to view or revisit.
JC2 Mid-Year Review (6) – Organic Chemistry – Mechanisms
Video 1-1
-
Overview: What is Organic Chemistry?
Video 1-2
-
Overview of mechanisms
-
Mechanisms with homolytic fission – Free Radical Substitution
-
Q1: Determining ratio of mono-substituted products in a FRS reaction
Video 1-3
-
Q2: Free radical substitution, stereoisomism
Video 1-4
-
Mechanisms with heterolytic fission
-
Q3: electrophilic addition, stability of carbocations
-
Q4: electrophilic addition (start from 12:45)
Video 1-5
-
Q5: electrophilic substitution: generating of strong electrophile
-
Q6: electrophilic substitution (start from 6:44)
Video 1-6
-
Q7: nucleophilic substitution
-
Stereochemistry of Sn1 and Sn2 reactions
-
Factors determining Sn1 or Sn2 mechanisms
JC2 Mid-Year Review (7) – Organic Chemistry – Transformations
Video 1-1
-
Overview
-
Q1: Substitution reactions: benzene and carboxylic acid derivatives
Video 1-4
-
Q5: condensation and hydrolysis reactions
-
Mindmaps
Video 1-2
-
Addition and elimination reactions
-
Q2, Q3: alkenes
-
Q4: carbonyl compounds
Video 1-5
-
Q6, Q7: synthesis flows based on recall
Video 1-3
-
Oxidation and reduction reactions
-
Comparing oxidising agents and reducing agents
Video 1-6
-
Q8, Q9: recall questions with combined reactions
Video 1-7
-
Q10, Q11: full synthesis questions
JC2 Mid-Year Review (8) – Organic Chemistry – Resonance
Video 1-1
-
Overview
-
Delocalisation and resonance (benzene)
Video 1-4
-
Electronic effects affecting reactivities of substituted benzene rings (Q6)
Video 1-2
-
Resonance stability (Q1)
-
Effects on reactions and mechanisms (Q2)
Video 1-5
-
Relative acidity of carboxylic acids, phenols, and alcohols
-
Effects on acidity (Q7, Q8)
Video 1-3
-
Partial double bond character in halogenoarenes and phenols (Q3, Q4, Q5)
Video 1-6
-
Relative basicity of amines and amides
-
Effects on basicity and nucleophilicity (Q9, Q10)
JC2 Mid-Year Review (9) – Organic Chemistry – Elucidation
Video 1-1
-
Common reagents used in distinguishing tests (Q1)
Video 1-4
-
Determining degrees of unsaturation (Q5)
Video 1-2
-
Distinguishing tests strategies
-
Practice (Q2)
Video 1-5
-
General strategies of elucidation
-
Q6: oxidation and reduction patterns
Video 1-3
-
Distinguishing esters and amides (Q3, Q4)
Video 1-6
-
Q7: use of oxidative cleavage reactions, and addition reactions
Video 1-7
-
Q8: halogenation reactions and acid chlorides
Video 1-8
-
Q9: solubility in acids and bases, and implicit condensation reactions