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
J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-1
  • Overview: What is Organic Chemistry?

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-4
  • Mechanisms with heterolytic fission

  • Q3: electrophilic addition, stability of carbocations

  • Q4: electrophilic addition (start from 12:45)

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-7
  • Q8: nucleophilic substitution of alcohols

  • Concept of leaving groups

Video 1-2
  • Overview of mechanisms

  • Mechanisms with homolytic fissionFree Radical Substitution

  • Q1: Determining ratio of mono-substituted products in a FRS reaction

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-3
  • Q2: Free radical substitution, stereoisomism

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-5
  • Q5: electrophilic substitution: generating of strong electrophile

  • Q6: electrophilic substitution (start from 6:44)

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-6
  • Q7: nucleophilic substitution 

  • Stereochemistry of Sn1 and Sn2 reactions

  • Factors determining Sn1 or Sn2 mechanisms

J2A-25 Mid-Year Review – O-Chem Mechanis
Video 1-8
  • Q9: nucleophilic addition, choice of reaction conditions

  • Q10: nucleophilic addition

JC2 Mid-Year Review (7) – Organic Chemistry – Transformations
J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-1
  • Overview

  • Q1: Substitution reactions: benzene and carboxylic acid derivatives

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-4
  • Q5: condensation and hydrolysis reactions

  • Mindmaps

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-2
  • Addition and elimination reactions

  • Q2, Q3: alkenes

  • Q4: carbonyl compounds

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-5
  • Q6, Q7: synthesis flows based on recall

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-3
  • Oxidation and reduction reactions

  • Comparing oxidising agents and reducing agents

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-6
  • Q8, Q9: recall questions with combined reactions

J2A-26_Mid-Year_Review_–_O-Chem_Transf
Video 1-7
  • Q10, Q11: full synthesis questions

JC2 Mid-Year Review (8) – Organic Chemistry – Resonance
J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-1
  • Overview

  • Delocalisation and resonance (benzene)

J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-4
  • Electronic effects affecting reactivities of substituted benzene rings (Q6)

J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-2
  • Resonance stability (Q1)

  • Effects on reactions and mechanisms (Q2)

J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-5
  • Relative acidity of carboxylic acids, phenols, and alcohols

  • Effects on acidity (Q7, Q8)

J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-3
  • Partial double bond character in halogenoarenes and phenols (Q3, Q4, Q5)

J2A-27 Mid-Year Review – O-Chem Resonanc
Video 1-6
  • Relative basicity of amines and amides

  • Effects on basicity and nucleophilicity (Q9, Q10)

JC2 Mid-Year Review (9) – Organic Chemistry – Elucidation
J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-1
  • Common reagents used in distinguishing tests (Q1)

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-4
  • Determining degrees of unsaturation (Q5)

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-2
  • Distinguishing tests strategies

  • Practice (Q2)

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-5
  • General strategies of elucidation

  • Q6: oxidation and reduction patterns

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-3
  • Distinguishing esters and amides (Q3, Q4)

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-6
  • Q7: use of oxidative cleavage reactions, and addition reactions

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-7
  • Q8: halogenation reactions and acid chlorides

J2A-28_Mid-Year_Review_–_O-Chem_Elucid
Video 1-8
  • Q9: solubility in acids and bases, and implicit condensation reactions