For every ISC Class 12 Chemistry student, Name Reactions are not just a list to memorise — they are the language of Organic Chemistry. Almost every organic conversion, mechanism-based explanation, or reasoning question in the board exam is anchored to one or more name reactions.
From Aldol condensation to Wurtz-Fittig reaction, these reactions help you:
- Predict products,
- Understand reaction pathways,
- Justify reagents and conditions,
- And solve multi-step conversion problems confidently.
Let’s understand why they are important, how to prepare them smartly, what type of questions are asked, and how to revise quickly using the NAME REACTION sheet.
From Aldol condensation to Wurtz-Fittig reaction, these reactions help you:
- Predict products,
- Understand reaction pathways,
- Justify reagents and conditions,
- And solve multi-step conversion problems confidently.
Let’s understand why they are important, how to prepare them smartly, what type of questions are asked, and how to revise quickly using the NAME REACTION sheet.
1. Why Name Reactions Are So Important for ISC
In ISC Chemistry, questions are rarely of the “write the reaction” type alone. Name reactions appear in:
- Conversions (A → B → C),
- Reason-based questions,
- Reagent identification,
- Distinguishing tests,
- Product prediction.
For example:
- Cannizzaro reaction explains disproportionation of aldehydes without α-hydrogen.
- HVZ reaction explains α-halogenation of carboxylic acids.
- Sandmeyer and Gattermann reactions are central to diazonium salt chemistry.
- Reimer–Tiemann connects phenols with aldehyde formation.
- Hofmann Bromamide explains chain shortening.
So learning Name Reactions is essentially learning how organic chemistry behaves.
In ISC Chemistry, questions are rarely of the “write the reaction” type alone. Name reactions appear in:
- Conversions (A → B → C),
- Reason-based questions,
- Reagent identification,
- Distinguishing tests,
- Product prediction.
For example:
- Cannizzaro reaction explains disproportionation of aldehydes without α-hydrogen.
- HVZ reaction explains α-halogenation of carboxylic acids.
- Sandmeyer and Gattermann reactions are central to diazonium salt chemistry.
- Reimer–Tiemann connects phenols with aldehyde formation.
- Hofmann Bromamide explains chain shortening.
So learning Name Reactions is essentially learning how organic chemistry behaves.
2. How to Prepare Name Reactions Effectively
Instead of rote learning, follow this 4-step strategy:
Instead of rote learning, follow this 4-step strategy:
Step 1: Group Them Conceptually
Group reactions based on what they do:
Purpose
Examples
Chain length change
Arndt–Eistert, Hofmann, Hunsdiecker
Oxidation
Etard, Elbs
Reduction
Clemmensen, Wolff–Kishner, Rosenmund
Condensation
Aldol, Claisen, Benzoin, Perkin
Aromatic substitution
Friedel–Crafts, Reimer–Tiemann
Diazonium chemistry
Diazotisation, Sandmeyer, Gattermann, Coupling
“Less to memorise, more to actually understand.”
Group reactions based on what they do:
| Purpose | Examples |
|---|---|
| Chain length change | Arndt–Eistert, Hofmann, Hunsdiecker |
| Oxidation | Etard, Elbs |
| Reduction | Clemmensen, Wolff–Kishner, Rosenmund |
| Condensation | Aldol, Claisen, Benzoin, Perkin |
| Aromatic substitution | Friedel–Crafts, Reimer–Tiemann |
| Diazonium chemistry | Diazotisation, Sandmeyer, Gattermann, Coupling |
“Less to memorise, more to actually understand.”
Step 2: Learn Each Reaction in a Fixed Pattern
For every reaction, prepare:
- Reactant type
- Reagent/conditions
- Product
- Special feature or limitation
Example:
Cannizzaro Reaction
- Reactant: Aldehyde without α-hydrogen
- Reagent: Conc. alkali
- Product: Alcohol + salt of acid
- Special: Self oxidation–reduction
For every reaction, prepare:
- Reactant type
- Reagent/conditions
- Product
- Special feature or limitation
Example:
Cannizzaro Reaction
- Reactant: Aldehyde without α-hydrogen
- Reagent: Conc. alkali
- Product: Alcohol + salt of acid
- Special: Self oxidation–reduction
Step 3: Link Each Reaction to a Chapter
- Aldol, Cannizzaro → Aldehydes & Ketones
- Reimer–Tiemann, Kolbe, Elbs → Phenols
- Hofmann, Carbylamine → Amines
- Sandmeyer, Coupling → Diazonium salts
- HVZ → Carboxylic acids
This helps you recall reactions during chapter-based revision.
- Aldol, Cannizzaro → Aldehydes & Ketones
- Reimer–Tiemann, Kolbe, Elbs → Phenols
- Hofmann, Carbylamine → Amines
- Sandmeyer, Coupling → Diazonium salts
- HVZ → Carboxylic acids
This helps you recall reactions during chapter-based revision.
3. Types of Questions Based on Name Reactions
1. Direct Questions
Name the reaction: Conversion of phenol to salicylaldehyde.
Answer: Reimer–Tiemann reaction.
Name the reaction: Conversion of phenol to salicylaldehyde.
Answer: Reimer–Tiemann reaction.
2. Conversion-Based
Convert benzene to p-hydroxyazobenzene.
(Requires diazotisation + coupling reaction.)
Convert benzene to p-hydroxyazobenzene.
(Requires diazotisation + coupling reaction.)
3. Reasoning-Based
Why benzaldehyde undergoes Cannizzaro reaction but ethanal does not?
Why benzaldehyde undergoes Cannizzaro reaction but ethanal does not?
4. Reagent Identification
Which reagent converts an acid chloride into aldehyde?
Answer: Rosenmund reduction.
Which reagent converts an acid chloride into aldehyde?
Answer: Rosenmund reduction.
5. Distinguishing Test
Distinguish between primary, secondary and tertiary amines (Carbylamine test).
Distinguish between primary, secondary and tertiary amines (Carbylamine test).
6. Mechanism / Conceptual
Explain the role of red phosphorus in HVZ reaction.
So Name Reactions are not isolated facts — they are tested in multiple formats.
Explain the role of red phosphorus in HVZ reaction.
So Name Reactions are not isolated facts — they are tested in multiple formats.
4. How to Revise Quickly Using the Attached Sheet
The attached sheet is ideal for rapid revision because it lists reactions concisely with conditions and examples
The attached sheet is ideal for rapid revision because it lists reactions concisely with conditions and examples
Quick Revision Plan (30–40 minutes)
Round 1: Scan (10 min)
Just read names and identify:
- Type of reaction
- Chapter
No deep thinking yet.
Just read names and identify:
- Type of reaction
- Chapter
No deep thinking yet.
Round 2: Active Recall (15 min)
Cover the explanation and ask:
- What is the reagent?
- What is the product?
- What is special about it?
Cover the explanation and ask:
- What is the reagent?
- What is the product?
- What is special about it?
Round 3: Self-Test (10 min)
Try writing:
- 5 random conversions
- 5 “Name the reaction” questions
- 3 reasoning questions
Try writing:
- 5 random conversions
- 5 “Name the reaction” questions
- 3 reasoning questions
Last Night Before Exam
- Read only names + reagents + product type.
- Do NOT open heavy textbooks.
- Read only names + reagents + product type.
- Do NOT open heavy textbooks.
Final Advice
Name Reactions are the skeleton of Organic Chemistry in ISC. If you master them:
- Conversions become easy,
- Reasoning becomes logical,
- And organic chemistry stops feeling random.
Use the following Name Reaction sheet not as a memorisation list — but as a revision map to connect reactions, chapters, and concepts.
If you do that, Organic Chemistry becomes one of the most scoring parts of the ISC exam.
Happy learning and best wishes for your Chemistry preparation!
Name Reactions are the skeleton of Organic Chemistry in ISC. If you master them:
- Conversions become easy,
- Reasoning becomes logical,
- And organic chemistry stops feeling random.
Use the following Name Reaction sheet not as a memorisation list — but as a revision map to connect reactions, chapters, and concepts.
If you do that, Organic Chemistry becomes one of the most scoring parts of the ISC exam.