Question:
The major product of carbylamine reaction is:
The major product of carbylamine reaction is:
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Carbylamine test detects {primary amines only}.
Product formed: {Isocyanide (foul smell)}.
Updated On: Mar 2, 2026
- Carboxylic acid
- Aldehyde
- Cyanide
- Isocyanide
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The Correct Option is D
Solution and Explanation
Concept:
The
carbylamine reaction is a characteristic test for primary amines. When a primary amine is heated with chloroform (\( CHCl_3 \)) and alcoholic KOH, it forms a foul-smelling compound called an
isocyanide (carbylamine). General reaction: \[ R{-}NH_2 + CHCl_3 + 3KOH \rightarrow R{-}NC + 3KCl + 3H_2O \]
Step 1: Reaction insight. Primary amines react with chloroform in the presence of base to produce: \[ R{-}NC \quad (\text{isocyanide}) \]
Step 2: Eliminate incorrect options.
Step 3: Final answer. \[ \therefore \text{Major product = Isocyanide} \]
carbylamine reaction is a characteristic test for primary amines. When a primary amine is heated with chloroform (\( CHCl_3 \)) and alcoholic KOH, it forms a foul-smelling compound called an
isocyanide (carbylamine). General reaction: \[ R{-}NH_2 + CHCl_3 + 3KOH \rightarrow R{-}NC + 3KCl + 3H_2O \]
Step 1: Reaction insight. Primary amines react with chloroform in the presence of base to produce: \[ R{-}NC \quad (\text{isocyanide}) \]
Step 2: Eliminate incorrect options.
- Carboxylic acid — not formed in this reaction.
- Aldehyde — unrelated transformation.
- Cyanide (\( R{-}CN \)) — different functional group from isocyanide.
Step 3: Final answer. \[ \therefore \text{Major product = Isocyanide} \]
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