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JEE · NEET Previous Year Question

$Which of the following statement is incorrect in case of Hofmann bromamide degradation?$

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

A $Reaction is useful for decreasing length of carbon chain by one carbon atom.$
B $It gives tertiary amine.$
C $It gives primary amine.$
D $Aqueous or alcoholic KOH is used with bromine.$

Correct answer: B

Solution

(b): Hofmann bromamide reaction converts acid amides to primary amines. RCONH_{2} + Br_{2} + 4 KOH \to Heat RNH_{2} + 2 KBr + K_{2} CO_{3} + 2 H_{2} O Amine

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