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Formation of Imines

Reaction of a...

Question

Reaction of a carbonyl compound with one of the following reagents involves a nucleophilic addition followed by a dehydration. The reagent is:

A

Hydrazine in feebly acidic medium

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B

Hydrocyanic acid

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C

Sodium hydrogen sulphite

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D

A Grignard reagent

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Solution

The correct option is A
Hydrazine in feebly acidic medium

$H C N$ , $N a H S O_{3}$ and Grignard reagents – all give only addition products. No further data for above options is given. Imine and acetal formation are acid catalyzed!

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