Question

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is -

Answer 1

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Answer 2

Answer:

Explanation:

The reaction of carbonyl compounds with ammonia derivatives give the additional product followed by the elimination reaction. Thus, the slightly acidic medium generates a nucleophilic centre for the attack of weak base like ammonia derivatives.

The product formation is favoured due to therapid dehydration of the intermediate to form -C = NG.

The carbonyl compounds react with ammonia derivatives in weakly acidic medium as follows -

- OH, -NH2, -NHC6H5, - NHCONH2 etc

Thus, the reagent formed will be hydrazine in presence of feebly acidic solution.