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Question:

In the following reaction CH3CHO + NH2.NH2 → A → B CH3CH3 + N. Identify A and B

CH3CH2−NH2 and C2H5ONa

CH3−NH−NH−CH3 and C2H5OH

CH3CH2NH2 and C2H5OH

CH3CH=NNH2 and C2H5ONa

Solution:

Correct option is A. CH3CH=NNH2 and C2H5ONa. Reaction of Aldehydes or Ketones with Hydrazine Produces a Hydrazone which when react with base gives ethane. (Wolff-Kishner reduction)