A carbonyl compound can be prepared by hydration of acetylene. It reacts with ammonia to form (X) and with hydroxylamine to form (Y). It undergoes Wolf - Kishner reduction to form Z. X, Y and Z are

.When acetaldehyde reacts with hydroxyl amine by nucleophilic substitution reaction, the product formed is Acetaldoxime

The reaction of any aldehyde or ketone with hydrazine and the subsequent addition of base and heat will result in that aldehyde or ketone being reduced to an alkane, and is referred to as the Wolf-Kishner reaction.