Question

4-( phenyl) butanone -2 on react with Hydrazine and KOH gives

Answer 1

Hydrazine and KOH act as a reducing agent and a nucleophile respectively.

They reduce aldehydes and ketones to alkanes.

The reaction is called Wolff-Kishner reaction.

4-Phenyl butan-2-one + Hydrazine + Potassium hydroxide gives Butyl benzene.

(4-Phenyl)CH2-CH2-C(O)-CH3 + NH2NH2 + KOH =

(4-Phenyl)CH2-CH2-C(O)-CH3 + NH2NH2 + KOH = C6H5-CH2-CH2-CH2-CH3

where,

(4-Phenyl)CH2-CH2-C(O)-CH3 = 4-Phenyl butan-2-one

NH2NH2 = Hydrazine

KOH = Potassium hydroxide

C6H5-CH2-CH2-CH2-CH3 = Butyl benzene