In the Hofmann's method for separation of `1^(@),2^(@)and3^(@)` amines, the reagent used is

Options

A. acetyl chloride
B. benzene sulphonyl chloride
C. diethyl oxalate
D. nitrous acid

Answer

C

Explanation

The mixture of three amines is treated with diethyl oxalate (Hofmann.s reagent). The primary amine forms a solid dialkyl oxamide, a secondary amine gives a liquid oxamic ester while tertiary amine does not react.