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Amines

Question
CBSEENCH12009126

A compound (X) having molecular formula C3H7NO, reacts with bromine and caustic soda to give another compound (Y). The compound (Y) reacts with HNO2 to form alcohol and nitrogen gas. Identify the compounds (X) and (Y) and write the chemical equations of the reactions involved.

Solution

As the compound (X) is giving a positive Hoffmann bromamide reaction, the compound (X) contains the CONH2 group. As only three carbons present, the structure of compound (X) is:
(X) → CH3CH2CONH2
Hoffmann bromamide reaction give 1° amine with one carbon less, therefore, the structure for compound (Y) is:
(Y) → CH3CH2NH2
The reaction involved are: