Q144 / 200 · MHT CET - Medical 2026 (21 April Shift 1) · Chemistry
Identify the reaction that converts $\text{CH}_3\text{CN}$ to $\text{CH}_3\text{-CH}_2\text{-NH}_2$ .
- Correct answerAMendius reduction
- BHoffman reduction
- CClemmenson reduction
- DRosenmund reduction
Solution
The conversion of an alkyl cyanide (nitrile) to a primary amine by reduction is known as the Mendius reduction.
$\text{CH}_3\text{CN} + 4[\text{H}] \xrightarrow{\text{Na/C}_2\text{H}_5\text{OH}} \text{CH}_3\text{CH}_2\text{NH}_2$
Hoffmann reduction is used for converting amides to primary amines with one less carbon atom.
Clemmensen reduction is used for reducing aldehydes and ketones to alkanes.
Rosenmund reduction is used for reducing acid chlorides to aldehydes.
Answer: Mendius reduction
$\text{CH}_3\text{CN} + 4[\text{H}] \xrightarrow{\text{Na/C}_2\text{H}_5\text{OH}} \text{CH}_3\text{CH}_2\text{NH}_2$
Hoffmann reduction is used for converting amides to primary amines with one less carbon atom.
Clemmensen reduction is used for reducing aldehydes and ketones to alkanes.
Rosenmund reduction is used for reducing acid chlorides to aldehydes.
Answer: Mendius reduction
Hence, the correct answer is option: 'A'.