Question

Which of the following reagents is used in Mendius reduction reaction of alkyl cyanide?

Options

• \[\ce{Na/C2H5OH}\]

• \[\ce{Sn/HCl}\]

• \[\ce{Na-Hg/H2O}\]

• \[\ce{LiAlH2/Ether}\]

Answer 1

\[\ce{Na/C2H5OH}\]

Explanation:

Mendius reaction - Nitriles on reduction with Na in ethanol gives primary amines.

\[\ce{\underset{\text{Alkyl cyanide}}{R - C ≡ N} + 4[H] ->[Na/ethanol] \underset{\text{1° amine}}{R - CH2 - NH2}}\]