Question
What is the best reagent to convert nitrile to primary amine?
$\text{R}-\text{CN}+4[\text{H}]\xrightarrow[\text{or LiAh}_4/\text{ether}]{\ \ \text{Na/C}_2\text{H}_5\text{OH}\ \ \ }\text{R}-\text{CH}_2\text{NH}_2\\\text{Alkyl nitrile}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Alkyl amine}(1^\circ)$
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$\text{C}_6\text{H}_5\text{NH}_2+\text{H}_2\text{SO}_4(\text{conc.})\rightarrow$
Zinc amalgam and dilute hydrochloric acid.
CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3