Which of the following is NOT a correct metho | vedclass

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Question

(A) Cyanobenzene $(C_6H_5CN)$ can be reduced to benzylamine $(C_6H_5CH_2NH_2)$ using strong reducing agents like $LiAlH_4$ or catalytic hydrogenation

Vedclass · Accepted Answer

$i$. $HCl/H_2O$  $ii$. $NaBH_4$

Vedclass · Answer

(A) Cyanobenzene $(C_6H_5CN)$ can be reduced to benzylamine $(C_6H_5CH_2NH_2)$ using strong reducing agents like $LiAlH_4$ or catalytic hydrogenation $(H_2/Ni)$.Option $A$ involves $HCl/H_2O$ (hydrolysis) which converts the nitrile to a carboxylic acid,and $NaBH_4$ is not strong enough to reduce nitriles to amines.Option $C$ involves the Stephen reduction $(SnCl_2/HCl)$ which typically reduces nitriles to imines,and $NaBH_4$ is not the standard reagent to complete this specific conversion to a primary amine.Therefore,options $A$ and $C$ are not standard methods for this preparation.

Which of the following is $NOT$ a correct method for the preparation of benzylamine $(C_6H_5CH_2NH_2)$ from cyanobenzene $(C_6H_5CN)$?

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