Identify the reagent used for the preparation | vedclass

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Question

(A) The reaction of benzonitrile $(C_6H_5CN)$ with phenylmagnesium bromide $(C_6H_5MgBr)$ in the presence of dry ether followed by acid hydrolysis $(H

Vedclass · Accepted Answer

$C_6H_5MgBr$

Vedclass · Answer

(A) The reaction of benzonitrile $(C_6H_5CN)$ with phenylmagnesium bromide $(C_6H_5MgBr)$ in the presence of dry ether followed by acid hydrolysis $(H_3O^+)$ yields benzophenone $(C_6H_5COC_6H_5)$.The reaction steps are:$1$. $C_6H_5-C \equiv N + C_6H_5-MgBr \xrightarrow{	ext{dry ether}} C_6H_5-C(C_6H_5)=NMgBr$$2$. $C_6H_5-C(C_6H_5)=NMgBr \xrightarrow{H_3O^+} C_6H_5-CO-C_6H_5 + NH_3 + Mg(Br)OH$Thus,the required reagent is $C_6H_5MgBr$.

Identify the reagent used for the preparation of benzophenone from benzonitrile.

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