The major products P and Q in the following r | vedclass

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(A) Step $1$: The reaction of benzaldehyde oxime $(C_6H_5-CH=NOH)$ with acetic anhydride $((CH_3CO)_2O)$ causes dehydration to form benzonitrile $(P =

Vedclass · Accepted Answer

$P$ = $C_6H_5-CN$,$Q$ = $C_6H_5-CO-CH_3$

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(A) Step $1$: The reaction of benzaldehyde oxime $(C_6H_5-CH=NOH)$ with acetic anhydride $((CH_3CO)_2O)$ causes dehydration to form benzonitrile $(P = C_6H_5-CN)$.Step $2$: The reaction of benzonitrile $(C_6H_5-CN)$ with methylmagnesium iodide $(CH_3MgI)$ followed by acid hydrolysis $(H_3O^+)$ is a standard method to prepare ketones. The Grignard reagent attacks the nitrile carbon to form an imine intermediate,which upon hydrolysis yields acetophenone $(Q = C_6H_5-CO-CH_3)$.

The major products $P$ and $Q$ in the following reactions are:
$C_6H_5-CH=NOH$ $\xrightarrow{(i) (CH_3CO)_2O} P$ $\xrightarrow{(i) CH_3MgI, (ii) H_3O^+} Q$

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The major products $P$ and $Q$ in the following reactions are:$C_6H_5-CH=NOH$ $\xrightarrow{(i) (CH_3CO)_2O} P$ $\xrightarrow{(i) CH_3MgI, (ii) H_3O^+} Q$