Grignard reagent adds to

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Question

(D) Grignard reagents $(RMgX)$ are nucleophilic and readily undergo addition reactions with polar multiple bonds such as $C = O$,$-C \equiv N$,and $C

Vedclass · Accepted Answer

All of the above

Vedclass · Answer

(D) Grignard reagents $(RMgX)$ are nucleophilic and readily undergo addition reactions with polar multiple bonds such as $C = O$,$-C \equiv N$,and $C = S$ groups.$1$. Reaction with $C = O$: $RMgX + >C = O$ $\rightarrow >C(R)-OMgX$ $\xrightarrow{H_2O} >C(R)-OH + Mg(OH)X$$2$. Reaction with $-C \equiv N$: $RMgX + -C \equiv N$ $\rightarrow -C(R) = NMgX$ $\xrightarrow{H_2O} -C(R) = O + NH_3 + Mg(OH)X$$3$. Reaction with $C = S$: $RMgX + >C = S$ $\rightarrow >C(R)-SMgX$ $\xrightarrow{H_2O} >C(R)-SH + Mg(OH)X$Since Grignard reagents react with all these groups,the correct option is $(D)$.

List-$I$ (Type of reaction)	List-$II$ (Final Product)
$A$. Reimer-Tiemann reaction	$I$. Chlorobenzene
$B$. Etard reaction	$II$. Salicylaldehyde
$C$. Sandmeyer reaction	$III$. Benzaldehyde
$D$. Friedel-Crafts reaction	$IV$. Acetophenone

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