Acetone on addition to methyl magnesium bromi | vedclass

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Question

(B) The reaction of acetone $(CH_3COCH_3)$ with methyl magnesium bromide $(CH_3MgBr)$ is a nucleophilic addition reaction.Acetone reacts with $CH_3MgB

Vedclass · Accepted Answer

$(CH_3)_3COH$

Vedclass · Answer

(B) The reaction of acetone $(CH_3COCH_3)$ with methyl magnesium bromide $(CH_3MgBr)$ is a nucleophilic addition reaction.Acetone reacts with $CH_3MgBr$ to form an addition complex,$(CH_3)_3COMgBr$.This complex,upon acid hydrolysis (decomposition with acid),yields a tertiary alcohol,$X$,which is $2$-methylpropan-$2$-ol or tert-butyl alcohol,$(CH_3)_3COH$,along with $Mg(OH)Br$.The reaction is: $(CH_3)_2C=O + CH_3MgBr$ $\rightarrow (CH_3)_3COMgBr$ $\xrightarrow{H_3O^+} (CH_3)_3COH + Mg(OH)Br$.

Acetone on addition to methyl magnesium bromide forms a complex,which on decomposition with acid gives $X$ and $Mg(OH)Br$. Which one of the following is $X$?

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