Which of the following compounds on reaction | vedclass

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(B) The reaction of $CH_3MgBr$ (a Grignard reagent) with different functional groups yields different alcohols:$1$. $C_2H_5CHO$ (an aldehyde) reacts w

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$C_2H_5CO_2CH_3$

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(B) The reaction of $CH_3MgBr$ (a Grignard reagent) with different functional groups yields different alcohols:$1$. $C_2H_5CHO$ (an aldehyde) reacts with $CH_3MgBr$ to form a secondary alcohol.$2$. $C_2H_5CO_2CH_3$ (an ester) reacts with excess $CH_3MgBr$ to form a tertiary alcohol. The ester first reacts to form a ketone,which then reacts with another equivalent of $CH_3MgBr$ to form the tertiary alcohol after hydrolysis.$3$. $C_2H_5COOH$ (a carboxylic acid) reacts with $CH_3MgBr$ to release methane gas due to the acidic hydrogen,not forming a tertiary alcohol.$4$. $2,3-$epoxybutane reacts with $CH_3MgBr$ to form a secondary alcohol.Therefore,the ester $C_2H_5CO_2CH_3$ is the correct answer.

Which of the following compounds on reaction with excess $CH_3MgBr$ and subsequent hydrolysis will give a tertiary alcohol?

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