In the following reaction sequence,identify p | vedclass

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(A) The reaction sequence is as follows:$1$. The alkyl bromide $Me-CH_2-C\equiv C-CH_2-Br$ reacts with $Mg$ in the presence of ether to form a Grignar

Vedclass · Accepted Answer

$Me-CH_2-C\equiv C-CH_2-COOH$ and $SOCl_2$

Vedclass · Answer

(A) The reaction sequence is as follows:$1$. The alkyl bromide $Me-CH_2-C\equiv C-CH_2-Br$ reacts with $Mg$ in the presence of ether to form a Grignard reagent $(R-MgBr)$.$2$. The Grignard reagent then reacts with $CO_2$ followed by acidic hydrolysis $(H_3O^+)$ to yield a carboxylic acid,$Q$,which is $Me-CH_2-C\equiv C-CH_2-COOH$.$3$. The carboxylic acid $Q$ is then converted into an acid chloride by reaction with $SOCl_2$ (reagent $R$).Thus,$Q$ is $Me-CH_2-C\equiv C-CH_2-COOH$ and $R$ is $SOCl_2$.

In the following reaction sequence,identify product $Q$ and reagent $R$:

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