In the given reaction,X will be:Cyclohexene x | vedclass

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(D) The reaction proceeds as follows:$1$. Cyclohexene reacts with $NBS$ ($N$-Bromosuccinimide) to undergo allylic bromination,forming $3$-bromocyclohe

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Cyclohex$-2-$ene$-1-$carboxylic acid

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(D) The reaction proceeds as follows:$1$. Cyclohexene reacts with $NBS$ ($N$-Bromosuccinimide) to undergo allylic bromination,forming $3$-bromocyclohexene.$2$. $3$-bromocyclohexene reacts with $Mg$ in the presence of ether to form the Grignard reagent,$3$-cyclohexenylmagnesium bromide.$3$. The Grignard reagent then reacts with $CO_2$ followed by acidic workup $(H^+)$ to form the carboxylic acid,cyclohex$-2-$ene$-1-$carboxylic acid.Thus,the final product $X$ is cyclohex$-2-$ene$-1-$carboxylic acid.

In the given reaction,$X$ will be:
Cyclohexene $\xrightarrow{NBS}$ $\xrightarrow[ether]{Mg}$ $\xrightarrow[2.H^{+}]{1.CO_2} X$

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In the given reaction,$X$ will be:Cyclohexene $\xrightarrow{NBS}$ $\xrightarrow[ether]{Mg}$ $\xrightarrow[2.H^{+}]{1.CO_2} X$