A molecule P on treatment with acid undergoes | vedclass

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(D) The molecule $P$ is $1$-isopropylidenecyclopentane. Upon treatment with acid,it undergoes protonation followed by ring expansion and rearrangement

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$1-$isopropylidenecyclopentane

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(D) The molecule $P$ is $1$-isopropylidenecyclopentane. Upon treatment with acid,it undergoes protonation followed by ring expansion and rearrangement to form $1,2$-dimethylcyclohexene $(Q)$. Ozonolysis of $Q$ ($1,2$-dimethylcyclohexene) yields $2,6$-heptanedione. Subsequent reflux under alkaline conditions (aldol condensation) leads to the formation of $R$,which is $2$-acetyl-$1$-methylcyclopentene.

$A$ molecule $P$ on treatment with acid undergoes rearrangement and gives $Q$. $Q$ on ozonolysis followed by reflux under alkaline condition gives $R$. The structure of $R$ is given below:
[Image of $R$]
The structure of $P$ is

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$A$ molecule $P$ on treatment with acid undergoes rearrangement and gives $Q$. $Q$ on ozonolysis followed by reflux under alkaline condition gives $R$. The structure of $R$ is given below:[Image of $R$]The structure of $P$ is