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(A) The reaction of $1$-methyl$-1-$vinylcyclopentane with $HBr$ proceeds via an electrophilic addition mechanism. $1$. The $H^+$ ion from $HBr$ attack

Vedclass · Accepted Answer

$1-$bromo$-1-$methylcyclohexane

Vedclass · Answer

(A) The reaction of $1$-methyl$-1-$vinylcyclopentane with $HBr$ proceeds via an electrophilic addition mechanism. $1$. The $H^+$ ion from $HBr$ attacks the double bond to form a more stable carbocation. $2$. The initial carbocation formed is a secondary carbocation on the side chain. $3$. To increase stability,the five-membered ring undergoes ring expansion to form a more stable six-membered ring carbocation. $4$. Finally,the $Br^-$ ion attacks the carbocation to form $1$-bromo$-1-$methylcyclohexane as the major product.

Product $(A)$ is

Similar Questions

The major products $A$ and $B$ in the following reactions are respectively:
i) Benzene $\xrightarrow{Cl_2/uv, 500K} A$
ii) $1-$Methylcyclohexene $\xrightarrow{HI} B$

Which of the following $C-H$ bond has the least bond dissociation energy?

Which of the following hydrocarbons has the lowest dipole moment?

Identify the product $B$ in the following reaction sequence:
$1,4-\text{cyclohexadiene-1,4-dicarboxylic acid}$ $\xrightarrow{NaOH} A$ $\xrightarrow{\text{Kolbe electrolysis}} B$

Choose the correct option$(s)$ that give$(s)$ an aromatic compound as the major product.

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