The compound that will undergo S_N 1 reaction | vedclass

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Question

(C) The rate of $S_N 1$ reaction depends on the stability of the carbocation intermediate formed in the rate-determining step.$1$. $1$-Phenylethyl bro

Vedclass · Accepted Answer

$1-$Phenylethyl bromide

Vedclass · Answer

(C) The rate of $S_N 1$ reaction depends on the stability of the carbocation intermediate formed in the rate-determining step.$1$. $1$-Phenylethyl bromide forms a secondary benzylic carbocation,which is highly stabilized by resonance with the benzene ring.$2$. Bromocyclohexane forms a secondary alkyl carbocation.$3$. (Cyclohexylmethyl) bromide forms a primary alkyl carbocation.$4$. Bromobenzene does not undergo $S_N 1$ reaction easily as the $C-Br$ bond has partial double bond character due to resonance.Since the secondary benzylic carbocation is the most stable among the options,$1$-phenylethyl bromide reacts the fastest.

The compound that will undergo $S_N 1$ reaction with the fastest rate is

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