A solution of D(+)-1-chloro-1-phenylethane in | vedclass

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(D) $SbCl_5$ is a strong Lewis acid. It reacts with the $C-Cl$ bond of $1-$chloro$-1-$phenylethane to abstract the chloride ion,forming a stable benzy

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Carbocation

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(D) $SbCl_5$ is a strong Lewis acid. It reacts with the $C-Cl$ bond of $1-$chloro$-1-$phenylethane to abstract the chloride ion,forming a stable benzylic carbocation intermediate: $Ph-CH(CH_3)-Cl + SbCl_5 \rightarrow [Ph-CH^+(CH_3)] + [SbCl_6]^-$. Since the carbocation is planar,the chloride ion can attack from either side,leading to the formation of a racemic mixture of the $(d)$ and $(l)$ forms.

$A$ solution of $D(+)-1-$chloro$-1-$phenylethane in toluene racemises slowly in the presence of a small amount of $SbCl_5$,due to the formation of:

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