Question

# (-)-1-chloro-1-phenylethane in toluene racemises slowly in the presence of small amount of $$Sb{Cl}_{5}$$, due to the formation of:

A
cabanion
B
carbene
C
D
carbocation

Solution

## The correct option is A carbocationA planar cabocation is generated when $$Sb{Cl}_{5}$$ remove $${Cl}^{-}$$ from the substrate. Since the reactant is having chiral center.This carbocation is subsequently attacked by $${Cl}^{-}$$ (nucleophile) from both the sides (ie., from top and bottom) to produce a racemic mixture.Option D is correct.Chemistry

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