Alkyl Halides and Aryl HalidesHard

Question

The correct order of reactivity of the following benzyl halides towards reaction with KCN is:

Options

A.$a > b > c > d$

B.$b > a > d > c$

C.$b > a > c > d$

D.$a > b > d > d$

Solution

This is $S_{N}1$ reaction.

Rate of $S_{N}1$ reaction $\propto$ stability of carbocation

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