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(C) The reactivity towards $S_N1$ reaction depends on the stability of the carbocation intermediate formed during the rate-determining step.In $PhCHCl

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$PhCHCl(CH_3)$

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(C) The reactivity towards $S_N1$ reaction depends on the stability of the carbocation intermediate formed during the rate-determining step.In $PhCHCl(CH_3)$,the carbocation formed is $Ph-CH^+-CH_3$,which is a secondary benzylic carbocation.This carbocation is stabilized by both the phenyl ring (resonance) and the inductive effect of the methyl group.Comparing the options,$PhCHCl(CH_3)$ forms the most stable carbocation,making it the most reactive towards $S_N1$.

Which of the following compounds is most reactive towards $S_N1$ reaction?

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