Niharika Kalita posted an Question
April 30, 2020 • 17:08 pm 4 points
  • IIT JAM
  • Chemistry (CY)

Sn1 mechanism for aromatic nucleophilic substitution is rare. why?

SN1 mechanism for aromatic nucleophilic substitution is rare. Why?

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    Lingareddy 1 best-answer

    The aromatic ring acts as a nucleophile, and attacks an added electrophile E An electron-deficient carbocation intermediate is formed (the rate-determining step) which is then deprotonated to restore aromaticity

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    Lingareddy 1

    Due to the presence of electron cloud of delocalised electron on benzene ring nucleophilic attack is difficult and thus normally does not undergo nucleophilic substitution reaction . Thus preferrably electrophilic substitution occurs

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    Suresh khokhar best-answer

    in SN1 reaction carbo cation is form but aromatic carbo cation is unstable

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