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Question

Why is Bromobenzene unreactive?


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Solution

Bromobenzene:

  • Bromobenze has the chemical formula C6H5Br.
  • The resonating structures of Bromobenzene are given below:

Reactivity:

  • In most SN1 and SN2 reactions, bromobenzene is unreactive.
  • It is mostly due to the extremely strong carbon-bromine bond present.
  • As a result, despite its capacity to exit the group, bromine will remain in the aromatic ring.
  • As a result, in the case of SN2, the ring structure prevents a backside assault, but in the case of SN1, carbocation does not occur.
  • Furthermore, phenyl carbocations are notoriously unstable.

Hence, Bromobenzene is unreactive.


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