Why nucleophilic substitution reaction do not take place in aryl halide and alkyl halide
Asked by priadkonkar | 21st Jan, 2019, 08:52: PM
There is an interaction between one of the lone pairs on the halogen atom and the π electrons of the ring, and this strengthens the bond.
So it is difficult to break the bond.
The electron-withdrawing polar effect of the ring double bonds destabilises an aryl cation.
They require very high energy for the formation of carbocation intermediate -aryl cation.
Thus making SN1 reactions impossible.
Answered by Varsha | 21st Jan, 2019, 10:01: PM
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