Q. When an arylhalide is treated with the very strong basic amide ion in liquid ammonia, it is converted into aniline. The intermediate in the reaction is _.

A
Benzyne
B
Phenyl cation
C
Phenyl carbanion
D
Free radical
Solution:
  • At a very low temperature, bromobenzene reacts with potassium amide (KNH 2) dissolved in liquid ammonia to form aniline.
  • The elimination-addition mechanism for the formation of aniline proceeds via a benzyne intermediate.
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