Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces

Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces
  1. 4-phenylcyclopentene
  2. 2-phenylcyclopentene
  3. 1-phenylcyclopentene
  4. 3-phenylcyclopentene

Solution

According to ${E}_2$ mechanism.

Asked in: JEE Main 2006

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