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Question

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

A
1-phenylcyclopentene
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B
3-phenylcyclopentene
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C
4-phenylcyclopentene
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D
2-phenylcyclopentene
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Solution

trans 2-phenyl-1-bromocyclopentane on treating with alc. KOH gives mainly 3-phenylcyclopentene.The reaction is dehydrohalogenation.

The reaction is as follows:



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