Reaction of trans 2–phenyl –1 – bromocyclopentane on reactio... | CHEMISTRY - ALCOHOLS AND PHENOLS | SolveeIt | Solveeit

Today, August 20

Question

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

A

2–phenylcyclopentene

B

1–phenylcyclopentene

C

3-phenylcyclopentene

D

4-phenylcyclopentene

Answer

3-phenylcyclopentene

Explanation

Solution

$\xrightarrow { \text { alc. } \mathrm { KOH } }$

It is anti elimination reaction so hydrogen atom from second carbon will not eliminated as it is in syn-position rather hydrogen atom from 5th carbon will be eliminated.