question_answer

Reaction of trans-2-phenyl-1- bromocyclopentane on reaction with alcoholic \[KOH\]produces     AIEEE  Solved  Paper-2006

A) 4-phenylcyclopentene

B) 2-phenylcyclopentene

C) 1-phenylcyclopentene

D) 3-phenylcyclopentene

Correct Answer: D

Solution :

Anti-elimination, means ?H and the ?Br both departing group must be present at dihedral angle of\[1.80{}^\circ \](anti).