Question

The final product obtained in the following. $H_2SO_4 \over \Delta$ 'P'

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Answer 2

The reaction is an acid-catalyzed dehydration of a bicyclic alcohol. The strained cyclobutane ring is likely to undergo ring opening and rearrangement, leading to a more stable fused ring system. The formation of bicyclo[3.3.0]oct-1(5)-ene (option A) is a common outcome for such transformations involving Wagner-Meerwein rearrangements. The process involves protonation of the hydroxyl group, loss of water to form a carbocation, rearrangement to relieve strain and form a more stable carbocation, and finally elimination of a proton to form the alkene.