Question

Show how the reactant can be converted to the product in two steps.

Short answer

One or more carbon chains join the carbonyl carbons in the molecule of the cyclic ketone, which is a kind ofketone.

Step-by-step solution

What is acyclic ketone

One or more carbon chains join the carbonyl carbons in the molecule of the cyclic ketone, which is a kind ofketone.

Formation of Enol

Particularly while undergoing sigma tropical rearrangement, 1,5 diene often forms:

Formation of enol

Formation of acyclic ketone

This enol undergo automerization to a keto form which gives the product

Formation of acyclic ketone