Question

Question: What steps are needed to convert A to B?

Short answer

Answer

Step-by-step solution

Ozonolysis

${\mathit{O}}_{\mathbf{3}}$in the presence of ${\left(C{H}_3\right)}_{\mathbf{2}}\mathit{S}$ introduces double-bonded oxygen at each of the carbon in the C=C bond.

Intra-molecular aldol reaction

In acyclic compounds containing two carbonyl groups, the aldol reaction may help to form either a five or a six-membered ring.

Steps of the given reaction

The above-given reaction proceeds via two reactions. Both of these steps are shown here under.