Concept: Reaction of Cyclohexanone with Peroxy Acid (Baeyer-Villiger Oxidation)

This question involves the Baeyer-Villiger oxidation, a reaction where a ketone is converted into an ester using a peroxy acid. The key to solving this is understanding the mechanism and the migration aptitude of different groups.

Step-by-Step Solution:

Step 1: Identify the Reactants

The given reactant is Cyclohexanone: $(_{6} H_{10} O)$ . It is reacting with a peroxy acid (RCOOOH).

Step 2: Understand the Baeyer-Villiger Mechanism

The peroxy acid adds across the carbonyl group. This is followed by the migration of one of the groups attached to the carbonyl carbon to the oxygen atom of the peroxide group. The general reaction is:

$R - C (=O) - R^{'} + R C O_{3} H \to R - C (=O) - O - R^{'} + R C O O H$

Step 3: Apply it to a Symmetric Ketone (Cyclohexanone)

Cyclohexanone is a cyclic ketone. Both groups attached to the carbonyl carbon are identical $(- C_{5} H_{10} -)$ . Therefore, the migration of either group leads to the same product: a 7-membered cyclic ester known as ε-caprolactone.

Final Answer: The product A is Caprolactone structure .

Related Topics & Formulae

1. Baeyer-Villiger Oxidation: A reaction where a ketone is oxidized to an ester by a peroxyacid or hydrogen peroxide.

2. Key Concept - Migration Aptitude: The group that migrates does so with its retention of configuration. The relative migratory aptitude is: Tertiary alkyl > Cyclohexyl > Secondary alkyl > Phenyl > Primary alkyl > Methyl. This is crucial for unsymmetrical ketones.

3. General Reaction:

$R - C (=O) - R^{'} \underset{R C O_{3} H}{\to} R - C (=O) - O - R^{'}$

4. Common Peroxyacids: meta-Chloroperoxybenzoic acid (mCPBA) and Peroxyacetic acid are frequently used.