Oxidation of aldehyde and ketone by peroxybenzoic acid to ester is called:

Options

A. a.Elbs oxidation
B. b.Hell-Volhard-Zelinsky oxidation
C. c.Oppenaur oxidation
D. d.Baeyer-Villiger oxidation

Explanation

To answer the question regarding the oxidation of aldehydes and ketones by peroxybenzoic acid to form esters, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this reaction are aldehydes (R-CHO) and ketones (R-CO-R') which are carbonyl compounds. The oxidizing agent used is peroxybenzoic acid (PhCO3H).

2. **Understand the Reaction**: When aldehydes and ketones react with peroxybenzoic acid, they undergo oxidation. This reaction involves the addition of an oxygen atom to the carbonyl group, resulting in the formation of esters.

3. **Mechanism Overview**: The mechanism involves the formation of a peracid intermediate, which then leads to the migration of the alkyl group (R or R') and the formation of the ester. The reaction can be summarized as:
- Aldehyde/Ketone + Peroxybenzoic Acid → Ester

4. **Naming the Reaction**: The specific reaction where aldehydes and ketones are oxidized to esters by peroxybenzoic acid is known as the **Baeyer-Villiger oxidation**.

5. **Conclusion**: Therefore, the answer to the question is that the oxidation of aldehydes and ketones by peroxybenzoic acid to form esters is called the **Baeyer-Villiger oxidation**.