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 solve 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 reaction involves aldehydes (RCHO) and ketones (R2C=O) being oxidized by peroxybenzoic acid (PhC(O)OOH).

2. **Understand the Reaction Mechanism**:
- When aldehydes or ketones react with peroxybenzoic acid, they undergo a transformation where the carbonyl group (C=O) is oxidized, leading to the formation of esters (RCOOR').

3. **Recognize the Type of Reaction**:
- This specific reaction is a type of oxidation where the carbonyl compounds are converted to esters through the addition of the peroxy group (OOH) from peroxybenzoic acid.

4. **Determine the Name of the Reaction**:
- The oxidation of aldehydes and ketones by peroxybenzoic acid is specifically known as the **Baeyer-Villiger oxidation**. This is a well-known reaction in organic chemistry.

5. **Eliminate Other Options**:
- The other options provided (Allylic oxidation, HVZ reaction, and open air oxidation) do not correspond to the reaction described in the question.
- Allylic oxidation involves different reagents, HVZ reaction involves halogenation, and open air oxidation involves the oxidation of alcohols.

6. **Conclude the Answer**:
- Therefore, the correct answer to the question is **Baeyer-Villiger oxidation**.

### Final Answer:
The oxidation of aldehyde and ketone by peroxybenzoic acid to ester is called **Baeyer-Villiger oxidation**.

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