In the presence of aluminimum ethoxide aldehydes are converted into esters. The reaction is called

Options

A. Schmidt reaction
B. Aldol condensation
C. Beckmann rearragement
D. Tischenko reaction.

Explanation

To solve the question regarding the conversion of aldehydes into esters in the presence of aluminum ethoxide, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The question states that aldehydes are treated with aluminum ethoxide. For example, let’s consider acetaldehyde (CH₃CHO) as our aldehyde.

2. **Understand the Role of Aluminum Ethoxide**: Aluminum ethoxide (Al(OEt)₃) acts as a catalyst in this reaction. It facilitates the conversion of the aldehyde to an ester.

3. **Reaction Mechanism**: When acetaldehyde reacts with aluminum ethoxide, the aldehyde undergoes a reaction where it forms an ester. The reaction can be represented as follows:
- Acetaldehyde (CH₃CHO) + Aluminum Ethoxide (Al(OEt)₃) → Ethyl Acetate (CH₃COOCH₂CH₃)

4. **Identify the Product**: The product formed from this reaction is ethyl acetate (CH₃COOCH₂CH₃), which is an ester.

5. **Name the Reaction**: This specific reaction, where aldehydes are converted into esters using aluminum ethoxide, is known as the **Tishchenko reaction**.

6. **Conclusion**: Therefore, the reaction in which aldehydes are converted into esters in the presence of aluminum ethoxide is called the Tishchenko reaction.

### Final Answer:
The reaction is called the **Tishchenko reaction**.