Which of the following compound would be expected to decarboxylates when heated:-

Options

A.
B.
C.
D.

Explanation

To determine which compound would be expected to decarboxylate when heated, we need to analyze the structures of the compounds provided. The key concept here is the presence of a beta-keto-carboxylic acid, which is known to decarboxylate upon heating.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- Let's denote the compounds as A, B, C, and D. We need to examine their structures to identify any beta-keto-carboxylic acids.

2. **Understand Beta-Keto-Carboxylic Acids**:
- A beta-keto-carboxylic acid has the general structure where a carboxylic acid group (-COOH) is adjacent (beta position) to a carbonyl group (C=O). This arrangement is crucial for the decarboxylation reaction.

3. **Examine Each Compound**:
- **Compound A**: Check if it has the structure of a beta-keto-carboxylic acid.
- **Compound B**: Analyze its structure similarly.
- **Compound C**: Look for the presence of the beta-keto structure.
- **Compound D**: Perform the same analysis.

4. **Identify the Correct Compound**:
- Upon examination, we find that **Compound A** fits the criteria of a beta-keto-carboxylic acid. It has a structure that allows for decarboxylation when heated.

5. **Decarboxylation Reaction**:
- When Compound A is heated, it will lose a molecule of carbon dioxide (CO2) and form a keto compound. The resulting product from Compound A will be acetone (CH3C(=O)CH3).

6. **Conclusion**:
- Therefore, the compound that would be expected to decarboxylate when heated is **Compound A**.

### Final Answer:
- The answer is **Compound A**.

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