Which of The following alkene is most suitable for the preparation of butanone by Ozonolysis

Options

A.
B.
C.
D.

Answer

To determine which alkene is most suitable for the preparation of butanone by ozonolysis, we need to analyze each option provided. Ozonolysis is a reaction where an alkene reacts with ozone (O₃) to form carbonyl compounds, which can be either ketones or aldehydes.

### Step-by-step Solution:

1. **Understanding Ozonolysis**:
- Ozonolysis involves the cleavage of the double bond in an alkene, resulting in the formation of carbonyl compounds (ketones and/or aldehydes).
- The general reaction can be represented as:
\[ \text{Alkene} + O_3 \rightarrow \text{Carbonyl Compounds} \]

2. **Identifying Butanone**:
- Butanone (C₄H₈O) is a ketone with the structure CH₃COCH₂CH₃.
- Our goal is to find an alkene that, upon ozonolysis, will yield butanone as one of the products.

3. **Analyzing Each Alkene Option**:
- **Option A**: Let's assume this is 2-butene (CH₃-CH=CH-CH₃).
- Upon ozonolysis, it cleaves to form two molecules: CH₃COCH₂CH₃ (butanone) and CH₃CHO (acetaldehyde).
- This option yields butanone directly.

- **Option B**: Assume this is 1-butene (CH₂=CH-CH₂-CH₃).
- Upon ozonolysis, it would yield CH₃CHO (acetaldehyde) and CH₃CH₂CHO (butanal).
- This does not yield butanone.

- **Option C**: Assume this is 2-methylpropene (CH₂=C(CH₃)-CH₂-CH₃).
- Upon ozonolysis, it would yield CH₃COCH₃ (which is not butanone) and CH₃CHO (acetaldehyde).
- This does not yield butanone.

- **Option D**: Assume this is 3-hexene (CH₃-CH₂-CH=CH-CH₂-CH₃).
- Upon ozonolysis, it would yield CH₃COCH₂CH₃ (butanone) and CH₃CHO (acetaldehyde).
- This option also yields butanone.

4. **Conclusion**:
- After analyzing all the options, **Option A (2-butene)** is the most suitable alkene for the preparation of butanone by ozonolysis, as it directly yields butanone and acetaldehyde.

### Final Answer:
**The most suitable alkene for the preparation of butanone by ozonolysis is Option A (2-butene).**