A diene, buta - 1, 3 - diene was subjected to ozonolysis to prepare aldehydes. Which of the following aldehydes will be obtained during the reaction ?

Options

A. `overset(" CHO")underset(" CHO")("|") +2HCHO`
B. `CH_(3)CHO+2HCHO`
C. `CH_(3)CH_(2)CHO+CH_(3)CHO`
D. `2CH_(3)CH_(2)CHO`

Answer

To solve the problem of determining which aldehydes are produced from the ozonolysis of buta-1,3-diene, we can follow these steps:

### Step 1: Understand the Structure of Buta-1,3-diene
Buta-1,3-diene has the following structure:
\[ \text{CH}_2=CH-CH=CH_2 \]
This molecule has two double bonds, which are crucial for the ozonolysis reaction.

### Step 2: Ozonolysis Reaction
Ozonolysis involves the reaction of an alkene with ozone (O₃), leading to the formation of ozonides, which can then be cleaved to form carbonyl compounds (aldehydes or ketones).

### Step 3: Formation of Ozonide
When buta-1,3-diene reacts with ozone, it forms an ozonide intermediate. The double bonds in buta-1,3-diene will react with ozone to form a cyclic ozonide.

### Step 4: Cleavage of Ozonide
The ozonide is unstable and will undergo cleavage. This cleavage will occur at the carbon-carbon double bonds, resulting in the formation of aldehydes.

### Step 5: Identify the Aldehydes
From the ozonolysis of buta-1,3-diene, the products will be:
- From the terminal carbon (CH₂), we will get formaldehyde (HCHO).
- From the other end of the molecule, we will also get another molecule of formaldehyde (HCHO).
- The carbon in the middle will produce an aldehyde with a longer carbon chain, specifically propanal (C₂H₅CHO).

### Step 6: Conclusion
Thus, the aldehydes produced from the ozonolysis of buta-1,3-diene are:
- 2 molecules of formaldehyde (HCHO)
- 1 molecule of propanal (C₂H₅CHO)

### Final Answer
The correct aldehydes obtained during the ozonolysis of buta-1,3-diene are formaldehyde and propanal.

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