The products obtained by ozonolysis of 2-ethylbut-l-ene are

Options

A. ethanal and pentan-3-one
B. methanal and pentan-3-one
C. propanone and propanal
D. methanal and pentan-2-one

Answer

To determine the products obtained by ozonolysis of 2-ethylbut-1-ene, we can follow these steps:

### Step 1: Draw the Structure of 2-Ethylbut-1-ene
2-Ethylbut-1-ene has the following structure:
- It consists of a butane backbone with an ethyl group at the second carbon and a double bond between the first and second carbon atoms.

The structure can be represented as:
```
CH3
|
CH3-CH-CH2-CH3
|
CH2
```

### Step 2: Identify the Double Bond
In 2-ethylbut-1-ene, the double bond is located between the first and second carbon atoms. This is crucial for the ozonolysis reaction, which involves breaking the double bond.

### Step 3: Perform Ozonolysis
Ozonolysis involves the reaction of the alkene with ozone (O₃), which leads to the formation of carbonyl compounds. The double bond will be cleaved, and each carbon atom involved in the double bond will be converted into a carbonyl group.

### Step 4: Determine the Products
When ozonolysis occurs, the double bond between the first and second carbon atoms will break, leading to the formation of:
- A ketone from the carbon chain on one side of the double bond.
- An aldehyde from the carbon chain on the other side of the double bond.

For 2-ethylbut-1-ene, the products are:
- **3-Pentanone** (from the carbon chain on one side)
- **Methanal (formaldehyde)** (from the carbon chain on the other side)

### Step 5: Write the Final Products
The final products obtained from the ozonolysis of 2-ethylbut-1-ene are:
- **3-Pentanone**
- **Methanal (formaldehyde)**

### Summary of Products:
- **3-Pentanone**
- **Methanal (formaldehyde)**

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