Question

Iii.4-methypen-1-ene from structure

Answers

GPT-4o mini
To determine the structure of 4-methylpen-1-ene, we need to break down the name to understand its components.

1. **Pent-1-ene**: This indicates that the base structure is a five-carbon alkene (pentene) with a double bond at the first carbon.
2. **4-methyl**: This indicates a methyl group (-CH₃) is attached to the fourth carbon of the main chain.

Now, let's construct the structure step by step:

- Start with a straight-chain alkene with five carbons: C₅H₁₀ (the formula for pentene is C₅H₁₀).
- The double bond is located between carbon 1 and carbon 2.
- Then, add a methyl group to the fourth carbon.

The structure would look like this:

```
CH3
|
H2C=C-CH-CH2-CH3
|
H
```

In a more condensed structural formula, it can be represented as:

**CH2=CH-CH(CH3)-CH2-CH3**

This structure confirms that 4-methylpen-1-ene has a double bond starting at the first carbon, with a methyl group attached to the fourth carbon of the pentene chain.