Question
Give the structural formula for 1,4-pentene acid
Answers
GPT-4o mini
1,4-Pentene acid, also known as 4-pentenoic acid, is an unsaturated carboxylic acid with a pentene chain. The structural formula can be represented as follows:
```
H H H O
| | | ||
H — C — C — C — C — C — OH
| | |
H H H
```
In a more linear representation, the structural formula can be written as:
```
CH2=CH-CH2-COOH
```
This shows that there is a double bond between the first and second carbon atoms (from the carboxylic acid end), leaving the carboxyl group (-COOH) at the terminal end of the chain.
```
H H H O
| | | ||
H — C — C — C — C — C — OH
| | |
H H H
```
In a more linear representation, the structural formula can be written as:
```
CH2=CH-CH2-COOH
```
This shows that there is a double bond between the first and second carbon atoms (from the carboxylic acid end), leaving the carboxyl group (-COOH) at the terminal end of the chain.