Correct representation of 3- methylpent-3-en-2-ol is

Options

A. ``
B.
C.
D.

Answer

To represent the compound 3-methylpent-3-en-2-ol correctly, we need to follow these steps:

### Step-by-Step Solution:

1. **Identify the Parent Chain**:
- The name "pent" indicates that the main carbon chain contains 5 carbon atoms. So, we will start by drawing a straight chain of 5 carbon atoms.
- Structure: C-C-C-C-C

2. **Number the Carbon Chain**:
- Number the carbon atoms in the chain from one end to the other. We can number them from left to right for clarity.
- Structure:
```
1 2 3 4 5
C-C-C-C-C
```

3. **Add the Double Bond**:
- The name "3-en" indicates that there is a double bond starting at the third carbon. Therefore, we will place a double bond between carbon 3 and carbon 4.
- Structure:
```
1 2 3 4 5
C-C-C=C-C
```

4. **Add the Hydroxyl Group (OH)**:
- The "2-ol" indicates that there is an alcohol (OH) group on the second carbon. We will add the OH group to carbon 2.
- Structure:
```
1 2 3 4 5
C-C(OH)-C=C-C
```

5. **Add the Methyl Group**:
- The "3-methyl" indicates that there is a methyl (CH3) group attached to the third carbon. We will add a CH3 group to carbon 3.
- Final Structure:
```
1 2 3 4 5
C-C(OH)-C(CH3)=C-C
```

6. **Complete the Structure**:
- Now, we can fill in the hydrogen atoms to complete the structure. Each carbon atom should have four bonds.
- Final Structure with Hydrogens:
```
H H OH H H
| | | | |
H--C---C---C---C---C--H
| | || |
H CH3 H H
```

### Final Representation:
The correct representation of 3-methylpent-3-en-2-ol is:
```
H H OH H H
| | | | |
H--C---C---C===C---C--H
| | | |
H CH3 H H
```