Which of the following names is not correctly written in front of the compound?

Options

A.
B.
C.
D.

Explanation

To determine which name is not correctly written in front of the compound, we need to analyze each option based on IUPAC nomenclature rules for organic compounds.

### Step-by-Step Solution:

1. **Identify the Compounds**: We need to look at the names provided and identify the structure they represent.
- **Option A**: Chloro-1-phenylmethane
- **Option B**: Bromo-1,1-dibromo-1-phenylmethane
- **Option C**: Chloro-4-phenylmethane
- **Option D**: 1-chloro-2-phenylmethane

2. **Analyze Each Name**:
- **Option A**: Chloro-1-phenylmethane
- This name suggests a chloro group is attached to a phenylmethane at the first carbon. This is a valid name.

- **Option B**: Bromo-1,1-dibromo-1-phenylmethane
- This name suggests multiple bromo groups on the first carbon of phenylmethane. However, the correct way to write it should not have "bromo" before "1,1-dibromo". This is incorrect nomenclature.

- **Option C**: Chloro-4-phenylmethane
- This name suggests a chloro group is attached to the fourth carbon of phenylmethane. This is also a valid name.

- **Option D**: 1-chloro-2-phenylmethane
- This name indicates a chloro group on the first carbon and a phenyl group on the second carbon. This is a valid name as well.

3. **Conclusion**:
- The name that is not correctly written is **Option B**: Bromo-1,1-dibromo-1-phenylmethane, as it incorrectly combines the prefixes and does not follow the correct IUPAC naming conventions.

### Final Answer:
The name that is not correctly written in front of the compound is **Option B: Bromo-1,1-dibromo-1-phenylmethane**.