Which of the following perfome reaction with `I_(2)//OH^(-)` ?

Options

A. `CH_(3)COCH_(2)CH_(3)`
B. `CH_(3)CONH_(2)`
C. `C_(6)H_(5)COCH_(3)`
D. `CH_(3)CHO`

Explanation

To determine which compounds react with \( I_2 \) and \( OH^- \), we need to identify the structural requirements for such reactions. The key requirement is that the compound must have a methyl group adjacent to a carbonyl group (i.e., a methyl ketone or a suitable aldehyde). This is because the reaction leads to the formation of iodoform.

### Step-by-Step Solution:

1. **Identify the Compounds**: We need to analyze each of the given compounds to see if they have a methyl group adjacent to a carbonyl group.

2. **Examine Compound A**:
- The structure is \( CH_3COCH_2CH_3 \) (a methyl ketone).
- It has a methyl group (\( CH_3 \)) adjacent to the carbonyl (\( CO \)).
- **Conclusion**: This compound will react with \( I_2 \) and \( OH^- \) and give the iodoform test.

3. **Examine Compound B**:
- The structure is an amide.
- Amides do not have the required methyl group adjacent to a carbonyl for this reaction.
- **Conclusion**: This compound will NOT react with \( I_2 \) and \( OH^- \).

4. **Examine Compound C**:
- The structure has a methyl group adjacent to a carbonyl.
- This compound can also undergo the iodoform reaction.
- **Conclusion**: This compound will react with \( I_2 \) and \( OH^- \).

5. **Examine Compound D**:
- The structure is \( CH_3C(OH) \) (an alcohol with a methyl group).
- It has a methyl group adjacent to a carbonyl (considering the keto form).
- **Conclusion**: This compound will also react with \( I_2 \) and \( OH^- \).

6. **Final Answer**: The compounds that will react with \( I_2 \) and \( OH^- \) are A, C, and D.