What is the compound A in the given reaction :

Options

A.
B.
C.
D. None

Answer

To determine the compound A in the given reaction, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
The reaction involves a compound with a fluorine atom (F) and a nitro group (NO2) on an aromatic ring, along with a nucleophile (OH-) from NaOH.

2. **Understand the Structure**:
The compound has a fluorine atom attached to a carbon in the aromatic ring, with a nitro group in the para position relative to the fluorine. The structure can be represented as:
- F on one carbon
- NO2 on the para carbon
- CH3 on another carbon

3. **Analyze the Effects of Substituents**:
The nitro group (NO2) exerts both a -R (resonance) effect and a -I (inductive) effect, pulling electron density away from the aromatic ring. This increases the positive character (δ+) on the carbon bonded to fluorine, making it more susceptible to nucleophilic attack.

4. **Nucleophilic Attack**:
The hydroxide ion (OH-) acts as a nucleophile and attacks the carbon atom that is bonded to the fluorine due to the increased δ+ character. This results in the substitution of the fluorine atom with a hydroxyl group (OH).

5. **Formation of Compound A**:
After the nucleophilic substitution, the structure of compound A will have the hydroxyl group (OH) in place of the fluorine atom. The final structure can be represented as:
- OH in place of F
- NO2 remains in the para position
- CH3 remains in its position

6. **Final Product**:
The final compound A can be represented as:
- A = 4-nitro-2-methylphenol (where OH replaces F).

### Conclusion:
Thus, the compound A formed in the reaction is **4-nitro-2-methylphenol**.