Benzene reacts with `CH_3COCl` in the presence of `AlCl_3` to give

Options

A. `C_6H_5Cl`
B. `C_6H_5COCl`
C. `C_6H_5CH_3`
D. `C_6H_5COCH_3`

Explanation

To solve the problem of what product is formed when benzene reacts with CH₃COCl (acetyl chloride) in the presence of AlCl₃ (aluminum chloride), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants are benzene (C₆H₆) and acetyl chloride (CH₃COCl).

2. **Understand the Role of AlCl₃**:
- Aluminum chloride (AlCl₃) acts as a Lewis acid. It coordinates with the acetyl chloride to form a more reactive electrophile. This is essential for the electrophilic substitution reaction to occur.

3. **Formation of the Electrophile**:
- When AlCl₃ interacts with CH₃COCl, it forms an acetyl cation (CH₃C^+=O) and a complex of AlCl₄⁻. The acetyl cation is a strong electrophile that can attack the benzene ring.

4. **Electrophilic Substitution Reaction**:
- The benzene ring, being rich in π electrons, attacks the acetyl cation. This results in the substitution of one hydrogen atom on the benzene ring with the acetyl group (COCH₃).

5. **Formation of the Product**:
- The product formed from this reaction is acetophenone (C₆H₅COCH₃), where the benzene ring has been substituted with an acetyl group.

6. **Final Product**:
- The final product of the reaction is C₆H₅COCH₃ (acetophenone).

### Summary of the Reaction:
Benzene + CH₃COCl (in the presence of AlCl₃) → C₆H₅COCH₃ (acetophenone)