Acetophenone is prepared from `:`

Options

A. Rosenmund reaction
B. Sandmeyer reaction
C. Wurtz reaction
D. Friedel craft reaction

Answer

To prepare acetophenone, we can utilize the Friedel-Crafts acylation reaction. Here’s a step-by-step breakdown of the process:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- We need benzene (C₆H₆) and acetyl chloride (CH₃COCl) as our starting materials.

2. **Use a Lewis Acid Catalyst**:
- To facilitate the reaction, we will use anhydrous aluminum chloride (AlCl₃) as a catalyst. This is a Lewis acid that helps in the formation of an electrophile.

3. **Formation of the Electrophile**:
- The acetyl chloride reacts with aluminum chloride to form an acetyl cation (CH₃C⁺O). This occurs as the AlCl₃ coordinates with the chlorine atom in acetyl chloride, making the carbonyl carbon more electrophilic.

4. **Electrophilic Attack**:
- The electrophile (acetyl cation) then attacks the benzene ring. This is an electrophilic substitution reaction where the π electrons of the benzene ring attack the positively charged carbon of the acetyl cation.

5. **Formation of Acetophenone**:
- This results in the formation of a resonance-stabilized carbocation intermediate. The intermediate then loses a proton (H⁺) to restore the aromaticity of the benzene ring, resulting in the formation of acetophenone (C₆H₅COCH₃).

6. **Final Product**:
- The final product of this reaction is acetophenone, which is represented as C₆H₅COCH₃.

### Summary:
The preparation of acetophenone involves the Friedel-Crafts acylation of benzene with acetyl chloride in the presence of anhydrous aluminum chloride as a catalyst.