Acetophenone can be prepared by Friedel crafts reaction between benzene and

Options

A. Benzoyl chloride
B. Benzyl chloride
C. Ethanoyl chloride
D. Methanoyl chloride

Explanation

To prepare acetophenone via the Friedel-Crafts reaction, we need to identify the appropriate reactant that will provide the necessary carbonyl and methyl groups. Here’s a step-by-step solution:

### Step 1: Understand the structure of acetophenone
Acetophenone has the structure C6H5C(O)CH3. This indicates that it consists of a phenyl group (C6H5) attached to a carbonyl group (C=O), which is further attached to a methyl group (CH3).

### Step 2: Identify the required reactants
In a Friedel-Crafts reaction, we typically react an aromatic compound (in this case, benzene) with an acyl halide to introduce an acyl group. The acyl group in acetophenone is derived from acetyl chloride (CH3C(O)Cl).

### Step 3: Write the reaction
The reaction can be summarized as follows:
1. Benzene (C6H6) reacts with acetyl chloride (CH3C(O)Cl) in the presence of a Lewis acid catalyst, such as aluminum chloride (AlCl3).
2. The reaction produces acetophenone (C6H5C(O)CH3) and hydrochloric acid (HCl) as a byproduct.

### Step 4: Conclusion
Thus, the correct answer is that acetophenone can be prepared by the Friedel-Crafts reaction between benzene and acetyl chloride.

### Final Answer:
Acetophenone can be prepared by Friedel-Crafts reaction between benzene and acetyl chloride (CH3C(O)Cl).

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