Aniline on reaction with acetyl chloride gives

Options

A. Phenol
B. Acetamide
C. Acetanilide
D. Benzene

Answer

To solve the question of what aniline reacts with acetyl chloride to produce, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- Aniline (C6H5NH2) is an amine with an amino group (-NH2) attached to a benzene ring.
- Acetyl chloride (CH3COCl) is an acyl chloride.

2. **Understand the Reaction Conditions**:
- The reaction typically occurs in the presence of a base, such as pyridine, which helps to neutralize the hydrochloric acid (HCl) produced during the reaction.

3. **Mechanism of Reaction**:
- The lone pair of electrons on the nitrogen atom of aniline attacks the electrophilic carbon atom of the carbonyl group (C=O) in acetyl chloride.
- This results in the formation of a tetrahedral intermediate.

4. **Formation of the Product**:
- The tetrahedral intermediate collapses, leading to the elimination of the chloride ion (Cl-) and the formation of a double bond between the nitrogen and carbon (C=O).
- The product formed is N-phenyl ethanamide, which is commonly known as acetanilide.

5. **Final Product**:
- The final product of the reaction between aniline and acetyl chloride is acetanilide (C6H5NHCOCH3).

### Conclusion:
Thus, the answer to the question is that aniline on reaction with acetyl chloride gives **acetanilide**.

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