Benzene reacts with `CH_(3)COCl` in the presence of anhy `AlCl_(3)` to give

Options

A. `C_(6)H_(5)Cl`
B. `C_(6)H_(5)COCl`
C. `C_(6)H_(5)CH_(3)`
D. `C_(6)H_(5)COCH_(3)`

Answer

To solve the question of what product is formed when benzene reacts with CH3COCl in the presence of anhydrous AlCl3, we can follow these steps:

### Step 1: Identify the Reactants
We have benzene (C6H6) and acetyl chloride (CH3COCl) as our reactants. Anhydrous aluminum chloride (AlCl3) is used as a catalyst.

### Step 2: Understand the Role of AlCl3
AlCl3 is a strong Lewis acid and will react with acetyl chloride to form a more reactive electrophile. In this case, it will coordinate with the chlorine atom in CH3COCl, facilitating the generation of the acylium ion (CH3C^+=O).

### Step 3: Formation of the Electrophile
The reaction of AlCl3 with CH3COCl leads to the formation of the acylium ion:
\[ \text{CH}_3\text{CO}^+ \text{(C=O)} \]
This acylium ion is a potent electrophile that can react with the electron-rich benzene ring.

### Step 4: Electrophilic Aromatic Substitution
The benzene ring will undergo electrophilic aromatic substitution with the acylium ion. The π electrons of the benzene will attack the acylium ion, leading to the formation of a new carbon-carbon bond and resulting in the formation of a ketone.

### Step 5: Product Formation
After the electrophilic attack, the product formed is acetophenone (C6H5COCH3). The reaction can be summarized as:
\[ \text{C}_6\text{H}_6 + \text{CH}_3\text{COCl} \xrightarrow{\text{AlCl}_3} \text{C}_6\text{H}_5\text{COCH}_3 + \text{HCl} \]

### Final Product
The final product of the reaction is acetophenone (C6H5COCH3).

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