Which of the following reactions give benzophenone

Options

A. `2C_(6)H_(6)+C CI_(4) overset((i)AICI_(3))underset((ii)H_(2)O)rarr`
B. `C_(6)H_(6)+C_(6)H_(5)COCI overset(AICI_(3))rarr`
C. `o-CH_(3)C_(6)H_(4)COC_(6)H_(5) overset("heat")rarr`
D. `o-HOOC-C_(6)H_(4)-COC_(6)H_(5) overset(Cu)underset(260^(@)C)rarr`

Explanation

To determine which of the given reactions yield benzophenone, we need to analyze each option step by step.

### Step-by-Step Solution:

1. **Identify Benzophenone**:
Benzophenone is represented by the formula C6H5C(=O)C6H5, which consists of two phenyl groups (C6H5) attached to a carbonyl group (C=O).

2. **Evaluate Option 1**:
The reaction involves benzene (C6H6) with CCl4 and AlCl3 followed by hydrolysis.
- In this reaction, CCl4 acts as a source of the electrophile (CCl3+).
- The CCl3+ carbocation can react with benzene to form a chlorinated benzene derivative.
- Upon hydrolysis, this chlorinated compound can be converted into benzophenone through the elimination of HCl and the introduction of a carbonyl group.

**Conclusion for Option 1**: Benzophenone is formed.

3. **Evaluate Option 2**:
The reaction involves benzene (C6H6) with COCl2 (phosgene) and AlCl3.
- This is a Friedel-Crafts acylation reaction.
- The AlCl3 catalyst activates the COCl2, generating the acylium ion (C6H5C(=O)+).
- The acylium ion can then react with benzene to form benzophenone.

**Conclusion for Option 2**: Benzophenone is formed.

4. **Evaluate Option 3**:
The reaction involves ortho-substituted phenyl ketone with a methyl group (C6H4(CO)C6H5).
- This structure indicates that there is a methyl group ortho to the carbonyl group.
- Heating this compound does not lead to the formation of benzophenone, as the presence of the methyl group prevents the necessary rearrangement or elimination to yield benzophenone.

**Conclusion for Option 3**: Benzophenone is NOT formed.

5. **Final Conclusion**:
Benzophenone is formed in options 1 and 2, but not in option 3.

### Summary of Results:
- **Option 1**: Benzophenone is formed.
- **Option 2**: Benzophenone is formed.
- **Option 3**: Benzophenone is NOT formed.