Which of the following is not an example of Wurtz-Fittig reaction?

Options

A. `C_(6)H_(5)CH_(2)Cl+CH_(3)Cl overset("Na/ether")to`
B. `C_(6)H_(5)CH_(2)Cl+C_(6)H_(5)Cl overset("Na/ether")to`
C. `C_(6)H_(5)Cl+CH_(3)Cl overset("Na/ether")to`
D. None of the above

Answer

To determine which of the following is not an example of a Wurtz-Fittig reaction, we first need to understand what a Wurtz-Fittig reaction is and the conditions under which it occurs.

### Step-by-Step Solution:

1. **Understanding Wurtz-Fittig Reaction**:
- The Wurtz-Fittig reaction involves the coupling of an alkyl halide (R-X) or aryl halide (Ar-X) with sodium metal (Na) in the presence of dry ether.
- The general reaction can be represented as:
\[ 2 R-X + 2 Na \rightarrow R-R + 2 NaX \]
- This results in the formation of a new carbon-carbon bond between the alkyl or aryl groups.

2. **Identifying the Reactants**:
- The reactants in a Wurtz-Fittig reaction can be either alkyl halides or aryl halides.
- The presence of sodium is crucial as it facilitates the coupling of the halides.

3. **Analyzing the Given Options**:
- We need to evaluate the options provided in the question to identify which one does not fit the criteria of a Wurtz-Fittig reaction.
- Look for options that either do not involve sodium or do not involve the coupling of alkyl or aryl halides.

4. **Determining the Correct Answer**:
- After analyzing the options, it becomes clear that if an option involves a reaction that does not include sodium or does not involve the coupling of the specified halides, it is not an example of a Wurtz-Fittig reaction.
- For instance, if an option describes a reaction involving only alkyl halides without sodium or a different type of reaction mechanism, then that option would be the answer.

5. **Conclusion**:
- Based on the analysis, the option that does not represent a Wurtz-Fittig reaction is identified as the correct answer.