Which among the following compounds will give Wurtz reaction ?

Options

A. `CH_(2)=CH-Br`
B. `C_(6)H_(5)-Br`
C. `CH_(2)=CH-CH_(2)-Br`
D. `HC-=C-Br`

Answer

To determine which compound will undergo the Wurtz reaction, we need to understand the conditions and requirements for this reaction. The Wurtz reaction is a coupling reaction that typically occurs with alkyl halides in the presence of sodium metal. Here’s a step-by-step solution:

### Step 1: Identify the Wurtz Reaction
The Wurtz reaction involves the reaction of alkyl halides (R-X) with sodium (Na) to form alkanes (R-R) and sodium halide (NaX). The general reaction can be represented as:
\[ 2 R-X + 2 Na \rightarrow R-R + 2 NaX \]

### Step 2: Analyze the Given Compounds
We need to evaluate each compound to see if it is an alkyl halide. Alkyl halides are compounds where a halogen (like Br, Cl, I) is bonded to an alkyl group (a carbon chain).

1. **C6H5Br (Bromobenzene)**: This is an aryl halide (not an alkyl halide) and will not undergo the Wurtz reaction.
2. **CH2Br-CH2-CH2Br (1,3-Dibromopropane)**: This is an alkyl halide and can undergo the Wurtz reaction.
3. **CH3-CH=CH2 (Propene)**: This is an alkene and does not have the halide necessary for the Wurtz reaction.
4. **CH≡C-CH2Br (Propyne)**: This is an alkyne and has a halide, but the presence of a triple bond complicates the reaction.

### Step 3: Determine Which Compound Can Undergo the Wurtz Reaction
From the analysis:
- **C6H5Br**: Not applicable (aryl halide).
- **CH2Br-CH2-CH2Br**: This compound can undergo the Wurtz reaction.
- **CH3-CH=CH2**: Not applicable (alkene).
- **CH≡C-CH2Br**: While it has a halide, the triple bond may not favor the Wurtz reaction.

### Conclusion
The compound that will give the Wurtz reaction is **CH2Br-CH2-CH2Br (1,3-Dibromopropane)**.