Which one of the products of the following reactions does not react with Hinsberg reagent to form sulphonamide

Options

A.
B.
C.
D.

Answer

To solve the question, "Which one of the products of the following reactions does not react with Hinsberg reagent to form sulfonamide?", we will analyze the reactions and the nature of the products formed.

### Step-by-Step Solution:

1. **Understanding Hinsberg Reagent**:
- The Hinsberg reagent is benzene sulfonyl chloride (C6H5SO2Cl). It is used to differentiate between primary, secondary, and tertiary amines.
- Primary and secondary amines react with Hinsberg reagent to form sulfonamides, while tertiary amines do not react.

2. **Identifying the Products**:
- We need to analyze the products formed from the given reactions. The problem states that we have several reactions, and we need to determine which product does not react with the Hinsberg reagent.

3. **Analyzing Each Reaction**:
- **Reaction A**: Sodium amalgam in the presence of ethanol reduces a compound to a primary amine.
- **Conclusion**: This product is a primary amine and will react with Hinsberg reagent.

- **Reaction B**: The reaction involves the use of Cl2 and HCl, which leads to the formation of an imine from a nitrile (CN).
- **Conclusion**: Imine does not react with Hinsberg reagent, as it is not an amine.

- **Reaction C**: Involves lithium aluminum hydride (LiAlH4), which reduces a compound to a primary amine.
- **Conclusion**: This product is also a primary amine and will react with Hinsberg reagent.

- **Reaction D**: Similar to Reaction C, this will also yield a primary amine.
- **Conclusion**: This product will react with Hinsberg reagent as well.

4. **Final Conclusion**:
- Among the products analyzed, the product formed in Reaction B (the imine) does not react with the Hinsberg reagent to form sulfonamide. Therefore, the correct answer is **Option B**.