Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?

Options

A. `LiAIH_(4)` in ether
B. Fe and HCl
C. `H_(2)`/Pt
D. Sn and HCl

Answer

To determine which reagent would not be a good choice for reducing an aryl nitro compound to an amine, we will analyze each of the given options:

### Step-by-Step Solution:

1. **Understanding the Reduction of Aryl Nitro Compounds**:
- Aryl nitro compounds (like nitrobenzene) can be reduced to aryl amines (like aniline) using various reducing agents.

2. **Analyzing the Options**:
- **Option A: Lithium Aluminum Hydride (LiAlH4) in Ether**:
- LiAlH4 is a strong reducing agent, but it is known to reduce nitro compounds to azo compounds (C6H5-N=N-C6H5) rather than directly to amines. Therefore, this is not a suitable choice for the reduction to an amine.

- **Option B: Iron in HCl**:
- Iron in HCl is a common method for reducing nitro compounds to amines. It effectively reduces aryl nitro compounds to aryl amines.

- **Option C: H2 in Platinum**:
- Hydrogen gas in the presence of a platinum catalyst is also effective in reducing nitro groups to amines.

- **Option D: Tin in HCl**:
- Tin (Sn) in the presence of hydrochloric acid (HCl) is another effective reducing agent for converting nitro groups to amines.

3. **Conclusion**:
- Based on the analysis, the reagent that would not be a good choice for reducing an aryl nitro compound to an amine is **Option A: Lithium Aluminum Hydride in Ether**.

### Final Answer:
**The correct answer is Option A: Lithium Aluminum Hydride in Ether.**

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