In Rosenmund reduction, the compound reduced is

Options

A. alkyl cyanide
B. amide
C. aldehyde
D. acid chloride

Answer

**Step-by-Step Solution:**

1. **Understanding Rosenmund Reduction**:
- Rosenmund reduction is a chemical reaction that involves the reduction of an acid chloride to an aldehyde.

2. **Identifying the Reactants**:
- The primary reactant in this reduction process is an acid chloride. Acid chlorides are compounds that contain a carbonyl group (C=O) and a chlorine atom (Cl) attached to the same carbon atom.

3. **Catalyst and Conditions**:
- The reaction typically uses palladium (Pd) as a catalyst, which is often poisoned with sulfur (S) to prevent further reduction to alcohols. The solvent used in this reaction is usually xylene.

4. **The Reaction Process**:
- When the acid chloride is treated with hydrogen gas (H2) in the presence of the palladium catalyst (poisoned with sulfur), the acid chloride is reduced to an aldehyde.

5. **Final Product**:
- The final product of the Rosenmund reduction is an aldehyde, which is formed by the reduction of the acid chloride.

6. **Conclusion**:
- Therefore, in the Rosenmund reduction, the compound that is reduced is the acid chloride, and it is converted into an aldehyde.

**Answer**: The compound reduced in Rosenmund reduction is an acid chloride, which is converted to an aldehyde.

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