Question:
When benzoyl chloride is treated with \(H_2\) in the presence of \(Pd-BaSO_4\), benzaldehyde is formed. This reaction is called
When benzoyl chloride is treated with \(H_2\) in the presence of \(Pd-BaSO_4\), benzaldehyde is formed. This reaction is called
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Whenever you see Acid Chloride + \(H_2/Pd-BaSO_4\), identify it immediately as the Rosenmund Reduction.
Updated On: Apr 29, 2026
- Clemmensen reduction
- Wolff-Kischner reduction
- Rosenmund reduction
- Cannizaro reaction
- Williamson reaction
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
The Rosenmund reduction is a catalytic hydrogenation process that specifically reduces acid chlorides to aldehydes.
Step 3: Detailed Explanation:
When an acid chloride (like benzoyl chloride) is hydrogenated in the presence of a palladium catalyst supported on barium sulfate (\(Pd-BaSO_4\)), it yields an aldehyde.
\[ C_6H_5COCl + H_2 \xrightarrow{Pd-BaSO_4} C_6H_5CHO + HCl \]
The catalyst is partially poisoned (usually with sulfur or quinoline) to prevent further reduction of the aldehyde to an alcohol. This specific setup is known as Rosenmund reduction.
Step 4: Final Answer:
The reaction is the Rosenmund reduction.
The Rosenmund reduction is a catalytic hydrogenation process that specifically reduces acid chlorides to aldehydes.
Step 3: Detailed Explanation:
When an acid chloride (like benzoyl chloride) is hydrogenated in the presence of a palladium catalyst supported on barium sulfate (\(Pd-BaSO_4\)), it yields an aldehyde.
\[ C_6H_5COCl + H_2 \xrightarrow{Pd-BaSO_4} C_6H_5CHO + HCl \]
The catalyst is partially poisoned (usually with sulfur or quinoline) to prevent further reduction of the aldehyde to an alcohol. This specific setup is known as Rosenmund reduction.
Step 4: Final Answer:
The reaction is the Rosenmund reduction.
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