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NEETChemistryAldehydes and Ketones

What is the major product formed when butanoyl chloride undergoes hydrogenation in the presence of palladium supported on barium sulfate?

Options

  1. AButan-1-ol
  2. BButanoic acid
  3. CButanal
  4. DButanone

Correct answer

C. Butanal

Step-by-step solution

The reaction of an acyl chloride with hydrogen gas in the presence of palladium supported on barium sulfate (Pd-BaSO4) is known as the Rosenmund reduction. In this reaction, the acyl chloride is reduced to the corresponding aldehyde. Barium sulfate acts as a catalytic poison, preventing further reduction of the aldehyde to an alcohol. Therefore, butanoyl chloride is reduced to butanal. Answer: Butanal

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