MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryAldehydes and ketonesPhysical and chemical properties of Aldehydes &Ketones

Catalyst used in Rosenmund reduction is

A.Pd/BaSO4✓ Correct

B.Zn-Hg couple

C.LiAlH4

D.Ni/H2

Explanation

The Rosenmund reaction is a hydrogenation process where molecular hydrogen reacts with acyl chloride in the presence of palladium/barium sulfate catalyst. Barium sulfate reduces the activity of palladium due to its low surface area, thereby preventing over reduction. 푅−퐶푂−퐶푙 퐻2+푃푑−퐵푎푆푂4 → 푅−퐶퐻푂

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