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Which catalyst is used in the Rosenmund reduction?
APalladium on barium sulphate
BRaney nickel with hydrogen
CPlatinum on charcoal
DZinc amalgam with HCl
Answer & Solution
Correct answer: A. Palladium on barium sulphate
The Rosenmund reduction poisons palladium with barium sulphate so that hydrogenation stops at the aldehyde instead of going on to the alcohol.
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