Aldehydes are formed.
Rosenmund’s reduction reaction is used for the preparation of Aldehydes from acyl chloride or acid chloride. (RCOCl). Acyl chloride or acid chloride on hydrogenation in the presence of catalyst Palladium on Barium Sulfate (BaSO4) yields corresponding aldehydes. This reaction is called Rosenmund’s reduction.
- Barium sulfate has a low surface area which reduces the activity of the palladium, preventing over-reduction.