MP Board · Class 12 · Chemistry · Aldehydes, Ketones and Carboxylic AcidsWhat is Rosenmund reduction?

Rosenmund reduction is a catalytic hydrogenation chemical reaction in which an acyl chloride is selectively reduced to an aldehyde using hydrogen gas over a palladium catalyst poisoned with barium sulfate. The barium sulfate deactivates the catalyst partially to prevent further reduction of the formed aldehyde into a primary alcohol. This method is extensively utilized in organic chemistry for preparing aldehydes from acid chlorides efficiently without forming unwanted byproducts.