The Rosenmund reduction is a chemical reaction that involves the reduction of acid chlorides to aldehydes. There are several synonyms for this reaction, including the Rosenmund reaction, the Rosenmund-von Braun reaction, and the Rosenmund-von Braun synthesis. Other terms that can be used to describe this reduction include the catalytic hydrogenation of acid chlorides, the hydrogenation of acyl chlorides, and the reduction of acyl halides. The Rosenmund reduction is a common technique used in the synthesis of aldehydes, and is often utilized in the fields of pharmaceuticals, fine chemicals, and materials science. Various catalysts and reaction conditions can be used to fine-tune the selectivity and efficiency of this reaction.