Chemoselective Aerobic Oxidation of Penicillin and Cephalosporin Derivatives into Sulfoxides

Tanaka, H.; Kikuchi, R.; Torii, S. Tetrahedron 1996, 52, 2343.

Aerobic oxidation of penicillin and cephalosporin derivatives in the presence of cobalt(III) acetylacetonate and an aldehyde under oxygen atmosphere took place in a chemoselective manner to afford the corresponding sulfoxides, exclusively.