title: Studies related to penicillins and cephalosporins. 3. Oxidative rearrangement of a 4-mercaptoazetidin-2-one to a delta4-isothiazolin-3-one.
mesh_terms: D002511:Cephalosporins / Q000138:chemical synthesis*; D007769:Lactams / Q000138:chemical synthesis; D008722:Methods; D010084:Oxidation-Reduction; D010406:Penicillins / Q000138:chemical synthesis*; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis
chemical_list: D002511:Cephalosporins; D007769:Lactams; D010406:Penicillins; D013438:Sulfhydryl Compounds