title: A reaction of chlorosulfonyl isocyanate and 6-tritylaminopenicillanic acid leading to the anhydropenicillin rearrangement.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003485:Cyanates; D010397:Penicillanic Acid; D010406:Penicillins / Q000138:chemical synthesis*; D014320:Triphenylmethyl Compounds
chemical_list: D003485:Cyanates; D010406:Penicillins; D014320:Triphenylmethyl Compounds; D010397:Penicillanic Acid