Abstract
Although the reactions of ketenes and three-membered heterocycles containing one hetero atom are well known,1,2 only one investigation of similar recations with three-membered rings containing two hetero atoms has been reported.3 The reaction of 2-ethyl-3-phenyloxaziridine with diphenylketene was found to afford among other minor products an oxazolidinone derivative (1) and benzaldehyde in yields of 38% and 50% respectively.