摘要
An efficient and high-yielding protocol for the preparation of alpha-keto-1,3,4-oxadiazoles has been developed. Formation of alpha-keto-1,3,4-oxadiazoles involves the 2-iodoxybenzoic acid/tetraethylammonium bromide mediated oxidative cyclization of hydrazide-hydrazones generated in situ from the reaction of aryl glyoxal and hydrazides. This one-pot protocol is reasonably general for the preparation of alpha-keto-1,3,4-oxadiazoles under mild conditions in short reaction times.
- 出版日期2014-5-16