Oxidative cyclization of amidoximes and thiohydroximic acids: A facile and efficient strategy for accessing 3,5-disubstituted 1,2,4-oxadiazoles and 1,4,2-oxathiazoles
作者:Jatin J. Lade、Bhausaheb N. Patil、Kamlesh S. Vadagaonkar、Atul C. Chaskar
DOI:10.1016/j.tetlet.2017.04.045
日期:2017.5
A facile and practical protocol has been developed for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles and 1,4,2-oxathiazoles through oxidative cyclization of amidoximes and thiohydroximic acids, respectively at room temperature. Use of mild reaction conditions, inexpensive reagents, broad substrate scope and good to excellent yield of the products are the salient features of this protocol.
已经开发了一种简便实用的方案,分别通过室温下mid胺肟和硫代氢肟酸的氧化环化反应来合成3,5-二取代的1,2,4-恶二唑和1,4,2-恶二唑。使用温和的反应条件,廉价的试剂,广泛的底物范围以及良好至优异的产物收率是该方案的主要特征。