SYNTHESIS OF 2,5-DISUBSTITUTED 1,3,4-OXADIAZOLES USING DRY MEDIA
作者:M. Kidwai、R. Mohan
DOI:10.1080/00304940309355855
日期:2003.8
in dry media under microwave irradiation. 1,3,4-Oxadiazoles have long been prepared from dihydrazides using various reagents such as thionyl chloride7, phosphorus pentoxide8 and phosphorus oxy~hloride;~ other methods that effect the reaction require heat and the use of acidic reagents.'O The present communication reports the synthesis of 2,5-disubstituted 1,3,4-0xadiazole from acids and hydrazine hydrate