A novel sulfur‐promoted cyclization of hydrazides and isonitriles to produce 1,3,4‐oxadiazole has been developed. The method is operationally simple and compatible with a wide scope of substrates and various 2‐amino‐ 1,3,4‐oxadiazoles are efficiently obtained in good yields.
Tetrazoles: LV. Perparation of 2-anilino-5-aryl(hetaryl)-1,3,4-oxadiazoles from 5-substituted tetrazoles under microwave activation
作者:Yu. A. Efimova、G. G. Karabanovich、T. V. Artamonova、G. I. Koldobskii
DOI:10.1134/s1070428009080211
日期:2009.8
In reaction of 5-aryl(hetaryl)tetrazoles with phenyl isocyanate under the conditions of microwave activation the corresponding 2-anilino-5-aryl(hetaryl)-1,3,4-oxadiazoles formed in high yields. The application of the microwave activation fourfold reduced the reaction time.
Cyclodesulfurization of Substituted Thiosemicarbazides into 1,3,4-Oxadiazoles via Hydrazonoyl Chlorides
作者:Hatem A. Abdel-Aziz、Mashooq A. Bhat、Mohamed Ghazzali
DOI:10.1080/10426507.2013.858252
日期:2014.9.2
WIENIAWSKI, W., BIUL. INF. INST. LEK., 1983, 30, N 1-2, 179-186