Oxidative cyclization of N-aroylhydrazones to 2-(2-arylethenyl)-1,3,4-oxadiazoles using DDQ as an efficient oxidant
作者:Karolina Jasiak、Agnieszka Kudelko
DOI:10.1016/j.tetlet.2015.09.018
日期:2015.10
A series of novel 5-aryl-2-(2-arylethenyl)-1,3,4-oxadiazoles were synthesized by the 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ) promoted oxidativecyclization of N′-(arylmethylidene)-3-arylacrylohydrazides. A facile and efficient one-pot protocol using the starting 3-arylacrylohydrazides and aromatic aldehydes is also reported. Short reaction times, high yields, a simple work-up procedure and the possibility