TiCl<sub>4</sub> mediated facile synthesis of 1,3,4-oxadiazoles and 1,3,4-thiadiazoles
作者:Lin Zhang、Yu Yu、Qiang Tang、Jianyong Yuan、Dongzhi Ran、Binghua Tian、Tao Pan、Zongjie Gan
DOI:10.1080/00397911.2019.1700521
日期:2020.2.1
Abstract An efficient method for the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles has been developed. Various hydrazides or thionyl hydrazides readily react with DMA derivatives in the presence of TiCl4 as a catalyst to afford the desired products. This protocol provides a simple and economical procedure that affords the target products with good yields and wide substrate
摘要 开发了一种合成2,5-二取代1,3,4-恶二唑和1,3,4-噻二唑的有效方法。在作为催化剂的 TiCl4 存在下,各种酰肼或亚硫酰酰肼很容易与 DMA 衍生物反应,得到所需的产物。该协议提供了一种简单且经济的程序,可提供具有良好产量和广泛底物范围的目标产品。图形概要