Synthesis of 1,3,4-oxadiazoles from 1,2-diacylhydrazines using [Et<sub>2</sub>NSF<sub>2</sub>]BF<sub>4</sub>as a practical cyclodehydration agent
作者:Marie-France Pouliot、Laetitia Angers、Jean-Denys Hamel、Jean-François Paquin
DOI:10.1039/c1ob06512b
日期:——
The preparation of 1,3,4-oxadiazoles from 1,2-diacylhydrazines using XtalFluor-E ([Et2NSF2]BF4) as cyclodehydration reagent is described. Various functionalized 1,3,4-oxadiazoles were synthesized and it was found that the use of acetic acid as an additive generally improved the yields.
报道了使用XtalFluor-E([Et2NSF2]BF4)作为环脱水剂,从1,2-二酰基肼制备1,3,4-噁二唑的方法。合成了多种功能化的1,3,4-噁二唑,并发现使用乙酸作为添加剂通常能提高产率。