One-Pot Synthesis of 3,5-Disubstituted 1,2,4-Oxadiazoles Directly from Nitrile and Hydroxylamine Hydrochloride Under Solvent-Free Conditions Using Potassium Fluoride as Catalyst and Solid Support
作者:Shahnaz Rostamizadeh、Hamid Reza Ghaieni、Reza Aryan、Ali-Mohammad Amani
DOI:10.1080/00397910903370642
日期:2010.9.20
A one-pot synthesis of 3,5-disubstituted 1,2,4-oxadiazoles with two identical substituents directly from the reaction of nitriles and hydroxylamine hydrochloride in the presence of potassium fluoride as catalyst and solid support under solvent-free condition is described. Moreover, the formation of products has been discussed, and a plausible mechanism has been presented. Simplicity of the process
描述了在无溶剂条件下,在氟化钾作为催化剂和固体载体存在下,腈和盐酸羟胺反应直接合成具有两个相同取代基的 3,5-二取代 1,2,4-恶二唑。此外,还讨论了产物的形成,并提出了一个合理的机制。该方法的一些优点是过程简单、在水性介质中后处理和出色的收率。