Microwave promoted one-pot synthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazole derivatives using Al3+-K10 clay as a heterogeneous catalyst
作者:Dhanusu Suresh、Kuppusamy Kanagaraj、Kasi Pitchumani
DOI:10.1016/j.tetlet.2014.05.004
日期:2014.7
An efficient, inexpensive method is developed for the one-pot synthesis of 2-aryl substituted 1,3,4-oxadiazoles and 1,2,4-oxadiazoles starting from acid hydrazides and trimethyl orthoformate under solvent-free, microwave conditions using a reusable Al3+-K10 montmorillonite clay as a heterogeneous catalyst. The novelty of the present study lies in the synthesis of oxadiazole and benzimidazole moieties
开发了一种有效,廉价的方法,可在无溶剂的微波条件下,从酰肼和原甲酸三甲酯开始,一锅法合成2-芳基取代的1,3,4-恶二唑和1,2,4-恶二唑Al 3+ -K10蒙脱土作为非均相催化剂。本研究的新颖之处在于在温和的条件下,由易得的前体和催化剂以一锅法高收率合成恶二唑和苯并咪唑部分。