In Situ Generated Cetyltrimethylammonium Bisulphate in Choline Chloride–Urea Deep Eutectic Solvent: A Novel Catalytic System for One Pot Synthesis of 1,3,4-Oxadiazole
作者:Priyanka Anant More、Balu Laxman Gadilohar、Ganapati Subray Shankarling
DOI:10.1007/s10562-014-1288-3
日期:2014.8
Cetyltrimethylammonium bisulphate ([CTA]HSO4) catalysed one pot synthesis of 2,5-disubstituted-1,3,4-oxadiazoles from carboxylic acid and acid hydrazide in biodegradable deep eutectic solvent is investigated. [CTA]HSO4 is generated in situ from cetyltrimethylammonium peroxodisulphate. Cyclization of diacylhydrazide using [CTA]HSO4 gives best alternative to traditional dehydration agents. Its remarkable
研究了十六烷基三甲基硫酸氢铵 ([CTA]HSO4) 在可生物降解的低共熔溶剂中催化由羧酸和酰肼一锅合成 2,5-二取代-1,3,4-恶二唑。[CTA]HSO4 由十六烷基三甲基过二硫酸铵原位生成。使用 [CTA]HSO4 环化二酰肼是传统脱水剂的最佳替代品。其显着特点包括程序更温和、后处理和纯化简单、产品产率从高到高、使用廉价、可回收的试剂,以及避免使用有毒催化剂/试剂和溶剂的环保方面。图形摘要。