Introducing Deep Eutectic Solvents to Polar Organometallic Chemistry: Chemoselective Addition of Organolithium and Grignard Reagents to Ketones in Air
作者:Cristian Vidal、Joaquín García-Álvarez、Alberto Hernán-Gómez、Alan R. Kennedy、Eva Hevia
DOI:10.1002/anie.201400889
日期:2014.6.2
Despite their enormous synthetic relevance, the use of polar organolithium and Grignard reagents is greatly limited by their requirements of low temperatures in order to control their reactivity as well as the need of dry organic solvents and inert atmosphere protocols to avoid their fast decomposition. Breaking new ground on the applications of these commodity organometallics in synthesis under more
尽管它们具有巨大的合成相关性,但是极性有机锂和格氏试剂的使用受到其对低温的要求的极大限制,以控制它们的反应性,以及需要干燥的有机溶剂和惰性气氛来避免它们快速分解。这些商品有机金属在更环保的条件下在合成中的应用开辟了新天地,这项工作引入了深层溶剂(DES)作为绿色替代介质,可在室温下在空气中对酮进行化学选择性加成。将它们在DES中的反应性与在纯水中观察到的反应性进行比较,表明烷基化试剂正在发生动态活化,与亲和水解相比,亲核加成更有利,