Water-mediated, green, and efficient synthesis of bisquinolones under catalyst-free conditions
作者:Bandi Madhu、Ch. Venkata Ramana Reddy、Pramod Kumar Dubey
DOI:10.1080/00397911.2016.1264602
日期:2017.3.4
ABSTRACT Water-mediated, green, and efficient synthesis involving condensation of 4-hydroxy-1-methylquinoline-2(1H)-one (3) with different aromatic and heterocyclic aldehydes (4a–n) leading to 3,3′-(arylmethylene)-bis-(4-hydroxy-1-methylquinolin-2(1H)-one) 5(a–n) under catalyst-free conditions is described. This reaction has an easy workup without using column chromatography and provides excellent
摘要 水介导的绿色高效合成,包括 4-羟基-1-甲基喹啉-2(1H)-one (3) 与不同的芳香族和杂环醛 (4a-n) 缩合生成 3,3'-(芳基亚甲基) )-bis-(4-hydroxy-1-methylquinolin-2(1H)-one) 5(a-n) 在无催化剂条件下进行了描述。该反应无需使用柱色谱即可轻松完成,并在更短的反应时间内提供出色的产物收率。它不需要任何催化剂,以水为介质,是最环保的溶剂。本工作所需的 3 本身是通过 N-甲基苯胺 (1) 与丙二酸 (2) 在 POCl3 存在下使用先前报道的程序缩合获得的。图形概要