A new green approach for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives using task specific acidic ionic liquid [NMP]H2PO4
作者:Harjinder Singh、Sudesh Kumari、Jitender M. Khurana
DOI:10.1016/j.cclet.2014.05.014
日期:2014.10
involving multicomponent condensation reactions of substituted aromatic aldehydes with 2,7-dihydroxynaphthalene/2-naphthols/2,6-dihydroxynaphthlene and cyclic 1,3-dicarbonyl compounds in task specific acidic ionic liquid [NMP]H 2 PO 4 at 80 °C. This protocol has proved to be efficient in terms of good yields, operational simplicity, easy workup, recyclability of reaction medium/catalyst, and short reaction
摘要通过一种方便,环境友好的方法合成了12-芳基8,9,10,12-四氢苯并[a] x吨-11-酮衍生物,该过程涉及取代的芳族醛与2,7-二羟基萘/ 2-萘的多组分缩合反应。任务特定的酸性离子液体[NMP] H 2 PO 4在80°C下的/ 2,6-二羟基萘和环状1,3-二羰基化合物。已经证明该方案在高产率,操作简单,易于后处理,反应介质/催化剂的可回收性以及较短的反应时间方面是有效的。