One-pot three-component synthesis of tetrahydrobenzo[b]pyrans catalyzed by cost-effective ionic liquid in aqueous medium  

经济高效的水相离子液体催化三组分一锅法合成四氢苯并[b]吡喃（英文）

作　　者：杨健国 刘硕 胡华南 任世斌 应安国 

机构地区：[1]School of Pharmaceutical and Chemical Engineering,Taizhou University [2]College of Chemistry,Nankai University

出　　处：《Chinese Journal of Chemical Engineering》2015年第8期1416-1420,共5页中国化学工程学报（英文版）

基　　金：Supported by the Zhejiang Provincial Natural Science Foundation of China(LY15B060002);the National Natural Science Foundation of China(21106090,21272169,21471110);the National Undergraduate Programs for Innovation and Entrepreneurship(201410350018)

摘　　要：A simple and ef ficient method is proposed for the synthesis of tetrahydrobenzo[b]pyrans with aromatic aldehydes, active methylene compounds, and dimedone using basic ionic liquid catalyst in water. The procedure offers several advantages including short reaction time, good yield, easy procedure, and good recyclability of catalysts, which may be a practical alternative to conventional processes for preparation of 4-hpyrans.A simple and ef ficient method is proposed for the synthesis of tetrahydrobenzo[b]pyrans with aromatic aldehydes, active methylene compounds, and dimedone using basic ionic liquid catalyst in water. The procedure offers several advantages including short reaction time, good yield, easy procedure, and good recyclability of catalysts, which may be a practical alternative to conventional processes for preparation of 4-hpyrans.

关 键 词：Tetrahydrobenzo[b]pyrans Ionic liquid Recyclability 

分 类 号：O626.11[理学—有机化学]