A Mild and Efficient Synthesis of 5-Oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran Derivatives in Room Temperature Ionic Liquids  

作　　者：蒋兆芹 纪顺俊 陆军 杨锦明 

机构地区：[1]Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering of Suzhou University, Suzhou, Jiangsu 215006, China [2]Department of Chemistry, Yancheng Teacher's College, Yancheng, Jiangsu 224002, China

出　　处：《Chinese Journal of Chemistry》2005年第8期1085-1089,共5页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Nos. 20172039, 20472062） and Jiangsu Provincial Key Laboratory of Fine Petrochemical Technology （No. KF0402）.

摘　　要：A one-pot synthesis of a series of 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives via three-component coupling reactions of aldehydes, dimedone and malononitrilein room temperature ionic liquids （RTILs） without any catalyst has been reported. In the meantime, the reuse of ionic liquids and the effect of different ionic liquids as solvent on the reaction have also been investigated.A one-pot synthesis of a series of 5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran derivatives via three-component coupling reactions of aldehydes, dimedone and malononitrilein room temperature ionic liquids （RTILs） without any catalyst has been reported. In the meantime, the reuse of ionic liquids and the effect of different ionic liquids as solvent on the reaction have also been investigated.

关 键 词：one-pot synthesis 4H-benzopyran derivative ionic liquid 

分 类 号：O626.3[理学—有机化学]