酸性离子液体[BPy]HSO_4和[BMMIm]HSO_4催化合成查尔酮反应机理探讨  

Discussion on Synthesis and Reaction Mechanism of Chalcone Catalyzed by Acidic Ionic Liquids[BPy]HSO_4 and[BMMIm]HSO_4

作　　者：杜玉英[1] 韩利民[1] 李永栋[1] 竺宁[1] 张桂峰[1] 

机构地区：[1]内蒙古工业大学化工学院,呼和浩特010051

出　　处：《内蒙古大学学报（自然科学版）》2012年第5期477-480,共4页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自然科学基金资助项目(2010MS0211);内蒙古工业大学基金(X200812)

摘　　要：离子液体作为绿色的溶剂和催化剂具有很多独特的性质,特别是离子液体的可设计性,使其具有酸性可调的特点.分别以酸性离子液体[BPy]HSO4和[BMMIm]HSO4为催化剂,在无溶剂条件下考察了两种离子液体对Claisen-Schmidt缩合的不同催化效果,探讨了两种离子液体在查尔酮合成中可能的催化机理.Ionic liquids(ILs)as green solvents and catalysts have unique properties such as a broad liquid range,good solvating ability,high thermal stability,and negligible vapor pressure,especially designability of ILs,which makes the acidity of ILs can be adjustable.[BPy]HSO4 and[BMMIm]HSO4 acidic ILs catalyzing Claisen-Schmidt(CS) condensation of acetophenone with benzaldehyde were investigated under solvent-free conditions.The plausible mechanism was elucidated for the synthesis of chalcone using the two ILs as Brnsted acid catalysts.

关 键 词：离子液体 查尔酮 Claisen-Schmidt缩合 催化机理 

分 类 号：O621.3[理学—有机化学]