Bronsted acidic ionic liquids of aza-crown ether complex cations: preparation and applications in organic reactions

被引：21
|
作者：
Cheng, Chen [1 ]
Jing, Huanwang [1 ]
机构：
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 65期
基金：
中国国家自然科学基金;
关键词：
MANNICH-TYPE REACTION; ONE-POT SYNTHESIS; BIGINELLI REACTION; RECYCLABLE CATALYST; TEMPERATURE; SOLVENT; DERIVATIVES; ALDEHYDES; STRATEGY; AMINES;
D O I：
10.1039/c4ra03061c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of novel Bronsted acidic ionic liquids composed of an aza-crown ether chelated potassium cation and various anions, were designed, synthesized and characterised by FTIR, NMR and mass spectrometry, thermogravimetric differential thermal analysis (TG-DTA) and elemental analysis. These new Bronsted acidic ionic liquids of aza-crown ether complex cations (aCBAILs) were applied as catalysts to the Biginelli reaction, Mannich reaction and synthesis of bis-(4-hydroxycoumarin-3-yl)methanes. These organic reactions were achieved in good yields under mild reaction conditions. Moreover, these new IL catalysts can be recycled several times.
引用
收藏
页码：34325 / 34331
页数：7
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