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

页码：34325 / 34331

页数：7

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