BrØnsted Reusable Acidic Ionic Liquids Catalyzed Biginelli Reaction under Solvent-Free Conditions

2013 ◽  
Vol 188 (8) ◽  
pp. 1064-1070 ◽  
Author(s):  
Hamid Reza Shaterian ◽  
Morteza Aghakhanizadeh
2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Leqin He

A series of halogen-free quaternary ammonium Brønsted acidic ionic liquids (ILs) were prepared and used for Biginelli reaction among aromatic aldehydes, urea or thiourea and β-dicarbonyl compounds. The influencing factors, such as the type and amount of catalyst, solvent, reaction time and reaction temperature, were investigated. The results demonstrated that the 3-(N,N-dimethylhexadecylammonium) propanesulfonic acid toluene sulfate ([DHPA][Tos]) provide the best catalytic activity, with good catalytic performance and reusability under solvent-free conditions. A possible mechanism that accounted for the [DHPA][Tos]-catalyzed reaction was proposed.


2009 ◽  
Vol 39 (19) ◽  
pp. 3436-3443 ◽  
Author(s):  
Jianzhou Gui ◽  
Dan Liu ◽  
Chan Wang ◽  
Feng Lu ◽  
Jingzhao Lian ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document