Highly Efficient Brønsted Acidic Ionic Liquid Promoted Direct Diazenylation of Pyrazolones with Aryltriazenes under Mild Conditions

2016 ◽  
Vol 6 (1) ◽  
pp. 102-107 ◽  
Author(s):  
Yonghong Zhang ◽  
Haiyan Hu ◽  
Chen-Jiang Liu ◽  
Dawei Cao ◽  
Bin Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mild Conditions ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid

Application of a multi-SO3H Brønsted acidic ionic liquid in water: a highly efficient and reusable catalyst for the regioselective and scaled-up synthesis of pyrazoles under mild conditions

RSC Advances ◽  
2012 ◽  
Vol 2 (13) ◽  
pp. 5610 ◽  
Author(s):  
Shirin Safaei ◽  
Iraj Mohammadpoor-Baltork ◽  
Ahmad Reza Khosropour ◽  
Majid Moghadam ◽  
Shahram Tangestaninejad ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Reusable Catalyst ◽  
Mild Conditions ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid

Brønsted acidic ionic liquid-catalyzed dehydrative formation of isosorbide from sorbitol: introduction of a continuous process

2017 ◽  
Vol 7 (10) ◽  
pp. 2065-2073 ◽  
Author(s):  
Jie Deng ◽  
Bao-Hua Xu ◽  
Yao-Feng Wang ◽  
Xian-En Mo ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Continuous Process ◽  
Efficient Synthesis ◽  
Acidic Ionic Liquid ◽  
Highly Efficient ◽  
Brønsted Acidic Ionic Liquid ◽  
Acidic Ionic Liquids ◽  
First Time

A highly efficient synthesis of isosorbide from sorbitol was developed using Brønsted acidic ionic liquids (BILs) as the catalyst for the first time.

Efficient pseudo five-component synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives promoted by a novel ionic liquid catalyst

2018 ◽  
Vol 73 (3-4) ◽  
pp. 191-195 ◽  
Author(s):  
Zahra Abshirini ◽  
Abdolkarim Zare
Keyword(s):  
Ionic Liquid ◽  
Disulfonic Acid ◽  
Thermal Gravimetric ◽  
One Pot ◽  
Mild Conditions ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
The One ◽  
C Nmr

AbstractIn this research, initial production and characterization of a novel Brønsted-acidic ionic liquid, namely,N,N,N′,N′-tetramethylethylenediaminium-N,N′-disulfonic acid hydrogen sulfate ([TMEDSA][HSO4]2), has been described (characterization was achieved using Fourier-transform infrared spectroscopy,1H nuclear magnetic resonance (NMR),13C NMR, and mass and thermal gravimetric spectra). Thereafter, utilization of [TMEDSA][HSO4]2as a highly effectual catalyst for the synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives through the one-pot pseudo five-component reaction of phenylhydrazine (2 eq.) with ethyl acetoacetate (2 eq.) and arylaldehydes (1 eq.) in relatively mild conditions, has been reported.

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