Synthesis of immobilized Brønsted acidic ionic liquid on silica gel as heterogeneous catalyst for esterification

2011 ◽  
Vol 12 (5) ◽  
pp. 353-356 ◽  
Author(s):  
Jinmei Miao ◽  
Hui Wan ◽  
Guofeng Guan
Keyword(s):  
Ionic Liquid ◽  
Heterogeneous Catalyst ◽  
Silica Gel ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid

MOR zeolite supported Brønsted acidic ionic liquid: an efficient and recyclable heterogeneous catalyst for ketalization

RSC Advances ◽  
2014 ◽  
Vol 4 (24) ◽  
pp. 12160-12167 ◽  
Author(s):  
Zhang-Min Li ◽  
Yan Zhou ◽  
Duan-Jian Tao ◽  
Wei Huang ◽  
Xiang-Shu Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Heterogeneous Catalyst ◽  
Heterogeneous Catalysts ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Recyclable Heterogeneous Catalyst ◽  
Supported Ionic Liquids

In order to widen the application of ionic liquids as efficient and renewable heterogeneous catalysts, supported ionic liquids (SILs) have received considerable attention.

Oxidative Desulfurization of Diesel Fuel Using a Brønsted Acidic Ionic Liquid Supported on Silica Gel

2017 ◽  
Vol 31 (9) ◽  
pp. 10196-10205 ◽  
Author(s):  
Mahdieh Safa ◽  
Babak Mokhtarani ◽  
Hamid Reza Mortaheb ◽  
Kurosh Tabar Heidar ◽  
Ali Sharifi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Silica Gel ◽  
Diesel Fuel ◽  
Oxidative Desulfurization ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid

Ionophore silica-coated magnetite nanoparticles as a recyclable heterogeneous catalyst for one-pot green synthesis of 2,4,5-trisubstituted imidazoles

2016 ◽  
Vol 45 (3) ◽  
pp. 1243-1253 ◽  
Author(s):  
Hossein Naeimi ◽  
Dorsa Aghaseyedkarimi
Keyword(s):  
Ionic Liquid ◽  
Green Synthesis ◽  
Heterogeneous Catalyst ◽  
Magnetite Nanoparticles ◽  
One Pot ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Recyclable Heterogeneous Catalyst

Novel multi-SO3H functionalized strong Brønsted acidic ionic liquid coated magnetite nanoparticles has been prepared and applied as catalyst for the synthesis of 2,4,5-trisubstituted imidazoles.

scholarly journals A Brønsted acidic ionic liquid anchored to magnetite nanoparticles as a novel recoverable heterogeneous catalyst for the Biginelli reaction

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7271-7279
Author(s):  
Hourieh Sadat Oboudatian ◽  
Hossein Naeimi ◽  
Mohsen Moradian
Keyword(s):  
Ionic Liquid ◽  
Heterogeneous Catalyst ◽  
Magnetite Nanoparticles ◽  
Biginelli Reaction ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid

In this study, morpholine sulfate acidic ionic liquid bonded on magnetite nanoparticles (Mag@Morph-AIL) has been used as a catalyst for the preparation of 3,4-dihydropyrimidinones.

1, 1’-Sulfinyldiethylammonium Bis (Hydrogen Sulfate) as a Recyclable Dicationic Ionic Liquid Catalyst for the Efficient Solvent-free Synthesis of 3, 4-Dihydropyrimidin-2(1H)-ones via Biginelli Reaction

2020 ◽  
Vol 23 (2) ◽  
pp. 157-167
Author(s):  
Zainab Ehsani-Nasab ◽  
Ali Ezabadi
Keyword(s):  
Ionic Liquid ◽  
Biginelli Reaction ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Hydrogen Sulfate ◽  
One Pot ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
Solvent Free Conditions ◽  
Dicationic Ionic Liquid

Objective: A facile and efficient method for synthesis of 3, 4-dihydropyrimidin-2(1H)-ones via Biginelli reaction catalyzed by a novel dicationic Brönsted acidic ionic liquid, [(EtNH2)2SO][HSO4]2, has been successfully developed. Material and Method:: 3, 4-Dihydropyrimidin-2(1H)-ones were synthesized through one-pot condensation of aromatic aldehydes, ethyl acetoacetate, and urea under solvent-free conditions using [(EtNH2)2SO][HSO4]2 as a novel catalyst. The progress of the reaction was monitored by thin-layer chromatography (ethyl acetate / n-hexane = 1 / 5). The products have been characterized by IR, 1H NMR, 13C NMR, and also by their melting points. Results: In this research, a library of dihydropyrimidinone derivatives was synthesized via Biginelli reaction under solvent-free conditions at 120oC using [(EtNH2)2SO][HSO4]2 as a catalyst. Various aromatic aldehydes, as well as heteroaromatic aldehydes, were employed, affording good to high yields of the corresponding products and illustrating the substrate generality of the present method. In addition, the prepared dicationic Brönsted acidic ionic liquid can be easily recovered and reused. Conclusion: 1, 1’-Sulfinyldiethylammonium bis (hydrogen sulfate), as a novel dicationic ionic liquid, can act as a highly efficient catalyst for the synthesis of 3, 4-dihydropyrimidin-2(1H)-ones under solvent-free conditions.

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