scholarly journals Immobilized Ionic Liquid-Catalyzed Synthesis of Pyrano[3,2-b]indole Derivatives

2012 ◽  
Vol 9 (3) ◽  
pp. 1490-1493 ◽  
Author(s):  
Saman Damavandi
Keyword(s):  
Ionic Liquid ◽  
Aromatic Aldehydes ◽  
Indole Derivatives ◽  
Efficient Catalyst ◽  
Supported Ionic Liquid

An ionic liquid-catalyzed synthesis of 2-amino-4,5-dihydro-4-arylpyrano[3,2-b]indole-3-carbonitrile derivatives through a novel three-component condensation of 3-hydroxyindole, aromatic aldehydes and malononitrile in the presence of silica supported ionic liquid of [pmim]HSO4SiO2(silica supported 1-methyl-3-(triethoxysilylpropyl)imidazolium hydrogensulfate) as an efficient catalyst is described.

Morpholinium hydrogen sulfate (MHS) ionic liquid as an efficient catalyst for the synthesis of bio-active multi-substituted imidazoles (MSI) under solvent-free conditions

2017 ◽  
Vol 72 (1) ◽  
pp. 23-33 ◽  
Author(s):  
Adel A. Marzouk ◽  
Antar A. Abdelhamid ◽  
Shaaban K. Mohamed ◽  
Jim Simpson
Keyword(s):  
Ionic Liquid ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Biologically Active ◽  
High Yield ◽  
Hydrogen Sulfate ◽  
Efficient Catalyst ◽  
Solvent Free Conditions ◽  
Very High

AbstractMorpholinium hydrogen sulfate as an ionic liquid was employed as a catalyst for the synthesis of a biologically active series of multi-substituted imidazoles by a four-component reaction involving the combination of benzil with different aromatic aldehydes, ammonium acetate, and 1-amino-2-propanol under solvent-free conditions. The key advantages of this method are shorter reaction times, very high yield, and ease of processing. Furthermore, the resulting products can be purified by a non-chromatographic method and the ionic liquid catalyst is reusable. All of these novel compounds have been fully characterized from spectral data. The X-ray crystal structures of two representative molecules are also detailed.

Supported ionic liquid [Bmim]FeCl4/Am TiO2 as an efficient catalyst for the catalytic oxidative desulfurization of fuels

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43528-43536 ◽  
Author(s):  
Suhang Xun ◽  
Wenshuai Zhu ◽  
Dan Zheng ◽  
Hongping Li ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Oxidative Desulfurization ◽  
Efficient Catalyst ◽  
Supported Ionic Liquid ◽  
System P ◽  
Catalytic Oxidative Desulfurization ◽  
Desulfurization Efficiency

Supported ionic liquid catalyst [Bmim]FeCl4/Am TiO2 was synthesized and showed excellent desulfurization efficiency and reuseable performance in the ECODS system.

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