Synthesis of dibenzoxanthene and acridine derivatives catalyzed by 1,3-disulfonic acid imidazolium carboxylate ionic liquids

RSC Advances ◽  
2014 ◽  
Vol 4 (78) ◽  
pp. 41287-41291 ◽  
Author(s):  
Arup Kumar Dutta ◽  
Pinky Gogoi ◽  
Ruli Borah
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Solvent Free ◽  
Disulfonic Acid ◽  
Acridine Derivatives ◽  
Solvent Free Conditions

1,3-Disulfonic acid imidazolium carboxylate [DSIM][X] (where X = [CH3COO]−, [CCl3COO]−, [CF3COO]−) ILs were synthesized and their catalytic activity examined for the preparation of 14H-dibenzo[a,j]xanthene and 1,8-dioxo-decahydroacridine derivatives under solvent-free conditions and in water at 80–100 °C.

scholarly journals N-Hydroxyphthalimide Supported on Silica Coated with Ionic Liquids Containing CoCl2 (SCILLs) as New Catalytic System for Solvent-Free Ethylbenzene Oxidation

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 252 ◽  
Author(s):  
Gabriela Dobras ◽  
Kornela Kasperczyk ◽  
Sebastian Jurczyk ◽  
Beata Orlińska
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Fold Increase ◽  
Solvent Free ◽  
High Catalytic Activity ◽  
Ethylbenzene Oxidation ◽  
Solvent Free Conditions ◽  
Ft Ir ◽  
Tga Analysis ◽  
Ft Ir Spectroscopy

N-Hydroxyphthalimide was immobilized via ester bond on commercially available silica gel (SiOCONHPI) and then coated with various ionic liquids containing dissolved CoCl2 (SiOCONHPI@CoCl2@IL). New catalysts were characterized by means of FT IR spectroscopy, elemental analysis, SEM and TGA analysis and used in ethylbenzene oxidation with oxygen under mild solvent-free conditions (80 °C, 0.1 MPa). High catalytic activity of SiOCONHPI was proved. In comparison to a non-catalytic reaction, a two-fold increase in conversion of ethylbenzene was observed (from 4.7% to 8.6%). Coating of SiOCONHPI with [bmim][OcOSO3], [bmim][Cl] and [bmim][CF3SO3] containing CoCl2 enabled to increase the catalytic activity in relation to systems in which IL and CoCl2 were added directly to reaction mixture. The highest conversion of ethylbenzene was obtained while SiOCONHPI@CoCl2@[bmim][OcOSO3] were used (12.1%). Catalysts recovery and reuse was also studied.

Imidazolium-based ionic liquid decorated zinc porphyrin catalyst for converting CO2 into five-membered heterocyclic molecules

2018 ◽  
Vol 2 (1) ◽  
pp. 125-132 ◽  
Author(s):  
Yaju Chen ◽  
Rongchang Luo ◽  
Zhi Yang ◽  
Xiantai Zhou ◽  
Hongbing Ji
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Solvent Free ◽  
Zinc Porphyrin ◽  
Porphyrin Complex ◽  
Heterocyclic Molecules ◽  
Solvent Free Conditions

The bifunctional zinc(ii) porphyrin complex with flexible quaternary imidazole ionic liquids exhibited improved catalytic activity and reusability for the reaction of CO2with epoxides or aziridines to form five-membered heterocyclic products without any additives under solvent-free conditions.

N,N,N′,N′-Tetramethylethylene-diaminium-N,N′-disulfonic acid trifluoroacetate and pyridinium-N-sulfonic acid hydrogen sulfate as highly effective dual-functional catalysts for the preparation of N,N′-alkylidene bisamides

2019 ◽  
Vol 74 (9) ◽  
pp. 641-647 ◽  
Author(s):  
Zahra Kordrostami ◽  
Abdolkarim Zare ◽  
Mostafa Karami
Keyword(s):  
Ionic Liquids ◽  
Sulfonic Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
Disulfonic Acid ◽  
Hydrogen Sulfate ◽  
Reaction Conditions ◽  
Dual Functional ◽  
Solvent Free Conditions ◽  
Acidic Ionic Liquids

AbstractIn this research, Brønsted-acidic ionic liquids N,N,N′,N′-tetramethylethylene-diaminium-N,N′-disulfonic acid trifluoroacetate ([TMEDSA][TFA]2) and pyridinium-N-sulfonic acid hydrogen sulfate ([Py-SO3H][HSO4]) have been introduced as dual-functional catalysts for the green, simple and effective preparation of N,N′-alkylidene bisamides by the reaction of primary amides (2 eq.) with arylaldehydes (1 eq.) under solvent-free conditions. The reaction results and conditions of the catalysts have been compared with the previously reported ones. [TMEDSA][TFA]2 and [Py-SO3H][HSO4] were superior to the previously reported catalysts in terms of two or more of these factors: reaction times (10–45 min), yields (86–98%), temperature and the reaction conditions. Additionally, a plausible and attractive mechanism based on dual functionality of the catalysts has been proposed.

Mixed er-NHC/phosphine Pd(ii) complexes and their catalytic activity in the Buchwald–Hartwig reaction under solvent-free conditions

2019 ◽  
Vol 48 (10) ◽  
pp. 3447-3452 ◽  
Author(s):  
Alexandra A. Ageshina ◽  
Grigorii K. Sterligov ◽  
Sergey A. Rzhevskiy ◽  
Maxim A. Topchiy ◽  
Gleb A. Chesnokov ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solvent Free ◽  
Secondary Amines ◽  
Solvent Free Conditions ◽  
Primary And Secondary Amines

A single catalyst for solvent-free Buchwald–Hartwig amination with both primary and secondary amines.

Recent advances in N-formylation of amines and nitroarenes using efficient (nano)catalysts in eco-friendly media

2019 ◽  
Vol 21 (19) ◽  
pp. 5144-5167 ◽  
Author(s):  
Mahmoud Nasrollahzadeh ◽  
Narjes Motahharifar ◽  
Mohaddeseh Sajjadi ◽  
Amir Moradzadeh Aghbolagh ◽  
Mohammadreza Shokouhimehr ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Polyethylene Glycol ◽  
Solvent Free ◽  
Recent Advances ◽  
Solvent Free Conditions ◽  
Nano Catalysts

N-Formylation of amines or nitroarenes in water, polyethylene glycol, and ionic liquids, as well as under solvent-free conditions, is summarized.

Lewis basic ionic liquids-catalyzed synthesis of 5-aryl-2-oxazolidinones from aziridines and CO2 under solvent-free conditions

2010 ◽  
Vol 12 (10) ◽  
pp. 1850 ◽  
Author(s):  
Zhen-Zhen Yang ◽  
Liang-Nian He ◽  
Shi-Yong Peng ◽  
An-Hua Liu
Keyword(s):  
Ionic Liquids ◽  
Solvent Free ◽  
Solvent Free Conditions
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