Cu(acac)2 Immobilized in Ionic Liquids: A Recoverable and Reusable Catalytic System for Aza-Michael Reactions

2005 ◽  
Vol 347 (6) ◽  
pp. 763-766 ◽  
Author(s):  
M. Lakshmi Kantam ◽  
V. Neeraja ◽  
B. Kavita ◽  
B. Neelima ◽  
Mihir K. Chaudhuri ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Catalytic System ◽  
Michael Reactions

Ionic liquid-assisted catalysis for glycosidation of two triterpenoid sapogenins

2019 ◽  
Vol 43 (43) ◽  
pp. 16881-16888 ◽  
Author(s):  
Tenghe Zhang ◽  
Xinlu Li ◽  
Hang Song ◽  
Shun Yao
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ursolic Acid ◽  
Oleanolic Acid ◽  
Catalytic System

In order to study the universality of ionic liquids-assisted glycosidation and explore their catalytic behaviors together with potential, oleanolic acid and ursolic acid were selected to establish catalytic system as typical triterpene sapogenins.

scholarly journals Beneficial Contribution of Biosourced Ionic Liquids and Microwaves in the Michael Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 814
Author(s):  
Katia Bacha ◽  
Kawther Aguibi ◽  
Jean-Pierre Mbakidi ◽  
Sandrine Bouquillon
Keyword(s):  
Ionic Liquids ◽  
Reaction Time ◽  
Michael Reaction ◽  
Chiral Ionic Liquids ◽  
Michael Reactions ◽  
Basic Catalysts ◽  
The Michael Reaction

We developed a synthesis of chiral ionic liquids from proline and one of its derivatives. Nine chiral ionic liquids were synthesized with yields from 78% to 95%. These synthesized ionic liquids played two roles in Michael reactions, as solvents, and as basic catalysts, where the ionic phase could also be reused at least five times without loss of activity. The yields up to 99% were improved by increasing the amount of dimethylmalonate from 1.2 equivalents to 3 or 4 equivalents. Furthermore, the reaction time could be reduced from 24 h to 45 min through microwaves activation.

scholarly journals Highly efficient synthesis of alkylidene cyclic carbonates from low concentration CO2 using hydroxyl and azolate dual functionalized ionic liquids

2021 ◽  
Author(s):  
Guiling Shi ◽  
Ran Zhai ◽  
Haoran Li ◽  
Congmin Wang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic System ◽  
Cyclic Carbonates ◽  
Efficient Synthesis ◽  
Excellent Performance ◽  
Functionalized Ionic Liquid ◽  
Low Concentration ◽  
Propargylic Alcohols ◽  
Highly Efficient

A dual functionalized ionic liquid catalytic system was developed for the reaction between CO2 and propargylic alcohols, and exhibited excellent performance and good reusability, even under a low concentration of CO2 in a gram-scale reaction.

Eco-friendly acetylcholine-carboxylate bio-ionic liquids for controllable N-methylation and N-formylation using ambient CO2 at low temperatures

2019 ◽  
Vol 21 (3) ◽  
pp. 567-577 ◽  
Author(s):  
Wenfeng Zhao ◽  
Xiaoping Chi ◽  
Hu Li ◽  
Jian He ◽  
Jingxuan Long ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Catalytic System ◽  
Low Temperatures ◽  
Mild Conditions ◽  
Ambient Co2

A sustainable and recyclable ionic liquid catalytic system is developed to be efficient in N-methylation or N-formylation of amines with CO2 under mild conditions.

The Novel SO3H-Functionalized Ionic Liquids Promoted Synthesis of Xanthenedione Derivatives in Aqueous Media under Microwave Irradiation

2011 ◽  
Vol 391-392 ◽  
pp. 1354-1357 ◽  
Author(s):  
Bai Lin Li ◽  
Hua Ding Liang ◽  
Ai Guo Zhong ◽  
Dan Qian Xu
Keyword(s):  
Ionic Liquids ◽  
Microwave Irradiation ◽  
Organic Solvents ◽  
Catalytic System ◽  
Aqueous Media ◽  
Environmentally Friendly ◽  
Separation Process ◽  
The Novel ◽  
Simple Operation

Novel SO3H-functionalized ionic liquids were successfully applied as catalysts for synthesis of xanthenediones under microwave irradiation in Aqueous. Various types of Xanthenes were provided in 90-97% yields using the catalytic system of [(HSO3-p)2im][CF3SO3]/H2O. The products could be conveniently separated from the reaction mixture by filtration and the dissolved catalyst could be reused without any treatment, which of the separation process was performed in water without using any organic solvents. The method not only has the adventages of shrot time and simple operation, but also is environmentally friendly.

Highly selective and stable electro-catalytic system with ionic liquids for the reduction of carbon dioxide to carbon monoxide

2015 ◽  
Vol 55 ◽  
pp. 43-46 ◽  
Author(s):  
Feng Zhou ◽  
Shimin Liu ◽  
Benqun Yang ◽  
Peixue Wang ◽  
Ahmad S. Alshammari ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Ionic Liquids ◽  
Catalytic System

Hydrothermal conversion of glucose to levulinic acid using multifunctional ionic liquids: effects of metal ion co-catalysts on the product yield

2018 ◽  
Vol 42 (1) ◽  
pp. 228-236 ◽  
Author(s):  
Komal Kumar ◽  
Firdaus Parveen ◽  
Tanmoy Patra ◽  
Sreedevi Upadhyayula
Keyword(s):  
Ionic Liquids ◽  
Catalytic System ◽  
Metal Ion ◽  
Levulinic Acid ◽  
Product Yield ◽  
Metal Salts ◽  
Hydrothermal Conversion ◽  
Co Catalysts ◽  
Platform Chemicals ◽  
Acidic Ionic Liquids

An efficient catalytic system comprising Bronsted acidic ionic liquids and Lewis acidic metal salts for hydrothermal glucose conversion to platform chemicals.

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