Niobium(v) chloride and imidazolium bromides as efficient dual catalyst systems for the cycloaddition of carbon dioxide and propylene oxide

2014 ◽  
Vol 4 (6) ◽  
pp. 1638-1643 ◽  
Author(s):  
Michael E. Wilhelm ◽  
Michael H. Anthofer ◽  
Robert M. Reich ◽  
Valerio D'Elia ◽  
Jean-Marie Basset ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Propylene Oxide ◽  
Catalyst System ◽  
Cyclic Carbonates ◽  
Imidazolium Salt ◽  
Catalyst Systems

Imidazolium bromides combined with niobium(v) choride were used as catalyst system for the reaction of CO2 with epoxides to cyclic carbonates. The variation of the cation structure strongly affects the properties of the imidazolium salt and therefore the catalytic activity.

Protic pyrazolium ionic liquids for efficient chemical fixation of CO2: design, synthesis, and catalysis

2018 ◽  
Vol 3 (2) ◽  
pp. 348-356 ◽  
Author(s):  
Danning Zheng ◽  
Tengfei Wang ◽  
Xinrui Zhu ◽  
Ci Chen ◽  
Tiegang Ren ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Propylene Oxide ◽  
Coupling Reaction ◽  
Chemical Fixation ◽  
Design Synthesis

Three new protic pyrazolium ILs, HTMPzBr, HMM3PzBr, and HMM5PzBr, have been synthesized to explore their catalytic activity for the coupling reaction of carbon dioxide and propylene oxide.

scholarly journals Recent developments in organocatalysed transformations of epoxides and carbon dioxide into cyclic carbonates

2021 ◽  
Author(s):  
Liping Guo ◽  
Katie J. Lamb ◽  
Michael North
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Metal Free ◽  
Recent Developments ◽  
Catalyst Systems

The synthesis of cyclic carbonates from epoxides and carbon dioxide using metal-free catalyst systems is critically reviewed.

Lanthanide clusters as highly efficient catalysts regarding carbon dioxide activation

2020 ◽  
Vol 44 (13) ◽  
pp. 5019-5022 ◽  
Author(s):  
Wei Hou ◽  
Gang Wang ◽  
Xiaojing Wu ◽  
Shuoyi Sun ◽  
Chunyang Zhao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
High Catalytic Activity ◽  
Cyclic Carbonates ◽  
Highly Efficient ◽  
Carbon Dioxide Activation

Lanthanide clusters display a wide substrate scope and high catalytic activity for the insertion of CO2 into epoxides to form cyclic carbonates.

scholarly journals An efficient Pd–NHC catalyst system in situ generated from Na2PdCl4 and PEG-functionalized imidazolium salts for Mizoroki–Heck reactions in water

2017 ◽  
Vol 13 ◽  
pp. 1735-1744 ◽  
Author(s):  
Nan Sun ◽  
Meng Chen ◽  
Liqun Jin ◽  
Wei Zhao ◽  
Baoxiang Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Imidazole Ring ◽  
Catalyst System ◽  
Water Soluble ◽  
Imidazolium Salts ◽  
Heck Reactions ◽  
Imidazolium Salt ◽  
Simple Method ◽  
Wide Range

Three PEG-functionalized imidazolium salts L1–L3 were designed and prepared from commercially available materials via a simple method. Their corresponding water soluble Pd–NHC catalysts, in situ generated from the imidazolium salts L1–L3 and Na2PdCl4 in water, showed impressive catalytic activity for aqueous Mizoroki–Heck reactions. The kinetic study revealed that the Pd catalyst derived from the imidazolium salt L1, bearing a pyridine-2-methyl substituent at the N3 atom of the imidazole ring, showed the best catalytic activity. Under the optimal conditions, a wide range of substituted alkenes were achieved in good to excellent yields from various aryl bromides and alkenes with the catalyst TON of up to 10,000.

An efficient CO2 fixation reaction with epoxides catalysed by in situ formed blue vanadium catalyst from dioxovanadium(+5) complex: moisture enhanced and atmospheric oxygen retarded catalytic activity

2020 ◽  
Vol 44 (6) ◽  
pp. 2547-2554 ◽  
Author(s):  
Rakhimoni Borah ◽  
Naranarayan Deori ◽  
Sanfaori Brahma
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Co2 Fixation ◽  
Atmospheric Oxygen ◽  
Carbon Dioxide Fixation ◽  
Vanadium Catalyst ◽  
Cyclic Carbonates ◽  
Mild Conditions ◽  
Fixation Reaction

In situ formed vanadium(+4) species catalyzed carbon dioxide fixation reaction, leading to 99% conversion of epoxides to cyclic carbonates under mild conditions is reported here, along with the study on the in situ formed catalyst to some extent.

The kinetics of carbon dioxide and propylene oxide copolymerization catalyzed by binary catalyst system

2015 ◽  
Vol 57 (3) ◽  
pp. 224-227 ◽  
Author(s):  
O. M. Chukanova ◽  
E. V. Bukhovets ◽  
E. O. Perepelitsina ◽  
G. P. Belov
Keyword(s):  
Carbon Dioxide ◽  
Propylene Oxide ◽  
Catalyst System ◽  
Binary Catalyst ◽  
Kinetics Of

scholarly journals Hybrid Catalysts for CO2 Conversion into Cyclic Carbonates

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 325 ◽  
Author(s):  
Carla Calabrese ◽  
Francesco Giacalone ◽  
Carmela Aprile
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Scientific Community ◽  
Heterogeneous Catalysts ◽  
Metal Organic Framework ◽  
High Catalytic Activity ◽  
Co2 Conversion ◽  
Cyclic Carbonates ◽  
Hybrid Catalysts ◽  
Metal Organic

The conversion of carbon dioxide into valuable chemicals such as cyclic carbonates is an appealing topic for the scientific community due to the possibility of valorizing waste into an inexpensive, available, nontoxic, and renewable carbon feedstock. In this regard, last-generation heterogeneous catalysts are of great interest owing to their high catalytic activity, robustness, and easy recovery and recycling. In the present review, recent advances on CO2 cycloaddition to epoxide mediated by hybrid catalysts through organometallic or organo-catalytic species supported onto silica-, nanocarbon-, and metal–organic framework (MOF)-based heterogeneous materials, are highlighted and discussed.

Efficient Catalysts of Acyclic Guanidinium Iodide for the Synthesis of Cyclic Carbonates from Carbon Dioxide and Epoxides under Mild Conditions

Synthesis ◽  
2019 ◽  
Vol 52 (01) ◽  
pp. 150-158 ◽  
Author(s):  
Naoto Aoyagi ◽  
Yoshio Furusho ◽  
Takeshi Endo
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Cycloaddition Reactions ◽  
Cyclic Carbonates ◽  
Polar Solvents ◽  
Mild Conditions ◽  
Iodide Ion ◽  
Good Catalytic Activity ◽  
High Yields ◽  
Guanidinium Salts

We have studied the synthesis of five-membered cyclic carbonates through the cycloaddition of CO2 to epoxides by using acyclic guanidinium salts. We have found that the cycloaddition reactions proceed smoothly at ordinary temperatures and pressures and result in good yields when acyclic guanidinium iodides are employed as catalysts. Both cation moiety and anion moiety of the guanidinium salts play important roles in their catalytic activity. It is essential to have active hydrogens on the cation moiety as well as an iodide ion as the anion moiety so as to achieve good catalytic activity. Guanidinium iodides with three or more active hydrogens give cyclic carbonates in high yields in polar solvents such as 1-methylpyrrolidin-2-one, whereas the guanidinium iodides with one or two active hydrogens show good catalytic activity in less polar solvents such as 2-methyltetrahydrofuran.

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