4437-83-6Relevant articles and documents
Recyclable Bifunctional Polystyrene and Silica Gel-Supported Organocatalyst for the Coupling of CO2 with Epoxides
Kohrt, Christina,Werner, Thomas
, p. 2031 - 2034 (2015)
A bifunctional ammonium salt covalently bound to a polystyrene or silica support proved to be an efficient and recyclable catalyst for the solvent-free synthesis of cyclic carbonates from epoxides and CO2. The catalyst can be easily recovered b
Phenolic hydroxyl-functionalized imidazolium ionic liquids: Highly efficient catalysts for the fixation of CO2 to cyclic carbonates
Wu, Shi,Wang, Binshen,Zhang, Yongya,Elageed, Elnazeer H.M.,Wu, Haihong,Gao, Guohua
, p. 1 - 8 (2016)
A series of imidazolium ionic liquids were designed and synthesized by the reaction of imidazole derivatives with alkyl bromides. These ionic liquids were applied to catalyze the reaction of CO2 and epoxides. A detailed investigation was carried out on the relationship between catalytic activities and catalyst structures. The result showed that phenolic hydroxyl-functionalized imidazolium ionic liquids containing both phenolic hydroxyl and C2-H were highly efficient catalysts. Meanwhile, the spatial positions of the phenolic hydroxyl and C2-H in the imidazolium also exhibited great effect on the catalytic efficiencies, and the order of catalytic activity was meta-isomer > ortho-isomer > para-isomer. NMR titration and DFT calculations showed a synergetic effect, which C2-H and phenolic hydroxyl cooperatively activated epoxides by hydrogen bonds, was crucial for the reaction to proceed smoothly under mild conditions. In addition, the TOF of the most active catalyst 3-(3-phenolic hydroxyl)-1-butyl-imidazolium bromide (IL-2) reached to 900 h-1 in the reaction of CO2 and epichlorohydrin under the reaction conditions of 0.1 mol% catalyst, 1 MPa CO2, 120 °C and 1 h.
Cellulosic poly(ionic liquid)s: Synthesis, characterization and application in the cycloaddition of CO2 to epoxides
Chen, Qin,Peng, Chang,Xie, Haibo,Zhao, Zongbao Kent,Bao, Ming
, p. 44598 - 44603 (2015)
Cellulosic poly(ionic liquid)s (PILs) were prepared via nucleophilic substitution of chlorinated cellulose by 1-methyl-imidazole and their structure and thermal properties have been fully characterized; the cellulosic PILs were found to be green, efficien
Efficient Conversion of Epoxides into Carbonates with CO 2 and a Single Organocatalyst: Laboratory and Kilogram-Scale Experiments
Azzouz, Rabah,Bischoff, Laurent,Contreras Moreno, Viviana,Derrouiche, Salim,Estel, Lionel,Herasme-Grullon, Clara,Ledoux, Alain,Levacher, Vincent,Marsais, Francis
, p. 183 - 188 (2020)
Cheap and readily available 2-aminopyridine and related compounds can be used as organocatalysts for the conversion of epoxides into cyclic carbonates. This reaction gives high conversions under solvent-free conditions and is amenable to a kilogram-scale
Porous Metal-Organic Frameworks with Chelating Multiamine Sites for Selective Adsorption and Chemical Conversion of Carbon Dioxide
Zhao, Dan,Liu, Xiao-Hui,Guo, Jin-Han,Xu, Hua-Jin,Zhao, Yue,Lu, Yi,Sun, Wei-Yin
, p. 2695 - 2704 (2018)
A combination of carbon dioxide (CO2) capture and chemical fixation in a one-step process is attractive for chemists and environmentalists. In this work, by incorporating chelating multiamine sites to enhance the binding affinity toward CO
MOF-5/n-Bu4NBr: An efficient catalyst system for the synthesis of cyclic carbonates from epoxides and CO2 under mild conditions
Song, Jinliang,Zhang, Zhaofu,Hu, Suqin,Wu, Tianbin,Jiang, Tao,Han, Buxing
, p. 1031 - 1036 (2009)
The development of efficient heterogeneous catalysts for the cycloaddition of CO2 with epoxides to produce five-membered cyclic carbonates under mild reaction conditions is of great importance. In this work, the coupling reaction of CO2/s
RECYCLIZATION OF DIGLYCIDYL CARBONATE ON REACTION WITH PHENOLS
Klebanov, M. S.,Chervinskii, A. Yu.
, p. 552 (1991)
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Mechanochemical Process to Construct Porous Ionic Polymers by Menshutkin Reaction
Hou, Shengtai,Meng, Minshan,Liu, Dandan,Zhang, Pengfei
, p. 3059 - 3063 (2021)
Abstract: The synthesis of porous ionic polymers (PIPs) via the Menshutkin reaction is intriguing because the reaction works smoothly in catalyst-free condition with 100 % atom utilization. However, the rotation of methane site, nonrigid knots, and charge
Histidine-catalyzed synthesis of cyclic carbonates in supercritical carbon dioxide
Qi, Chaorong,Jiang, Huanfeng
, p. 1566 - 1570 (2010)
The coupling reaction of carbon dioxide with epoxides was investigated using naturally occurring α-amino acids as the catalyst in supercritical carbon dioxide and it was found that L-histidine is the most active catalyst. In the presence of 0.8 mol% of L-
Amidine-mediated delivery of CO2 from gas phase to reaction system for highly efficient synthesis of cyclic carbonates from epoxides
Barkakaty, Balaka,Morino, Kazuhide,Sudo, Atsushi,Endo, Takeshi
, p. 42 - 44 (2010)
A novel, efficient synthesis of cyclic carbonates from the reaction of epoxides and gaseous CO2 under mild conditions (1 atm, rt to 45 °C) was achieved in reasonable yields (65-83%) by using N- methyltetrahydropyrimidine (MTHP) that facilitated efficient delivery of CO 2 from the gas phase to the reaction system.
Method for catalytically synthesizing cyclic carbonate by using metal coordination ionic liquid
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Paragraph 0019; 0021; 0034; 0044-0046, (2021/01/25)
The invention relates to a method for preparing cyclic carbonate by catalyzing CO2 and epoxide with a metal coordination type ionic liquid. The method is characterized in that the metal coordination type ionic liquid is used as a catalyst, the using amount of the catalyst is 1.0-10.0 mol% of the epoxide, and the cyclic carbonate is prepared under the conditions that the reaction pressure is 0.1-20.0 bar and the reaction temperature is 20-150 DEG C; and catalyzing cycloaddition of epoxide and carbon dioxide to prepare corresponding cyclic carbonate under the condition that the reaction time is0.25-12h. According to the method, efficient catalytic activity can be shown under the reaction conditions of room temperature and normal pressure, additional cocatalysts and other solvents do not need to be added, and repeated recycling of the catalyst can be achieved.
Rosin-based porous heterogeneous catalyst functionalized with hydroxyl groups and triazole groups for CO2 chemical conversion under atmospheric pressure condition
Gao, Jinbin,Lai, Shilin,Xiong, Xingquan
, (2021/07/14)
Development of efficient, green and recyclable heterogeneous catalysts for the chemical conversion of CO2 into cyclic carbonates with excellent yields under atmospheric pressure condition is still a very challenging task. Herein, a class of biomass-derived hyper-cross-linked porous heterogeneous catalysts MPAc-Br and MPAc-OH-Br, based on easily available and sustainable rosin, was synthesized by Friedel–Crafts polymerization and the further N-alkylation of triazole groups. Compared with MPAc-Br, the bifunctional catalyst MPAc-OH-Br (bearing triazole IL groups and -OH groups) exhibited higher catalytic activity for direct chemical conversion of CO2 into cyclic carbonates (up to 99% yields) under metal-, solvent-free and atmospheric pressure conditions. The rosin-based porous molecular structure and bifunctional groups on the surface of MPAc-OH-Br played a very important role in the promoting the cycloaddition of CO2 with epoxides under the optimal conditions. Furthermore, MPAc-OH-Br exhibited good stability and reusability (96% yield after 10 recycles).