4437-83-6Relevant academic research and scientific papers
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
The effective synthesis of propylene carbonate catalyzed by silica-supported hexaalkylguanidinium chloride
Xie, Haibo,Duan, Haifeng,Li, Shenghai,Zhang, Suobo
, p. 1199 - 1203 (2005)
We have described that both homogeneous and a silica-supported hexaalkylguanidinium chloride were effective catalysts for CO2 fixation to carbonate without any solvent under mild reaction conditions (4.5 MPa, 120 °C, 4 h), the silica-supported
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.
Cyclic carbonate synthesis from epoxides and CO2 over cyanocobalamin/n-Bu4NI
Bai, Dongsheng,Jing, Huanwang,Wang, Guangjian
, p. 600 - 603 (2012)
The synthesis of cyclic carbonates from epoxides and carbon dioxide catalyzed by cyanocobalamin and n-Bu4NI system was achieved under 0.8 MPa CO2 pressure at 140°C without organic solvents. Propylene carbonate was obtained in 99% yie
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
Two Manganese Metalloporphyrin Frameworks Constructed from a Custom-Designed Porphyrin Ligand Exhibiting Selective Uptake of CO2over CH4and Catalytic Activity for CO2Fixation
Magnuson, Zachary L.,Cheng, Qigan,Zhang, Weijie,Chen, Yu-Sheng,Wojtas, Lukasz,Nafady, Ayman,Al-Enizi, Abdullah M.,Larsen, Randy W.,Zhang, X. Peter,Ma, Shengqian
, p. 2786 - 2792 (2021)
In this work, two new metal-metalloporphyrin frameworks (MMPFs), namely, MMPF-12 and MMPF-13, having unique structural formulas as [Mn24O78(Mn-dcdbp)12] and [Mn8.65(dcdbp)8](DMF)14(H2O)8, respectively, were synthesized via the reaction of the custom-desig
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
Functionalized zeolitic imidazolate framework F-ZIF-90 as efficient catalyst for the cycloaddition of carbon dioxide to allyl glycidyl ether
Jose, Tharun,Hwang, Yeseul,Kim, Dong-Woo,Kim, Moon-Il,Park, Dae-Won
, p. 61 - 67 (2015)
In this study, zeolitic imidazolate framework (ZIF-90) was synthesized from Zn(NO3)2·4H2O and imidazolate-2-carboxyaldehyde (ICA), then it was post-functionalized to form F-ZIF-90 using hydrazine followed by quaternization
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
Amino-functional imidazolium ionic liquids for CO2 activation and conversion to form cyclic carbonate
Yue, Chengtao,Su, Dan,Zhang, Xu,Wu, Wei,Xiao, Linfei
, p. 1313 - 1321 (2014)
A series of amino-functional imidazolium ionic liquids have been prepared and used as catalysts for cycloaddition of CO2 with epoxide. The reactions generated the cyclic carbonate even at room temperature under atmospheric pressure. Under the o
