Selective Synthesis of 5‐Substituted
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‐Aryloxazolidinones by Cycloaddition Reaction of Epoxides with Arylcarbamates Catalyzed by the Ionic Liquid BmimOAc
作者:Elnazeer H. M. Elageed、Bihua Chen、Binshen Wang、Yongya Zhang、Shi Wu、Xiuli Liu、Guohua Gao
DOI:10.1002/ejoc.201600474
日期:2016.7
5-substituted N-aryloxazolidinones in excellent yields. In addition, chiral 5-substituted oxazolidinones were synthesized by this procedure in good-to-excellent yields with enantiomeric excesses in excess of 99.9 % starting from chiral terminalepoxides. A possible reaction mechanism is discussed in accord with the results obtained by 1H NMR spectroscopy and DFT calculations, which indicate the cooperative activation
Spirulina (Arthrospira) platensis Supported Ionic Liquid as a Catalyst for the Synthesis of 3-Aryl-2-oxazolidinones from Carbon Dioxide, Epoxide, Anilines
study investigates the potential application of the (Ammonio)butane-1-sulfonate modified Spirulina (Arthrospira) platensis biomasses in the synthesis of 3-aryl-2-oxazolidinones from CO2, ethylene oxide, and anilines. High catalytic activity and ease of recovery from the reaction mixture using filtration and several reuse times without significant losses in performance are additional eco-friendly attributes
DBU and DBU-Derived Ionic Liquid Synergistic Catalysts for the Conversion of Carbon Dioxide/Carbon Disulfide to 3-Aryl-2-oxazolidinones/[1,3]Dithiolan-2-ylidenephenyl- amine
作者:Binshen Wang、Zhoujie Luo、Elnazeer H. M. Elageed、Shi Wu、Yongya Zhang、Xiaopei Wu、Fei Xia、Guirong Zhang、Guohua Gao
DOI:10.1002/cctc.201500928
日期:2016.2
the reaction effectively. Based on these results, a possible reaction mechanism on the synergistic catalysis of DBU and the ionicliquid is proposed. In addition, the reaction of CS2, ethyleneoxide, and aniline catalyzed by the combination of DBU and the DBU‐derived ionicliquid also proceeds smoothly, which opens a hitherto unreported route to [1,3]dithiolan‐2‐ylidenephenylamine in a straightforward
ethylene oxide, CO2 , and anilines. The prepared catalytic apparatus was eco-friendly and had the advantages of high catalytic activity, ability to improve the reaction mixture, and reusability without a considerable decrease in efficiency. It is extracted in the straight and adoptive chemicalfixation of flue-gas CO2 obtained from industrial emissions, thereby achieving high degrees of CO2 absorption
One-Pot Conversion of Carbon Dioxide, Ethylene Oxide, and Amines to 3-Aryl-2-oxazolidinones Catalyzed with Binary Ionic Liquids
作者:Binshen Wang、Elnazeer H. M. Elageed、Dawei Zhang、Sijuan Yang、Shi Wu、Guirong Zhang、Guohua Gao
DOI:10.1002/cctc.201300801
日期:2014.1
An effective one‐pot method for the conversion of carbondioxide, ethyleneoxide, and amines to 3‐aryl‐2‐oxazolidinones has been developed. This one‐pot method consists of two parallel reactions and a subsequent cascade reaction between the two products of the corresponding parallel reactions. Notably, the binaryionicliquids of 1‐butyl‐3‐methyl‐imidazolium bromide and 1‐butyl‐3‐methyl‐imidazolium