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 ionic liquid is proposed. In addition, the reaction of CS2, ethylene oxide, and aniline catalyzed by the combination of DBU and the DBU‐derived ionic liquid also proceeds smoothly, which opens a hitherto unreported route to [1,3]dithiolan‐2‐ylidenephenylamine in a straightforward
已开发出1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)和DBU衍生的溴化物离子液体的分子间协同催化组合,用于在金属和金属条件下转化CO 2,环氧化物和胺。无溶剂条件。在短时间内,以中等至极好的收率生产出各种3-芳基-2-恶唑烷酮。NMR光谱和DFT计算表明,DBU作为氢键受体,离子液体作为氢键供体,通过诱导氢键有效地促进反应,从而共同激活底物。基于这些结果,提出了DBU与离子液体协同催化的可能反应机理。此外,CS 2的反应,通过DBU和DBU衍生的离子液体的组合催化的环氧乙烷和苯胺也能顺利进行,这开辟了迄今未报道的直接通往[1,3] dithiolan-2-ylphenylenephenylamine的途径。