Hydrogen bonding-catalysed alcoholysis of propylene oxide at room temperature
作者:Yueting Xu、Yanfei Zhao、Fengtao Zhang、Yuepeng Wang、Ruipeng Li、Junfeng Xiang、Zhimin Liu
DOI:10.1039/d1cc03602e
日期:——
Alcoholysis of propylene oxide (PO) is achieved over azolate ionic liquids (IL, e.g., 1-hydroxyethyl-3-methyl imidazolium imidazolate) at roomtemperature, accessing glycol ethers in high yields with excellent selectivity (e.g., >99%). Mechanism investigation indicates that cooperation of hydrogen-bonding of the anion with methanol and that of the cation with PO catalyses the reaction.
环氧丙烷(PO)的醇解是在室温下在唑盐离子液体(IL,例如,1-羟乙基-3-甲基咪唑鎓咪唑盐)上实现的,以高产率和优异的选择性(例如,>99%)获得乙二醇醚。机理研究表明,阴离子与甲醇的氢键和阳离子与 PO 的氢键共同催化了反应。
Highly efficient synthesis of alkylidene cyclic carbonates from low concentration CO<sub>2</sub> using hydroxyl and azolate dual functionalized ionic liquids
作者:Guiling Shi、Ran Zhai、Haoran Li、Congmin Wang
DOI:10.1039/d0gc03510f
日期:——
developed for the reaction between CO2 and propargylicalcohols for alkylidene cyclic carbonates. Ionic liquids (ILs) with different anions and cations were designed as cocatalysts, in order to find out the effect of the cation and the anion on this reaction. The results indicated that the effect of the cation was significant, especially the hydroxyl group on the cation played an important role due