Synthesis and application of thermoregulated polyether<br /> modified ionic liquid<br />
Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 3
Abstract
Ionic liquid is applied for organic synthesis. A novel polyether modified quaternary ammonium ionic liquid N-(2-(2-methoxyethoxy)ethyl)-N,N-dimethyl-2-(2-(octyloxy)ethoxy) ethanammonium methanesulfonate was prepared. Its structure and its physical property were characterized by 1H-NMR, MS and DSC. The liquid mixture of this ionic liquid with cyclohexane forms a thermoregulated ionic liquid biphasic system which possesses the property of “mono-phase under high temperature, bi-phase under room temperature”. The hydroformylation of 1-octene catalyzed by Rh/TPPTS complex was successfully conducted in such a biphasic system. The conversion of 1-octene and the yield of aldehyde was 99.3% and 98.5%, respectively, under the optimized reaction conditions. The catalyst retained in the ionic liquid phase can be easily recovered by phase separation and reused. After recycling for six times, almost no loss in the catalyst activity has been found.
Authors and Affiliations
Yonglu LI , Bin ZHAO, Yanhua WANG, Jingyang JIANG
Keywords
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