Synthesis and Characterization of Novel Ester Functionalized Chiral Ionic Liquids

摘要

Three different chiral ionic liquids, chloride (R)-(+)-β-(1-methyl-imidazole)-propio-nate, (R)-(+)-β-(l-methyl-imidazole)-propionate terafluoroborate and hexafluorophosphate, were successfully synthesized via the nucleophilic substitution reaction and the anion metathesis reaction, with (S)-(-)-2-chloro-propionic acid as the chiral source. Structures of the chiral ionic liquids have been characterized by the infrared spectroscopy, nuclear magnetic resonance spectroscopy and quantum chemical structure optimization method. These new ionic materials can be used as building blocks for the synthesis of ionic liquids.