Progress in Chiral-Functioned Ionic Liquids

Chiral ionic liquids(CIL), as one kind of functionalized ionic liquids(ILs) have both the properties of chirality and ILs. Besides chiral features, they are almost of no vapor pressure, non-flammability, high chemical stability, high conductivity and recyclable. Moreover, organic and inorganic matters can easily be dissolved in them. Chiral ionic liquids are used as chiral solvents, catalyst carrier or chiral inducer in chiral synthesis, chiral separation, chiral catalysis and other fields. This paper overviews the recent progress in the synthesis of chiral ionic liquids. In addtion, some new synthesis techniques are introduced. At last, the development and research direction of CILs are given.