Synthesis and applications of room temperature ionic liquids

Abstract

A variety of room temperature ionic liquids have been synthesized and applied to various reactions. Four of these ionic liquids were prepared in a chiral manner: [1-butyl-3- methylimidazolium][L-lactate], [1-butyl-3-methylimidazolium][D-lactate], [1-butyl-3- methylimidazolium][(1S)(+)-10-camphorsulfonate], and [1-butyl-3-methylimidazolium][(1R)(-)-10- camphorsulfonate]. These chiral ionic liquids were used as solvents in asymmetric spiroacetal cyclizations and Truce-Smiles rearrangements to induce chirality to the reactions. Additionally, four other ionic liquids were synthesized for use in electrochemical experiments: [1-butyl-3-methylimidazolium][BF4], [1-butyl-3-methylimidazolium][PF6], [1-butyl-3- methylimidazolium][SCN] and [1-butyl-3-methylimidazolium][Tau]. These ionic liquids were used as an additive during electrochemical nickel deposition and dissolution to improve the effect of the Watts solution.