Physical-chemical properties of chiral ionic liquids derived from the phenylethylamine enantiomers

Sixteen imidazolium based chiral ionic liquids (CILs) containing Br− and BF4− anions, derived from both enantiomers of phenylethylamine, were synthesized. The imidazole ring was constructed through a condensation reaction of formaldehyde, glyoxal and ammonium hydroxide in aqueous media resulting in a simple, versatile and environmentally friendly protocol. The CILs were synthesized with propyl, butyl, pentyl or hexyl alkyl substituents, which...