β-Amino alcohols, β-amino thiols, and β-diamines can be converted to the corresponding
oxazoline, thiazoline, and imidazoline derivatives, respectively, by reaction with
α,α-difluoroalkylamines under mild conditions. The reaction is applicable for the
synthesis of optically active heterocyclic compounds.
α,α-difluoroalkylamine - heterocycle - amino alcohol - oxazoline - thiazoline - imidazoline