Abstract Stereoselective enolate trapping of lithium (1S, 2R, 4R)-10- dicyclohexylsulfamoylisobornyl-2-cyano-3-phenylpropanoate with O-(diphenylphosphinyl) hydroxylamine followed by appropriate reduction, hydrolysis, and cyclisation processes allows the asymmetric synthesis of (S)-3-amino-3-benzyl-2-azetidinone.
