Stereoselective Synthesis of β-Amino-α-Fluoro Esters via Diastereoselective Fluorination of Enantiopure β-Amino Enolates - Andrews, Philip C; Bhaskar, Vijaya; Bromfield, Karen M; Dodd, Aileen M; Duggan, Peter J; Duggan, Sandhya A M; McCarthy, Tom D (Synlett, 2004)