Synthesis of α-Amino Acids via a Carbolithiation Reaction on Acyclic Ene-Carbamates and an Internal N→C Alkyloxycarbonyl Migration - Cottineau, Bertrand; Gillaizeau, Isabelle; Farard, Julien; Auclair, Marie-Laure; Coudert, Gérard (Synlett, 2007)