First 1,3-Dipolar Cycloaddition of Azomethine Ylides with (E)-Ethyl 3-Fluoroacrylate: Regio- and Stereoselective Synthesis of Enantiopure Fluorinated Prolines - Bonini, Bianca Flavia; Boschi, Francesca; Franchini, Mauro Comes; Fochi, Mariafrancesca; Fini, Francesco; Mazzanti, Andrea; Ricci, Alfredo (Synlett, 2006)