title: Enantioselective Synthesis of 4-Unsubstituted 3-Alkoxy- and 3-Aminoazetidin-2-ones from Formaldehyde N,N-Dialkylhydrazones We thank the Dirección General de Investigación Científica y Técnica for financial support (Grant no. PB 97/0747). We also thank the Ministerio de Educación y Ciencia for a doctoral fellowship to A.F.
authors.affiliation: Dpto. de Química Orgánica Universidad de Sevilla, Seville (Spain).
authors.initials: R
authors.lastname: Fernández
authors.initials: A
authors.lastname: Ferrete
authors.initials: JM
authors.lastname: Lassaletta
authors.initials: JM
authors.lastname: Llera
authors.initials: A
authors.lastname: Monge