title: Enantioselective Hydrosilylation of Imines Catalyzed by Chiral Zinc Acetate Complexes.
abstract: A series of zinc acetate complexes with optically pure diphenylethanediamine (DPEDA)-derived ligands have been employed as enantioselective catalyst for the hydrosilylation of various imines. High control of stereoselectivity (up to 97% ee) and excellent yields (up to 96%) were gained for a broad range of N-phosphinoylimines by using (R,R)-N,N'-dibenzyl-1,2-diphenylethane-1,2-diamine. This is the first successful application of an air-stable and environmentally friendly chiral Zn(OAc)2 complex instead of the previously used harmful diethylzinc in the asymmetric reduction of the C═N double bond.
authors.affiliation: Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland.
authors.forename: Agata
authors.initials: A
authors.lastname: Bezłada
authors.affiliation: Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Szewczyk
authors.affiliation: Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland.
authors.forename: Jacek
authors.initials: J
authors.lastname: Mlynarski