title: Design of chiral ligands for asymmetric catalysis: from C2-symmetric P,P- and N,N-ligands to sterically and electronically nonsymmetrical P,N-ligands.
abstract: For a long time, C(2)-symmetric ligands have dominated in asymmetric catalysis. More recently, nonsymmetrical modular P,N-ligands have been introduced. These ligands have been applied successfully in various metal-catalyzed reactions and, in many cases, have outperformed P,P- or N,N-ligands.
authors.affiliation: Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland. andreas.pfaltz@unibas.ch
authors.forename: Andreas
authors.initials: A
authors.lastname: Pfaltz
authors.forename: William J
authors.initials: WJ
authors.lastname: Drury