title: [2,2]paracyclophane-based N,O-ligands in alkenylzinc additions to aldehydes.
abstract: [reaction: see text] The application of planar and central chiral [2,2]paracyclophane-based N,O-ligands in asymmetric alkenylzinc additions to various aldehydes is described, which gives rise to very high ee's especially for difficult substrates. A fine-tuning of the alkenylzinc species by employing different transmetalation reagents is reported, allowing control of the steric bulk of the alkenylzinc species and thus the selectivity of the catalysis.
authors.affiliation: Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Dahmen
authors.forename: S
authors.initials: S
authors.lastname: Bräse