Enantiopure exo- and endo-palladacycles derived from 2,4-disubstituted 2-oxazolines

ORGN 448

Kristopher J. Keuseman1, Olga N. Gorunova2, Christopher J. Dehen1, Valery V. Dunina2, and Irina P. Smoliakova1. (1) Department of Chemistry, University of North Dakota, PO Box 9024, Grand Forks, ND 58202-9024, (2) Moscow State University, Russia
Direct cyclopalladation of a number of enantiopure 2,4-disubstituted 2-oxazolines was carried out using Pd(OAc)2 and NaOAc in AcOH. The synthesized exo- and endo-cyclic dimeric m-acetate cyclopalladated complexes (CPCs) were converted to their corresponding dimeric m-chloro analogs as well as mononuclear PPh3 complexes. Structural characterization of these complexes was done by NMR, IR, UV, and CD spectroscopy, and X-ray analysis. These palladacycles were tested as chiral templates in a number of reactions.