Synthesis 2005(1): 147-157  
DOI: 10.1055/s-2004-831247
FEATUREARTICLE
© Georg Thieme Verlag Stuttgart · New York

Enantioselective Copper-Mediated Allylic Substitution with Grignard Reagents Employing a Chiral Reagent-Directing Leaving Group

Bernhard Breit*, Daniel Breuninger
Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstr. 21, 79104 Freiburg, Germany
Fax: +49(761)203 8715; e-Mail: bernhard.breit@organik.chemie.uni-freiburg.de.;
Further Information

Publication History

Received 31 March 2004
Publication Date:
29 September 2004 (online)

Abstract

Enantioselective copper-mediated allylic substitution with Grignard reagents was achieved employing the ortho-diphenylphosphanylferrocene carboxylate (o-DPPF) system as a planar chiral reagent-directing leaving group. Careful optimization of reaction parameters resulted in excellent regioselectivities and enantioselectivies of up to 95% ee.