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Synthesis 2005(1): 147-157
DOI: 10.1055/s-2004-831247
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
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.
Key words
asymmetric synthesis - synthetic methods - allylic substitution - organocopper reagents - Grignard reagents