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Synfacts 2005(2): 0232-0232
DOI: 10.1055/s-2005-916102
DOI: 10.1055/s-2005-916102
Metal-Catalyzed Asymmetric Synthesis and Stereoselective Reactions
© Georg Thieme Verlag Stuttgart · New York
Boron-Bridged Bisoxazolines (Borabox): Anionic Ligands for Asymmetric Catalysis
C. Mazet, V. Köhler, A. Pfaltz*
University of Basel, Switzerland
Further Information
Publication History
Publication Date:
25 October 2005 (online)
Significance
In the growing field of asymmetric catalysis new ligands with new properties are needed. This paper describes a new anionic ligand termed borabox that has shown to form stable complexes with CuII, ZnII, PdII, RhI, and IrI ions. The ligand was found to be competent for two benchmark type reactions: cyclopropanation and monobenzoylation of meso-diols. High yields and enantioselectivities were realized for these transformations.