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Synfacts 2008(12): 1307-1307
DOI: 10.1055/s-0028-1087337
DOI: 10.1055/s-0028-1087337
Metal-Catalyzed Asymmetric Synthesis and Stereoselective Reactions
© Georg Thieme Verlag
Stuttgart ˙ New York
Borobox Ligands for Asymmetric Henry Reactions
A. Toussaint, A. Pfaltz*
University of Basel, Switzerland
Weitere Informationen
Publikationsverlauf
Publikationsdatum:
20. November 2008 (online)
![](https://www.thieme-connect.de/media/synfacts/200812/lookinside/thumbnails/10.1055-s-0028-1087337-1.jpg)
Significance
The Pfaltz group has extended the scope and applications of its borabox ligand which was first introduced in 2005 for asymmetric cyclopropanation and desymmetrization of meso diols (Angew. Chem. Int. Ed. 2005, 44, 4888). Asymmetric Henry reaction of several nitromethane derivatives with a wide range of aromatic and aliphatic aldehydes catalyzed by a copper-borabox complex gave addition products in good yields with modest to excellent dr and ee values.