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Synlett 1992; 1992(7): 575-576
DOI: 10.1055/s-1992-21420
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Synthesis of New Chiral Bipyridine Ligands and Their Application to Asymmetric Cyclopropanation

Katsuji Ito* , Seiichiro Tabuchi, Tsutomu Katsuki
  • *Department of Chemistry, Faculty of Science, Kyushu University 33, Hakozaki, Higashi-ku, Fukuoka 812, Japan
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Publication Date:
08 March 2002 (online)

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Optically active C2 symmetric bipyridines 2 and 3 (8,8′-dimethyl-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-biquinoline and 7,7′-dimethyl-6,6′,7,7′-tetrahydro-5H,5′ H-2,2′-bi-1-pyrindine) were synthesized and their copper complexes were used as chiral catalysts for the enantioselective cyclopropanation of styrene by tert-butyl diazoacetate.

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