Highly Enantioselective Cyclopropanation of Styrenes with Diazoacetates Catalyzed by Optically Active <i>β</i>-Ketoiminato Cobalt(II) Complexes

• Taketo Ikeno

  Department of Chemistry, Faculty of Science and Technology, Keio UniversityHiyoshi, Kohoku-ku, Yokohama

• Mitsuo Sato

  Department of Chemistry, Faculty of Science and Technology, Keio UniversityHiyoshi, Kohoku-ku, Yokohama

• Tohru Yamada

  Department of Chemistry, Faculty of Science and Technology, Keio UniversityHiyoshi, Kohoku-ku, Yokohama

抄録

The highly enantioselective cyclopropanation of styrenes with diazoacetates was achieved using reasonably designed β-ketoiminato cobalt(II) complex catalysts. In the presence of optically active cobalt(II) complexes derived from optically active 1,2-(2,4,6-trimethylphenyl)-1,2-ethylenediamine, the cyclopropanation of styrene with methyl, ethyl, and tert-butyl diazoacetates proceeded to afford the corresponding cyclopropanecarboxylates with 94-96% ee.

収録刊行物

• Chemistry Letters

  Chemistry Letters 28 (12), 1345-1346, 1999-12-01

  Oxford University Press (OUP)

キーワード

• General Chemistry

詳細情報

• CRID: 1360565169063050624
• NII論文ID: 10004704441
• NII書誌ID: AA00603318
• DOI: 10.1246/cl.1999.1345
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/28/12/1345/56076888/cl.1999.1345.pdf
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