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Borylcyanocuprate in a One-Pot Carboboration by a Sequential Reaction with an Electron-Deficient Alkyne and an Organic Carbon Electrophile

Authors

  • Yuri Okuno,

    1. Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo (Japan), Fax: (+81) 3-5841-7263
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  • Dr. Makoto Yamashita,

    Corresponding author
    1. Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo (Japan), Fax: (+81) 3-5841-7263
    • Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo (Japan), Fax: (+81) 3-5841-7263
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  • Prof. Dr. Kyoko Nozaki

    Corresponding author
    1. Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo (Japan), Fax: (+81) 3-5841-7263
    • Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656 Tokyo (Japan), Fax: (+81) 3-5841-7263
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  • This work was supported by Global COE Program (Chemistry Innovation through Cooperation of Science and Engineering) and by KAKENHI (21245023 and 21685006) from MEXT (Japan).

Abstract

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Als entscheidende Zwischenstufe einer „Eintopf“-Carboborierung von Alkinen, an der CuCN⋅2 LiCl, ein Boryllithiumreagens, ein Alkin mit Estersubstituent und ein organisches Elektrophil beteiligt sind, wurde ein Lithiumborylcyanocuprat isoliert und vollständig charakterisiert (siehe Schema). Das syn/anti-Verhältnis der Carboborierungsprodukte lässt sich über die Reaktionstemperatur einstellen.

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