1,4-Addition of Arylsiloxanes to Enones Catalyzed by Dicationic Palladium(II) Complexes in Aqueous Media

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  • Takashi Nishikata
    Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido UniversitySapporo
  • Yasunori Yamamoto
    Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido UniversitySapporo
  • Norio Miyaura
    Division of Molecular Chemistry, Graduate School of Engineering, Hokkaido UniversitySapporo

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Abstract

<jats:title>Abstract</jats:title> <jats:p>Catalytic 1,4-addition of arylsiloxanes to enones was carried out at 75 °C in the presence of a dicationic palladium(II) catalyst in aqueous 1,4-dioxane. A nitrile-free complex generated in situ from Pd(dba)2 and Cu(BF4)2 in the presence of dppe or dppben was recognized to be the best catalyst to achieve high yields for the representative enones and enals.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 32 (8), 752-753, 2003-07-21

    Oxford University Press (OUP)

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