Taichi Nakazawa

Publications (2)10.31 Total impact

• Article: Biphenylene-substituted ruthenocenylphosphine for Suzuki-Miyaura coupling of sterically hindered aryl bromides.

  Takashi Hoshi, Ippei Saitoh, Taichi Nakazawa, Toshio Suzuki, Jun-ichi Sakai, Hisahiro Hagiwara
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  ABSTRACT: A highly general, active, and stable catalytic system was realized in the palladium-catalyzed Suzuki-Miyaura reactions of sterically hindered aryl bromides with arylboronic acids using biphenylene-substituted di-tert-butylruthenocenylphosphine (R-Phos) as a supporting ligand.
  The Journal of Organic Chemistry 05/2009; 74(10):4013-6. · 4.45 Impact Factor
• Article: Biphenylene-substituted ruthenocenylphosphine for Suzuki-Miyaura coupling of aryl chlorides.

  Takashi Hoshi, Taichi Nakazawa, Ippei Saitoh, Ayako Mori, Toshio Suzuki, Jun-ichi Sakai, Hisahiro Hagiwara
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  ABSTRACT: High activity in the palladium-catalyzed Suzuki-Miyaura reactions of aryl chlorides with arylboronic acids was furnished using biphenylene-substituted di- tert-butylruthenocenylphosphine (R-Phos) as a supporting ligand. Substrate combinations even for the construction of highly hindered tetra- ortho-substituted biaryls can be achieved in good to excellent yields with low catalyst loadings in short reaction times.
  Organic Letters 06/2008; 10(10):2063-6. · 5.86 Impact Factor