Double-coupling of dibromo arenes with aryltriolborates for synthesis of diaryl-substituted planar frameworks |
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| Authors: | Gao-Qiang LiYasunori Yamamoto Norio Miyaura |
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| Institution: | Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan |
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| Abstract: | A new method for simple and practical synthesis of diaryl-substituted arenes using potassium aryltriolborates was developed. Double-cross-coupling of dibromo arenes with aryltriolborates was carried out in the presence of a palladium catalyst, such as Pd(OAc)2, Pd(PPh3)4 or Pd(OAc)2/BIPHEP. The use of CuCl (40 mol %) with a palladium catalyst was found to be highly effective to give diaryl-substituted aromatic compounds in good yields. |
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| Keywords: | Aryltriolborates Palladium catalyst Cross-coupling reaction Dibromo arenes Double arylation |
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