Catalytic Phenylborylation Reaction by Iridium(0) Nanoparticles Produced from Hydridoiridium Carborane

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• 作者：Zhu Yinghuai ; Koh Chenyan ; Ang Thiam Peng ; A. Emi ; Winata Monalisa ; Loo Kui-Jin Louis ; Narayan S. Hosmane ; John A. Maguire
• 刊名：Inorganic Chemistry
• 出版年：2008
• 出版时间：July 7, 2008
• 年：2008
• 卷：47
• 期：13
• 页码：5756 - 5761
• 全文大小：3484K
• 年卷期：v.47,no.13(July 7, 2008)
• ISSN：1520-510X

文摘

Well-dispersed iridium(0) nanoparticles stabilized with the ionic liquid, trihexyltetradecylphosphonium methylsulfonate, [THTdP][MS], have been successfully prepared by reduction of the precursor hydridoiridium carborane, (Ph₃P)₂Ir(H)(7,8-nido-C₂B₉H₁₁). The iridium nanoparticles were found to be active catalysts for arylborylation, forming boric acids. The activity of the catalyst has been investigated as a function of the activating base, and reaction conditions. The highest yield of 91% was achieved in a microwave reactor using the base, tetra-2-pyridinylpyrazine, in the presence of [THTdP][MS]. The catalytic system could be recycled at least six times with less than a 0.5% loss of activity.