Dihydrogen Activation with tBu3P/B(C6F5)3: A Chemically Competent Indirect Mechanism via in Situ-Generated p-tBu<

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• 作者：Adam J. V. Marwitz ; Jason L. Dutton ; Lauren G. Mercier ; Warren E. Piers
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：July 6, 2011
• 年：2011
• 卷：133
• 期：26
• 页码：10026-10029
• 全文大小：746K
• 年卷期：v.133,no.26(July 6, 2011)
• ISSN：1520-5126

文摘

A chemically competent indirect pathway for the activation of dihydrogen by the nonmetal Lewis acid/Lewis base pair ^tBu₃P/B(C₆F₅)₃ is described. The reaction between ^tBu₃P and B(C₆F₅)₃ produces [^tBu₃PH]⁺[FB(C₆F₅)₃]^{鈭?/sup> and the known phosphinoborane p-tBu₂P鈥揅₆F₄鈥揃(C₆F₅)₂ (1-tBu) with elimination of isobutylene. At 1:1 stoichiometry, 1-tBu is produced rapidly in detectable quantities and can act as a catalyst for the formation of [tBu₃PH]+[HB(C₆F₅)₃]鈭?/sup> from tBu₃P and B(C₆F₅)₃ in the presence of H₂. The extent to which this indirect path competes with the direct path is explored.}