Metal-Free Phosphine Oxide Reductions Catalyzed by B(C6F5)3 and Electrophilic Fluorophosphonium Cations

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• 作者：Meera Mehta ; Isaac Garcia de la Arada ; Manuel Perez ; Digvijay Porwal ; Martin Oestreich ; Douglas W. Stephan
• 刊名：Organometallics
• 出版年：2016
• 出版时间：April 11, 2016
• 年：2016
• 卷：35
• 期：7
• 页码：1030-1035
• 全文大小：292K
• 年卷期：0
• ISSN：1520-6041

文摘

The hydrosilylation/reduction of tertiary and secondary phosphine oxides to phosphines is catalyzed by B(C₆F₅)₃ or electrophilic fluorophosphonium cations (EPCs). B(C₆F₅)₃ is an effective catalyst for phosphine oxide reduction using (EtO)₃SiH, PhSiH₃, and Ph₂SiH₂ at elevated temperature (105 °C), while EPCs effect the same reduction at significantly lower temperature with PhSiH₃ as reducing agent, allowing for good functional-group tolerance.