Catalytic hydrodefluorination (HDF) of unactivated fluoroalkanes or CF₃‐substituted aryl species is performed using the P^III Lewis acids, [(bipy)PPh]²⁺ (1²⁺) and [(terpy)PPh]²⁺ (2²⁺) under mild conditions (25 or 50 °C). Mechanistic studies indicate that activation of C−F bond by the P^III center is key. Particularly noteworthy is that the catalyst 2[B(C₆F₅)₄]₂ is air‐stable and readily accessible from bench‐stable, commercially available reagents in one‐step and can be used without isolation.

中文翻译：

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空气稳定的PIII路易斯酸催化C-F键加氢脱氟

催化加氢脱（HDF）未活化的氟代或CF的_3个使用P进行取代的芳基物种^III路易斯酸，[（联吡啶）PPH] ²⁺（1 ²⁺）和[（三联吡啶）PPH] ²⁺（2 ²⁺）在温和的条件下（25或50°C）。机理研究表明，P ^III中心激活CF键是关键。尤其值得一提的是，催化剂2 [B（C ₆ F ₅）₄ ] ₂是空气稳定的，可从一步稳定的市售试剂中一步一步获得，并且无需分离即可使用。