C−F Bond Activation by Silylium Cation/Phosphine Frustrated Lewis Pairs: Mono‐Hydrodefluorination of PhCF₃, PhCF₂H and Ph₂CF₂

Abstract

Single defluorination of aryl polyfluoromethyl functionalities is achieved by both intra- and intermolecular silylium cation/phosphine Lewis pairs. Phosphine-captured aryl fluoromethyl cations are then treated with Brønsted base to complete the first mono-hydrodefluorinations of PhCF₃ , Ph₂ CF₂ , and PhCF₂ .