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Si[BOND]H Bond Activation: Bridging Lewis Acid Catalysis with Brookhart’s Iridium(III) Pincer Complex and B(C6F5)3


  • T.R. thanks the Deutscher Akademischer Austauschdienst (Rückkehrstipendium D/12/09215, 2012–2013). M.O. is indebted to the Einstein Foundation (Berlin) for an endowed professorship. Fruitful discussions with Dr. H. F. T. Klare are gratefully acknowledged.


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Different but almost equal: The striking similarities between Brookhart's iridium(III) pincer complex and the electron-deficient tris(pentafluorophenyl)borane in transformations involving Si[BOND]H bond activation are highlighted. Coordination of the Si[BOND]H bond to either Lewis acid enhances the electrophilicity of the silicon atom, thereby enabling its transfer to various Lewis basic groups (see scheme, Do=acetone).

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