Fluoride Abstraction Induced by Tris(pentafluoroethyl)difluorophosphorane: A Convenient Way to Synthesize Cationic N-Heterocyclic Carbene- and Cyclic (Alkyl)(amino)carbene-Ligated Copper Alkyne and Arene Complexes
Melanie Riethmann,
Steffen A. Föhrenbacher,
Hannes Keiling
et al.
Abstract:We herein report the convenient synthesis of different N-heterocyclic carbene (NHC)-and cyclic (alkyl)(amino)carbene (cAAC)-ligated copper cations using the weakly coordinating tris(pentafluoroethyl)trifluorophosphate counterion (FAP anion, [(C 2 F 5 ) 3 PF 3 ] − ). The reaction of the fluorido complexes [(carbene)CuF] (carbene = NHC, cAAC Me ) 2a−2f and the tris(pentafluoroethyl)difluorophosphorane (C 2 F 5 ) 3 PF 2 in the presence of alkynes or arenes led to fluoride transfer from Cu to the phosphorane with … Show more
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