Cationic Pt(II) complexes supported with 2,2'-bipyridyl (bpy) ligands have been shown to be effective catalysts for olefin hydroarylation. The donor ability of 4,4'-disubstituted bpy ligands impacts the selectivity and longevity of the catalyst. Thus, we sought to prepare N-heterocyclic carbene complexes with Pt(II) metal centers in an attempt to generate catalysts with strongly donating ancillary ligands. Complexes such as [(IMes*)2Pt(Me)][BAr'4] (IMes = 1,3-bis-(2,4,6-trimethylphenyl)imidazol-2-ylidene, Ar' = 3,5-bis(trifluoromethyl)phenyl), [(IMes)2Pt(Me)(NCMe)][BAr'4], and [(IPr)Pt(I)(�-I)]2 (IPr = 1,3-bis-(2,6-diisopropylphenyl)imidazol-2-ylidene) were isolated as potential catalyst precursors. Preliminary results suggest these NHC-Pt complexes catalyze olefin hydroarylation. This presentation will focus on the synthesis and characterization of these Pt(II) complexes and evaluation of their efficacy as catalysts for olefin hydroarylation.

<i>N</i>-heterocyclic carbene platinum(II) complexes for catalytic olefin hydroarylation

247th National Meeting (2014)

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N-heterocyclic carbene platinum(II) complexes for catalytic olefin hydroarylation