Previously we have reported catalytic CH activation of benzene and some (poly)methylbenzenes by PtII complexes supported by novel sulfonated CNN-pincer ligands (L) in 2,2,2-trifluoroethanol solutions. When the reactions are carried out under air or O2 atmosphere at 20 oC, both CH and O2 activation at LPtII are observed leading to arene oxidation to produce the derived PtIV aryl hydroxo complexes. This is the first realization of two key steps of a plausible catalytic cycle of long-sought-after catalytic aerobic CH functionalization of hydrocarbons. In this presentation, in addition to a detailed characterization of this reaction, its mechanistic analysis will be given.

Catalytic C(sp2)-H bond activation and stoichiometric oxidation of arenes with O2 mediated by sulfonated PtII pincer complexes: A mechanistic characterization

256th National Meeting (2018)

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