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Intermolecular Oxidative Addition of Aryl Halides to Platinum(II) Alkyl Complexes

TitleIntermolecular Oxidative Addition of Aryl Halides to Platinum(II) Alkyl Complexes
Publication TypeJournal Article
Year of Publication2019
AuthorsAltus, KM, Bowes, EG, D. Beattie, D, Love, JA
JournalORGANOMETALLICS
Volume38
Pagination2273-2277
Date PublishedMAY 27
ISSN0276-7333
Abstract

We report a well-defined example of intermolecular aryl halide oxidative addition (OA) to Pt(II). Complexes of the type (IMes)PtMe2(L) and (IMes')PtMe(L) (L = SMe2, pyridine; IMes = N,N-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene; IMes' = cyclometalated IMes) undergo intermolecular OA of phenyl iodide (PhI) at 60 degrees C, producing toluene via reductive elimination from a proposed Pt(IV) phenyl species. Isolation of a model Pt(IV) OA product provides evidence for a Pt(II)/Pt(IV) pathway. The OA of PhI is not limited to Pt(II) IMes complexes; analogous reactions also proceed with phosphine-ligated Pt(II) dialkyl complexes, demonstrating that this reaction is feasible for a variety of electron-rich Pt(II) complexes bearing labile ligands.

DOI10.1021/acs.organomet.9b00195