Oxygen atom transfer to iridium(Cp*) complexes with bidentate ligands will be discussed. Oxidations are conducted at low temperatures, and intermediates and reaction products are characterized by NMR spectroscopy. Oxygen atom transfer to the central carbon of a coordinated nitrile was observed using a soluble iodosylbenzene derivative and an Ir(Cp*)(phenylpyridine) cation with an electron-deficient bis-(trifluoromethyl)benzonitrile ligand. Insertion into the iridium-carbon bond of coordinated phenylpyridine followed rapidly, forming a coordinated organic amide moiety. A second oxygen atom transfer occurs if no trapping ligands are present. Comparable studies with nitrene transfer reagents have also been explored. The role of high valent metal intermediates in metal mediated oxidation reactions will be discussed.

Low temperature oxidations of iridium(Cp*) complexes

249th National Meeting (2015)

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