The remarkable utility of palladium in organometallic catalysis derives from its capacity to mediate two-electron oxidative addition and reductive elimination steps for selective bond activation and functionalization. In pursuing the development of Earth-abundant metal complexes as surrogates for precious metal catalysts, we have discovered that redox-active aminophenol ligands can facilitate selective, palladium-like two-electron organometallic reactions at square planar later 3d metal centers, including C�X oxidative addition and C�C reductive elimination. This presentation will highlight our recent progress in elaborating redox-active ligand complexes for C�C coupling catalysis, via cobalt cross coupling and manganese aerobic oxidative homocoupling of alkyl and aryl Grignard reagents. New N-heterocyclic carbene redox-active ligand cobalt complexes will also be presented, and their potential as catalysts for oxidative C�H bond functionalization will be discussed.

Harnessing redox-active ligands for palladium-like organometallic catalysis at cobalt and manganese

245th National Meeting (2013)

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