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A series of copper(I)−α-ketocarboxylate complexes have been prepared and shown to exhibit variable coordination modes of the α-ketocarboxylate ligand. Reaction with O2 induces decarboxylation of this ligand, and the derived copper−oxygen intermediate(s) has been intercepted, resulting in hydroxylation of an arene substituent on the supporting N-donor ligand. Theoretical calculations have provided intriguing mechanistic notions for the process, notably implicating hydroxylation pathways that involve novel [CuI−OOC(O)R] and [CuII−O-• ↔ CuIIIO2-]+ species.

journal of the american chemical society

Copper(I)−α-Ketocarboxylate Complexes: Characterization and O<sub>2</sub> Reactions That Yield Copper−Oxygen Intermediates Capable of Hydroxylating Arenes

Copper(I)−α-Ketocarboxylate Complexes: Characterization and O2 Reactions That Yield Copper−Oxygen Intermediates Capable of Hydroxylating Arenes

Copper(I)−α-Ketocarboxylate Complexes: Characterization and O₂ Reactions That Yield Copper−Oxygen Intermediates Capable of Hydroxylating Arenes