Aerobic oxidations catalyzed by chromium corroles

Oxochromium(V) complexes of 5,10,15-tris(pentafluorophenyl)corrole and brominated derivatives oxygenate substrates (triphenylphosphine and norbornene) with concomitant production of chromium(III). Regeneration of Cr VO by reaction of dioxygen with CrIII completes an aerobic catalytic cycle, with very large solvent effects; in acetonitrile, rapid initial turnovers observed initially are shut down by formation of Cr IVO, while in toluene, THF, and methanol, relatively slow reactions are further inhibited by product formation. Copyright © 2003 American Chemical Society.