The importance of metalloporphyrins as chemical models of heme-containing enzymes and their use as catalysts for selective and controlled oxidation reactions have prompted extensive studies 1 of their reactions with a variety of oxidants including hydroperoxides, 2 monoperoxysulfate, 3 iodosylbenzene, 4 iodobenzene diacetate, 5 peracids, 6 pyridine N-oxide, 7 and hypochlorite. 8 As cytochrome P-450 mimics, simple Fe- or Mn–porphyrin complexes ...