Dioxygen Activation and Catalytic Aerobic Oxidation by a Mononuclear Nonheme Iron(II) Complex

摘要: We have used dioxygen, not artificial oxidants such as peracids, iodosylarenes, and hydroperoxides, in the generation of a mononuclear nonheme oxoiron(IV) complex, [Fe(IV)(TMC)(O)]2+ (TMC = 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane), from its corresponding Fe(II) [Fe(TMC)(CF3SO3)2]. The formation species by activating dioxygen was markedly dependent on iron(II) complexes solvents, this observation interpreted with electronic effect activation to form species. A catalytic aerobic oxidation organic substrates demonstrated presence [Fe(TMC)]2+ complex. By carrying out 18O-labeled water experiment, we were able conclude that mediated an intermediate, radical type autoxidation process.