【摘要】 采用快速混合停流技术，在实际反应条件下，考察了五氟代锰卟啉配合物Ｍｎ~Ⅲ（ＴＦＰＰ）Ｃ１与两种单氧给体亚碘酰苯ＰｈＩＯ和过氧苯甲酸ｍ－ＣＰＢＡ构建的细胞色素Ｐ－４５０模拟酶体系催化活性物种的生成及催化烯烃环氧化过程．在氧给体ＰｈＩＯ作用下，Ｍｎ~Ⅲ（ＴＦＰＰ）Ｃ１生成了高价锰氧卟啉配合物和双核μ－氧锰卟啉配合物，具有高的催化环氧化活性和催化剂稳定性．而在氧给体ｍ－ＣＰＢＡ作用下，Ｍｎ~Ⅲ（ＴＦＰＰ）Ｃ１则生成了一种较稳定物种，以致催化活性较低。更多还原

【Abstract】 The reactions of manganese (pentafluorophenyl) porphrin complex, Mn~Ⅲ(TFPP ) C1 with two oxidants iodosobenzene (PhIO) and m-chloroperoxybenzoic acid(m-CPBA) under ambient con- ditions have been investigated by stopped-flow spectraphotometry. It is shown that high-valent oxo- manganese porphyrin complexes and dimeric μ-oxo manganese(IV) porphrin complex intermediates were produced in the reaction between Mu~Ⅲ (TFPP)C1 and PhIO, and the oxomanganese porphrin complexes almost completely decomposed to the corresponding Mn~Ⅲ（TFPP)C1 species. With m-CPBA as the oxygen donor, only a few short-lived high-valent oxomanganese porpdrin complexes were pro- duced. Epoxidization of 1, 4 - diphenylbutadiene (DPBD) by Mn~Ⅲ(TFPP ) C1 with PhIO and m-CPBA showed that since a stable species was produced in the reaction of Mu~Ⅲ (TFPP)C1 with m-CPBA, so the reactivity of this model system was lower than that with oxidant PhIO.更多还原