| Dioxygen oxidation of hydrocarbons by a methane monooxygenase-like system: diiron complex-O_2-Zn/HOAc-MV~(2 ) |
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| 引用本文： | 魏俊发,何地平,俞贤达. Dioxygen oxidation of hydrocarbons by a methane monooxygenase-like system: diiron complex-O_2-Zn/HOAc-MV~(2 )[J]. 中国科学B辑(英文版), 1999, 0(2) |
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| 作者姓名： | 魏俊发 何地平 俞贤达 |
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| 作者单位： | WEI Junfa HE Diping(Department of Chemistry，Shaanxi Normal University，Xi'an 710062，China)YU Xianda(Lanzhou Institute of Chemical Physics，Chinese Academy of Sciences，Lanzhou 730000，China) |
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| 摘 要： | The activation of dioxygen and incorporation into hydrocarbons have been achieved under mild conditions by a methane monooxygenase (MMO)-like system using a dinuclear iron complex [Fe_2Dhist(OAc)_2]BPh_4·3H_2O as the model complex, zinc powder as the electron donor, HOAc as the proton source and methylviologen as the electron transfer agent. The results show that styrene is oxygenated predominantly to styrene oxide (1 396 mol/100 mol of the Fe_2 complex), benzaldehyde (16160) and acetophenone (986), and cyclohexane to cyclohexanol (9370) and cyclohexanone (2670). EPR studies indicate that the hypervalent ironoxo spiecs Fe~ⅣFe~Ⅳ(?)O, derived from Fe~ⅢFe~Ⅲ core via reduction, O_2-binding and protonation, is the active intermediate which inserts the activated oxygen atom into C(?)C or C—H bond giving each product. The system closely resembles MMO and its close relative hemerythrin in the aspects of reaction phenomena, EPR characteristics and product distributions. The Mn_2 analog cmplex、Fe-Zn hetero
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Dioxygen oxidation of hydrocarbons by a methane monooxygenase-like system: diiron complex-O_2-Zn/HOA_c-MV~(2 ) |
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| WEI Junfa HE Diping. Dioxygen oxidation of hydrocarbons by a methane monooxygenase-like system: diiron complex-O_2-Zn/HOA_c-MV~(2 )[J]. Science in China(Chemistry), 1999, 0(2) |
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| Authors: | WEI Junfa HE Diping |
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| Abstract: | |
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| Keywords: | methane monooxygenase model system diiron complex biomimetic catalysis selective oxidation dioxygen activation. |
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