Bioinspired Manganese Complexes and Graphene Oxide Synergistically Catalyzed Asymmetric Epoxidation of Olefins with Aqueous Hydrogen Peroxide
Bioinspired Manganese Complexes and Graphene Oxide Synergistically Catalyzed Asymmetric Epoxidation of Olefins with Aqueous Hydrogen Peroxide
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仿生锰配合物和氧化石墨烯协同催化过氧化氢水溶液中烯烃的不对称环氧化
DOI:
10.1002/adsc.201600848
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发表时间:
2017-02
影响因子:
5.4
通讯作者:
Wei Sun
中科院分区:
文献类型:
--
作者:
Chengxia Miao;Xingbin Yan;Daqian Xu;Chungu Xia;Wei Sun
Bioinspired manganese complexes of N4 ligands and graphene oxide (GO) synergistically catalyze the highly enantioselective epoxidation of olefins (up to 99% ee), which is a rare example with GO as a co-catalyst in asymmetric catalysis. GO as a new and key additive not only successfully functions in catalytic amounts, but also has a positive effect for improving the enantioselectivity of the asymmetric epoxidation compared with the traditional stoichiometric organic carboxylic acid method [e.g., chalcone, 95% ee (3.5 mg GO) vs. 84% ee (5 equiv., 75 mg acetic acid), ethyl cinnamate, 84% ee (3.5 mg GO) vs. 19% ee (5 equiv., 75 mg acetic acid)]. The X-ray photoelectron spectroscopy (XPS) spectra of GO before and after the reaction indicate that the intensities of C–O become stronger after the reaction, which may have a certain relationship with hydrogen peroxide (H2O2) and gives a reasonable rationale for the large consumption of H2O2. Also, part of the hydrogen peroxide was used for the oxidation of GO.
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影响因子:
5.2
作者:
Cusso, Olaf;Garcia-Bosch, Isaac;Costas, Miquel
通讯作者:
Costas, Miquel
影响因子:
56.9
作者:
Chen, Mark S.;White, M. Christina
通讯作者:
White, M. Christina
影响因子:
5.2
作者:
I. Garcia-Bosch;A. Company;X. Fontrodona;X. Ribas;M. Costas
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I. Garcia-Bosch;A. Company;X. Fontrodona;X. Ribas;M. Costas
影响因子:
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作者:
J. Serrano-Plana;A. Aguinaco;R. Belda;E. Garcı́a-España;M. G. Basallote;A. Company;M. Costas
通讯作者:
J. Serrano-Plana;A. Aguinaco;R. Belda;E. Garcı́a-España;M. G. Basallote;A. Company;M. Costas
影响因子:
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作者:
Bin Wang;Chengxia Miao;Shoufeng Wang;C. Xia;Wei Sun
通讯作者:
Bin Wang;Chengxia Miao;Shoufeng Wang;C. Xia;Wei Sun