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题名: Asymmetric hydrogenation in nanoreactors with encapsulated Rh-MonoPhos catalyst
作者: Zhong, Mingmei1, 2;  Zhang, Xiaoming1, 2;  Zhao, Yaopeng1;  Li, Can1;  Yang, Qihua1
刊名: GREEN CHEMISTRY
发表日期: 2015
DOI: 10.1039/c4gc01767f
卷: 17, 期:3, 页:1702-1709
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The asymmetric multicomponent catalyst, Rh-MonoPhos, was successfully encapsulated in the nanocages of mesoporous silicas with cage-like structure (FDU-12 and C-FDU-12). The resulting solid catalyst exhibits excellent activity (TOF 2052 h(-1)) and enantioselectivity (93% ee) in the asymmetric hydrogenation of olefin derivatives. The solid catalyst with Rh(MonoPhos)(2) in nanocages affords considerably higher activity than that with Rh(MonoPhos)(1) or Rh(MonoPhos)(3) in nanocages. Combined with the ESI-MS results, it could be supposed that RhL2(nbd) may be active species or the precursors for active species. Moreover, the solid catalyst with C-FDU-12 (inner surface modified by a thin carbon layer) as host material shows considerably higher activity and enantioselectivity than that with pure silica FDU-12 as host material in the asymmetric hydrogenation of different types of olefin derivatives, indicating that the microenvironment modification is one of the key factors for improving the catalytic performance of the solid catalyst. The solid catalysts possess high stability and could be reused for at least 7 times.
关键词[WOS]: ENANTIOSELECTIVE CARBONYL-ENE ;  PHOSPHORUS LIGANDS ;  IMMOBILIZATION ;  SILICAS ;  COMPLEXES ;  POLYMER
语种: 英语
WOS记录号: WOS:000351091300043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146074
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zhong, Mingmei,Zhang, Xiaoming,Zhao, Yaopeng,et al. Asymmetric hydrogenation in nanoreactors with encapsulated Rh-MonoPhos catalyst[J]. GREEN CHEMISTRY,2015,17(3):1702-1709.
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