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题名: Heterogeneous asymmetric hydroformylation of olefins on chirally modified Rh/SiO2 catalysts
作者: Han, Difei;  Li, Xiaohong;  Zhang, Huidong;  Liu, Zhimin;  Li, Jun;  Li, Can
通讯作者: 李灿
关键词: heterogeneous catalysis ;  enantioselective hydroformylation ;  chiral modification ;  coordination ;  phosphorus ligands
刊名: JOURNAL OF CATALYSIS
发表日期: 2006-10-25
DOI: 10.1016/j.jcat.2006.08.003
卷: 243, 期:2, 页:318-328
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Heterogeneous chiral catalysts were prepared by modifying silica-supported rhodium (Rh/SiO2) with chiral phosphorus ligands. The chirally modified Rh/SiO2 catalysts exhibited high activity, regioselectivity, and enantioselectivity for the asymmetric hydroformylation of styrene and vinyl acetate. Up to 72% ee and 100% selectivity of branched aldehyde for the hydroformylation of vinyl acetate were obtained for (R)-BINAPRh/SiO2 catalysts. It is noteworthy that the modification of Rh/SiO2 with (S,S)-DIOP resulted in increased activity for the hydroformylation of vinyl acetate and gave a TOF of 128 h(-1), even higher than that of the unmodified Rh/SiO2 catalyst (90 h(-1)). It is found that chiral modifiers with bidentate phosphines and an optimized modifier/rhodium molar ratio close to 1.0 were prerequisites for chiral induction on the chirally modified catalysts. P-31 MAS NMR results and IR spectra of adsorbed CO indicated that the chiral modification via the coordination of phosphines to rhodium produces chirally active sites on the Rh/SiO2 catalysts. (c) 2006 Elsevier Inc. All rights reserved.
关键词[WOS]: ENANTIOSELECTIVE HYDROGENATION ;  ALPHA-KETOESTERS ;  VINYL-ACETATE ;  RHODIUM ;  COMPLEXES ;  NANOPARTICLES ;  ASSEMBLIES ;  KETONES ;  BINAP
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000241591900011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98243
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

Recommended Citation:
Han, Difei,Li, Xiaohong,Zhang, Huidong,et al. Heterogeneous asymmetric hydroformylation of olefins on chirally modified Rh/SiO2 catalysts[J]. JOURNAL OF CATALYSIS,2006,243(2):318-328.
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