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Periodic mesoporous organosilicas with trans-(1R,2R)-diaminocyclohexane in the framework: A potential catalytic material for asymmetric reactions
Jiang, DM; Yang, QH; Wang, H; Zhu, GR; Yang, J; Li, C
关键词Periodic Mesoporous Organosilicas Chirality Diaminocyclohexane Asymmetric Transfer Hydrogenation Of Ketones
刊名JOURNAL OF CATALYSIS
2006-04-01
DOI10.1016/j.jcat.2006.01.018
239期:1页:65-73
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]CHIRAL CATALYSTS ; MOLECULAR-SIEVES ; ORGANIC GROUPS ; MCM-41 ; LIGANDS ; SILICA ; CHIMO ; OXIDE
英文摘要With benzyl group as a linker, trans-(1 R,2 R)-diaminocyclohexane was incorporated into the framework of mesoporous silica through one-step co-condensation of tetramethoxysilane with N.N'-bis[4-(trimethoethoxysilyl)benzyl]-(-)-(1R,2R)-diaminocyclohexane using cetyltrimethylammonium bromide as a structure-directing agent under basic conditions. All materials were fully characterized by X-ray diffraction. N(2) sorption isotherms, transmission electron microscopy, and (13)C and (29)Si cross-polarization magic-angle spinning nuclear magnetic resonance spectroscopy. Coordinated with [Rh(cod)Cl](2,) the material exhibited a TOF Lip to similar to 414 h(-1) with 30% ee for the asymmetric transfer hydrogenation of acetophenone. Various ketones were hydrogenated with different activities and enantioselectivities. An enantioselectivity of about 61% ee was observed in the case of 2-acetylnaphthalene. Moreover, a comparison of the catalytic properties of the materials with benzyl and propyl groups as linkers indicates the importance of the rigidity and electron-withdrawing ability of the linker in the high reaction rate of the catalysts. (c) 2006 Elsevier Inc. All rights reserved.
语种英语
WOS记录号WOS:000236419800007
引用统计
被引频次:64[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140129
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Jiang, DM,Yang, QH,Wang, H,et al. Periodic mesoporous organosilicas with trans-(1R,2R)-diaminocyclohexane in the framework: A potential catalytic material for asymmetric reactions[J]. JOURNAL OF CATALYSIS,2006,239(1):65-73.
APA Jiang, DM,Yang, QH,Wang, H,Zhu, GR,Yang, J,&Li, C.(2006).Periodic mesoporous organosilicas with trans-(1R,2R)-diaminocyclohexane in the framework: A potential catalytic material for asymmetric reactions.JOURNAL OF CATALYSIS,239(1),65-73.
MLA Jiang, DM,et al."Periodic mesoporous organosilicas with trans-(1R,2R)-diaminocyclohexane in the framework: A potential catalytic material for asymmetric reactions".JOURNAL OF CATALYSIS 239.1(2006):65-73.
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