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L-Prolinamide functionalized mesoporous silicas: Synthesis and catalytic performance in direct aldol reaction
Gao, Jinsuo; Liu, Jian; Jiang, Dongmei; Xiao, Bing; Yang, Qihua
关键词Mesoporous Silicas Aldol Reaction Chiral Prolinamide
刊名JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
2009-11-02
DOI10.1016/j.molcata.2009.08.005
313期:1-2页:79-87
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]ASYMMETRIC DIRECT ALDOL ; ORGANOSILICAS ; ORGANOCATALYST ; TRANS-(1R,2R)-DIAMINOCYCLOHEXANE ; KETONES
英文摘要Mesoporous silicas functionalized with the L-prolinamide group in the mesopore were synthesized by co-condensation of silicon precursors with L-prolinamide modified organosilane (PCA) in HOAc-NaOAc buffer solution (pH = 4.4) using block copolymer P123 as a template. The highly ordered 2D hexagonal mesostructure was obtained through one-pot co-condensation of tetraethoxysilane (TEOS), Na(2)SiO(3) and PCA as silicon source. The disordered foam-like mesostructure was also obtained when TEOS and PCA were used as silicon sources. In asymmetric aldol reaction of cyclohexanone with 4-niti-obenzaldehyde, the materials with highly ordered mesostructure exhibit higher enantioslectivity (91% ee) than that with disordered foam-like mesostructure (75% ee), suggesting that the ordered pore structure imparts improved enantioselectivity. The L-prolinamide functionalized materials were also synthesized by grafting PCA onto mesoporous silicas. which showed catalytic efficiencies similar to the materials synthesized by the co-condensation method. (C) 2009 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000270893600012
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141463
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
Gao, Jinsuo,Liu, Jian,Jiang, Dongmei,et al. L-Prolinamide functionalized mesoporous silicas: Synthesis and catalytic performance in direct aldol reaction[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2009,313(1-2):79-87.
APA Gao, Jinsuo,Liu, Jian,Jiang, Dongmei,Xiao, Bing,&Yang, Qihua.(2009).L-Prolinamide functionalized mesoporous silicas: Synthesis and catalytic performance in direct aldol reaction.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,313(1-2),79-87.
MLA Gao, Jinsuo,et al."L-Prolinamide functionalized mesoporous silicas: Synthesis and catalytic performance in direct aldol reaction".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 313.1-2(2009):79-87.
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