Chirally Functionalized Hollow Nanospheres Containing L-Prolinamide: Synthesis and Asymmetric Catalysis
文献类型：期刊论文
| 作者 | Gao, Jinsuo; Liu, Jian; Tang, Jianting; Jiang, Dongmei; Li, Bo; Yang, Qihua |
| 刊名 | chemistry-a european journal
 |
| 出版日期 | 2010 |
| 卷号 | 16期号:26页码:7852-7858 |
| 关键词 | aldol reaction heterogeneous catalysis nanostructures organocatalysis prolinamide |
| 产权排序 | 1;1 |
| 通讯作者 | 杨启华 |
| 英文摘要 | chirally functionalized hollow nanospheres with different surface properties were successfully synthesized by co-condensation of (2s,1'r,2'r)-n-tert-butyloxycarbonylpyrrolidine-2-carboxylic acid [2'-(4-trimethoxysilylbenzylamide)cyclohexyl] amide with 1,2-bis(trimethoxysilyl)ethane or tetramethoxysilane using f127 (eo(106)po(70)eo(106)) as surfactant in water. the tem and n(2) sorption characterizations show that the particle size of the hollow nanosphere is 15-21 nm with a core diameter of 10-16 nm. these l-prolinamide-functionalized hollow nanospheres are highly efficient solid catalysts for the direct asymmetric aldol reaction between cyclohexanone and aromatic aldehydes. it was found that the addition of water in the reaction system not only enhanced the catalytic activity but also increased the enantioselectivity, which is probably due to the enhanced hydrogen bond between the amide oxygen atom and the hydroxyl group of water. moreover, the catalytic activity increases sharply as the surface hydrophobicity of the hollow nanospheres increases. these hollow nanospheres are quite stable and can be reused with almost the same enantioselectivity and only a slight decrease in catalytic activity. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | periodic mesoporous organosilica ; sulfonic-acid functionalization ; direct aldol reactions ; stereoselective catalysts ; recyclable organocatalyst ; mcm-41-type silica ; combined alkyl ; spheres ; water ; polystyrene |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000280431900026 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/103183]  |
| 专题 | 大连化学物理研究所_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 |
| 推荐引用方式 GB/T 7714 | Gao, Jinsuo,Liu, Jian,Tang, Jianting,et al. Chirally Functionalized Hollow Nanospheres Containing L-Prolinamide: Synthesis and Asymmetric Catalysis[J]. chemistry-a european journal,2010,16(26):7852-7858. |
| APA | Gao, Jinsuo,Liu, Jian,Tang, Jianting,Jiang, Dongmei,Li, Bo,&Yang, Qihua.(2010).Chirally Functionalized Hollow Nanospheres Containing L-Prolinamide: Synthesis and Asymmetric Catalysis.chemistry-a european journal,16(26),7852-7858. |
| MLA | Gao, Jinsuo,et al."Chirally Functionalized Hollow Nanospheres Containing L-Prolinamide: Synthesis and Asymmetric Catalysis".chemistry-a european journal 16.26(2010):7852-7858. |
入库方式： OAI收割
来源：大连化学物理研究所
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