(R)-(+)-Binol-Functionalized Mesoporous Organosilica as a Highly Efficient Pre-Chiral Catalyst for Asymmetric Catalysis
文献类型：期刊论文
| 作者 | Liu, Xiao1,2; Wang, Peiyuan1; Yang, Yan1,2; Wang, Peng1,2; Yang, Qihua1 |
| 刊名 | chemistry-an asian journal
 |
| 出版日期 | 2010 |
| 卷号 | 5期号:5页码:1232-1239 |
| 关键词 | asymmetric catalysis chirality heterogeneous catalysis mesoporous materials solvent effects |
| 英文摘要 | (r)-(+)-binol-functionalized chiral periodic mesoporous organosilicas (pmos) with different framework compositions were successfully synthesized by cocondensation of (r)-2,2'-di(methoxymethyl)oxy-6,6'-di(1-propyl-trimethoxysilyl)-1,1'-binaphthyl (bsbinol) with 1,2-bis(trimethoxysilyl)ethane (btme) and tetramethoxysilane (tmos) using triblock copolymer p123 as a template in acidic solution. the mixture of btme and bsbinol can result in a highly ordered mesostructure in an acidic medium but the mesoporous materials synthesized using a mixture of tmos and bsbinol can only be obtained in a weak acidic buffer solution. all the materials are efficient catalysts (coordinated with ti) for asymmetric addition of diethylzinc to aldehydes. the chiral pmo with ethane and (r)-(+)-binol in the framework exhibits an enantioselectivity as high as 90% with a turnover frequency (tof) of 104 h(-1), which is even higher than the homogeneous (r)-(+)-binol catalyst (83% ee with tof of 96 h(-1)) using toluene as solvent under similar conditions. this work demonstrates the positive effect of the rigid pore wall in increasing the enantioselectivity of the chiral pmos. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | schiff-base complex ; organic-synthesis ; silicas ; framework ; diethylzinc ; aldehydes ; pmos ; trans-(1r,2r)-diaminocyclohexane ; hydrogenation ; sulfoxidation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000277724800027 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141668]  |
| 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 | 1.Chinese Acad Sci Inst, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiao,Wang, Peiyuan,Yang, Yan,et al. (R)-(+)-Binol-Functionalized Mesoporous Organosilica as a Highly Efficient Pre-Chiral Catalyst for Asymmetric Catalysis[J]. chemistry-an asian journal,2010,5(5):1232-1239. |
| APA | Liu, Xiao,Wang, Peiyuan,Yang, Yan,Wang, Peng,&Yang, Qihua.(2010).(R)-(+)-Binol-Functionalized Mesoporous Organosilica as a Highly Efficient Pre-Chiral Catalyst for Asymmetric Catalysis.chemistry-an asian journal,5(5),1232-1239. |
| MLA | Liu, Xiao,et al."(R)-(+)-Binol-Functionalized Mesoporous Organosilica as a Highly Efficient Pre-Chiral Catalyst for Asymmetric Catalysis".chemistry-an asian journal 5.5(2010):1232-1239. |
入库方式： OAI收割
来源：大连化学物理研究所
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