Asymmetric epoxidation of 6-cyano-2,2-dimethylchromene on Mn(salen) catalyst immobilized in mesoporous materials
文献类型：期刊论文
| 作者 | Zhang, H; Li, C |
| 刊名 | tetrahedron
 |
| 出版日期 | 2006-07-12 |
| 卷号 | 62期号:28页码:6640-6649 |
| 关键词 | heterogeneous chiral catalysis asymmetric epoxidation Mn(salen) confinement effect nanopore enantioselective |
| 英文摘要 | this article reports our recent work on the heterogeneous asymmetric epoxidation catalyzed by chiral mn(salen) catalyst axially immobilized via phenoxyl groups and organic sulfonic groups. the asymmetric epoxidation of 6-cyano-2,2-dimethylchromene was especially presented in detail. the factors that affected the asymmetric induction, such as the nanopores and the external surface, the linkage length, and the modification of nanopores with methyl groups were discussed. it was found that the enantioselectivities increased with decreasing the nanopore sizes or increasing the linkage length in nanopore, and the mn(salen) catalyst immobilized into nanopores generally gave higher ee values than those on the external surface. the heterogeneous mn(salen) catalysts with modified nanopores gave a tof of 14.8 h(-1) and an ee value of 90.6% for the asymmetric epoxidation of 6-eyano-2,2-dimethylchromene, which were higher than the results (tof 10.8 h(-1), ee 80.1%) obtained for the homogeneous catalyst. (c) 2006 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, organic |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | heterogeneous enantioselective catalyst ; schiff-base complex ; salen complexes ; unfunctionalized olefins ; nonfunctionalized alkenes ; hydrogen-peroxide ; chiral catalysts ; porous materials ; zeolite-y ; mcm-41 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000238643500006 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/139972]  |
| 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 | Zhang, H,Li, C. Asymmetric epoxidation of 6-cyano-2,2-dimethylchromene on Mn(salen) catalyst immobilized in mesoporous materials[J]. tetrahedron,2006,62(28):6640-6649. |
| APA | Zhang, H,&Li, C.(2006).Asymmetric epoxidation of 6-cyano-2,2-dimethylchromene on Mn(salen) catalyst immobilized in mesoporous materials.tetrahedron,62(28),6640-6649. |
| MLA | Zhang, H,et al."Asymmetric epoxidation of 6-cyano-2,2-dimethylchromene on Mn(salen) catalyst immobilized in mesoporous materials".tetrahedron 62.28(2006):6640-6649. |
入库方式： OAI收割
来源：大连化学物理研究所
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