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学科主题: 金属有机化学
题名: Highly efficient enantioselective epoxidation of α,β-enones catlyzed by cheap chiral lanthanum and gadolinium alkoxides
其他题名: 便宜的手性镧和钆烷氧基化合物催化的α,β-不饱和酮的高效不对称环氧化反应
作者: Chen RF(陈瑞芳) ; Qian ZT(钱长涛) ; Johannes G. De Vries
通讯作者: 钱长涛
刊名: Tetrahedron
发表日期: 2001-01-01
卷: 57, 期:49, 页:9837-9842
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所金属有机化学开放实验室; 荷兰DSM公司
英文摘要: (S)-6,6'-Dibromo-BINOL and (S)-6,6'-dihenyl-BINOL have been developed as efficient chiral ligands applicable to lanthanoid catalyzed asymmetric epoxidation of α,β -unsaturated ketones in the presence of cumene hydroperoxide. Excellent chemical yield and enantioselectivity have been achieved for several epoxides at room temperature by using 5 mol% of La(O-iPr)^3-(S)-6,6'-dibromo-BINOL and Gd(O-iPr)^3-(S)-6,6'-diphenyl-BINOL, respectively. Up to 95% ee was obtained for epoxychalcone with Gd(O-I-Pr)^3(S)-6,6'-diphenyl-BINOL catalyst at room temperature. A plausibel catalyst structure as well as the catalytic cycle has also been sugested.
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/15231
Appears in Collections:金属有机化学国家重点实验室_期刊论文

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Recommended Citation:
Chen RF,Qian ZT,Johannes G. De Vries. Highly efficient enantioselective epoxidation of α,β-enones catlyzed by cheap chiral lanthanum and gadolinium alkoxides[J]. Tetrahedron,2001,57(49):9837-9842.
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