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学科主题: 金属有机化学
题名: PPh3-catalyzed ylide cyclization for the controllable synthesis of benzobicyclo[4.3.0] compounds: base effects and scope
其他题名: PPh3-catalyzed ylide cyclization for the controllable synthesis of benzobicyclo[4.3.0] compounds: base effects and scope
作者: Ye LW(叶龙武) ; Han X(韩讯) ; Sun XL(孙秀丽) ; Tang Y(唐勇)
通讯作者: 唐勇
刊名: Tetrahedron
发表日期: 2008
卷: 64, 期:7, 页:1487-1493
收录类别: SCI
部门归属: 上海有机所
英文摘要: A catalytic intramolecular ylide annulation for the controllable construction of benzobicyclo[4.3.0] ring systems with three continuous stereogenic centers is developed in a single manipulation. In the presence of 20 mol % of triphenylphosphine, the reactions of compounds 1a-1f afford benzobicyclo[4.3.0] compounds 3 and 4 as major products, respectively, with excellent diastereoselectivities in good to excellent yields, depending on the base used. In addition, 2-methyl alpha,beta-unsaturated esters 2a-2c also work well to give the corresponding benzobicyclo[4.3.0] compounds with one quaternary carbon center with high diastereoselectivities in good yields under the same conditions. (c) 2007 Elsevier Ltd. All rights reserved.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000253280200038
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/19351
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:
Ye LW,Han X,Sun XL,et al. PPh3-catalyzed ylide cyclization for the controllable synthesis of benzobicyclo[4.3.0] compounds: base effects and scope[J]. Tetrahedron,2008,64(7):1487-1493.
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