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学科主题: 金属有机化学
题名: Carbon-Carbon Bond Formation of alpha-Alkynylzirconacyclopentenes via Cyclization or a Cu/Pd-Mediated Cyclization/Cross-Coupling Sequence with Aryl Iodides
其他题名: α-位炔基取代的锆杂环戊烯的碳-碳键形成反应:Cu/Pd促进的环化及与芳基碘化物的环化偶联反应研究
作者: Chen JJ(陈敬金) ; Li YX(李玉学) ; Gao HJ(高红军) ; Liu YH(刘元红)
通讯作者: 刘元红
刊名: Organometallics
发表日期: 2008
卷: 27, 期:21, 页:5619-5623
收录类别: SCI
部门归属: 上海有机所
英文摘要: The cyclization of alpha-alkynylzirconacyclopentenes in the presence of CuCl was achieved cleanly to afford stereodefined 3-ylidenecyclopentenes. Coupling of the copper intermediates with a variety of aryl iodides catalyzed by Pd(PPh3)(4) afforded bis-arylated ylidenecyclopentenes; however, in the absence of copper salts, the coupling reaction of the same zirconacycles with aryl iodides was efficiently promoted by Pd(OAc)(2)/PPh3 in toluene to afford the monoarylated products. Activation of the central double bond of the cumulenic intermediate by a Pd(II) complex followed by nucleophilic attack of the Zr-sp(3) carbon bond to form an alkenylpalladium intermediate accounting for this novel cyclization is suggested.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000260383900029
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/24257
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 JJ,Li YX,Gao HJ,et al. Carbon-Carbon Bond Formation of alpha-Alkynylzirconacyclopentenes via Cyclization or a Cu/Pd-Mediated Cyclization/Cross-Coupling Sequence with Aryl Iodides[J]. Organometallics,2008,27(21):5619-5623.
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