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学科主题: 金属有机化学
题名: Backebone effect of MAP ligands on their coordination patterns with palladium(II)
其他题名: MAP配体的骨架对其与Pd(II)配位模式的影响
作者: Wang Y(王以) ; Li H(李欢) ; Sun J(孙杰) ; Ding KL(丁奎岭)
通讯作者: 丁奎岭
刊名: Organometallics
发表日期: 2003-01-01
卷: 22, 期:9, 页:1856-1862
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
英文摘要: The allvlpalladium complexes ?-4 and ?-5 of chiral P. N auxiliaries ?-1 and ?-3 have been prenared. The X-ray structures of the complexes have been determined, and the results clearly show that two different chelating modes (P, N vs P, Cσ) are involved. The coordination patterns of donating atoms were dependent on the binaphthyl backbone of the chiral ligands. The isodesymmetrization revealed that the reactiorn occurs without regio-_ chemical memory effect, which demonstrates a full dynamic equilibrium has been attained before nucleophilic attack. These resuLts, combined with the solution behavlors of the comnlexes revealed by NMR studies, provided a further understanding of their asymmetric induction in allvlic substitution of l,3-diphenylprop-2-en-l-yl acetate with dimethy_malonate_. The dramatic enhancement of enantioselectivity with ?-3 as a chiral inducer can be related to the different chelating mode of catalyst ?-5 from that of ?-4. The change of bite angles of the two donors with paIladiunl in the complexes ?-4 and ?-5 was considered as a direct reason for their dramatically different enanatioselectivities in the catalysis.
语种: 英语
相关网址: 查看原文
内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/17757
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:
Wang Y,Li H,Sun J,et al. Backebone effect of MAP ligands on their coordination patterns with palladium(II)[J]. Organometallics,2003,22(9):1856-1862.
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