Diastereoselective silylene transfer reactions to chiral enantiopure alkenes: effects of ligand size and substrate bias.

Diastereoselective silylene transfer reactions to chiral enantiopure alkenes: effects of ligand size and substrate bias.
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非映选择性的甲硅烷基转移反应对手性对映烷烃:配体尺寸和底物偏置的影响。

DOI:
10.1039/c6dt04612f
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发表时间:
2017-07-11
期刊:
Dalton transactions (Cambridge, England : 2003)
影响因子:
--
通讯作者:
Woerpel KA
Woerpel KA
中科院分区:
其他
文献类型:
--
作者:
Rotsides CZ;Woerpel KA

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亚甲硅烷基是立体选择性合成含碳-硅键化合物的有效中间体。尽管它们的合成效用,但尚未实现其中金属催化剂上的配体控制立体选择性的对映选择性或非对映选择性金属催化的亚甲硅烷基转移反应的开发。在这篇文章中,我们报告的烯烃的结构是最重要的控制在这些反应中的立体选择性。动力学控制的硅环丙烷化反应的立体化学过程不受金属配体的性质或手性的影响。然而,当亚甲硅烷基转移反应是可逆的时,可以以高度的非对映选择性(90:10 d.r.)形成产物。
Silylenes are useful reactive intermediates for the stereoselective construction of compounds containing carbon–silicon bonds. Despite their synthetic utility, the development of either an enantioselective or diastereoselective metal-catalyzed silylene transfer reaction in which ligands on the metal catalyst control stereoselectivity has not been achieved. In this article, we report that the structure of the alkene is most important for controlling stereoselectivity in these reactions. The stereochemical course of kinetically controlled silacyclopropanation reactions was not affected by the nature or chirality of the ligands on the metal. When silylene transfer reactions were reversible, however, products can be formed with a high degree of diastereoselectivity (90:10 d.r.).
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发表时间: 1996-01-29
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影响因子: 2.1
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