Synthesis of optically active methylmenthoxychlorosilanes and menthyl esters of methylchlorosilylpropionic and methylchlorosilylisobutyric acids
作者:K. A. Andrianov、A. A. Mamedov、L. M. Volkova、E. I. Klabunovskii
DOI:10.1007/bf00905344
日期:1967.7
A Convergent Method for the Synthesis of Highly Enantiomerically Enriched Cyclic Silanes with Silicon-Centered Chirality
作者:Martin Oestreich、Ulrike K. Schmid、Gertrud Auer、Manfred Keller
DOI:10.1055/s-2003-42477
日期:——
1-sila-1,2,3,4-tetrahydronaphthalenes and a corresponding phenanthrene derivative. Facile large scale syntheses of 3-(2-bromoaryl)propyl bromides as well as dichlorosilanes have been elaborated. This highly convergent methodology relies on the novel (-)-menthyl-oxy-substituted dichlorosilanes, which have the chiral auxiliary for the subsequent optical resolution installed. These enantiopure dichlorosilanes
已经开发了一种制备简单的方法,该方法允许将含硅碳环组装为非对映异构体的混合物,而硅是立体信息的唯一中心。手性环状硅烷的一步构建是通过等摩尔量的二溴化物和手性改性的二氯硅烷在 Barbier 条件下反应实现的,从而可以获得几种单官能化的 1-sila-1,2,3,4-tetrahydronaphthalenes 和相应的菲衍生物. 3-(2-溴芳基)丙基溴以及二氯硅烷的简便大规模合成已经被阐述。这种高度收敛的方法依赖于新型 (-)-薄荷氧基取代的二氯硅烷,它具有手性助剂,用于随后的光学拆分。这些对映体纯二氯硅烷是对具有硅中心手性的硅烷的通用模块化一步方法的有用构建块,因为该策略避免了文献中报道的线性序列。已对 1-苯基-1-sila-1,2,3,4-四氢萘衍生物的光学分辨率进行了示例性优化,并通过 X 射线晶体学确定了绝对构型。手性助剂通过简单的还原进行立体定向置换,从而提供高度对映体富集的硅烷
Cyclic Chiral Silyl Derivatives for the Determination of the Absolute Configuration of Aliphatic Diols by Gas Chromatography
作者:Cristian Arsene、Stefan Schulz
DOI:10.1021/ol026265v
日期:2002.8.1
[reaction: see text] Chiral bidentate silyl reagents have been developed for the GC analysis of aliphatic 1,3- and 1,4-diols. These reagents react with the diols to cyclic siloxanes, which allow the determination of their enantiomeric composition even in complex mixtures. The absoluteconfiguration of 4,6-nonadecanediol 7, occurring in the lipids of sunflower pollen, has been determined to be (4S,6R)