Super Silyl Stereo-Directing Groups for Complete 1,5-Syn and -Anti Stereoselectivities in the Aldol Reactions of β-Siloxy Methyl Ketones with Aldehydes
作者:Yousuke Yamaoka、Hisashi Yamamoto
DOI:10.1021/ja101076q
日期:2010.4.21
-anti stereoinduction in the aldol reaction of beta-tris(trialkylsilyl)siloxy methyl ketones can be achieved with high diastereoselectivities. Tris(trialkylsilyl)silyl groups are easily prepared and play an important role in the selectivities of these reactions. Furthermore, all of the 1,3,5-triol stereoisomers can easily be prepared from beta-siloxy methyl ketones in no more than three steps.
在这篇通讯中,我们报告了 β-三(三烷基甲硅烷基)甲硅烷氧基甲基酮的羟醛反应中的底物控制的 1,5-syn 和抗立体诱导可以以高非对映选择性实现。三(三烷基甲硅烷基)甲硅烷基很容易制备并且在这些反应的选择性中起重要作用。此外,所有 1,3,5-三醇立体异构体都可以通过不超过三个步骤从 β-甲硅烷氧基甲基酮轻松制备。