Carboazidation of Chiral Allylsilanes: Experimental and Theoretical Investigations
作者:Laurent Chabaud、Yannick Landais、Philippe Renaud、Frédéric Robert、Frédéric Castet、Marco Lucarini、Kurt Schenk
DOI:10.1002/chem.200701401
日期:2008.3.17
The carboazidation of chiral allylsilanes has been investigated by varying the nature of the substituents at the silicon center and on the carbon framework. The influence of temperature and the nature of the sulfonyl azide, as well as the stereochemistry of the remote stereogenic center, on the 1,2-diastereocontrol of the process were considered. Good to excellent levels of diastereocontrol were generally
通过改变硅中心和碳骨架上取代基的性质,研究了手性烯丙基硅烷的碳叠氮化。考虑了温度和磺酰叠氮化物的性质以及偏远的立体生成中心的立体化学对过程的1,2-非对映体控制的影响。通常观察到良好至优异的非对映异构控制水平,其中总是形成顺-β-叠氮基硅烷作为主要异构体。通过短而有效地合成粟精胺类似物提供了这种方法的价值的例证。EPR光谱学是在各种β-甲硅烷基上进行的,提供了有关其基态构象的有用信息。根据这些实验证据和DFT计算,