作者:Christie Morrill、Robert H. Grubbs
DOI:10.1021/ja044054a
日期:2005.3.9
strategies are developed to promote the highly selective 1,3-isomerization of a variety of allylic alcohols using O3ReOSiPh3 as a catalyst. The first strategy utilizes substrates whose 1,3-regioisomer contains a conjugated alkene, which relies on thermodynamics to obtain high selectivity. The second strategy employs N,O-bis(trimethylsilyl)acetamide as an additive to selectively and irreversibly remove the product
开发了两种反应策略,以使用 O3ReOSiPh3 作为催化剂促进各种烯丙醇的高选择性 1,3-异构化。第一种策略利用其 1,3-区域异构体包含共轭烯烃的底物,这依赖于热力学来获得高选择性。第二种策略使用 N,O-双(三甲基甲硅烷基)乙酰胺作为添加剂,以选择性和不可逆地从反应平衡中去除产物,并且适用于将叔烯丙醇异构化为含有三取代烯烃组分的伯烯丙醇。在对映体富集的烯丙醇的 1,3-异构化中也观察到了高立体选择性。