Phosphinite Thioethers Derived from Chiral Epoxides. Modular <i>P</i>,<i>S</i>-Ligands for Pd-Catalyzed Asymmetric Allylic Substitutions
作者:Xisco Caldentey、Miquel A. Pericàs
DOI:10.1021/jo100223w
日期:2010.4.16
prepared from enantiopure arylglycidols. These ligands have been iteratively optimized with respect to four different structural parameters for use in Pd-catalyzed allylic substitutions. As a final output, highly active and enantioselective ligands for these synthetically important transformations have been developed, and the factors controlling their catalytic behavior have been rationalized. From a methodological
从对映体纯的芳基糖醇制备了新的模块化P,S-配体家族。这些配体已经针对用于Pd催化的烯丙基取代的四个不同的结构参数进行了迭代优化。作为最终产物,已经开发了用于这些合成上重要的转化的高活性和对映选择性配体,并且已经合理地控制了它们的催化行为的因素。从方法学的观点出发,已经开发了一种方便的方法,用于用大体积的硫醇对顺式-缩水甘油酯进行区域选择性开环,以产生相应的β-烷硫基-α-羟基羧酸。