Palladium-Catalyzed Chemo- and Enantioselective Oxidation of Allylic Esters and Carbonates
作者:Barry M. Trost、Jeffery Richardson、Kelvin Yong
DOI:10.1021/ja057163d
日期:2006.3.1
oxidation of allylic esters and carbonates using a novel potassium nitronate has been developed. This method is highly chemoselective, leaving other esters, alcohols, thioethers, and amines undisturbed. The oxidation can be operated in two modes: an achiral mode, using either PPh3 or rac-2 as ligand, or a chiral and highly enantioselective mode, using 2 as ligand. The oxidative enantioselective desymmetrization
已经开发了使用新型硝酸钾的钯催化氧化烯丙酯和碳酸酯。该方法具有高度化学选择性,不会干扰其他酯、醇、硫醚和胺。氧化可以以两种模式进行:非手性模式,使用 PPh3 或 rac-2 作为配体,或手性和高度对映选择性模式,使用 2 作为配体。与其他策略相比,内消旋双酯的氧化对映选择性去对称化提供了一种明显更短的方法来获得常用的合成中间体。使用这种方法也可以实现高效的动力学拆分。