The Use of pH to Influence Regio- and Chemoselectivity in the Asymmetric Aminohydroxylation of Styrenes
作者:Vitaliy Nesterenko、Joshua T. Byers、Paul J. Hergenrother
DOI:10.1021/ol027242j
日期:2003.2.1
[reaction: see text] The pH-controlled Sharpless asymmetric aminohydroxylation (AA) of styrenes provides 1-aryl-2-amino ethanols (regioisomer B) with high enantio-, chemo-, and regioselectivity. As existing AA protocols typically give regioisomer A as the major reaction product when using carbamate nitrogen sources, this method is a convenient alternative for the selective production of regioisomer
[反应:见正文]苯乙烯的pH值控制的Sharpless不对称氨基羟基化(AA)可提供具有高对映,化学和区域选择性的1-芳基-2-氨基乙醇(区域异构体B)。由于现有的AA方案通常在使用氨基甲酸酯氮源时将区域异构体A作为主要反应产物,因此该方法是选择性生产区域异构体B的便捷替代方法。