A dynamic kinetic asymmetric transformation (DYKAT) technique has been designed for the synthesis of 2'-substituted 2-aryl pyridines/isoquinolines and related heterobiaryls. In this way, the Pd(0)-catalyzed coupling of racemic 2-triflates with aryl boroxines using a TADDOL-derived phosphoramidite as the ligand provides the corresponding coupling products with good to excellent enantioselectivities
动态动力学不对称转化 (DYKAT) 技术已被设计用于合成 2'-取代的 2-芳基
吡啶/
异喹啉和相关的杂二芳基。通过这种方式,使用 TADDOL 衍生的亚
磷酰胺作为
配体,Pd(0) 催化的外消旋 2-
三氟甲磺酸酯与芳基环
硼烷的偶联提供了相应的偶联产物,具有良好到优异的对映选择性。结构研究支持构型不稳定的氧化加成
钯环的形成是该方法成功的关键。