The use of α-cationic phosphonites derived from TADDOL as ancillary ligands has allowed a highly regio- and enantioselective synthesis of substituted [6]carbohelicenes by sequential Au-catalyzed intramolecular hydroarylation of diynes. Key for these results is the modular structure of these new ligands, and the enhanced reactivity that they impart to Au(I)-centers after coordination.
使用衍生自 TADDOL 的 α-阳离子
亚膦酸酯作为辅助
配体,允许通过连续 Au 催化的二炔分子内加氢芳基化来高度区域和对映选择性合成取代的 [6] 碳螺旋。这些结果的关键是这些新
配体的模块化结构,以及它们在配位后赋予 Au(I) 中心增强的反应性。