We present here a rhodium-catalyzed oxidative three-point double annulation of enaminones with propargylic alcohols via a C–H and a C–N bond activation to access arylnaphthalene-based lignan derivatives. The key step in the reaction is the regioselective insertion of propargylic alcohol into the rhoda-cycle, a result of hydroxyl rhodium coordination. Necessary control experiments and KIE studies were
我们在此展示了一种铑催化的烯胺酮与炔丙醇的氧化三点双环化反应,通过 C-H 和 C-N 键活化获得基于芳基萘的木脂素衍生物。该反应的关键步骤是将炔丙醇区域选择性地插入到铑环中,这是羟基铑配位的结果。进行了必要的对照实验和 KIE 研究以确定机制。
Rhodium-Catalyzed Annulation of Phenacyl Ammonium Salts with Propargylic Alcohols via a Sequential Dual C–H and a C–C Bond Activation: Modular Entry to Diverse Isochromenones