Copper‐Catalyzed Aerobic Oxidative Cyclization Cascade to Construct Bridged Skeletons: Total Synthesis of (−)‐Suaveoline
作者:Qiuyuan Tan、Zhao Yang、Dan Jiang、Yuegang Cheng、Jiao Yang、Song Xi、Min Zhang
DOI:10.1002/anie.201902155
日期:2019.5.6
cyclopropanol ring‐opening addition to iminium ions, an unprecedented catalytic aerobic C−H oxidation/cyclopropanol cyclization cascade using CuCl2 as the multifunctional catalyst and air as the oxidant was developed to construct the azabicyclo[3.3.1]nonane skeleton, which is widespread in natural products and medicines. Using this method, concise asymmetric total synthesis of the indole alkaloid (−)‐suaveoline
基于发现亚铜离子中铜催化的环丙醇开环加成反应的发现,开发了前所未有的催化好氧CH-H氧化/环丙醇环化级联反应,以CuCl 2为多功能催化剂,空气为氧化剂,构建了氮杂双环[3.3。 1]壬烷骨架,广泛存在于天然产物和药物中。使用这种方法,可以实现简明不对称的吲哚生物碱(-)-樟脑碱的全合成。这项研究不仅为构建这种桥接框架提供了一种高效,低成本和环境友好的方法,而且丰富了环丙醇化学和CH功能化的领域。