Tandem Synthesis of 2-Carboxybenzofurans <i>via</i> Sequential Cu-Catalyzed C–O Coupling and Mo(CO)<sub>6</sub>-Mediated Carbonylation Reactions
作者:Qinliang Mo、Nan Sun、Liqun Jin、Baoxiang Hu、Zhenlu Shen、Xinquan Hu
DOI:10.1021/acs.joc.0c01620
日期:2020.9.4
A modular tandem synthesis of 2-carboxybenzofurans from 2-gem-dibromovinylphenols has been established based on a sequence of Cu-catalyzed intramolecular C–O coupling and Mo(CO)6-mediated intermolecular carbonylation reactions. This protocol allowed one-step access to a broad variety of functionalized benzofuran-2-carboxylic acids, esters, and amides in good to excellent yields under Pd- and CO gas-free
由2- 2-羧基苯并呋喃的模块化串联合成宝石-dibromovinylphenols已经基于Cu催化的分子内CO耦合和Mo(CO)的序列被建立6个介导的分子间羰基化反应。该方案允许在无Pd和CO气体条件下以良好至极佳的收率一步一步获得各种官能化的苯并呋喃-2-羧酸,酯和酰胺。