Cobalt-Catalyzed Effective Access to Quinoxalines with Insights in Annulation of Terminal Alkynes and <i>o</i>-Phenylenediamines
作者:Hui-Ru Yang、Zhe-Yao Hu、Xin-Chang Li、Ling Wu、Xun-Xiang Guo
DOI:10.1021/acs.orglett.2c03465
日期:2022.11.18
demonstrated by its gram-scale and broad potential applications. Furthermore, this protocol serves as a powerful tool for the late-stage functionalization of various complex bioactive molecules and drugs to provide a new class of molecules containing two distinct bioactive molecules directly linked. Detailed mechanistic studies reveal that the current reaction goes through a novel mechanism different from
报道了一种通过使用钴催化剂和氧气作为末端氧化剂的组合来环化末端炔烃和邻苯二胺的新方法。该方法显示出广泛的底物范围和良好的官能团耐受性,并以良好到高产率提供范围广泛的喹喔啉。该方法通过其克级和广泛的潜在应用得到证明。此外,该协议可作为各种复杂生物活性分子和药物后期功能化的强大工具,以提供包含两个直接连接的不同生物活性分子的新型分子。详细的机理研究表明,当前的反应通过一种不同于先前报道的乙二醛机制的新机制。