bond-forming reactions to N-heterocyclic frameworks has been a long-standing interest in organic synthesis. In this work, we develop an electrochemical radical Csp2–H/N–H cyclization of arylhydrazones to 1H-indazoles. The electrochemical anodic oxidation approach was adopted to synthesize a variety of 1H-indazole derivatives in moderate to good yields. HFIP was not only employed as a solvent or the proton donor
对 N-杂环骨架进行高效且可持续的 C-N 键形成反应一直是有机合成领域的长期兴趣。在这项工作中,我们开发了芳基腙到 1 H-
吲唑的电
化学自由基 C sp 2 -H/N-H 环化。采用电
化学阳极氧化方法合成了多种1 H-
吲唑衍
生物,产率中等至较好。HFIP不仅用作溶剂或质子供体,而且可以促进N自由基的形成。这种合成方法操作简单,较便宜的电极适用于这种
化学。