Electrochemical intramolecular N(sp<sup>2</sup>)–H/N(sp<sup>3</sup>)–H coupling for the synthesis of 1<i>H</i>-indazoles
作者:Qiang Zhong、Pei-Long Wang、Hui Gao、Fang Ma、Youqing Yang、Hongji Li
DOI:10.1039/d3gc00380a
日期:——
The electrochemical synthesis of 1H-indazoles via an intramolecular N(sp2)–H/N(sp3)–H coupling reaction at room temperature is first described. The transition metal-free electrochemical cyclization features the use of commercially available NH3 as the nitrogen source and a broad substrate scope, thus affording a wide range of substituted 1H-indazoles in moderate to good yields. Both the control experiments