Electrochemical intramolecular N(sp2)-H/N(sp3)-H coupling for the synthesis of 1H-indazoles

GREEN CHEMISTRY(2023)

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摘要
The electrochemical synthesis of 1H-indazoles via an intramolecular N(sp(2))-H/N(sp(3))-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 and mechanistic studies support the proposed reaction mechanism for this electrochemical cyclization.
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关键词
coupling,synthesis
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