Selective and scalable electrosynthesis of 2H-2-(aryl)-benzo[d]-1,2,3-triazoles and their N-oxides by using leaded bronze cathodes
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Abstract
Electrosynthesis of 2H-2-(aryl)benzo[d]-1,2,3-triazoles and their N-oxides from 2-nitroazobenzene derivatives is reported. The electrolysis is conducted in a very simple undivided cell under constant current conditions with a leaded bronze cathode and a glassy carbon anode. The product distribution between 2H-2-(aryl)benzo[d]-1,2,3-triazoles and their N-oxides can be guided by simply controlling the current density and the amount of the charge applied. The reaction tolerates several sensitive functional groups in reductive electrochemistry. The usefulness and the applicability of the synthetic method is demonstrated by a formal synthesis of an antiviral compound.
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Chemistry - a European journal, 26, 25, Wiley-VCH, Weinheim, 2020, https://doi.org/10.1002/chem.201905874