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Paper | Regular issue | Vol 48, No. 5, 1998, pp.929-938
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8116
1-Arylamino-1H-imidazoles by "Oxidative Reduction" --- Conversion of 1-Arylamino-2,3-dihydro-1H-imidazole-2-thiones

Joachim G. Schantl* and Irene M. Lagoja

*Institut für Organische Chemie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria


Desulfurization of the thione function of N-arylthiosemicarbazides incorporated in a heterocyclic ring was achieved with 30% hydrogen peroxide in acetic acid. This reagent proved superior for the title transformation of thiones (1) into 2-unsubstituted 1H-imidazoles (5). In addition, structurally related substrates were also subjected to this procedure.