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N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russia
Nanotechnology Education and Research Center, South Ural State University, 76 Lenina Avenue, 454080 Chelyabinsk, Russia
Department of Chemistry, Moscow State University, 119899 Moscow, Russia
Author to whom correspondence should be addressed.
Molbank 2019, 2019(1), M1053;
Received: 6 March 2019 / Revised: 19 March 2019 / Accepted: 20 March 2019 / Published: 21 March 2019
(This article belongs to the Section Organic Synthesis)
PDF [353 KB, uploaded 21 March 2019]


Dihalogenated derivatives of 1,2,5-chalcogenadiazoles fused with benzene or heterocyclic rings are of interest as starting compounds for photovoltaic materials. The 1,2,5-chalcogenadiazole ring in these heterocycles was most commonly prepared from the corresponding ortho-diamine moiety. In this communication, 3,6-dibromopyridazine-4,5-diamine was prepared via the reaction of 4,7-dibromo[1,2,5]thiadiazolo[3,4-d]pyridazine with sodium methoxide in THF by heating at reflux for four hours. The structure of the newly synthesized compound was established by means of high resolution mass-spectrometry, 1H, 13C-NMR and IR spectroscopy, and mass-spectrometry. View Full-Text
Keywords: 3,6-dibromopyridazine-4,5-diamine; 1,2,5-thiadiazole; sodium methoxide; reduction 3,6-dibromopyridazine-4,5-diamine; 1,2,5-thiadiazole; sodium methoxide; reduction

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Chmovzh, T.N.; Knyazeva, E.A.; Ustimenko, O.O.; Rakitin, O.A. 3,6-Dibromopyridazine-4,5-diamine. Molbank 2019, 2019, M1053.

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