3,6-Dibromopyridazine-4,5-diamine
Keyword(s):
13C Nmr
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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.
High resolution mass spectrometry. Part IX. 2-Spiro-2′-(1′,3′-dithian) derivatives of 3-oxo-steroids
1971 ◽
Vol 0
(0)
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pp. 19-23
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2018 ◽
Vol 410
(22)
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pp. 5583-5592
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