5,6-Dihydro-[1,2,5]oxadiazolo[3,4-d]pyridazine-4,7-dione

1,2,5-Chalcogenadiazoles fused with electron-withdrawing heterocycles have been actively investigated for the preparation of organic photovoltaic materials. [1,2,5]Oxadiazolo[3,4-d]pyridazines are much less studied than other chalcogenadiazolopyridazines due to their low availability. In this commun...

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Bibliographic Details
Published inMolBank Vol. 2023; no. 2; p. M1649
Main Authors Chmovzh, Timofey N., Gaisin, Karim S., Rakitin, Oleg A.
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2023
Subjects
5,6-dihydro-[1,2,5]oxadiazolo[3,4-d]pyridazine-4,7-dione
[1,2,5]oxadiazolo[3,4-d]pyridazines
Analysis
Chemical analysis
Chemical synthesis
Chromatography
Conflicts of interest
Hydrochloric acid
Identification and classification
Infrared spectroscopy
Ions
Mass spectrometry
Methods
NMR
Nuclear magnetic resonance
Nuclear magnetic resonance spectroscopy
Pyridazine
Pyridazines
ring closure
Scientific imaging
Structure
Russia
United States > US
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Summary:1,2,5-Chalcogenadiazoles fused with electron-withdrawing heterocycles have been actively investigated for the preparation of organic photovoltaic materials. [1,2,5]Oxadiazolo[3,4-d]pyridazines are much less studied than other chalcogenadiazolopyridazines due to their low availability. In this communication, we report our study showing that 5,6-dihydro-[1,2,5]oxadiazolo[3,4-d]pyridazine-4,7-dione, a key precursor for the synthesis of 4,7-dihalo-[1,2,5]oxadiazolo[3,4-d]pyridazines, is formed via the cyclization of 1,2,5-oxadiazole-3,4-dicarbohydrazide in hydrochloric acid. The structure of the newly synthesized compound was established by means of elemental analysis; high-resolution mass spectrometry; 1H and 13C NMR; IR spectroscopy, and mass spectrometry.
ISSN:1422-8599
1422-8599
DOI:10.3390/M1649