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

Autor:	Timofey N. Chmovzh, Karim S. Gaisin, Oleg A. Rakitin
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	[1 2 5]oxadiazolo[3 4-d]pyridazines ring closure 5 6-dihydro-[1 2 5]oxadiazolo[3 4-d]pyridazine-4 7-dione Inorganic chemistry QD146-197
Zdroj:	Molbank, Vol 2023, Iss 2, p M1649 (2023)
Druh dokumentu:	article
ISSN:	1422-8599
DOI:	10.3390/M1649
Popis:	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.
Databáze:	Directory of Open Access Journals
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