Studies on diazepines. XIII. Photochemical behavior of pyrazine, pyrimidine, and pyridazine N-imides was written by Tsuchiya, Takashi;Kurita, Jyoji;Takayama, Kazuko. And the article was included in Chemical & Pharmaceutical Bulletin in 1980.Formula: C5H6N2O This article mentions the following:
Photolysis of various diazine N-ethoxycarbonylimides, I (R = H, Me; R1, R2 = H, Me, Ph), II, and III (R3 = R4 = H, Me; R3 = MeO, R4 = H) prepared from the corresponding diazines, gave the pyrazole derivatives, e.g. IV from pyrazine and pyridmidine N-imides, and the pyrrole derivatives from pyridazine N-imides. These photolyses may proceed by rearrangement to diaziridine intermediates, followed by ring expansion to the corresponding 1,2,5-, 1,2,4-, or 1,2,3-triazepines, which then undergo isomerization to the triazabicyclo[3.2.0]heptadienes, followed by elimination. In the experiment, the researchers used many compounds, for example, 3-Methoxypyridazine (cas: 19064-65-4Formula: C5H6N2O).
3-Methoxypyridazine (cas: 19064-65-4) belongs to pyridazine derivatives. Pyridazines is a six-membered nitrogen-containing significant heterocycle. It has received considerable interest because of its useful applications as natural products, pharmaceuticals, and various bioactive molecules. Pyridazine compounds have attracted interest in various fields like medicinal, industrial, and agricultural research as they are used for numerous biological activities and other applications.Formula: C5H6N2O
Referemce:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem