Kramberger, L. published the artcileHeterocycles. CXXVII. Action of sulfur on some heterocyclic compounds. Formation of thioamides, oxidative cyclization and thiation, Quality Control of 2215-33-0, the publication is Journal of Heterocyclic Chemistry (1975), 12(2), 337-42, database is CAplus.
The formation of heterocyclic thioamides from alkylpyridines, heteroaromatic amines and sulfur was investigated. Oxidative cyclization of these thioamides afforded the corresponding thiazoloazines. Attempted thiation of some hydrazones gave triazolopyridines and some examples of direct thiation of heterocycles are given. Thus, 2-methylpyridine, 5, and RNH2 gave 10 I (R = 3-pyridyl, 4-pyridyl, 4-methyl-2-pyridyl, 5-methyl-2-pyridyl, 2-pyridazyl, 2-pyrazyl, 2-triazolyl, 5-tetrazolyl, 2-benzothiazolyl, anilino). Oxidative cyclization of I (R = 5-methyl-2-pyridyl) gave II. Attempted thiation of III gave IV and thiation of 2-(N-2-pyridylformimidoyl)pyridine gave I (R = 2-pyridyl).
Journal of Heterocyclic Chemistry published new progress about 2215-33-0. 2215-33-0 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, and the molecular formula is C11H10N4, Quality Control of 2215-33-0.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem