Takahashi, Torizo published the artcilePyridine derivatives containing sulfur. XVII. Synthesis of pyridothiazoles and pyrimidazoles, Application In Synthesis of 31784-71-1, the publication is Yakugaku Zasshi (1946), 66(No. 7/8A), 26, database is CAplus.
By the use of Cu(SCN)2 in glacial AcOH solution the following 2-aminopyrido[2,3-d]thiazoles were obtained: 6-nitro, yellow plates, m. 183°, from 2-amino-5-nitropyridine; 6-bromo, yellow plates, m. 135°, from 5-bromo-2-amino-pyridine; and 5-chloro, pale yellow needles, m. 69-71°, from 2-chloro-5-aminopyridine. BrCH2COMe with 5-bromo- or 5-nitro-2-aminopyridine gave 6-bromo-2-methyl-imidazo[1,2-a]pyridine HCl salt, colorless, efflorescent rhomboprisms, and the 6-nitro analog (I), bright yellow needles, m. 161°. Reduction of I gave the corresponding amino compound, colorless needles, m. 77° (N-Ac derivative), colorless needles, m. 181°.
Yakugaku Zasshi published new progress about 31784-71-1. 31784-71-1 belongs to thiazole, auxiliary class Other Aromatic Heterocyclic,Chloride,Amine, name is 5-Chlorothiazolo[5,4-b]pyridin-2-amine, and the molecular formula is C5H6N2O2, Application In Synthesis of 31784-71-1.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica