Chenard, B. L. published the artcileBenzopentathiepins: synthesis via thermolysis of benzothiadiazoles with sulfur, Application of Benzo[d][1,2,3]thiadiazol-5-amine, the publication is Journal of Organic Chemistry (1984), 49(7), 1221-4, database is CAplus.
A general synthesis of benzopentathiepins I (R = H, 6-Cl, 6-CF3, 5-MeO, 5-Me2N, 4-Br, 4-CF3) has been developed by the thermolysis of benzothiadiazoles II with S. Diazabicyclooctane enhances the yield of benzopentathiepin by approx. 2-fold. The scope and limitations of the method are also discussed.
Journal of Organic Chemistry published new progress about 1753-29-3. 1753-29-3 belongs to thiazole, auxiliary class Other Aromatic Heterocyclic,Amine, name is Benzo[d][1,2,3]thiadiazol-5-amine, and the molecular formula is C6H5N3S, Application of Benzo[d][1,2,3]thiadiazol-5-amine.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica