The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Benzothiazoles. XI. Cyclohexylamine substitution of 2-halo-6-nitrobenzothiazoles》. Authors are Foa, M.; Ricci, A.; Todesco, P. E.; Vivarelli, P..The article about the compound:2-Chloro-6-nitrobenzo[d]thiazolecas:2407-11-6,SMILESS:O=[N+](C1=CC=C2N=C(Cl)SC2=C1)[O-]).Safety of 2-Chloro-6-nitrobenzo[d]thiazole. Through the article, more information about this compound (cas:2407-11-6) is conveyed.
cf. CA 63, 1676a, 8171a. The reaction of cyclohexylamine (I) and 2-Cl or 2-Br-6NO2-benzothiazole to give 2-cyclohexylamino-6-nitrobenzothiazole (II), m. 167° (alc.), was studied in MeOH, EtOH, and isoPrOH. In MeOH in addition to II, 30% of the 2-MeO derivative was formed. Addition of I.HClO4 inhibits methanolysis and also decreases the rate of aminolysis. I.HClO4 also diminished the rate in EtOH when solvolysis was absent. LiClO4 and Et4N+ClO4- on the other hand increased the rate of the aminolysis reaction. Et2NH.HClO4 also decreases the rate of reaction of Et2NH and 2-halobenzothiazoles. KCl/KBr is about 1.4 in the reactions studied.
As far as I know, this compound(2407-11-6)Safety of 2-Chloro-6-nitrobenzo[d]thiazole can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI