The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Synthesis of heterocyclic compounds of nitrogen. XXXIV. Derivatives of 2-chloro- and 2-aminobenzothiazole-6-sulfonamide》. Authors are Takahashi, Torizo; Taniyama, Hyozo.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-]).HPLC of Formula: 2407-11-6. Through the article, more information about this compound (cas:2407-11-6) is conveyed.
2-Mercaptobenzothiazole with PCl5 and POCl3 on a boiling water bath gave 2-chlorobenzothiazole (I), whereas heating at 130-40° gave benzothiazole, pale yellow oil, b. 234°. Nitration of I gave 2-chloro-6-nitrobenzothiazole (II), pale yellow needles, m. 190°, which was reduced to the 2-chloro-6-amino compound (III), colorless needles, m. 163°, and converted to the 2-chloro-6-acetamido compound, colorless needles, m. 97°. Condensation of III and p-AcNHC6H4SO2Cl gave 2-chloro-6-(p-acetamidophenylsulfonamido)benzothiazole, colorless plates, m. 254°, hydrolyzed to the p-aminophenyl compound, colorless needles, m. 97°. II and 2-mercapto-6-nitrobenzothiazole gave bis(6-nitro-2-benzothiazolyl) sulfide, light yellow needles, m. 280-1°, which was reduced to the diamino compound, colorless needles, m. 272-3°. Cu(SCN)2 with p-H2NC6H4SO2NH2 gave 2-amino-6-benzothiazolesulfonamide, colorless needles, decompose 273°, which gave the 2-acetamido compound, colorless plates, m. 302°, and the 2-benzamido compound, colorless prisms, m. 248-9°, by heating with Ac2O and BzCl, resp..
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Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI