Schulze, Juergen et al. published their research in Zeitschrift fuer Chemie in 1980 | CAS: 58759-63-0

5-Nitrobenzothiazole-2-thiol (cas: 58759-63-0) belongs to thiazole derivatives. The thiazole ring has been identified as a central feature of numerous natural products, perhaps the most famous example of which is epothilone. Thiazole sulfonation occurs only under forcing conditions: the action of oleum at 250 °C for 3 hours in the presence of mercury(II) sulfate leads to 65% formation of 5-thiazole sulfonic acid.COA of Formula: C7H4N2O2S2

Partial reduction of 1-substituted 2,4-dinitrobenzenes was written by Schulze, Juergen;Tanneberg, Hartmut;Matschiner, Hermann. And the article was included in Zeitschrift fuer Chemie in 1980.COA of Formula: C7H4N2O2S2 This article mentions the following:

Refluxing 2,4-(O2N)2C6H3R (R = NHCN, NHCONH2, SCN, S2CNMe2) with Fe and HOAc 5-10 min. gave 55-88% I (X = NH, R1 = NH2, OH; X = S, R1 = NH2, SH). In the experiment, the researchers used many compounds, for example, 5-Nitrobenzothiazole-2-thiol (cas: 58759-63-0COA of Formula: C7H4N2O2S2).

5-Nitrobenzothiazole-2-thiol (cas: 58759-63-0) belongs to thiazole derivatives. The thiazole ring has been identified as a central feature of numerous natural products, perhaps the most famous example of which is epothilone. Thiazole sulfonation occurs only under forcing conditions: the action of oleum at 250 °C for 3 hours in the presence of mercury(II) sulfate leads to 65% formation of 5-thiazole sulfonic acid.COA of Formula: C7H4N2O2S2

Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica