1. Benzothiazoline derivatives. I. Reaction of 2-benzothiazolinethione with ethylene oxide
2. E. A. Vlasova and I. Ya. Postovskii, Khim. Geterolsikl. Soedin., 700 (1971).
3. Benzothiazolium derivatives. III. Nucleophilic substitution reactions of benzothiazolium salts
4. Alternative preparation of 8 was performed by treating 3-(2-mereaptoethyl)-2-benzothiazolinone (1.1 g.), prepared as described in reference 6, in pyridine (50 ml.) with 10.2 g. of acetic anhydride. The solution was stirred for 10 hours at room temperature and pure 8 (yield, 72%) was precipitated by pouring the reaction mixture into water (300 ml.). The product was shown to be identical to that obtained from 7 by mixture melting point determination and spectral comparisons (uv, ir and nmr).