ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Benzothiazole compounds. 38. Synthesis and spectral characteristics of 3,3'-dimethyl-2,2'-(polymethylenedithio)dibenzothiazolium salts

I. Čulák, V. Sutoris, and V. Sekerka

Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, CS-842 15 Bratislava

Abstract: 2,2'-(Methylenedithio)dibenzothiazole reacts with CH₃I or (CH₃)₂S0₄ to afford 3,3'4limethyl-2,2Xniethylenedithio)dibenzothiazolium diiodide resp. di(methylsulfate). From 2,2'-(ethylenedithio)dibenzothiazole 2,3-dihydrothiazolo[2,3-6]benzothiazolium iodide is obtained and 2,2,-(trimethylenedithio)dibenzothiazole gives 3,4-dihydro-2H-1,3-thiazino[2,3-b]benzothiazolium iodide. The mechanism of the formation of these tricyclic compounds is reported. The structure of the compounds was confirmed using ¹H NMR, ¹³C NMR, and UV spectroscopy.

Full paper in Portable Document Format: 443a389.pdf

Chemical Papers 44 (3) 389–397 (1990)