Abstract
The reactions of 2, 3-dihydrothiazolo- (I) and 2, 3-dihydrothiazino-1, 3-[2, 3-b]benzthiazolium chlorides (II) with water, aqueous sodium hydroxide, aqueous alcoholic ammonia, and hydrazine hydrate are investigated. Excess alcoholic potassium hydroxide cleaves I and II to o-(Ω-mercaptoalkylamino) thiophenols, condensation of which with acetyl chloride followed by treatment of the reaction products with potassium iodide gives 2-methyl-3-(Ω-mercaptoalkyl)benzthiazolium iodides. A series of dyes is prepared from these compounds.
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Kuznetsova, E.A., Bogolyubskii, V.A., Bogolyubskaya, L.T. et al. Synthesis of 2-mercaptobenzthiazole derivatives. Chem Heterocycl Compd 3, 659–661 (1967). https://doi.org/10.1007/BF00468339
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DOI: https://doi.org/10.1007/BF00468339