Abstract
The condensation of 2-mercaptopyridine, 2-mercapto-4-methylpyridine, and 2-mercapto-6-methylpyridine with α-bromoacetaldehyde and its diethyl acetal has given cyclic products (3-hydroxy- and 3-ethoxy-2,3-thiazolo[3,2-a]pyridinium salts), from which cyanine dyes have been synthesized.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1254–1257, September, 1973.
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Sych, E.D., Bubnovskaya, V.N., Gorb, L.T. et al. Synthesis and reactions of some derivatives of 1,2-dihydrothiazolo [3,2-a]pyridinium salts. Chem Heterocycl Compd 9, 1138–1141 (1973). https://doi.org/10.1007/BF00474789
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DOI: https://doi.org/10.1007/BF00474789