Abstract
It is shown that the reaction of 1,3-dicarbonyl compounds or their acetals with 2-methylthio-4-amino-5-phenylthiazolium benzenesulfonate gives 6-methylthiothiazolo[3,4-a]pyrimidinium salts, which react with the appropriate intermediates to give polymethine dyes.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 634–638, May, 1982.
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Mikitenko, E.K., Kachkovskii, A.D. & Romanov, N.N. Condensed heterocycles with a thiazole ring. 1. Thiazolo[3,4-a]pyrimidine derivatives. Chem Heterocycl Compd 18, 476–480 (1982). https://doi.org/10.1007/BF00526080
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DOI: https://doi.org/10.1007/BF00526080