Abstract
Substituted 2,5-diformylthiazolopyrimidopyrimidines are synthesized through reaction of 6-R-4-methyl-2-cyanomethylthiopyrimidines with the Vilsmeier reagent. They can be used to prepare cyanine dyes.
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For Communication 1, see [1]
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 698–703, May, 1992.
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Mikitenko, E.K., Romanov, N.N. Cyclazines and their analogs. Chem Heterocycl Compd 28, 591–595 (1992). https://doi.org/10.1007/BF00475265
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DOI: https://doi.org/10.1007/BF00475265