Abstract
It is shown that sigma complexes of 5-nitropyrimidines with acetonide are protonated at the ring nitrogen atom in acidic media to give 5-nitroacetonyldihydropyrimidines. The latter are oxidized by dichlorodicyanobenzoquinone to 5-nitroacetonylpyrimidines.
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See [1] for Communication 2.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 6, pp. 823–826, June, 1981.
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Cherkasov, V.M., Remennikov, G.Y. & Romanenko, E.A. Sigma complexes in the pyrimidine series. 3. Some transformations of anionic sigma complexes of 5-nitropyrimidines. Chem Heterocycl Compd 17, 613–616 (1981). https://doi.org/10.1007/BF00503490
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DOI: https://doi.org/10.1007/BF00503490