Abstract
A new methods have been developed for the synthesis of condensed pyrido[2,3-b]thieno[3,2-d]pyrimidines based on cyclic derivatives of 4-cyanopyridine-3-thiones. The presence of two different reactive functional groups NH2 and CONH gives the possibility of carrying out different conversions of thieno[2,3-b]pyridines.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, 1245–1252, August, 2008.
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Paronikian, E.G., Akopian, S.F. & Noravian, A.S. Synthesis of 2,3-disubstituted derivatives of pyrano-, thiopyrano-, and benzoannelated pyrido[2,3-b]thieno[3,2-d]pyrimidines. Chem Heterocycl Comp 44, 1003–1008 (2008). https://doi.org/10.1007/s10593-008-0145-y
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DOI: https://doi.org/10.1007/s10593-008-0145-y