Abstract
Substituted 4-hydroxy-1H-thieno[2,3-b;4,5-b′]dipyridin-2-ones were prepared by the reactions of 3-cyanopyridine-2(1H)-thiones with alkyl 4-chloroacetoacetates and by intramolecular cyclization of alkyl 4-(2-pyridylthio)acetoacetates or alkyl 3-(3-aminothieno[2,3-b]pyridin-2-yl)-3-oxopropionates under the action of bases.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 347–353, February, 2000.
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Rodinovskaya, L.A., Shestopalov, A.M. Synthesis of substituted 4-hydroxy-1H-thieno[2,3-b;4,5-b′]dipyridin-2-ones. Russ Chem Bull 49, 348–354 (2000). https://doi.org/10.1007/BF02494687
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DOI: https://doi.org/10.1007/BF02494687