Abstract
A new method for the synthesis of 2,3-dihydrobenzo[h][1,6]naphthyridin-4-(1H)-ones, which consists in cyclization of 4-(β-carboxyethylamino)quinoline-3-carboxylic acids by heating them in acetic anhydride in the presence of potassium acetate, is proposed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1660–1662, December, 1975.
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Mikhailitsyn, F.S., Braude, E.M. & Bekhli, A.F. Synthesis of naphthyridines. Chem Heterocycl Compd 11, 1405–1407 (1975). https://doi.org/10.1007/BF00764536
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DOI: https://doi.org/10.1007/BF00764536