Abstract
In the literature, there has appeared a communication [1] on the synthesis of 6-nitro-2, 3-dihydroquinolin-4(1H)-one (I) with mp 125–126‡C (2,4-dinitrophenylhydrazone, mp 269–270‡C) by the reaction of p-nitroaniline with acrylic acid. Quinolinone I with mp 232–234‡C (2,4-dinitrophenylhydrazone, mp 327–329‡C) was obtained by us by decarboxycyclization of N-(2-carboxy-4-nitrophenyl)-Β-alanine in acetic anhydride in the presence of potassium acetate [2].
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1390–1392, October, 1979.
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Bekhli, A.F., Bolotina, L.A. & Lopatin, B.V. Synthesis and constants of 6-nitro-2,3-dihydroquinolin-4(1h)-one. Chem Heterocycl Compd 15, 1120–1123 (1979). https://doi.org/10.1007/BF00471915
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DOI: https://doi.org/10.1007/BF00471915