Conclusions
The reaction of urea withα-alkyl-α-formylcarboxylate esters and oxalacetic ester in oleum gives 5-alkyluracils and orotic acid, respectively.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 918–920, April, 1968.
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Gunar, V.I., Ovechkina, L.F., Mikhailopulo, I.A. et al. Some features of the reaction of β-dicarbonyl compounds with urea in oleum. Russ Chem Bull 17, 883–885 (1968). https://doi.org/10.1007/BF00905778
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DOI: https://doi.org/10.1007/BF00905778