Conclusions
A method was developed for obtaining 2,4,8,10-tetraazabicyclo[4.4.0]-3,9-decanediones, which contain aromatic, alkaryl, and heteroaromatic substituents in the 7 position, by the condensation of 6-ureidohexahydro-2-pyrimidinones with the appropriate aldehydes in the presence of cationite KU-2 in the acid form.
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Deceased.
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1597–1601, July, 1980.
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Eres'ko, V.A., Epishina, L.V., Lebedev, O.V. et al. Chemistry of bicyclic ureas 6. Synthesis of 2,4,8,10-tetraazabicyclo [4.4.0]-3,9-decanediones. Russ Chem Bull 29, 1141–1144 (1980). https://doi.org/10.1007/BF00949171
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DOI: https://doi.org/10.1007/BF00949171