Abstract
6-Imino-1,3-dimethyl-5-(pyrrolidin-2-ylidene)-5,6-dihydropyrimidine-2,4(1H,3H)-dione reacted with substituted benzoyl chlorides in the presence of triethylamine to give the corresponding 10-(R-benzoyl)-2,4-dimethyl-6-(R-phenyl)-8,9-dihydropyrimido[5,4-e]pyrrolo[1,2-c]pyrimidine-1,3(2H,4H)-diones. Analogous reaction with thionyl chloride afforded 2,4-dimethyl-9,10-dihydro-6λ4-pyrimido[5,4-d]pyrrolo[1,2-b][1,2,6]-thiadiazine-1,3,6(2H,4H,8H)-trione.
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Original Russian Text © S.P. Gasparyan, M.V. Alexanyan, G.K. Harutyunyan, A.H. Martirosyan, H.M. Stepanyan, R.E. Muradyan, R.A. Tamazyan, A.G. Ayvazyan, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 9, pp. 1359–1363.
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Gasparyan, S.P., Alexanyan, M.V., Harutyunyan, G.K. et al. Synthesis of 10-(R-benzoyl)-2,4-dimethyl-6-(R-phenyl)-8,9-dihydropyrimido[5,4-e]pyrrolo[1,2-c]pyrimidine-1,3(2H,4H)-diones and 2,4-dimethyl-9,10-dihydro-6λ4-pyrimido[5,4-d]pyrrolo- [1,2-b][1,2,6]thiadiazine-1,3,6(2H,4H,8H)-trione. Russ J Org Chem 52, 1348–1352 (2016). https://doi.org/10.1134/S1070428016090177
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DOI: https://doi.org/10.1134/S1070428016090177