Abstract
A convenient synthetic approach to polysubstituted dihydrogenated or heteroaromatic 1,2,4-triazolo[1,5-a]pyrimidines derivatives containing at position 5 a 4-methylpyrimidine moiety bearing a cycloamino substituent at position 2 and linked to the triazolopyrimidine bicycle through its position 5 was developed. The approach involves unusual three-component condensations of 3-amino-1,2,4-triazoles, methyl 3-(2-R-4-methylpyrimidin-5-yl)-3-oxopropionates, and a series of C1 synthons whose synthetic equivalents are a series of aromatic aldehydes, triethyl orthoformate, or DMFDMA were used as of C1 synthons.
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The study was carried out with a grant from the Russian Science Foundation (project no. 18-74-10097).
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Translated from Zhurnal Organicheskoi Khimii, 2021, Vol. 57, No. 2, pp. 259–267 https://doi.org/10.31857/S0514749221020129.
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Potapov, A.Y., Polikarchuk, V.A., Paponov, B.V. et al. Three-Component Condencations of 3-Amino-1,2,4-triazoles, Methyl 3-(2-Cycloamino-4-methylpyrimidin-5-yl)-3-oxopropionoates, and a Series of C1 Synthons as a Convenient Approach to Pyrimidin-5-yl-1,2,4-triazolo[1,5-a]pyrimidines. Russ J Org Chem 57, 219–225 (2021). https://doi.org/10.1134/S1070428021020123
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DOI: https://doi.org/10.1134/S1070428021020123