Abstract
Successive treatment of accessible 2-acylamino-3,3-dichloroacrylonitriles with imidazole and hydrazine hydrate led to the formation of 4-acylamino-3(5)-amino-5(3)-(1H-imidazol-1-yl)pyrazoles, and condensation of the latter with acetylacetone afforded 3-acylamino-2-(1H-imidazol-1-yl)-5,7-dimethylpyrazolo [1,5-a]pyrimidines whose structure was reliably determined by X-ray analysis.
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Original Russian Text © A.P. Kozachenko, O.V. Shablykin, E.B. Rusanov, A.N. Vasilenko, V.S. Brovarets, 2009, published in Zhurnal Obshchei Khimii, 2009, Vol. 79, No. 5, pp. 824–828.
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Kozachenko, A.P., Shablykin, O.V., Rusanov, E.B. et al. Transformation of the condensation products of 2-acylamino-3,3-dichloroacrylonitriles with imidazole into pyrazolo[1,5-a]pyrimidine derivatives. Russ J Gen Chem 79, 996–1000 (2009). https://doi.org/10.1134/S1070363209050223
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DOI: https://doi.org/10.1134/S1070363209050223