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X-ray diffraction studies of 5-functionalized substituted 1,2,3,4-tetrahydropyrimidin-2-ones(thiones): I. Molecular structures of 5-acetyl-4-ethyl-6-methyl-1,2,3,4-tetrahydropyrimidine-2-thione, 5-acetyl-6-methyl-4-(4-methylphenyl)-1,2,3,4-tetrahydropyrimidine-2-thione, and 5-acetyl-4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one

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Abstract

The structures of three 5-acetyl-1,2,3,4-tetrahydropyrimidin-2-ones(thiones), namely, 5-acetyl-4-ethyl-6-methyl-1,2,3,4-tetrahydropyrimidine-2-thione, 5-acetyl-6-methyl-4-(4-methylphenyl)-1,2,3,4-tetrahy-dropyrimidine-2-thione, and 5-acetyl-4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one, which are potential medicinals, are studied by X-ray diffraction. The conformational features of the molecules studied are analyzed. For these compounds, the dependence of the conformation of the tetrahydropyrimidine ring on the orientation of the substituent at the C(4) atom with respect to the heterocycle is found.

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Translated from Kristallografiya, Vol. 48, No. 1, 2003, pp. 97–102.

Original Russian Text Copyright © 2003 by Gurskaya, Zavodnik, Shutalev.

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Gurskaya, G.V., Zavodnik, V.E. & Shutalev, A.D. X-ray diffraction studies of 5-functionalized substituted 1,2,3,4-tetrahydropyrimidin-2-ones(thiones): I. Molecular structures of 5-acetyl-4-ethyl-6-methyl-1,2,3,4-tetrahydropyrimidine-2-thione, 5-acetyl-6-methyl-4-(4-methylphenyl)-1,2,3,4-tetrahydropyrimidine-2-thione, and 5-acetyl-4-(4-methoxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one. Crystallogr. Rep. 48, 92–97 (2003). https://doi.org/10.1134/1.1541749

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  • DOI: https://doi.org/10.1134/1.1541749

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