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Nucleophilic substitution at the C(4) atom in series of functionally 4-substituted hexahydropyrimidine-2-thiones. Synthesis of 4-alkylthiohexahydropyrimidine-2-thiones

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Abstract

Nucleophilic substitution at the C(4) atom in 4-hydroxy(alkoxy)hexahydropyrimidine-2-thiones under the influence of alkanethiols in acidic, neutral, and basic media, as a result of which 4-alkylthiohexahydropyrimidine-2-thiones are formed, was studied. Hydrolysis and alcoholysis of the latter lead to the corresponding 4-hydroxy- or 4-alkoxyhexahydropyrimidine-2-thiones. The three-dimensional structures of the 4-alkylthiopyrimidines obtained were established by PMR spectroscopy, and it was shown that the stereoisomers with an axially oriented alkylthio group are thermodynamically more stable.

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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 234–240, February, 1988.

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Ignatova, L.A., Shutalev, A.D., Pagaev, M.T. et al. Nucleophilic substitution at the C(4) atom in series of functionally 4-substituted hexahydropyrimidine-2-thiones. Synthesis of 4-alkylthiohexahydropyrimidine-2-thiones. Chem Heterocycl Compd 24, 197–203 (1988). https://doi.org/10.1007/BF00473332

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  • DOI: https://doi.org/10.1007/BF00473332

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