Abstract
The structure and ring-chain tautomerism of 2-alkylthio-3,4,6,6-tetramethyl-4-hydroxy-3,4,5,6-tetrahydropyrimidine hydrohalides (Alk = CH3, C2H5, n-C3H7, n-C4H9, iso-C4H9, CH2C6H5 Hal = Cl, Br, I) were analyzed by means of UV, IR, and PMR spectroscopy. It is shown that the cations of the salts in the crystalline state and in solutions exist primarily in the cyclic form.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 695–698, May, 1982.
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Shutalev, A.D., Ratomskaya, M.A., Ignatova, L.A. et al. Structure of salts of substituted 2-alkylthiotetrahydropyrimidines. Chem Heterocycl Compd 18, 530–532 (1982). https://doi.org/10.1007/BF00526094
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DOI: https://doi.org/10.1007/BF00526094