Abstract
Acenaphthenequinone and its halogen derivatives readily undergo condensation with 2-thiohydantoin, thiazolidinedione-2, 4, and the N-phenyl and N-p-tolyl derivatives of the latter in acid medium, on boiling in the presence of anhydrous sodium acetate. Replacement of an oxygen atom in the thiazolodine ring by sulfur leads to bathochromic shift of UV absorption maxima both in solution in dioxane and in concentrated sulfuric acid. The large displacement of the spectral maxima in sulfuric acid as compared with dioxane is evidently due to salt formation.
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References
A. P. Karishin and Yu. V. Samusenko, ZhOrKh, 1, 1003, 1965.
A. P. Karishin and L. A. Solomakha, ZhOrKh, 1965 (in press).
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Karishin, A.P., Timchenko, A.I., Dzhurka, G.F. et al. Condensation of acenaphthenequinone and its halogen derivatives with 2-thiohydantoin and thiazolidinedione-2, 4. Chem Heterocycl Compd 1, 473–480 (1965). https://doi.org/10.1007/BF00469922
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DOI: https://doi.org/10.1007/BF00469922