Abstract
Derivatives of a new class of 1,3-dioxanocoumarins -4-methyl-(2′,4′-bistrichloromethyl)-7,8-coumarinodioxane and 3-chloro-4-methyl-(2′,4′-bistrichloromethyl)-7,8-coumarinodioxane, respectively — were synthesized by condensation of 4-methyl- and 3-chloro-4-methyl-7-hydroxycoumarin with chloral in concentrated sulfuric acid. 8-(1,2,2,-2-Tetrachioroethyl)-7-hydroxycoumarin was obtained under similar conditions from 4-methyl-7-hydroxycoumarin methyl ether and chloral.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 29–31, January, 1975.
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Shamshurin, A.A., Krimer, M.Z. Condensation of hydroxycoumarins with chloral. Chem Heterocycl Compd 11, 22–24 (1975). https://doi.org/10.1007/BF00945263
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DOI: https://doi.org/10.1007/BF00945263