SULFATION OF BETULIN WITH CHLOROSULFONIC ACID IN DIMETHYLFORMAMIDE AND DIOXANE
Abstract
It was established, that the reaction of sulfation of betulin by chlorosulfonic acid in dioxane or dimethylformamide proceeds in homogeneous medium at temperature 40–60 °C. It was shown that for complete etherification of betilin to betulin 3,28-disulfat 4–5 hours are necessary. Betilin disulfat was obtained in the form of sodium salt.
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