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Левданский, Владимир Александрович; Левданский, Александр Владимирович; Кузнецов, Борис Николаевич (2013)
Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Chemistry, Q, сульфатирование, 1,4-диоксан, betulin, sulfation, chlorosulfonic acid, 1,4-dioxane, N,N-dimethylformamide, betulin 3,28-disulfate, 3,28-дисульфат бетулина, QD1-999, Science, бетулин; сульфатирование; хлорсульфоновая кислота; 1,4-диоксан; N,N-диметилформамид; 3,28-дисульфат бетулина, хлорсульфоновая кислота, бетулин, N,N-диметилформамид
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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    • 7. Patent 2340624 (RU). 10.12.2008. (in Russ.).
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    • 9. Dzhil'bert E.E. Sul'firovanie organicheskikh soedinenii. [Sulfonation of organic compounds]. Moscow, 1969, 415 p. (in Russ.).
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