METHOD OF PRODUCING BETULIN Russian patent published in 2018 - IPC C07J53/00 C07J63/00 C07J75/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a method of producing betulin, including extraction with ethyl alcohol prepared raw materials at elevated temperature and pressure, with a temperature of 90–150 ºC, pressure – not less than 10 atm, consumption of ethyl alcohol is 5–25 kg/kg of raw materials, extraction time is 20 minutes – 4 hours.

EFFECT: new method of producing betulin, which allows to separate betulin from birchbark with a high yield and purity, which does not produce toxic or difficult to dispose waste and by-products.

1 cl, 1 tbl