METHOD FOR RECOVERY AND PURIFICATION OF AMBROXIDE Russian patent published in 2020 - IPC B01D9/02 C12P17/04 C07B57/00 C07D307/92 C11B9/00 

Abstract RU 2720094 C2

FIELD: chemical or physical processes.

SUBSTANCE: group of inventions relates to a method of separating and purifying an isomer of (-)-ambroxide and a method of enhancing odor (-)-ambroxide. Methods include extraction of (-)-ambroxide from reaction mixture, containing (-)-ambroxide and one or more of compounds (II), (III) and (IV): , , , by selective crystallisation of (-)-ambroxide. After extraction of (-)-ambroxide does not contain or contains only olfactory acceptable amounts of compounds (II), (III) or (IV).

EFFECT: disclosed is a method of separating and purifying ambroxide.

18 cl, 3 tbl, 7 ex

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RU 2 720 094 C2

Authors

Eichhorn Eric

Dates

2020-04-24Published

2016-04-22Filed