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Title:
METHOD FOR PURIFYING OPTICALLY ACTIVE ALPHA-(1-AMINOETHYL)- BENZENEMETHANOL
Document Type and Number:
Japanese Patent JPS6064950
Kind Code:
A
Abstract:

PURPOSE: To purify and separate an optically active substance from a mother liquor, by cruystallizing racemic modification from a solution of α-(1-aminoethyl--benzenemethanol rich in the optically active substance, and separating and removing the resultant racemic modification.

CONSTITUTION: The (±)-isomer is crystallized from a solution of α-(1-aminoethyl)-benzenemethanol rich in the (+)- or (-)-isomer, separated and removed from the mother liquor. Thus, the (+)- or (-)-α-(1-aminoethyl)-benzenemethanol is obtained from the mother liquor. According to the above-mentioned method, the aimed compound having a high optical purity is obtained from the mother liquor simply by crystallizing the (±)-isomer if the α-(1-aminoethyl)-benzenemethanol having a certain optical activity is obatined and led to diastereomer salts with an optical resolving agent.


Inventors:
MIYAKADO MASAKAZU
FUKUSHIMA MASAYUKI
NISHIOKA TOSHIO
Application Number:
JP1983000171885
Publication Date:
April 13, 1985
Filing Date:
September 16, 1983
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C07B57/00; C07B31/00; C07C67/00; C07C213/00; C07C213/10; C07C215/30; (IPC1-7): C07B57/00; C07C89/04; C07C91/16