The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1993
Filed:
Oct. 24, 1991
Eiichiro Fukusaki, Osaka, JP;
Hiroshi Takahama, Osaka, JP;
Minako Hada, Osaka, JP;
Yasuyuki Kimura, Osaka, JP;
Hiroyuki Yuasa, Osaka, JP;
Yutaka Nakazono, Osaka, JP;
Shuji Senda, Osaka, JP;
Tetsuo Omata, Osaka, JP;
Nitto Denko Co., Ltd., Ibarake, JP;
Abstract
This invention relates to the methods of preparing optically active epoxy alcohol which is caracterized by the steps of adding carboxylic anhydride to racemic epoxy alcohol (formula 1) in the presence of a hydrolase in an organic solvent, esterifying (-)-form of the epoxy alcohol preferentially to be epoxy ester (formula 2), separating optically active epoxy ester (formula 2) from optically active epoxy alcohol (formula 3) to yield optically active epoxy alcohol (formula 4), so that epoxy alcohol (formula 1) in high purity can be obtained easily and safely at ordinary temperature. ##STR1##