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:
Aug. 03, 2010
Filed:
Jul. 27, 2006
Applicants:
Minoru Koura, Kawagoe, JP;
Yukiyoshi Yamazaki, Higashimurayama, JP;
Kimiyuki Shibuya, Tokorozawa, JP;
Inventors:
Minoru Koura, Kawagoe, JP;
Yukiyoshi Yamazaki, Higashimurayama, JP;
Kimiyuki Shibuya, Tokorozawa, JP;
Assignee:
Kowa Co., Ltd., Nagoya-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 69/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing an optically active 2-hydroxybutyric ester represented by formula (1): by reacting an optically active 2,3-epoxypropionic ester represented by formula (2): with a methyl Grignard reagent CHMgX in the presence of a copper catalyst in an amount of 0.05 to 0.5 mol with respect to 1 mol of the 2,3-epoxypropionic ester.