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:
Jan. 19, 2010
Filed:
Jan. 31, 2003
Yutaka Ishii, Osaka, JP;
Yasushi Miki, Osaka, JP;
Yoshiro Furukawa, Osaka, JP;
Satoshi Murakami, Osaka, JP;
Yutaka Ishii, Osaka, JP;
Yasushi Miki, Osaka, JP;
Yoshiro Furukawa, Osaka, JP;
Satoshi Murakami, Osaka, JP;
Daiso Co., Ltd., Osaka, JP;
Abstract
The present invention provides a method of kinetic optical resolution of carboxylic acid derivatives using specific optically active catalysts. A racemic or diastereomeric mixture of carboxylic acid derivatives of the formula (A) is reacted with a nucleophile in the presence of an optically active catalyst to form an optically active nucleophile derivative of the formula (B). The catalyst is an optically active compound represented by the formula (C) or (D) [wherein Ris a substituted or unsubstituted, saturated or unsaturated, straight-chain, branched or alicyclic aliphatic hydrocarbon group which can have a heteroatom, Ris ethyl or vinyl, and Ris hydrogen or methoxy respectively].