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:
Mar. 25, 2014
Filed:
Sep. 07, 2009
Katsuhisa Masumoto, Ibaraki, JP;
Kouji Yoshikawa, Toyonaka, JP;
Katsuhisa Masumoto, Ibaraki, JP;
Kouji Yoshikawa, Toyonaka, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A process for producing an optically active cyclopropanecarboxylic acid ester compound represented by the formula (4): (wherein R, Rand * each represents the same meaning as defined below), comprising reacting a diazoacetic acid ester represented by the formula (2):NCHCOR  (2)(wherein Rrepresents an alkyl group having 1 to 15 carbon atoms or the like) with a compound represented by the formula (3): (wherein Rrepresents an alkyl group having 1 to 15 carbon atoms or the like), in the presence of an asymmetric copper complex obtained by reacting a copper compound and an optically active salicylideneaminoalcohol compound represented by the formula (1): (wherein Rrepresents an alkyl group having 1 to 4 carbon atoms or the like, Rrepresents a hydrogen atom or the like, Rand Rindependently represent a hydrogen atom or the like, and * represents an asymmetric center).