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. 31, 2009
Filed:
Mar. 29, 2005
Applicants:
Hiroaki Hibino, Toyonaka, JP;
Tomoyasu Yoshida, Ibaraki, JP;
Inventors:
Hiroaki Hibino, Toyonaka, JP;
Tomoyasu Yoshida, Ibaraki, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 65/01 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for producing a compound represented by the formula (3): wherein n is an integer of 1 to 6, characterized by the steps of hydrolyzing a solution containing an ester compound represented by the formula (1): wherein R is a lower alkyl group and n is an integer of 1 to 6, and a compound represented by the formula (2): wherein R is as defined above, adjusting the pH of the resulting solution to pH 4 to 8, and then subjecting to phase separation to obtain an organic layer containing the carboxylic acid of formula (3).