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:
Apr. 21, 2015
Filed:
Jun. 18, 2012
Applicants:
Masamune Okamoto, Fujimino, JP;
Hideaki Imura, Iruma-gun, JP;
Naoto Takada, Iruma-gun, JP;
Inventors:
Assignee:
Central Glass Company, Limited, Ube-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 231/10 (2006.01); C07D 231/28 (2006.01); C07D 231/14 (2006.01);
U.S. Cl.
CPC ...
C07D 231/28 (2013.01); C07D 231/14 (2013.01);
Abstract
A method for producing a pyrazole compound of the general formula (5) includes reacting a 2-acyl-3-aminoacrylic acid ester of the general formula (1) with a hydrazine of the general formula (4) in the presence of a base where R, R, Rand Reach independently represent an alkyl group wherein Rrepresents an alkyl group or an aryl group wherein R, Rand Rhave the same meanings as above. It is possible by this production method to produce the 1,3-disubstituted pyrazol-4-carboxylic acid ester at a high yield and selectivity and with less discoloration.