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. 25, 2022
Filed:
Feb. 19, 2014
Applicant:
(Aba Chemicals (Nantong) Limited), Jiangsu, CN;
Inventors:
Assignee:
ABA CHEMICALS (NANTONG) LIMITED, Jiangsu, CN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 231/14 (2006.01); C07D 231/16 (2006.01);
U.S. Cl.
CPC ...
C07D 231/14 (2013.01); C07D 231/16 (2013.01);
Abstract
Provided is a method of preparing 3-fluoroalkyl-1-substituted pyrazol-4-carboxylic acid by air oxidation. The methoduses 3-fluoroalkyl-1-substituted pyrazol-4-formaldehyde as raw material for reaction in a neutral or alkaline condition under the action of a catalyst and with air as an oxidizing agent, to obtain 3-fluoroalkyl-1-substituted pyrazol-4-carboxylic acid. The method employs a mild, safe and clean reaction, and is suitable for industrial mass production.