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. 04, 2011
Filed:
Feb. 23, 2006
Hidenori Aihara, Kanagawa, JP;
Wakako Yokota, Kanagawa, JP;
Tetsu Yamakawa, Tokyo, JP;
Kenji Hirai, Kanagawa, JP;
Hidenori Aihara, Kanagawa, JP;
Wakako Yokota, Kanagawa, JP;
Tetsu Yamakawa, Tokyo, JP;
Kenji Hirai, Kanagawa, JP;
Sagami Chemical Research Center, Kanagawa, JP;
Japan Finechem Company, Inc., Tokyo, JP;
Abstract
In a process for producing 1-substituted-3-fluoroalkyl-pyrazole-4-carboxylate (3) by a reaction of 2-alkoxymethylenefluoroacylacetate (1) and hydrazine (2), the reaction is conducted in the presence of a base and water, to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3) with high selectivity and yield. This novel process enables to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3), which is useful as an intermediate for pharmaceuticals and agrochemicals, with high selectivity and yield by simple and safe operations.