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:
Nov. 07, 2006
Filed:
Apr. 15, 2004
Applicants:
Hervé Lhermitte, Paris, FR;
Charles-henri Vincent, Precy sur Oise, FR;
Christian Picherit, Boussemont, FR;
Inventors:
Hervé Lhermitte, Paris, FR;
Charles-Henri Vincent, Precy sur Oise, FR;
Christian Picherit, Boussemont, FR;
Assignee:
Isochem, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 237/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
According to the process of the invention, the hexahydropyridazine-3-carboxylic acid derivatives are prepared by reacting a compound of formula (II) with a compound of formula (III) in the presence of a base with a pK of greater than or equal to 8.5, in a ketone organic solvent, to obtain an intermediate compound that is not isolated and that is treated with a basic aqueous medium. By means of this process, the derivatives are obtained more quickly and more economically.