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. 22, 2016
Filed:
Nov. 28, 2012
Applicant:
Sanofi, Paris, FR;
Inventors:
Xavier Bon, Paris, FR;
Jean-Louis Delepine, Paris, FR;
Laure Jourdin, Paris, FR;
Denis Largeau, Paris, FR;
Philippe Vayron, Paris, FR;
Assignee:
SANOFI, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/78 (2006.01); C07D 307/80 (2006.01); C07D 307/82 (2006.01);
U.S. Cl.
CPC ...
C07D 307/80 (2013.01); C07D 307/82 (2013.01);
Abstract
The invention relates to a method for preparing 5-amino-benzoyl-benzofuran derivatives having the general formula in which Ris hydrogen or an alkyl or aryl group and Ris hydrogen, an alkyl, alkoxy or dialkylaminoalkoxy group. According to the invention, the compounds having formula I are prepared by hydrogenating a 5-nitro-benzofuran derivative having the general formula in which Rand Rhave the same meaning as above in the presence of palladized charcoal as a catalyst and in an ether or a mixture of ether as a solvent, thus forming the desired compounds.