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:
Mar. 01, 2016
Filed:
Jun. 19, 2014
Applicant:
Chemi S.p.a., Cinisello Balsamo, IT;
Inventors:
Umberto Ciambecchini, Patrica, IT;
Elio Ullucci, Patrica, IT;
Stefano Turchetta, Patrica, IT;
Maurizio Zenoni, Patrica, IT;
Assignee:
CHEMI S.P.A., Cinisello Balsamo, IT;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 227/16 (2006.01); C07C 59/40 (2006.01); C07C 219/28 (2006.01);
U.S. Cl.
CPC ...
C07C 227/16 (2013.01); C07C 59/40 (2013.01); C07C 219/28 (2013.01);
Abstract
A process is described for preparing fesoterodine fumarate comprising the salification reaction of fesoterodine with fumaric acid in an organic solvent, preferably a ketone, at a temperature not greater than 45° C. Such process allows obtaining products with high yields and purities, and in particular a product having a content of (2E)-4-[(3-(3-diisopropylamino-1-phenylpropyl)-4-(2-isobutyroyloxyphenyl)methoxy]-4-oxobut-2-enoic acid less than or equal to 0.15% by mole.