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:
May. 20, 2014
Filed:
Nov. 30, 2010
Applicants:
Giuseppe Motta, Rescaldina, IT;
Domenico Vergani, Biassono, IT;
Giorgio Bertolini, Sesto San Giovanni, IT;
Inventors:
Giuseppe Motta, Rescaldina, IT;
Domenico Vergani, Biassono, IT;
Giorgio Bertolini, Sesto San Giovanni, IT;
Assignee:
Euticals S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 211/00 (2006.01); C07C 221/00 (2006.01); C07C 225/00 (2006.01); C07C 223/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention refers to a new process for the synthesis of tapentadol comprising the quantitative resolution of the racemic mixture (V) to obtain the stereoisomer of (S)-3-(dimethylamino)-2-methyl-1-(3-nitrophenyl)-propan-1-one (VII) according to the Scheme 2 below using the (2R,3R)—O,O'-dibenzoyltartaric chiral acid wherein said resolution is quantitative. The present invention also refers to some intermediate compounds of the new synthesis process of tapentadol.