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:
Sep. 20, 2005
Filed:
May. 21, 2004
Applicants:
Igor Likhotvorik, Culver, IN (US);
Joseph J. Lisowski, Knox, IN (US);
Inventors:
Igor Likhotvorik, Culver, IN (US);
Joseph J. Lisowski, Knox, IN (US);
Assignee:
Acura Pharmaceuticals, Inc., Palatine, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D489/00 ;
U.S. Cl.
CPC ...
Abstract
A one-pot process for preparing opioid analgesics such as hydrocodone, hydromorphone, and analogues thereof by reacting codeine, morphine, and analogues thereof with hydrogen in a solvent system of benzophenone and neutral solvent in the presence of a metal catalyst followed by oxidation in the presence of potassium tert-alkylate.