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:
Jun. 10, 2014
Filed:
Nov. 11, 2011
Processes for preparing morphinan-6-one products with low levels of alpha beta-unsaturated compounds
Henry J. Buehler, St. Louis, MO (US);
William E. Dummitt, St. Louis, MO (US);
Anthony Mannino, Maryland Heights, MO (US);
Dennis C. Aubuchon, Arnold, MO (US);
Hong Gu, Oak Park, CA (US);
Henry J. Buehler, St. Louis, MO (US);
William E. Dummitt, St. Louis, MO (US);
Anthony Mannino, Maryland Heights, MO (US);
Dennis C. Aubuchon, Arnold, MO (US);
Hong Gu, Oak Park, CA (US);
Mallinckrodt LLC, Hazelwood, MO (US);
Abstract
The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration of α,β-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound.