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:
Feb. 14, 1984
Filed:
Nov. 10, 1982
Applicant:
Inventors:
Berkeley W Cue, Jr, Gales Ferry, CT (US);
Philip D Hammen, East Lyme, CT (US);
Stephen S Massett, Groton, CT (US);
Assignee:
Pfizer Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549401 ; 549404 ; 548309 ;
Abstract
6-Fluoro-4-chromanone, a sorbinil intermediate, is regenerated from enantiomeric and mixtures of enantiomeric and racemic compounds obtained as major by-products in the synthesis of sorbinil. The regenerated intermediate is useful in the synthesis of additional sorbinil.