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. 11, 1993
Filed:
Aug. 14, 1992
Applicant:
Inventor:
Robert W Dugger, Mystic, CT (US);
Assignee:
Pfizer Inc, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548486 ;
Abstract
Process for the production of 5-fluoro-6-chloro- oxindole, (III), which is useful in the synthesis of certain analgesic and antiinflammatory agents, via two different synthetic pathways. Compounds of formula (I) and (II) shown below ##STR1## which are intermediates in the process of this invention.