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:
Nov. 16, 1999
Filed:
Mar. 02, 1999
Pierre-Jean Colson, Skokie, IL (US);
Kevin A Babiak, Evanston, IL (US);
Donald E Korte, Mundelein, IL (US);
Claire A Przybyla, Des Plaines, IL (US);
Lisa M Seaney, Glen Ellyn, IL (US);
Bruce E Wise, Elmhurst, IL (US);
G. D. Searle & Co., Chicago, IL (US);
Abstract
A process for producing a lactam of the formula ##STR1## wherein 2-bromo-4 chloro butyryl bromide or 2,4-dibromo butyryl bromide is coupled with 4-aminobenzonitrile to produce 4-(2,4-bromobutyrylamino)-benzonitrile, which is combined with sodium hydroxide, potassium hydroxide or potassium carbonate to produce 4-(3-bromo-2-oxopyrrolidin-1-yl)benzonitrile which is subjected to an excess of ammonium hydroxide to produce compounds of the formula (I).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile