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. 24, 1987
Filed:
Apr. 25, 1986
Applicant:
Inventors:
Charles W Ryan, Indianapolis, IN (US);
Bruce A Slomski, Indianapolis, IN (US);
Assignee:
Eli Lilly and Company, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
564 99 ; 564 80 ;
Abstract
A 4-acyl-o-phenylenediamine is selectively sulfonated on the amino group meta to the acyl group to provide an important intermediate for benzimidazole pharmaceuticals. Some of the intermediates are new to organic chemistry.