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. 07, 1995
Filed:
Aug. 19, 1992
William D Miller, Indianapolis, IN (US);
Eddie V Tao, Carmel, IN (US);
Eli Lilly and Company, Indianapolis, IN (US);
Abstract
This invention provides a novel process for the synthesis of bicyclic aromatic sulfonic acids employing reacting a bicyclic aromatic compound with sulfur trioxide-N,N-dimethylformamide complex in the presence of a water miscible, non-reactive solvent. The resulting sulfonic acid may be converted into the corresponding sulfonyl halide by the reaction with a thionyl halide. This invention further provides a novel process for the synthesis of bicyclic aromatic sulfonamides employing the reaction conditions described supra followed by an ammonolysis or amination.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile