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:
Jul. 23, 1996
Filed:
Apr. 17, 1995
Bernhard Kutscher, Maintal, DE;
Hans-Reinhold Dieter, Darmstadt, DE;
ASTA Medica Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
A process for the production of azophenothiazine derivatives having either of the following structures: ##STR1## where X and Y include alkyl, alkoxy, halogen, hydrogen, carboxy, or carboxy alkyl substituents. These compounds are precursors to pharmaceutically active compounds such as pipacetate. The process involves the reaction of a 2-chloropyridine with a 2-mercaptoaniline or a dimer of 2-(2-mercaptophenylamino)pyridine in an inert solvent, e.g., .gradient.-methylpyrolidone in the presence of an oxidizing agent, e.g., performic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile