Method for producing 1-unsubstituted 3-aminopyrroles

US5414082A · kind A · utility

Assignee

• Arzneimittelwerk Dresden GmbH · DE

Inventors

• Andreas Rolfs · Berlin, DE
• Jurger Liebscher · Berlin, DE
• Klaus Unverferth · Dresden, DE
• Gottfried Faust · Berlin, DE

Key dates

• Filing date: Aug 11, 1993
• Grant date: May 9, 1995
• Expiry date: Aug 11, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D401/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for producing pharmacologically active 1-unsubstituted 3-aminopyrroles of the formula ##STR1## by ring transformation of a corresponding 1,2-thiazolium pyrrole in a single step, without producing harmful byproducts.