Method for the production of sulphamic acid halogenides

US7232926B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Gerhard Hamprecht · Weinheim, DE
• Michael Puhl · Hirschberg, DE
• Robert Reinhard · Schifferstadt, DE
• Ingo Sagasser · Schifferstadt, DE
• Thomas Schmidt · Neustadt, DE
• Norbert Gotz · Worms, DE
• Thomas Zierke · Böhl-Iggelheim, DE

Key dates

• Filing date: May 15, 2003
• Grant date: Jun 19, 2007
• Expiry date: Jun 9, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing sulfamoyl halides of primary or secondary amines, comprising the following steps: The invention further relates to a process for preparing sulfonic diamides, comprising the preparation of sulfamoyl halides by means of carrying out steps i) and ii) and subsequently reacting the sulfamoyl halide obtained with ammonia. The invention further relates to the use of this process for preparing active herbicidal ingredients having a sulfuric diamide structure. The invention further relates to novel sulfamoyl chlorides.