Method for producing N-phosphonomethylglycine

US7145034B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Wulff · Mannheim, DE
• Stefan Orsten · Ellerstadt, DE
• Alfred Oftring · Bad Dürkheim, DE
• Peter Zehner · Ludwigshafen, DE

Key dates

• Filing date: Jun 21, 2002
• Grant date: Dec 5, 2006
• Expiry date: Oct 13, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/3813
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing N-phosphono-methylglycine by reacting a hexahydrotriazine compound with a triacyl phosphite in an organic solvent, hydrolyzing the resulting phosphono compound after prior extraction into an aqueous phase and separation from the organic phase. The process avoids decomposition of the organic solvent during hydrolysis.