Process for the production of phosphoric acid-dimethylamide-dichloride or phosphoric acid-bis-(dimethylamide)-chloride

US4098819A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Heinz Liberda
• Hellmuth Spes · Burghausen, DE
• Alfred Trommet

Key dates

• Filing date: Dec 6, 1976
• Grant date: Jul 4, 1978
• Expiry date: Dec 6, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the production of phosphoric acid-dimethylamide-dichloride (A) or phosphoric acid-bis-(dimethylamide)-chloride (B) by reacting phosphorus oxychloride and dimethylammonium chloride at elevated temperature under anhydrous conditions, which comprises heating phosphorus oxychloride with a mixture of dimethylammonium-chloride and A and/or B to temperatures of 130.degree. to 240.degree. C, using per mole of phosphorus oxychloride at least 1 mole of dimethylammonium chloride and optionally distilling off A or B from the reaction mixture. The compounds A and B produced according to the process are valuable intermediate products for the manufacture of pesticides, solvents, and lubricants.