Process for the production of 4-amino-6-tert. butyl-3-mercapto-1,2,4-triazin-5-one

US4326056A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Axel Kleemann · Hanau, DE
• Bernd Lehamnn · Alzenau, DE
• Herbert Klenk · Hanau, DE

Key dates

• Filing date: May 22, 1981
• Grant date: Apr 20, 1982
• Expiry date: May 22, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D253/075
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

4-amino-6-tert.butyl-3-mercapto-1,2,4-triazin-5-one of the formula ##STR1## is produced by reacting pivaloyl cyanide and isobutylene in the presence of acetic acid and sulfuric acid, hydrolyzing the reaction mixture in the presence of water and reacting the trimethyl pyruvic acid formed with thiocarbohydrazide. The triazinone is an important intermediate product in the synthesis of the known herbicide 4-amino-6-tert.butyl-3-methylmercapto-1,2,4-triazin-5-one.