Process for the preparation of herbicidally active 3-amino-5-aminocarbonyl-1,2,4-triazoles

US5051517A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Kurt Findeisen · Odenthal, DE
• Markus Lindig · Hilden, DE

Key dates

• Filing date: May 7, 1990
• Grant date: Sep 24, 1991
• Expiry date: May 7, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D409/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

3-amino-5-amino-carbonyl-1,2,4-triazoles of the formula ##STR1## are obtained in good yields and in high purity when a chloroformadine hydrochloride of the formula ##STR2## are reacted with an oxamohydrazide of the formula ##STR3## This reaction can be carried out in the presence of an acid acceptor and in the presence of a diluent at temperatures between 0.degree. C. and 150.degree. C.