Amine salts of phenyl-4-hydroxypyridazines and the preparation and herbicidal compositions thereof

US4058390A · kind A · utility

Assignee

• Chemie Linz GmbH · AT

Inventors

• Rupert Schonbeck · Leonding, AT
• Engelbert Kloimstein · Eferding, AT
• Erwin J. Wittmann · Linz, AT

Key dates

• Filing date: Dec 16, 1975
• Grant date: Nov 15, 1977
• Expiry date: Dec 16, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D237/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Amine salts of 3-phenyl-6-halo-4-hydroxypyridazines of the formula: ##STR1## in which X is a chlorine or bromine atom, R.sub.1 is an alkyl group containing up to 14 carbon atoms, which group may be substituted by a hydroxy group, an alkoxy group containing up to 10 carbon atoms, cyano group, amino group or lower mono- or lower dialkylamino group, an alkenyl group containing up to 6 carbon atoms or a cycloalkyl group containing 5, 6 or 7 carbon atoms, and R.sub.2 and R.sub.3 have the same meaning as R.sub.1 or each is a hydrogen atom, or R.sub.1 and R.sub.2 together with the nitrogen atom of the amine form a 5- or 6-membered heterocyclic group which may also contain oxygen and which may be mono- or di- substituted by alkyl, and herbicidal compositions containing them.