Hydroxypyridonecarboxamides, their manufacture and use as herbicides

US5344813A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans Theobald · Schifferstadt, DE
• Wolfgang von Deyn · Neustadt, DE
• Christoph Nuebling · Ludwigshafen am Rhein, DE
• Helmut Walter · Obrigheim, DE
• Uwe Kardorff · Mannheim, DE
• Karl-Otto Westphalen · Speyer, DE
• Thomas Kappe · Graz, AT
• Matthias Gerber · Schifferstadt, DE

Key dates

• Filing date: Nov 25, 1992
• Grant date: Sep 6, 1994
• Expiry date: Nov 25, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/83
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hydroxypyridonecarboxamides of the formula I ##STR1## where: X is oxygen or sulfur; PA0 R.sup.1, R.sup.2 independently of each other are hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl or alkoxy, and these organic radicals are substituted or unsubstituted; PA0 R.sup.3 is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio, halogen or nitro; PA0 R.sup.4 is alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkylthio, phenyl or a 5- or 6-membered heterocyclic, aliphatic or aromatic radical containing from one to three heteroatoms selected from the group consisting of oxygen, sulfur and nitrogen, and these radicals are substituted or unsubstituted; with the exception of 6-methyl-4-hydroxypyrid-2-one-3-carboxamide and 6-methyl-4-hydroxypyrid-2-one-3-carboxylic acid-tert-butylamide.