Herbicidal sulfonylureas

US5276007A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerhard Hamprecht · Weinheim, DE
• Horst Mayer · Ludwigshafen, DE
• Karl-Otto Westphalen · Speyer, DE
• Bruno Wuerzer · Otterstadt, DE
• Matthias Gerber · Schifferstadt, DE
• Klaus Grossmann · Schifferstadt, DE
• Wilhelm Rademacher · Schifferstadt, DE

Key dates

• Filing date: Feb 19, 1991
• Grant date: Jan 4, 1994
• Expiry date: Feb 19, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D521/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Substituted sulfonylureas of the general formula I ##STR1## where n and m are each 0 or 1, and PA1 R.sup.1 is hydrogen, alkyl, alkenyl or alkynyl; PA1 R.sup.2 is halogen or trifluoromethyl when m is 0, or, when m is 1, alkyl, alkenyl or alkynyl and, when X is 0 or S and m is 1, is trifluoromethyl or chlorodifluoromethyl; PA1 X is 0, S or N--R.sup.4, where R.sup.4 is hydrogen or alkyl; PA1 R.sup.3 is hydrogen, halogen, alkyl, haloalkyl or alkoxy; PA1 A is haloalkyl, halogen or ##STR2## where Z is oxygen or alkylimino N--R.sup.6 ; PA1 R.sup.5 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, alkenyl or alkynyl; PA1 R.sup.6 is hydrogen, alkyl, or together with R.sup.5 is a C.sub.4 -C.sub.6 -alkylene chain, where one methylene may be replaced by an oxygen atom or a C.sub.1 -C.sub.4 -alkylimino group, and PA1 R.sup.7 is hydrogen or halogen, and environmentally tolerated salts thereof, processes and intermediates for the manufacture of compounds I, and their use as herbicides and bioregulators.