Herbicidal sulfonylureas

US4602936A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Werner Topfl · Dornach, CH
• Georg Pissiotas · Lörrach, DE

Key dates

• Filing date: Aug 30, 1984
• Grant date: Jul 29, 1986
• Expiry date: Aug 30, 2004

Classification

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

Abstract

Substituted N-phenylsulfonyl-N'-pyrimidinylureas and N-phenylsulfonyl-N'-triazinylureas of the general formula ##STR1## and the salts thereof with amines, alkali metal bases or alkaline earth metal bases, or with quaternary ammonium bases, have good pre- and postemergence selective herbicidal and growth regulating properties. In the above formula the symbols have the following meanings: PA0 R.sup.1 is hydrogen, halogen, nitro, cyano, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.1 -C.sub.4 alkylsulfinyl, --CO--R.sup.8, --NR.sup.9 R.sup.10, --CO--NR.sup.11 R.sup.12 or --SO.sub.2 --NR.sup.13 R.sup.14, PA0 R.sup.2 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfinyl or C.sub.1 -C.sub.4 alkylsulfonyl, PA0 R.sup.3 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl or cyano, PA0 R.sup.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, PA0 R.sup.5 is hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, PA0 R.sup.6 and R.sup.7 are each independently hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4…