N-Phenylsulfonyl-N'-pyrimidinylureas

US4419121A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Willy Meyer · Riehen, CH
• Werner Fory · Riehen, CH

Key dates

• Filing date: Jan 17, 1983
• Grant date: Dec 6, 1983
• Expiry date: Jan 17, 2003

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01N47/36
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

N-Phenylsulfonyl-N'-pyrimidinylureas of the general formula ##STR1## and the salts thereof with amines, alkali metal 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 PA0 A is a C.sub.1 -C.sub.6 alkyl radical which is substituted by 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 X is oxygen, sulfur, a sulfinyl or sulfonyl bridge, PA0 Z is oxygen or sulfur, PA0 m is 1 or 2, PA0 R.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl, C.sub.1 -C.sub.4 haloalkyl, or a radical --Y--R.sub.5, --COOR.sub.6, --NO.sub.2 or --CO--NR.sub.7 --R.sub.8, R.sub.3 and R.sub.4, each independently of the other, are hydrogen, 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 haloalkyl, halogen or alkoxyalkyl of at most 4 carbon atoms, PA0 R.sub.5 and R.sub.6, each independently of the other, are C.sub.1 -C.sub.5 alkyl, C.sub.2 -C.sub.5 alkenyl or C.sub.2 -C.sub.6 alkynyl, PA0 R.sub.7 and R.sub.8, each independently of the other, are hydro…