4-Difluoromethoxy-2-amino-pyrimidines

US4551531A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Willy Meyer · Riehen, CH
• Karl Gass · Magden, CH
• Werner Topfl · Dornach, CH
• Rolf Schurter · Binningen, CH
• Georg Pissiotas · Lörrach, DE

Key dates

• Filing date: Jul 26, 1984
• Grant date: Nov 5, 1985
• Expiry date: Jul 26, 2004

Classification

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

Abstract

The invention relates to N-arylsulfonyl-N'-pyrimidinyl ureas of the general formula ##STR1## and to the salts thereof with amines, alkali metal hydroxides or alkaline earth metal hydroxides or with quaternary ammonium bases. These compounds have good pre- and postemergence selective herbicidal and growth regulating properties. In the formula, R.sub.18 is hydrogen, alkyl or alkoxy, X is an unsubstituted or substituted phenyl radical or an unsubstituted or substituted naphthyl radical, Y is C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 haloalkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.2 -C.sub.3 alkoxyalkyl, halogen or an unsubstituted amino group and Z is oxygen or sulfur.