Pyrazole herbicides

US5731267A · kind A · utility

Assignee

• Novartis AG · CH

Inventors

• Georg Pissiotas · Lörrach, DE
• Kurt Nebel · Hochwald, CH
• Hans-Georg Brunner · Lausen, CH

Key dates

• Filing date: Mar 19, 1997
• Grant date: Mar 24, 1998
• Expiry date: Mar 19, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D307/85
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I ##STR1## in which R is hydrogen, fluorine or chlorine; PA1 R.sub.1 is hydrogen, halogen, trifluoromethyl, C.sub.1 -C.sub.4 haloalkoxy, cyano, nitro or amino; PA1 A-B is a group ##STR2## in which the 2 carbon atom is bonded to the oxygen atom; W is a group ##STR3## R.sub.2 is hydrogen or C.sub.1 -C.sub.6 -alkyl; R.sub.3 is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl, cyano-C.sub.1 -C.sub.4 alkyl, hydroxy-C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy-C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 alkenyloxy-C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.6 alkynyloxy-C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.6 alkylcarbonyloxy-C.sub.1 -C.sub.6 alkyl, carboxyl, C.sub.1 -C.sub.6 alkoxycarbonyl, C.sub.1 -C.sub.6 haloalkoxycarbonyl, C.sub.3 -C.sub.6 alkenyloxycarbonyl, C.sub.3 -C.sub.6 alkynyloxycarbonyl, C.sub.3 -C.sub.6 cycloalkoxycarbonyl, C.sub.1 -C.sub.4 alkoxy-C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylaminocarbonyl, di-C.sub.1 -C.sub.4 alkylaminocarbonyl, aminocarbonyl, benzyloxycarbonyl, phenyloxycarbonyl, C.sub.1 -C.sub.4 alkyl-SO.sub.2 NHC(O)--, C.sub.1 -C.sub.6 alkyl -ON.dbd.CH--, C.sub.1 -C.sub.6 alkoxycarbonyl-C.sub.1 -C.sub.4 alkyl, C.sub.1 -C…