Herbicidal sulfonylureas, their preparation and use

US6043196A · kind A · utility

Assignee

• BASF SE

Inventors

• Horst Mayer · Ludwigshafen, DE
• Gerhard Hamprecht · Weinheim, DE
• Karl-Otto Westphalen · Speyer, DE
• Matthias Gerber · Schifferstadt, DE
• Helmut Walter · Obrigheim, DE

Key dates

• Filing date: Jan 5, 1998
• Grant date: Mar 28, 2000
• Expiry date: Jan 5, 2018

Classification

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

Abstract

Sulfonylureas of the general formula I ##STR1## where R.sup.1 is a methyl or ethyl group; PA1 R.sup.2 is C.sub.1 -C.sub.3 -alkoxycarbonyl, a C.sub.1 -C.sub.2 -alkyl group which carries 1 to 5 fluorine atoms, methylsulfonyl, dimethylaminosulfonyl, thiomethyl, methylsulfinyl, methylsulfonyloxy, trifluoromethoxy, difluoromethoxy, difluorochloromethoxy, difluorochloromethyl or nitro; PA1 R.sup.3 is hydrogen, methyl, methoxy, ethoxy, fluorine, chlorine or thiomethyl; PA1 W is hydrogen or chlorine and PA1 Z is CH or N and their agriculturally utilizable salts are described.