Herbicidal sulfonylureas

US5591694A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Feb 28, 1994
• Grant date: Jan 7, 1997
• Expiry date: Feb 28, 2014

Classification

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

Abstract

Substituted sulfonylureas of the formula I ##STR1## wherein, inter alia, n and m are each 0 or 1; PA1 X is O, S or N--R.sup.4, where R.sup.4 is hydrogen or alkyl; PA1 A is NO.sub.2, NH.sub.2, OH, CN, SCN, S(O).sub.o R.sup.5, SO.sub.2 NR.sup.6 R.sup.7 or ER.sup.7 ; and environmentally compatible salts of the compounds. The disclosure is also directed to a process for preparing the compounds, to intermediates for the preparation of the compounds and to the use of the compounds as herbicides.