Pyridine-2, 3-dicarboximides their preparation and their use for controlling undesired plant growth

US5959116A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerhard Hamprecht · Weinheim, DE
• Peter Munster · Römerberg, DE
• Matthias Gerber · Schifferstadt, DE
• Helmut Walter · Obrigheim, DE
• Karl-Otto Westphalen · Speyer, DE

Key dates

• Filing date: Jul 12, 1996
• Grant date: Sep 28, 1999
• Expiry date: Jul 12, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D491/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A pyridine-2,3-dicarboxylic acid diester of the formula Va ##STR1## where the radicals R.sup.2 and R.sup.4 have the meanings set out in the specification and where R.sup.8 is a C.sub.1 -C.sub.4 -alkyl, C.sub.3 -C.sub.5 -alkenyl or C.sub.3 -C.sub.5 -alkynyl radical, which may be substituted by halogen, phenyl or C.sub.1 -C.sub.4 -alkoxy.