3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives

US5780394A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bernd-Wieland Kruger · Wittlich, DE
• Reiner Fischer · Monheim, DE
• Heinz-Jurgen Bertram · Holzminden, DE
• Thomas Bretschneider · Lohmar, DE
• Stefan Bohm · Cologne, DE
• Andreas Krebs · Odenthal, DE
• Thomas Schenke · Odenthal, DE
• Hans-Joachim Santel · Leverkusen, DE
• Klaus Lurssen · Wittlich, DE
• Robert R. Schmidt · Cologne, DE
• Christoph Erdelen · Leichlingen, DE
• Ulrike Wachendorff-Neumann · Neuwied, DE
• Wilhelm Stendel · Wuppertal, DE

Key dates

• Filing date: Jan 23, 1997
• Grant date: Jul 14, 1998
• Expiry date: Jan 23, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D487/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

There are provided new 3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives of the formula (I) ##STR1## in which A and B are identical or different and independently of one another in each case represent hydrogen, alkyl, alkenyl, alkynyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl or optionally substituted aryl or PA1 A and B together represent the bivalent radical of a saturated or unsaturated, optionally substituted, mono-, bi-, tri- or polycyclic system, PA1 X represents alkyl, halogen or alkoxy, PA1 Y represents hydrogen, alkyl, halogen, alkoxy or halogenoalkyl, PA1 Z represents alkyl, halogen or alkoxy PA1 n represents a number 0, 1, 2 or 3, PA1 G represents hydrogen (a) or the groups ##STR2## in which E represents a metal ion equivalent or an ammonium ion, PA1 L and M represents oxygen and/or sulphur, PA1 and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 have the meaning given in the text of the application. The new 3-hydroxy-4-aryl-5-oxo-pyrazoline derivatives of the formula (I) have a particularly pronounced activity against animal pests, in particular against insects and arachnids, and against weeds.