Patent number: 6500950
Abstract: Benzylidenepyrazolones of the formula I,
where the substituents and the index n have the following meanings:
R1 is unsubstituted or substituted C1-C6-alkyl;
R2 is unsubstituted or substituted C1-C6-alkyl, unsubstituted or substituted C1-C6-alkoxy, halogen, nitro, cyano;
R3 is hydrogen, halogen, nitro, cyano, a group NR5R6, OCOR5, NR5COR6, CO2R5, —COSR5, —CONR5R6, C1-C4-alkoxyiminoalkyl, C1-C6-alkylcarbonyl, unsubstituted or substituted C1-C6-alkyl, unsubstituted or substituted C1-C6-alkoxy, unsubstituted or substituted C1-C6-alkylthio, unsubstituted or substituted C2-C6-alkenyl, unsubstituted or substituted C2-C6-alkynyl, unsubstituted or substituted phenyl, unsubstituted or substituted phenoxy, an unsubstituted or substituted 5- or 6-membered saturated or unsaturated heterocycle which may contain up to 4 nitrogen atoms and/or up to 2 oxygen or sulfur atoms as ring members;
R4 is C1-C6-alkyl, C1-C4-haloalkyl;
R3 and R4 form an optionally substituted saturated or unsaturated
Type:
Grant
Filed:
January 22, 2001
Date of Patent:
December 31, 2002
Assignee:
BASF Aktiengesellschaft
Inventors:
Joachim Rheinheimer, Matthias Witschel, Stefan Engel, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Guido Mayer, Ulf Misslitz, Oliver Wagner, Martina Otten, Karl-Otto Westphalen, Helmut Walter