Patent number: 6432881
Abstract: 2-Benzoylcyclohexane-1,3-diones of formula I :
where:
R1 and R2 are each hydrogen, mercapto, nitro, halogen, cyano, thiocyanato, alkyl, haloalkyl, alkoxy, alkenyl, alkynyl, —OR3, —OCOR3, —OSO2R3, —S(O)nR3 (n=0, 1, 2), —SO2OR3, —SO2N(R3)2, —NR3SO2R3 or —NR3COR3;
R3 is hydrogen or optionally substituted alkyl, haloalkyl, alkenyl, alkynyl, phenyl or phenylalkyl;
Q is optionally substituted cyclohexane-2-yl-1,3-dione;
X1 is optionally substituted alkylene, propenylene, alkenylene or alkynylene;
R4 is hydrogen or optionally substituted alkyl, alkenyl, alkynyl, phenyl, phenylalkyl;
Het is a three- to six-membered, optionally substituted heterocyclic or heteroaromatic group;
and agriculturally useful salts thereof, processes and intermediates for preparing compounds of formula I, compositions comprising them, and the use of the compounds of formula I and the compositions comprising them for controlling harmful plants are described.
Type:
Grant
Filed:
February 7, 2000
Date of Patent:
August 13, 2002
Assignee:
BASF Aktiengesellschaft
Inventors:
Stefan Engel, Joachim Rheinheimer, Ernst Baumann, Wolfgang von Deyn, Regina Luise Hill, Guido Mayer, Ulf Misslitz, Oliver Wagner, Matthias Witschel, Martina Otten, Helmut Walter, Karl-Otto Westphalen
Patent number: 6172225
Abstract: The invention relates to a novel process for producing thereof hydroxyarenes of the general formula (I)
in which
n represents the numbers 1, 2, 3 or 4,
R represents cyano, carboxyl, formyl, nitro, halogen or represents alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl, alkylcarbonyl or alkoxycarbonyl, each of which is optionally substituted, and
Z represents hydrogen, cyano, nitro, halogen, alkyl, halogenoalkyl, or represents monocyclic or bicyclic, saturated or unsaturated heterocyclyl, heterocyclylamino or heterocyclylimino, each of which is optionally substituted,
characterized in that halogenoarenes of the general formula (II)
in which
n, R and Z are each as defined above and
X represents halogen
are reacted with 3-hydroxy-propionitrile of the formula (III),
HO—CH2CH2—CN (III),
if appropriate in the presence of a reaction auxiliary and if appropriate in the presence of a diluent, at temperatures between 0° C. and 100° C.
Type:
Grant
Filed:
November 12, 1998
Date of Patent:
January 9, 2001
Assignee:
Bayer Aktiengesellschaft
Inventors:
Karl-Heinz Linker, Wilhelm Haas, Otto Schallner, Kurt Findeisen, Roland Andree, Mark Wilhelm Drewes