Patent number: 6323154
Abstract: 3-Aryluracils of the formula I
wherein
A is hydrogen, methyl or amino;
X is oxygen or —N(R7)— (R7=H alkyl, alkenyl, alkynyl, alkylcarbonyl or alkoxyalkyl);
Y1 is oxygen or sulfur;
Z is oxygen or —N(R8)— (R8=H, alkyl, alkenyl, alkynyl or alkoxyalkyl);
R1 is hydrogen or halogen;
R2 is hydrogen, halogen, alkyl, haloalkyl, alkylthio, alkylsulfenyl or alkylsulfonyl;
R3 is hydrogen, halogen or alkyl;
R4 is hydrogen; or optionally substituted alkyl, cycloalkyl, haloalkyl, alkenyl, alkynyl, alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl or alkylsulfonyl,
R5, R6 are hydrogen, alkyl, alkenyl, alkynyl or alkoxyalkyl; or
R6, R8 are together a second chemical bond, methods and intermediates for their manufacture, and their use as herbicides or for the desiccation or defoliation of plants.
Type:
Grant
Filed:
August 26, 1997
Date of Patent:
November 27, 2001
Assignee:
BASF Aktiengesellschaft
Inventors:
Ralf Klintz, Norbert Götz, Peter Schäfer, Gerhard Hamprecht, Elisabeth Heistracher, Christoph-Sweder von dem Bussche-Hünnefeld, Albrecht Harreus, Karl-Otto Westphalen, Helmut Walter, Ulf Misslitz