3-(4-Cyanophenyl)uracils of the formula I
wherein
A is hydrogen, methyl or amino;
Y is oxygen or sulfur;
R1 is hydrogen or halogen;
R2 is hydrogen, halogen, alkyl, haloalkyl, alkylthio, alkylsulfenyl or alkylsulfonyl;
R3 is hydrogen, halogen or alkyl;
R4 is hydrogen, haloalkyl; or unsubstituted or substituted alkyl, cycloalkyl, alkenyl, alkynyl, alkylcarbonyl, alkenylcarbonyl, alkynylcarbonyl or alkylsulfonyl,
methods and intermediates for their manufacture, and their use as herbicides or for the desiccation or defoliation of plants.
公式I中的3-(4-
氰基苯基)尿
嘧啶,其中A为氢,甲基或
氨基;Y为氧或
硫;R1为氢或卤素;R2为氢,卤素,烷基,卤代烷基,烷基
硫醚,烷基
硫醇或烷基磺酰基;R3为氢,卤素或烷基;R4为氢,卤代烷基;或未取代或取代的烷基,环烷基,烯基,炔基,烷基羰基,烯基羰基,炔基羰基或烷基磺酰基,其制造方法和中间体,以及它们作为
除草剂或用于植物的脱
水或落叶。