3-Aryluracil ester and enamino carboxylate use of a 3-aryluracil herbicidal composition and for the desiccation and / or defoliation of plant processes for the production of herbicidally active compositions and with desiccant and / or defoliating activity for the control of unwanted vegetation for the desiccation and / or defoliation of plants and for the preparation of 3-aryluracil hydroxylamine derived from phenylurea and phenyl isocyanate

摘要

3-Aryluracils of the formula IwhereinA 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; orR6, 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.