| 摘要 |
Herbicidal 3-(substituted benzoxazol-7-yl) and 3-(substituted benzothiazol-7-yl)-1-substituted-6-trifluoromethyl-2,4-(1H,3H)pyrimidinediones, compositions containing them, and methods of using them to control undesired plant growth are disclosed, as are novel intermediates used in the preparation of these compounds. The herbicidal compounds of the present invention are defined by generic structure alpha , in which R is selected from a variety of substituents, including halogen, alkyl, alkenyl, alkynyl, aryl, arylalkyl, alkylarylalkyl, haloalkyl, hydroxy, alkoxy, hydroxyalkyl, haloaryl, haloarylalkyl, alkoxyaryl, sulfhydryl, alkylthio, piperidinyl, alkylamino, alkoxyalkyl, phenoxy, amino, alkylsulfonylamino, arylsulfonylamino, and carboxy; R<1> is alkyl or amino; R<2> is hydrogen or halogen; X is oxygen or sulfur; Y is hydrogen, halogen, alkoxy, cyano, or nitro; and Z is halogen; where halogen is bromine, chlorine, fluorine, or iodine, and each alkyl moiety has one to six carbon atoms.
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