申请人:Ciba-Geigy Corporation
公开号:US05625071A1
公开(公告)日:1997-04-29
N-pyridinesulfonyl-N'-pyrimidinyl- and -triazinyl-ureas of formula I ##STR1## wherein R.sub.1 is hydrogen or fluorine; or R.sub.1 together with R.sub.3 is a C.sub.2 -C.sub.4 alkylene chain; R.sub.3 is hydrogen, fluorine or C.sub.1 -C.sub.3 alkyl; R.sub.2 is hydrogen, fluorine or C.sub.1 -C.sub.3 alkyl; R.sub.4 is hydrogen, fluorine, chlorine or C.sub.1 -C.sub.3 alkyl; R.sub.5 is hydrogen, fluorine, chlorine, C.sub.1 -C.sub.3 alkyl, or C.sub.1 -C.sub.3 alkyl substituted by fluorine or chlorine; R.sub.a is hydrogen or halogen, or a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio radical each of which may be unsubstituted or mono- or poly-substituted by halogen; R.sub.b is hydrogen or a C.sub.1 -C.sub.4 alkyl radical; X is C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkyl mono- to tri-substituted by halogen, C.sub.1 -C.sub.3 alkoxy, or C.sub.1 -C.sub.3 alkoxy mono- to tri-substituted by halogen; Y is halogen, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkyl mono- to tri-substituted by halogen, C.sub.1 -C.sub.3 alkoxy, or C.sub.1 -C.sub.3 alkoxy mono- to tri-substituted by halogen, or is cyclopropyl, methylamino or dimethylamino; and E is nitrogen or the methine group, and the salts of those compounds, with the proviso that at least one of the radicals R.sub.1 to R.sub.5 is fluorine, or one of the radicals R.sub.4 and R.sub.5 is chlorine, have good selective-herbicidal properties. The preparation of those compounds and their use as herbicidal active ingredients is described.
式I中的N-吡啶磺酰基-N'-嘧啶基和-三嗪基-脲化合物,其中R.sub.1是氢或氟;或R.sub.1与R.sub.3一起是C.sub.2-C.sub.4烷基链;R.sub.3是氢,氟或C.sub.1-C.sub.3烷基;R.sub.2是氢,氟或C.sub.1-C.sub.3烷基;R.sub.4是氢,氟,氯或C.sub.1-C.sub.3烷基;R.sub.5是氢,氟,氯,C.sub.1-C.sub.3烷基,或C.sub.1-C.sub.3烷基被氟或氯取代;R.sub.a是氢或卤素,或C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4烷氧基或C.sub.1-C.sub.4烷基硫基基团,每个基团可能未取代或单取代或多取代卤素;R.sub.b是氢或C.sub.1-C.sub.4烷基基团;X是C.sub.1-C.sub.3烷基,C.sub.1-C.sub.3烷基单到三取代卤素,C.sub.1-C.sub.3烷氧基,或C.sub.1-C.sub.3烷氧基单到三取代卤素;Y是卤素,C.sub.1-C.sub.3烷基,C.sub.1-C.sub.3烷基单到三取代卤素,C.sub.1-C.sub.3烷氧基,或C.sub.1-C.sub.3烷氧基单到三取代卤素,或是环丙基,甲基氨或二甲基氨;E是氮或甲基基团,以及这些化合物的盐,前提是至少有一个基团R.sub.1到R.sub.5是氟,或者基团R.sub.4和R.sub.5中的一个是氯,具有良好的选择性除草作用。描述了这些化合物的制备及其作为除草活性成分的用途。