Herbicidally effective 1-aryl-4-nitropyrazoles of the general formula (I) ##STR1## in which Hal represents halogen, R.sup.1 and R.sup.3 independently of one another represent cyano, nitro, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, halogenoalkoxy or a radial --S(O).sub.n --R.sup.6 and R.sup.2, R.sup.4 and R.sup.5 independently of one another and independently of R.sup.1 and R.sup.3 represent the same radicals as R.sup.1 and R.sup.3, and additionally represent hydrogen, and wherein R.sup.6 represents alkyl, halogenoalkyl, amino, alkylamino or dialkylamino and n-represents the number 0, 1 or 2 are disclosed.
公式(I)中的具有除草效果的1-芳基-
4-硝基吡唑的一般式为:##STR1## 其中,Hal代表卤素,R.sup.1和R.sup.3分别独立地表示
氰基,硝基,卤素,烷基,烷氧基,烷氧羰基,卤代烷基,卤代烷氧基或一个径向--S(O).sub.n--R.sup.6,R.sup.2,R.sup.4和R.sup.5独立地且独立于R.sup.1和R.sup.3表示与R.sup.1和R.sup.3相同的基团,并且另外表示氢,其中R.sup.6表示烷基,卤代烷基,
氨基,烷基
氨基或二烷基
氨基,n表示数字0、1或2。