| 摘要 |
<p>1-Aryl-pyrazoles of the general formula <IMAGE> in which Hal represents halogen, R1 and R3 independently of one another represent cyano, nitro, halogen, alkyl, alkoxy, alkoxycarbonyl, halogenoalkyl, halogenoalkoxy or a radical -S(O)n-R6 and R2, R4 and R5 independently of one another and independently of R1 and R3 represent the same radicals as R1 and R3, and additionally represent hydrogen, and wherein R6 represents alkyl, halogenoalkyl, amino, alkylamino or dialkylamino and n-represents the number 0, 1 or 2 are disclosed. These compounds can be nitrated to form herbicially effective 1-aryl-4-nitropyrazoles.</p> |
