3-PHENYL-4-METHOXYCARBONYLPYRAZOLES AND THEIR USE FOR CONTROLING UNDESIRABLE PLANT GROWTH

摘要

3-Phenyl-4-methoxycarbonylpyrazole derivatives of the formula (I) where R1 is hydrogen or methyl, R2 is hydrogen, unsubstituted or substituted alkanoyl, methoxycarbonyl or unsubstituted or substituted phenoxycarbonyl, or is hydroxymethyl or methoxymethyl, A and B are each oxygen or sulfur, Z is unsubstituted or substituted alkylene, m, n and p are each zero or 1, X is hydrogen, halogen or nitro and Y is hydrogen, alkyl, alkoxy, haloalkyl, halogen, nitro or cyano, are used for controlling undesirable plant growth.