3-phenyl-4-methoxycarbonylpyrazoles and their use for controlling undesirable plant growth

Abstract From the Canadian patent

O.Z. 0050/36717, Abstract of the Disclosure: 3-Phenyl-4-methoxycarbonylpyrazole derivatives of the formula, (I) where R1 is hydrogen or methyl, R2 is hydrogen unsubsti-, tuted or substituted alkanoyl methoxycarbonyl or unsub-, stituted or substituted phenoxycarbonyl or is hydroxy-, methyl 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.