abstract |
The present invention relates to 4-trifluoromethylpyrazolyl substituted pyridines and pyrimidines of formula (I) and their use as herbicides. In the general formula (I), R 1 , R 2 , R 3 and R 4 represent various groups, A represents an aromatic or heteroaromatic group, and Z represents a nitrogen or carbon atom. [Chemical 1] |