A series of diarylpyrazolecarboxylates and carboxamides were prepared, and their herbicidal activities were investigated. Some of these compounds showed noticeable pre- emergent herbicidal activities against various kinds of weeds. Among the synthesized compounds, methyl 4-chloro-1-(2, 5-difluorophenyl)-5-(4-flurophenyl)-pyzazole-3- carboxylate 19t exhibited good activity. Diarylimidazolecarboxylates and carboxamides ...
