A series of 3 H-pyrazolo [3, 4-d][1, 2, 3] triazin-4-one derivatives were synthesized as candidate herbicides by diazotization of different 5 (3)-amino-N-phenyl-1 H-pyrazole-4- carboxamide derivatives prepared by the reaction of substituted 5 (3)-amino-pyrazole-4- carbonyl chloride with a substituted aniline. Their structures were identified by 1H NMR and elemental analyses. The isomers D and E were isolated, and their structures were ...
