The results of the study on the syntheses and properties of halogenanilides derivatives of trichloro- phenoxyacetic acids are presented. Compounds were synthesized during the reaction of trichlorophenoxyacetic chlorides with halogenaniline and N, N-diethylaniline or trichlorophenoxyacetic acids with halogenanilines and phosphorus oxychloride. The chemical derivatives were isolated with high yield and identified on the basis of elemental analysis, FTIR, 1H NMR and 13C NMR spectroscopy as well. Their physico-chemical properties were examined, along with their fungicidal, insecticidal, acaricidal and herbicidal activity. It was found that the highest herbicidal activity characterizes the derivatives of 2,4,5-trichlorophenoxyacet-4-fluoroanilide, 2,4,5-trichlorophenoxyacet-4-chloro-3-(trifluoromethyl) anilide, 2,4,5-trichlorophenoxyacet-3-(trifluoromethyl)anilide and 2,4,5-trichlorophenoxyacet-4-chloro-3-fluoroanilide.
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