CARBOXAMIDE DERIVATIVE, HERBICIDE COMPOSITION AND A METHOD OF WEEDS INHIBITION Russian patent published in 1995 - IPC

FIELD: organic chemistry. SUBSTANCE: product: derivative of carboxamide of the formula (I) where Z oxygen or sulfur atom; hydrogen, halogen; R₂ hydrogen, C₁-C₄-alkyl; q 0 or 1; R₃ hydrogen, C₁-C₄-alkyl or C₂-C₄-alkenyl-group; group X or every of X-groups means independently halogen atom, C₁-C₄-alkyl, trifluoromethyl, C₁-C₄-alkoxy-, trifluoromethoxy-, C₂-C₄-alkenyloxy-, cyano-, nitro-, carboxy-, C₁-C₄-alkoxycarbonyl, amido-, di-C₁-C₄-alkyl, amido-, C₁-C₄-alkylthio-, ethylthiocarbonyl, methylsulfonyl or ethoxyiminomethyl; n 0 or 2; Y or every of Y-group means independently halogen atom, C₁-C₄-alkyl, nitro-, cyano-, trifluoromethyl, C₁-C₄-alkoxy- or trifluoromethoxy-group; m 0, 2, 3 or 4. Herbicide composition is prepared on the basis of carboxamide derivative of the formula (I) at concentration 0.164-95 wt. -% Method of struggle against weeds involves the use of this composition at consumption 1-10 kg/ha by active substance. Structure of compound of the formula (I) is given in description text. Synthesized compounds were used in agriculture. EFFECT: improved method of synthesis. 4 cl