FIELD: chemistry.
SUBSTANCE: invention relates to N-(1,2,5-oxadiazol-3-yl)benzamides of formula 
, in which R stands for an alkyl with 1-6 carbon atoms, halogenalkyl with 1-6 carbon atoms, alkoxy with 1-6 carbon atoms, cyano, nitro, methylsulphenyl, acetylamino, methoxycarbonyl, methylcarbonyl, piperidinylcarbonyl, halogen, amino, or heteroaryl, selected from the group, including 1,2,3-triazolyl, 1,2,4-triazolyl, benzisoxazolyl, thiophenyl, pyridinyl and benzimidazol-2-yl, or heterocyclyl, selected from the group, including piperidinyl, respectively selected with s residues, selected from the group, including methyl, ethyl, methoxy and halogen; X and Z independently on each other respectively stand for nitro, halogen, cyano, alkyl with 1-6 carbon atoms, halogenalkyl with 1-6 carbon atoms, alkenyl with 2-6 carbon atoms, OR1, S(O)nR2, alkyl-OR1 with 1-6 carbon atoms in alkyl, or heteroaryl, selected from the group, including 1,2,4-triazolyl; Y stands for nitro, halogen, OR1, S(O)nR2, NR1COR1, O-alkylheterocyclyl with 1-6 carbon atoms in the alkyl, and where heterocyclyl is selected from 1,4-dioxan-2-yl, O-alkyl heteroaryl with 1-6 carbon atoms in the alkyl, and where the heteroaryl is selected from pyrazolyl, alkyl-OR1 with 1-6 carbon atoms in the alkyl, alkyl-NR1SO2R2 with 1-6 carbon atoms in the alkyl, NR1R2, tetrahydrofuranyloxymethyl, tetrahydrofuranylmethoxymethyl, O(CH2)-3,5-dimethyl-1,2-oxazol-4-yl, O(CH2)2-O(3,5-dimethoxypyrimidin-2-yl, O(CH2)-5-pyrrolidin-2-one, O(CH2)-5-2,4-dimethyl-2,4-dihydro-3H-1,2,4-triazol-3-one, or heteroaryl, selected from the group, including 1,2,3-triazolyl and pyrazolyl, or heterocyclyl, selected from the group, including 4,5-dihydro-1,2-oxazol-3-yl and tetrahydropyrimidi-2(1H)-on-1-yl, respectively substituted with s residues, selected from the group, including methyl, methoxy and cyanomethyl; R1stands for hydrogen, alkyl with 1-6 carbon atoms, alkinyl with 2-6 carbon atoms, cycloalkyl with 3-6 carbon atoms, cycloalkylalkyl with 2-6 carbon atoms in the cycloalkyl and 1-6 carbon atoms in the alkyl, phenyl or phenylalkyl with 1-6 carbon atoms in the alkyl, with six last residues being substituted with s residues, selected from the group, including a halogen, OR3 and CON(R3)2; R2 stands for alkyl with 1-6 carbon atoms, alkenyl with 2-6 carbon atoms, cycloalkyl with 3-6 carbon atoms, phenyl or phenyl with 1-6 carbon atoms alkyl, with the five last residues being substituted with s residues, selected from the group, including a halogen, OR3, OCOR3, CO2R3, COSR3 and CON(R3)2; R3 stands for hydrogen or alkyl with 1-6 carbon atoms; n stands for 0, 1 or 2; s stands for 0, 1, 2 or 3. The invention also relates to the application of N-(1,2,5-oxadiazol-3-yl)benzamides of formula (I), as a herbicidal preparation and for fighting undesirable plants.
EFFECT: N-(1,2,5-oxadiazol-3-yl)benzamides, possessing herbicidal activity.
9 cl, 11 tbl
