DERIVATIVES OF 1-(2-PYRIDYL)-PYRAZOLE OR THEIR ACID-ADDITIVE SALTS, METHOD OF SYNTHESIS OF 1-(2-PYRIDYL)-PYRAZOLE DERIVATIVES OR THEIR ACID-ADDITIVE SALTS (VARIANTS), INSECTO-ACARICIDO-NEMATOCIDE COMPOSITION AND METHOD OF CONTROL OVER INSECTS, MITES AND NEMATODES Russian patent published in 1997 - IPC

FIELD: organic chemistry, agriculture. SUBSTANCE: product: derivatives of 1-(2-pyridyl)-pyrazole of the general formula (I) where: X - NO₂, -S(O)_nR₃; Y - H, halogen, S(O)_nR₃, NH₂, C₁ - C₄-alkyl or di-^C1 ^-C4-alkylamino, C₁ - C₄-alkoxy-^C1 ^-C4-alkylamino or ^C1 ^-C4-alkylcarbonylamino substituted with one or more halogen atoms; R₁ - chlorine; R₂ - trifluoromethyl or chlorine; R₃ - free ^C1 ^-C4-alkyl or that substituted with one to complete hydrogen substitution with halogen; n = 0-2, or their acid-additive salts. Two variants of synthesis of compounds of the formula (I) where: X - S(O)_nR₃; Y - NH₂ from compounds of the formula (IV) . Insecto-acaricido-nematocide composition has 0.1-50 wt. -% compound of the formula (I) and the special additions - the rest. Method for control over insects, mites and nematodes using compounds of the formula (I) at effective doses. EFFECT: improved method of synthesis. 7 cl, 6 tbl