3-PHENYLPYRAZOLE DERIVATIVES, METHOD OF SYNTHESIS OF 3-PHENYLPYRAZOLE DERIVATIVES AND FUNGICIDE COMPOSITION Russian patent published in 1997 - IPC

FIELD: organic chemistry. SUBSTANCE: product: derivatives of 3-phenylpyrazole of the general formula (I) where: X - H, Hal, NO₂, CN, CHO, (C₁-C₄)-Alk-S, (C₁-C₄)-Alk-OCO; Y and Z - independently each of other are H, Hal, NO₂, CN, (C₁-C₄)-Alk, (C₁-C₄)-Alk-O possibly substituted with atoms Hal, (C₁-C₄)-Alk-SO, naphthyl, benzylhydroxy, tri-(C₁-C₄)-Alk-silyl-(C₁-C₄)-Alk being both Y and Z can not be hydrogen, or Y and Z together with carbon atoms with that they bound form 1,3-dioxolane ring possibly substituted with Hal; R - H, chlorothioformyl, benzoyl, (C₁-C₄)-Alk-CO, (C₁-C₄)-Alk-OCO possibly substituted with NO₂ or (C₁-C₄)-Alk-OCO, PhOCO possibly substituted with NO₂ or (C₁-C₄)-Alk-SCO, N-(C₁-C₄)-Alk-CONH₂. Method of synthesis of compounds of the formula (I) where X - Hal and R - H and Z and Y - as indicated above involves interaction of compounds of the formula (II) with halogenating agent. Fungicide composition based on compounds of the formula (I) . Synthesized compounds were used in agriculture. EFFECT: improved method of synthesis. 8 cl, 1 dwg, 9 tbl