SUBSTITUTED 4-HYDROXY-6-NITRO-2-PHENILINDOLES, METHOD FOR OBTAINING SAME, APPLICATION THEREOF AS FUNGICIDAL AGENTS AND FUNGICIDAL COMPOSITIONS ON THEIR BASIS Russian patent published in 2008 - IPC C07D209/08 A01N43/38 

FIELD: chemistry.

SUBSTANCE: invention relates to new substituted 4-hydroxy-6-nitro-2-phenylindole of general formula I where R¹ means H, alkyl, R² means H, and/or alcoxyl, and/or halogen, n equals 0-5, except for 4-hydroxy-6-nitro-2-phenilindole. Compounds I including 4-hydroxy-6-nitro-2-phenilindole have fungicidal activity, which allows their use as fungicidal agents. Compounds are obtained from O-(3,5-dinitrophenyl)ketoxims of general formula III where R¹, R² and n have the aforesaid values, their procession with hydrazine hydrate in aliphatic alcohol with boiling in presence of iron salt and activated coal, with obtaining corresponding substituted O-(3-amino-5-nitrophenyl)ketoxims of general formula IV which are subjected to intramolecular cyclisation in mixture of acid and aliphatic alcohol at temperature of mixture boiling.

EFFECT: obtaining 4-hydroxy-6-nitro-2-phenylindole and compositions on its basis, which possess fungicidal activity.

5 cl, 1 tbl, 9 ex