uso de compostos, compostos, processo para preprarar os mesmos, agente fungicida, semente, processo para combater fungos nocivos fitopatogênicos, e, uso de compostos

摘要

The present invention relates to novel 5-hydroxypyrazolines of the formula I in which the substituents are as defined below: B is phenyl, naphthyl or 5- or 6-membered hetaryl which contains one to four heteroatoms from the group consisting of O, N and S; A is C-O, C-S or SO₂; R¹ is alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl or haloalkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl, phenyl, 5- or 6-membered heterocyclyl or hetaryl which contains one to four heteroatoms from the group consisting of O, N and S; R² is alkyl, haloalkyl, alkenyl, haloalkyl, alkynyl, haloalkynyl, cycloalkyl, cycloalkenyl, cycloalkynyl, phenyl, 5- or 6-membered hetaryl or heterocyclyl which contains one to four heteroatoms from the group consisting of O, N and S; R³ is hydrogen, nitro, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyl, haloalkenyl, alkynyl, haloalkynyl or NR'₂, where R' independently of one another are hydrogen or alkyl; R⁴ is hydrogen, halogen, nitro, cyano, NR'₂, alkyl, haloalkyl, COOR' or 5- or 6-membered hetaryl or heterocyclyl; where the variables mentioned above may be substituted according to the description; processes for their preparation, their use for controlling harmful fungi and compositions comprising them.