Bicyclic 5-Hydroxypyrazolines, Method For Producing the Same and Agents Comprising the Same

摘要

Bicyclic 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 together with R¹ or R⁴ is C₃-C₄-alkylene or C₃-C₄-alkenylene, which groups may be defined according to the description, R³ is hydrogen, nitro, cyano, NR''₂, alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyl, haloalkenyl, alkynyl or haloalkynyl, where R'' independently of one another are hydrogen or alkyl; R⁴ is hydrogen, halogen, nitro, cyano, NR''₂, alkyl, haloalkyl, COOR'', 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.