6-(2,4,6-Trihalophenyl)triazolopyrimidines, their preparation and their use for controlling harmful fungi, and compositions comprising these compounds

摘要

The present invention relates to 6-(2,4,6-trihalophenyl)triazolopyrimidines of the formula I in which the substituents are as defined below: R¹ is alkyl, haloalkyl, cycloalkyl, halocycloalkyl, alkenyl, haloalkenyl, cycloalkenyl, halocycloalkenyl, alkynyl, haloalkynyl or phenyl, naphthyl or a five- or six-member saturated, partially unsaturated or aromatic heterocycle which contains one to four heteroatoms from the group consisting of O, N and S, R² is hydrogen or one of the groups mentioned under R¹, R¹ and R² together with the nitrogen atom to which they are attached may also form a five- or six-membered heterocyclyl or heteroaryl which is attached via N and may contain one to three further heteroatoms from the group consisting of O, N and S as ring members; R¹ and/or R² may be substituted as defined in the description; L¹, L², L³ are chlorine or fluorine, where at least one group is chlorine; X is cyano, alkyl, alkoxy, alkenyloxy, haloalkoxy or haloalkenyloxy; processes for preparing these compounds, compositions comprising them and their use for controlling phytopathogenic harmful fungi.