Verwendung von Sulfonyloxadiazolonen als Mikrobizide

摘要

Sulfonyloxadiazolones have the formula (I), in which A stands for a simple bond or for alkanediyl, alkenediyl, alkynediyl or a -*O-CH2, -*O-CH2-CH2-, -*CH2-O-, -*CH2-O-CH2-CH2-, -*CH2-S-, -*S-CH2-, (a), (b), (c) or (d) group, the atom preceded by an * being linked to R<1>, and R<3> standing for hydrogen or alkyl; R<1> stands for hydrogen, optionally substituted cycloalkyl, cycloalkenyl, aryl or heterocyclyl; and R<2> stands for optionally substituted alkyl, alkenyl, dialkylamino, aryl or heterocyclyl. These compounds are very useful to control undesirable micro-organisms for the protection of plants and materials. Also disclosed are new sulfonyloxadiazolones of formula (Ia) and a process for preparing these substances. In the formula (Ia), A and R<1> have the above-mentioned meanings and R<4> stands for optionally substituted alkyl, alkenyl, dialkylamino, nitro-substituted phenyl which can still contain one or two other substituents, or optionally substituted heterocyclyl. However, when A stands for a direct bond and R<1> stands for 2,4,5-trimethyl-phenyl, R<4> does not stand for propyl.