AMINO KETALS, THEIR PREPARATION, AND THEIR USE AS FUNGICIDES

摘要

Amino ketals having the formula wherein X and Y each independently represents O or -OCH2-, (R<1>)n represents up to four substituents which are the same or different and selected from straight or branched chain alkyl having up to 10 carbon atoms, cycloalkyl having up to 6 carbon atoms, aryl, aryloxy, alkoxy, cycloalkoxy, arylalkyl and alkylthio, where two adjacent R<1>-substituents may also together form a saturated or unsaturated ring, and n is 1, 2, 3 or 4, and m is 0, 1, 2, 3 or 4, and R<2> and R<3> each independently represents hydrogen, straight or branched chain alkyl having up to 10 carbon atoms, unsubstituted or alkylsubstituted cycloalkyl, alkenyl, alkynyl or unsubstituted or alkylsubstituted arylalkyl, or R<2> and R<3> when taken together with the nitrogen atom to which they are attached form a saturated or unsaturated, substituted or unsubstituted heterocyclic ring which may optionally be aryl-fused or cycloalkyl-fused and which may optionally contain one or more additional hetero atoms selected from O and N, with the proviso that if X and Y are both O, m is 1, and -NR<2>R<3> is other than an unsaturated, substituted or unsubstituted heterocyclic ring which may optionally be aryl-fused or cycloalkyl-fused and which may optionally contain one or more additional hetero atoms selected from O and N, then (R<1>)n cannot be a sole substituent (n=1) in the 4-position in the cyclohexane ring and of the formula wherein R represents hydrogen, alkyl or optionally substituted phenyl, and the preparation of these compounds are described. The compounds I have fungicidal, particularly plant-fungicidal activity, and more particularly activity against mildew, rust and other significant foliage diseases on cereals, and they are therefore applicable in fungicidal compositions and in methods for combating fungi, particularly phytopathogenic fungi, and more particularly mildew, rust and other significant foliage diseases on cereals.