Use of 2-(n-phenylamino)pyrimidines as fungicides, and novel 2-(n-phenylamino) pyrimidines

The present invention relates to the use of 2-(N-phenylamino)pyrimidines of the formula I, 2-(N-phenylamino)pyrimidines of the formula I, where:R, Rindependently of one another are cyano, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, where the radicals alkyl, alkenyl and alkynyl may be substituted by cyano, halogen, C-C-alkoxy or C-C-alkoxycarbonyl, or are C-C-cycloalkyl or a group C( NOR)RRis halogen, C-C-alkyl, C-C-alkenyl, C-C-alkynyl, where the radicals alkyl, alkenyl and alkynyl may be substituted by cyano, halogen, C-C-alkoxy or C-C-alkoxycarbonyl, orRand Rtogether with the two linking carbon atoms form a fused-on partially unsaturated 4- to 8-membered ring which may be up to trisubstituted by identical or different substituents selected from the group consisting of C-C-alkyl, halogen and C-C-alkoxy-carbonyl, which may contain a carbonyl group and/or, in addition to the multiple bond of the pyrimidine ring, a double bond and/or which may be interrupted by O, S or N-(C-C-alkyl);the substituents Rto R, R, R, Rand Rare as defined in the description;are used as fungicides.