Substituierte 1,2,3,4-Tetrahydro-5-nitro-pyrimidine

摘要

The present invention relates to novel substituted 1,2,3,4-tetrahydro-5-nitro pyridines of formula (I) in which Het is possibly substituted pyridyl or thiazolyl, R<1> is C1-4 alkyl, R<2> is C1-4 alkyl, R<1> and R<2> together with the bordering atoms form a saturated 5 or 6 ring possibly containing N or O as a further hetero-atom and is possibly substituted, A is straight-chained or branched alkylene with at least 2 C atoms, possibly substituted by phenyl, halogen, OH, CN or the radical NR<4>R<5>, in which R<4> or R<5> is hydrogen, C1-4 alkyl or phenyl, and possibly interrupted singly or multiply by O, S, (a) or (b), and further, A is possibly substituted cycloalkylene, R<3> represents the radicals (c) or (d) or (e), in which R<6> is alkyl, cycloalkyl, alkenyl, aryl, aralkyl, heteroaryl, alkoxy, cycloalkoxy, alkenoxy, aryloxy, aralkoxy, heteroaryloxy, alkylthio, arylthio, aralkylthio, heteroarylthio, amino, alkylamino, dialkylamino, arylamino, arylalkylamino, aralkylamino, aralkylalkylamino, in which the radicals may be substituted, X is oxygen or sulphur, R<7> is hydrogen or C1-4 alkyl. Processes for their production and their use as parasiticides and ectoparasiticides.