TRIAZACYCLOHEXANE DERIVATIVE

Novel triazacyclohexane derivatives of the formula I in which R1 is hydrogen or C1-C4-alkyl, R2 is hydrogen, C1-C6-alkyl, C3-C6-cycloalkyl or a radical -CH2B; R3 is hydrogen, C1-C10-alkyl, C3-C6-cycloalkyl, C1-C10-alkyl which is substituted by 1-12 radicals from the series comprising halogen, hydroxyl, C1-C4-alkoxy, C1-C4-haloalkoxy having 1 to 9 halogen atoms, di(C1-C4-alkyl)amino and C1-C5-alkoxycarbonyl, or is C3-C6-cycloalkyl, C2-C8-alkenyl or -alkynyl, each of which is substituted by 1 to 4 C1-C4-alkyl radicals or halogen atoms, or is C2-C8-alkenyl or -alkynyl, phenyl or benzyl, each of which is substituted by 1-6 halogen atoms, or is phenyl or benzyl, each of which is substituted by 1-3 ring substituents from the series comprising halogen, C1-C4-alkyl, C1-C4-haloalkyl having 1 to 9 halogen atoms, C1-C4-alkoxy, C1-C4-haloalkoxy having 1 to (illegible) halogen atoms, C1-C4-alkylthio, nitro and cyano; A is an aromatic or nonaromatic, monocyclic or bicyclic heterocyclic radical which is unsubstituted or mono- to tetrasubstituted and can have one to two substituents from the series comprising C1-C3-haloalkyl having 1 to 7 halogen atoms, cyclopropyl, halocyclopropyl having 1 to (illegible) halogen atoms, C2-C3-alkenyl, C2-C3-alkynyl, C2-C3-haloalkenyl and C2-C3-haloalkynyl having 1 to 4 halogen atoms, C1-C3-haloalkoxy having 1 to 7 halogen atoms, C1-C3-alkylthio, C1-C3-haloalkylthio having 1 to 7 halogen atoms, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, cyano and nitro, and one to four substituents from the series comprising C1-C3-alkyl, C1-C3-alkoxy and halogen; and B is phenyl, cyanophenyl, nitrophenyl, halophenyl having 1 to 3 halogen atoms, phenyl, 3-pyridyl and 5-thiazolyl, each of which is substituted by C1-C3-alkyl, C1-C3-haloalkyl having 1 to 7 halogen atoms, C1-C3-alkoxy or C1-C3-haloalkoxy having 1 to 7 halogen atoms, or 5-thiazolyl which is substituted by one to two substituents from the series comprising C1-C3-alkyl, C1-C3-haloalkyl having 1 to 7 halogen atoms, cyclopropyl, halocyclopropyl, C2-C3-alkenyl, C2-C3-alkynyl, C1-C3-alkoxy, C2-C3-haloalkenyl and C2-C3-haloalkynyl having 1 to 4 halogen atoms, C1-C3-haloalkoxy having 1 to 7 halogen atoms, C1-C3-alkylthio, C1-C3-haloalkylthio having 1 to 7 halogen atoms, allyloxy, propargyloxy, allylthio, propargylthio, haloallyloxy, haloallylthio, halogen, cyano and nitro; or 3-pyridyl which is substituted by one to two radicals from the series comprising C1-C3-haloal