2-AMINO-4-TRICHLOROPYRIDINE DERIVATIVES

摘要

2-Amino-4-trichloromethylpyridines of the general formula I I where R1 is hydrogen or C1-C8-alkyl, R2 is C1-C8-alkyl, C5-C8-cycloalkyl, C2-C4-alkenyl or phenyl, benzyl or phenylsulfonyl, -CX-R3, -SO2R3 or -PX(OR4)2 or R1 and R2 together form =CR5R6 or -CO-Z-CO-, X is oxygen or sulfur, R3 is C1-C20-alkyl, C2-C6-alkenyl, amino, C1-C6-alkylamino, di-C1-C6-alkylamino, morpholino, piperidino, pyrazolidino or C1-C8-alkylcarbonylamino, substituted or unsubstituted phenylamino or benzylamino, R4 is C1-C8-alkyl, C1-C8-haloalkyl or substituted or unsubstituted phenyl, R5 is hydrogen, C1-C4-alkyl, or substituted or unsubstituted phenyl, R6 is substituted or unsubstituted phenyl, Z is substituted or unsubstituted ethylene which may be part of a substituted or unsubstituted cycloalkyl or cycloalkylene radical, substituted or unsubstituted ethenylene which may be part of a substituted or unsubstituted aromatic or heteroaromatic ring, and Z is not part of an unsubstituted phenyl radical, agriculturally useful salts thereof, processes for their preparation and the use thereof as nitrification inhibitors.