Phenylpyrimidines as antidotes for protecting cultivated plants against phytotoxic damage caused by herbicides

Abstract

Phenylpyrimidines of the formula I as defined below are suitable as antidotes for protecting cultivated plants from phytotoxic effects caused by herbicides. These antidotes, either together with the herbicides or also by themselves, are applied to the plants or incorporated in the soil in which the plants grow, or they are used to treat the seeds of the plants. Suitable herbicides are those belonging to the class of the haloacetanilides, haloacetamides, thiocarbamates, carbamates, nitroanilides, triazines, phenylureas, haloacetic acids, phenoxy- and pyridyloxyphenoxyalkanecarboxylic acid derivatives, benzoic acid derivatives etc. The phenylpyrimidines have the formula I ##STR1## wherein n is an integer from 1 to 5, R is hydrogen, halogen, cyano, nitro or hydroxyl, a C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 alkylthio group, which is unsubstituted or mono- or polysubstituted by halogen, C.sub.1 -C.sub.6 alkoxy, C.sub.2 -C.sub.12 alkoxyalkyl, C.sub.1 -C.sub.6 alkylcarbonyl, C.sub.1 -C.sub.6 alkylcarbonyloxy, C.sub.1 -C.sub.6 alkoxycarbonyl, C.sub.2 -C.sub.6 alkenylcarbonyl or C.sub.2 -C.sub.6 alkynylcarbonyl, di(C.sub.1 -C.sub.6)alkylamino, C.sub.1 -C.sub.6 alkylenedioxy, phosphonyl or C.sub.1 -C.sub.6 alkylphosphonyl; or R is a C.sub.2 -C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkenyloxy group or the formyl or carboxyl group; or is a carbonyl or carbonyloxy group which is substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl, amino, di(C.sub.1 -C.sub.6)alkylamino, or by a 5- to 6-membered saturated heterocyclic ring which is bound through the nitrogen atom; or is an amino group which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 alkylcarbonyl; or it is an ureido radical which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy or it is the sulfonyl, a C.sub.1 -C.sub.6 alkylsulfonyl, the sulfamoyl, a C.sub.1 -C.sub.6 alkylsulfamoyl or a C.sub.1 -C.sub.6 alkylcarbonylsulfamoylrest, R.sub.1 and R.sub.3 each independently of the other is halogen, cyano, hydroxyl, sulfhydryl, a C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or C.sub.1 -C.sub.6 ethylthio radical, which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.6 alkoxy; a C.sub.2 C.sub.6 alkenyl or C.sub.2 -C.sub.6 alkynyl radical, a C.sub.3 -C.sub.6 cycloalkyl radical, an amino, C.sub.1 -C.sub.6 alkylamino or di(C.sub.1 -C.sub.6 alkyl) amino, group, a 5- to 6-membered saturated heterocyclic ring, which is bound through the nitrogen atom, a phenyl or phenoxyrest and R.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl or phenyl.

Dependencies are inferred from the claim text.