Aralkyl-phenyl ureas and their herbicidal compositions

Claim 1

An aralkylphenylurea of the formula where R 1 and R 2 are each hydrogen, methoxy, ethoxy or unsubstituted or halogen-, methoxy-, ethoxy-, or cyano-substituted alkyl of 1 to 4 carbon atoms, cyclopropyl, cyclohexyl, allyl, propargyl or sec.-butynyl, or R 1 and R 2 together are an unsubstituted or methyl- or ethyl-substituted alkylene chain of 2 to 8 carbon atoms which may or may not be interrupted by oxygen or sulfur, Y is hydrogen, methyl, tert.-butyl, halogen, methoxy, ethoxy or trifluoromethyl, A is unsubstituted or methyl- or ethyl-substituted alkylene of 1 to 10 carbon atoms, Z is hydrogen, methyl, ethyl, tert.-butyl, trifluoromethyl, methoxymethyl, cyclohexyl, benzyl, phenyl, phenoxy, halogen, a C 4 H 4 chain which is fused to the benzene ring to give a substituted or unsubstituted naphthyl ring, methoxy, ethoxy, isoproxy, hexyloxy, 1,1,2,2-tetrafluoroethoxy, methylthio, thiocyanato, cyano, R' and R" each being hydrogen, methyl, ethyl, methoxy, tert.-butoxy, methylthio, cyclohexyl or unsubstituted or methyl-, halogen- or methoxy-substituted phenyl, and n is 1, 2, 3 or 4, excluding those compounds in which A is (CH 2 ) 2 and, at the same time, R 1 , R 2 and Z are each hydrogen, and those compounds in which A is (CH 2 ) 3 or (CH 2 ) 4 and, at the same time, R 1 is methyl or methoxy, Y is hydrogen or chlorine, Z is hydrogen or C 1 -C 4 -alkyl, and n is 1.