CARBAMATE HERBICIDES

摘要

Substituted N-phenyl- and N-heteroarylalkylcarbamates of formula (I), in which Q is a group (1), (2) or (3); R is halogen, trifluoromethyl, cyano, nitro or C1-C3haloalkoxy; Z is hydrogen or halogen; or Z and R together in the 2- and 3-position of the phenyl ring form a group -OCF2O-; R1 is C1-C5alkyl; R2, R3, R4 and R5, independently of one another, are hydrogen, methyl or ethyl; X is oxygen, sulfur, -SO- or -SO2-; Y is hydrogen, halogen, C1-C3alkyl, C1-C3haloalkyl, C1-C3alkoxy or cyano; n is 0, 1 or 2; n1 is 0 or 1; and m is 0 or 1, with the proviso that m is 1 if Q is group (1) or (2); and the diastereomers and enantiomers thereof, exhibit pre- and post-emergence herbicidal properties. The preparation of these compounds and their use as herbicidally active ingredients are described.