| abstract |
N-alkenyl heteroaryloxyxyacetamides of formula I wherein Het represents a 5- or 6-membered heteroaromatic group, which optionally contains benzofused nitrogen, selected from the group consisting of azoles, azines and triazines; R1 represents an alkyl, alkoxyalkyl or cycloalkyl group; R2 represents a hydrogen atom, R3 represents an alkyl group, or R2 and R3 taken together form a single bond or a grupomethylene; and R4, R5, R6, R7 and R8 independently represent a hydrogen atom or a C1-4 alkyl group with the conditions that at least two of R4, R5, R6, R7 and R8 must represent an alkyl group; and 2- (5-trifluoromethyl-1,3,4-thiadiazol-2-yloxy) -N-methyl-N- (3,5,5-trimethylcyclohex-1-enyl) -acetamide esexcluid; process for its preparation, compound for its exclusive use in said process, compositions, herbicides containing said compounds as active ingredients, method to combat the growth of unwanted plants in one place. These compounds combine a high herbicidal activity with the necessary selectivity and improved soil degradation. |