| 摘要 |
<p>New phenoxypropionic acid derivatives of the formula < IMG > in which R1 represents a radical of the formula < IMG > wherein X1 represent hydrogen or halogen, X2 represents halogen or trifluoromethyl, X3 represents halogen or trifluoromethyl, X4 represents hydrogen or halogen and X5 represents hydrogen or halogen, Y represents oxygen or the radical SOm, wherein m represents 0, 1 or 2, and R2 and R3 independently of one another represent hydrogen, halogen, alkyl with 1 to 4 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, nitro, cyano or alkoxycarbonyl with 1 to 4 carbon atoms in the alkoxy group, processes for the preparation of the new compounds and their use as herbicides. Novel intermediates for the preparation of the phenoxypropionic acid derivatives of the formula (I) and a process for the synthesis of said new intermediates.</p> |
