| 摘要 |
Known herbicides of the formula (I) <IMAGE> (I) in which R1 is alkyl, alkenyl or alkynyl, which are optionally substituted by halogen, alkoxy or alkoxycarbonyl, R2 is H, alkyl, alkenyl, alkynyl or cycloalkyl, R3 and R4 are H or alkyl, R5 and R6 are H, alkyl or alkoxy, each of which can be substituted by halogen, alkoxy or alkylthio, or are halogen, alkylthio, alkylamino or dialkylamino, or, if R2 or R3 is H, their salts with bases, can be obtained when compounds of the formula II R1-SO2-NR2-SO2-NR3-CO-OR7(II) in which R1, R2 and R3 are as defined above, are reacted with compounds of the formula III <IMAGE> (III) in which R4, R5 and R6 are as defined above and R7 is alkyl, haloalkyl or optionally substituted phenyl, in an inert organic solvent, to give the compounds of the formula I. |
