| 摘要 |
<p>Compounds of formula I <CHEM> wherein n is 1 to 6; m is 0 to 2n+2; X is oxygen, sulphur, sulphinyl or sulphonyl; R<1>, R<2> and R<3> are each, independently, hydrogen, halogen, formyl, cyano, carboxy, azido or optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy, or dialkyliminoxy; Z is hydrogen, halogen, hydroxy, or optionally substituted alkoxy, alkenyloxy, alkynyloxy, cycloalkoxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, sulphonamido, aminoxy or dialkyliminoxy; and Y is halogen, cyano, carboxy, or optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, aryloxy, alkylcarbonyl or alkoxycarbonyl; and carboxylic acid salts thereof, their preparation and their use as herbicides. l</p> |
