| 摘要 |
Compounds of the formula <CHEM> in which A is nitrogen or CR<7>; R<1>, R<2> and R<7> each independently are hydrogen, halogen, formyl, cyano, carboxy or azido, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino. aminoxy or dialkyliminoxy; R<3> is hydrogen, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic, aralkyl or aryl; R<4> is hydrogen or optionally substituted alkyl, alkenyl, aralkyl, aryl, heterocyclic or acyl; and R<5> and R<6> each independently are hydrogen or optionally substituted alkyl, alkoxy, alkenyl, alkynyl, aryl, aralkyl, amino, cycloalkyl or heterocyclic, or a sulphonyl-containing group, or <CHEM> where R<1><1> is alkylthio, or together form <CHEM> where R<9> and R<1><0> each independently are hydrogen, alkyl, alkoxy, aryl, aralkyl or dialkylamino, or R<9> and R<1><0> together form optionally substituted heterocyclic or optionally interrupted alkylene chain; and salts thereof, have herbicidal properties. |
