There are disclosed novel herbicidally active pyrrolidine-2,5-diones and 4,5,6,7-tetrahydroisoindolel,3-diones of formula ##STR1## wherein R.sup.1 is hydrogen; or C.sub.1 -C.sub.4 alkyl; R.sup.2 is C.sub.1 -C.sub.4 alkyl; or R.sup.1 and R.sup.2, when taken together, are a (CH.sub.2).sub.4 group which may be substituted by one or two C.sub.1 -C.sub.4 alkyl groups; X is hydrogen; or halogen; A is ##STR2## or O--R.sup.4 ; R.sup.3 is hydroxy; (C.sub.1 -C.sub.8)-alkoxy; (C.sub.1 -C.sub.4)-alkoxy-(C.sub.1 -C.sub.4)-alkoxy-(C.sub.1 -C.sub.4)-akoxy; (C.sub.1 -C.sub.4)-alkylthio-(C.sub.1 -C.sub.4)-alkoxy; mono- or di(C.sub.1 -C.sub.4)-alkylamino-(C.sub.1 -C.sub.4)-alkoxy; (C.sub.1 -C.sub.8)-cyanoalkoxy; (C.sub.3 -C.sub.8)-alkenyloxy; (C.sub.3 -C.sub.8)-haloalkenyloxy; (C.sub.3 -C.sub.8)-alkynyloxy; (C.sub.3 -C.sub.7)-cycloalkoxy; (C.sub.3 -C.sub.7)-cycloalkyl-(C.sub.1 -C.sub.4)-alkoxy; halo(C.sub.3 -C.sub.7)-cycloalkoxy; unsubstituted or substituted benzyloxy, phenoxy or phenylthio; the salt groups --O--Na, --O--K, --O--(Ca).sub.0.5, --O--(Mg).sub.0.5 or --O--NH.sub.4 ; amino; unsubstituted or substituted (C.sub.1 -C.sub.4)-alkylamino or di(C.sub.1 -C.sub.4)-alkylamino; (C.sub.3 -C.sub.4)-alkenylamino; diallylamino; N-pyrrolidino; N-piperidino; N-morpholino; N-thiomorpholino; N-piperidazino; (C.sub.1 -C.sub.8)-alkylthio; (C.sub.3 -C.sub.8)-alkenylthio; benzylthio; unsubstituted or substituted (C.sub.1 -C.sub.4)-alkylthio or (C.sub.1 -C.sub.4)-alkoxy; R.sup.4 is (C.sub.1 -C.sub.8)-alkyl; (C.sub.3 -C.sub.7)-cycloalkyl; (C.sub.3 -C.sub.7)-cycloalkyl-(C.sub.1 -C.sub.4)-alkyl; (C.sub.3 -C.sub.7)-halocycloalkyl; (C.sub.1 -C.sub.8)-alkylcarbonyl; allylcarbonyl; unsubstituted or substituted benzylcarbonyl, benzoyl or dioxolanyl; furoyl; thienoyl; unsubstituted or substituted C.sub.1 -C.sub.4 alkyl. The invention further relates to the preparation of the compounds of formula I, to herbicidal compositions containing them and to the use thereof as herbicides and plant growth regulators, and to novel intermediates for the preparation of these compounds.
披露了新颖的具有除草活性的
吡咯烷-2,5-二酮和
4,5,6,7-四氢异吲哚-1,3-二酮的化合物,其
化学式为##STR1##其中R.sup.1为氢;或C.sub.1-C.sub.4烷基;R.sup.2为C.sub.1-C.sub.4烷基;或当一起取时,R.sup.1和R.sup.2为(CH.sub.2).sub.4基团,该基团可被一个或两个C.sub.1-C.sub.4烷基取代;X为氢;或卤素;A为##STR2##或O--R.sup.4;R.sup.3为羟基;(C.sub.1-C.sub.8)-烷氧基;(C.sub.1-C.sub.4)-烷氧基-(C.sub.1-C.sub.4)-烷氧基-(C.sub.1-C.sub.4)-烷氧基;(C.sub.1-C.sub.4)-烷
硫基-(C.sub.1-C.sub.4)-烷氧基;单烷基或二(C.sub.1-C.sub.4)-烷基
氨基-(C.sub.1-C.sub.4)-烷氧基;(C.sub.1-C.sub.8)-
氰基烷氧基;(C.sub.3-C.sub.8)-烯氧基;(C.sub.3-C.sub.8)-卤代烯氧基;(C.sub.3-C.sub.8)-炔氧基;(C.sub.3-C.sub.7)-环烷氧基;(C.sub.3-C.sub.7)-环烷基-(C.sub.1-C.sub.4)-烷氧基;卤代(C.sub.3-C.sub.7)-环烷氧基;未取代或取代的苄氧基,苯氧基或苯
硫基;盐基--O--Na,--O--K,--O--(Ca).sub.0.5,--O--(Mg).sub.0.5或--O--NH.sub.4;
氨基;未取代或取代的(C.sub.1-C.sub.4)-烷基
氨基或二(C.sub.1-C.sub.4)-烷基
氨基;(C.sub.3-C.sub.4)-烯基
氨基;
二烯丙基氨基;N-
吡咯基;N-
哌啶基;N-吗啉基;N-
硫代吗啉基;N-
哌啶二氮基;(C.sub.1-C.sub.8)-烷
硫基;(C.sub.3-C.sub.8)-烯
硫基;苄
硫基;未取代或取代的(C.sub.1-C.sub.4)-烷
硫基或(C.sub.1-C.sub.4)-烷氧基;R.sup.4为(C.sub.1-C.sub.8)-烷基;(C.sub.3-C.sub.7)-环烷基;(C.sub.3-C.sub.7)-环烷基-(C.sub.1-C.sub.4)-烷基;(C.sub.3-C.sub.7)-卤代环烷基;(C.sub.1-C.sub.8)-烷基羰基;烯丙基羰基;未取代或取代的苄羰基,苯甲酰基或二氧杂
环戊烷基;
呋喃基;
噻吩基;未取代或取代的C.sub.1-C.sub.4烷基。该发明还涉及制备化合物I的方法,含有它们的
除草剂组合物以及将其用作
除草剂和
植物生长调节剂的用途,以及用于制备这些化合物的新中间体。