Novel derivatives of N-phenylmaleic acid imide and N-phenylsuccinimide have good pre- and post-emergence selective herbicidal properties and they influence plant growth. The compounds correspond to the formula I in which .vertline.: represents a single or double bond, R.sup.1 represents hydrogen or fluorine, R.sup.2 represents halogen, Y represents C.sub.1 -C.sub.8 -alkyl, Z represents hydrogen or C.sub.1 -C.sub.8 -alkyl, and A represents hydrogen or a group ##STR1## wherein R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 represent customary organic radicals and X represents oxygen, sulphur, SO, SO.sub.2, NH, alkylimino or alkenylimino.
N-苯基马来
酰亚胺和N-苯基琥珀
酰亚胺的新型衍
生物具有良好的前期和后期选择性除草性能,并影响植物生长。这些化合物符合公式I,其中.vertline.表示单键或双键,R.sup.1表示氢或
氟,R.sup.2表示卤素,Y表示C.sub.1-C.sub.8-烷基,Z表示氢或C.sub.1-C.sub.8-烷基,A表示氢或一个基团##STR1##其中R.sup.3、R.sup.4、R.sup.5、R.sup.6、R.sup.7和R.sup.8表示惯常有机基团,X表示氧、
硫、SO、SO.sub.2、NH、烷基
亚胺或烯基
亚胺。