N-PHENYL-MALEIMIDES AND N-PHENYL-SUCCINIMIDES,THEIR PREPARATION,HERBICIDAL AND PLANT GROWTH REGULATING COMPOSITIONS CONTAINING THEM AND INTERMEDIATES THEREFOR

摘要

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 ##STR1## in which |: represent a single or double bond,P PR.sup.1 represents hydrogen or fluorine,P PR.sup. 2 represents halogen,PPY represents C.sub. 1 -C.sub.8 - alkyl,PPZ represents hydrogen or C.sub.1 -C. sub.8 -alkyl, andPPA represents hydrogen or a group ##STR2## 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.