N-ISOINDOL-DIONE-SUBSTITUTED PHENYLUREA COMPOUNDS HAVING HERBICIDAL ACTIVITY

摘要

The present invention discloses herbicidal N-isoindol-dione-substituted phenylurea compounds of formula (I),wherein X is hydrogen, halogen, cyano or methyl, wherin halogen is F or Cl, Y is hydrogen or halogen, wherin halogen is F or Cl, R<SUP>1</SUP> is (C<SUB>1</SUB>-C<SUB>6</SUB>) linear or branched alkyl, (C<SUB>1</SUB>-C<SUB>6</SUB>) haloalkyl, mono- or multi-substituted phenyl, or mono- or multi-substituted benzoyl, and R<SUP>2</SUP> is hydrogen, (C<SUB>1</SUB>-C<SUB>4</SUB>) linear or branched alkyl. When the compounds are applied in the soil treatment at preemergence or the setm and foliage treatment at postemergence at 75 g ai/ha, they show good herbicidal activity against dicotyledonous weeds such as Abutilon theophrasti, Chenopodium album, Amaranthus ascedense and the like that the control efficacy is more than 80%, and show certain control efficacy against some monocotyledonous weeds such as Digitaria sanguinalis, Echinochloa crus-galli and Setaria viridis and the like.