N-SUBSTITUTED DICARBOXIMIDE AND HERBICIDE COMPRISING IT AS ACTIVE INGREDIENT

摘要

NEW MATERIAL:An N-substituted dicarboximide shown by the formula I (X is halogen; Y is H, or halogen; Q is heterocyclic ring selected from group shown by the formula II or formula III; A is -O-R<1>, or group shown by the formula IV; R<1> is alkyl, or alkynyl, etc.; R<2> and R<3> are H, alkyl, alkenyl, alkynyl, etc.; or R<2> and R<3> with N atom in the formula form heterocyclic group which may contain O atom). EXAMPLE:N-[4-Chloro-5-( 2-N,N-dimethylcarbamoylvinyl )-2-fluorophenyl]-3,4,5,6- tetrahydrophthalimide. USE:Useful as a herbicide. Having no damage to crops, controlling wild morning glory, bulrush, water nutgrass, etc. which can not be destroyed completely with ease. PREPARATION:For example, an aniline derivative shown by the formula V is reacted with a compound shown by the formula VI at 60-200 deg.C to give a compound shown by the formula I where Q is group shown by the formula II.