N-(3-SUBSTITUTED OXYPHENYL)-TETRAHYDROPHTHALIMIDES AND HERBICIDAL COMPOSITION

摘要

The present invention provides N-(3-substituted oxyphenyl)-3,4,5,6-tetrahydrophthalimides which are represented by the general formula (1) wherein X and Y respectively represent hydrogen or a halogen atom; A represents , or -CH2CH=CH; B reprsents or -CN; R1represents a hydrogen atom or an alkyl, phenyl or a phenyl group substituted by at least one of halogen, lower alkyl or nitro groups; R2 represents a hydrogen atom or an alkyl group; R3 represents a hydrogcn atom or an alkyl, alkenyl, alkynyl, haloalkyl, haloalkenyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, alkoxyalkoxyalkyl, alkoxyalkoxyalkoxyalkyl, alkylthioalkyl, cycloalkyl, aralkyl, phenyl, y-butylrolactone group which can be substituted by a methyl group or salt moiety selected from alkali and alkaline earth metals and ammonium groups having 0 to 4 alkyl groups; R4 represents an alkyl, alkoxycarbonylalkyl or benzyl group; R5 represents a hydrogen atom or methyl group; R6 represents a methyl or phenyl group; R7 and R8 can be the same or different and respectively represent a hydrogen atom, an alkyl, alkenyl, alkynyl, haloalkyl, hydroxyalkyl, alkoxyalkyl, aralkyl, phenyl, phenyl substituted by at least one of halogen, lower alkyl and lower alkoxy groups, a 5 or 6 membered heterocyclic ring having at least one nitrogen atom, alkoxy, alkenyloxy, amino, amino mono substituted with lower alkyl or phenyl, di-lower alkyl amino, alkanesulfonyl, benzenesulfonyl, benzenesulfonyl substituted by at least one of halogen, lower alkyl and lower alkoxy groups or cycloalkyl group; R8 can form a 5 to 7 membered nitrogen containing and heterocyclic ring which can contain a -O- atom; and m and n respectively represent an integer of 1 to 3. The compounds are useful as selective herbicides.