| abstract |
ABSTRACT "HERBICIDAL FUSED TRICYCLIC 1,3-DIONE DERIVATIVES" The invention concerns novel compounds of the formula I I wherein: m is an integer selected from 1 to 4; n is zero or an integer selected from 1 to 4; X are selected from halogen, nitro, cyano, alkyl, substituted allyl, hydroxy, alkoxy, alkylthio, sulfa-moyl, substituted sulfamoyl, amino, substituted amino, the group -(CH2)pC(=A)Z in which p is zero or one A is oxygen or sulfur, and Z is hydrogen, hydroxy, alkoxy, alkylthio, alkyl, substituted alkyl, amino or substituted amino, the group -NHC(=B)NR7R8 in which B is oxygen or sulfur and R7 and R8 are hydrogen or alkyl; R1 is selected from hydrogen, acyl and an inorganic or organic cation; R2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl, alkynyl and haloalkynyl; R3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl, and phenyl; and R4 is selected from hydrogen, halogen, alkyl, cyano and alkoxycarbonyl. The compounds of the invention show herbicidal properties and plant growth regulating properties and in further embodiments the invention provides pro-cesses for the preparation of compounds of formula I, intermediates useful in the preparation of the com-pounds of formula I, compositions containing as active ingredient a compound of formula I, and herbi-cidal and plant growth regulating processes utilizing compounds of formula I. |