2-(2-SUBSTITUTED BENZOYL)-4-(SUBSTITUTED IMINO,OXIMINO OR CARBONYL)-1,3-CYCLOHEXANE-DIONES,THEIR PREPARATION AND THEIR USE AS HERBICIDES

摘要

2-Benzoyl-1,3-cyclohexanedione derivs. of formula (I) are new. - X=O or NRq; Rq=H, 1-4C alkyl or 1-4C alkoxy; R=halo, 1-2C alkyl, 1-2C alkoxy, OCF3, OCHF2, NO2, CN, 1-2C haloalkyl or RaS(O)n; n=0 or 2; Ra=1-2C alkyl, CF3 or CHF2; R1=H, 1-4C alkyl or opt substd. phenyl; R2=H or 1-4C alkyl, or R1+R2=2-5C alkylene; R3=H, 1-4C alkyl or opt substd phenyl; R4 and R5=H or 1-4C alkyl; R6=H, 1-4C alkyl or 1-4C haloalkyl; R7 and R8=H, halo, 1-4C alkyl, 1-4C alkoxy, OCF3, CN, NO2, 1-4C haloalkyl, RbS(O)m, NRcRd, ReCO, SO2NRcRd or N(Rc)CORd; m=0-2; Rb=1-4C alkyl (opt. substd by halo or CN), phenyl or benzyl; Rc and Rd=H or 1-4C alkyl; Re=1-4C alkyl or 1-4C alkoxy; provided that R1 and R3 are not both opt substd. phenyl. - Also claimed is a herbicidal compsn contg. a herbicidally active 2-(2-substd. benzoyl)-4-(substd imino, oximino or carbonyl). 1,3-cyclohexanedione (pref (I)) or its salt and an inert carrier.