2-(2-substituted benzoyl)-4-(substituted oxy or substituted thio)-1,3-cyclohexanediones, a process for their production and a herbicidal composition containing them.

摘要

Compounds of the formula <CHEM> wherein X is oxy, thio, sulfinyl or sulfonyl; R is halogen; C1-C2 alkyl; C1-C2 alkoxy; trifluoromethoxy; difluoromethoxy; nitro; cyano; C1-C2 haloalkyl; R<a>SOn- wherein n is 0 or 2 and R<a> is C1-C2 alkyl, trifluoromethyl or difluoromethyl; R<1> is hydrogen, C1-C4 alkyl, phenyl or substituted phenyl; R<2> is hydrogen or C1-C4 alkyl; or R<1> and R<2> together are C2-C5 alkylene; R<3> is hydrogen, C1-C4 alkyl, phenyl or substituted phenyl with the proviso that R<1> and R<3> are not both phenyl or substituted phenyl; R<4> is hydrogen or C1-C4 alkyl; R<5> is hydrogen or C1-C4 alkyl; R<6> is hydrogen, C1-C4 alkyl, C1-C4 haloalkyl, or phenyl; R<7> and R<8> independently are (1) hydrogen; (2) halogen; (3) C1-C4 alkyl; (4) C1-C4 alkoxy; (5) trifluoromethoxy; (6) cyano; (7) nitro; (8) C1-C4 haloalkyl; (9) R<b>SOn- wherein n is the integer 0, 1 or 2; and R<b> is (a) C1-C4 alkyl; (b) C1-C4 alkyl substituted with halogen or cyano; (c) phenyl; or (d) benzyl; (10) -NR<c>R<d> wherein R<c> and R<d> independently are hydrogen or C1-C4 alkyl; (11) R<e>C(O)- wherein R<e> is C1-C4 alkyl or C1-C4 alkoxy; or (12) -SO2NR<c>R<d> wherein R<c> and R<d> are as defined; and (13) -N(R<c>)C(O)R<d> wherein R<c> and R<d> are as defined; and their salts.