Substituted benzoyl derivatives as herbicides

Abstract

What is described are derivatives of benzoyl derivatives of the formula (I) and their use as herbicides. In this formula (I), R 1 , R 2 and R 3 are different radicals, X is a bridge atom selected from the group consisting of oxygen and sulfur and Het is a saturated heterocyclic group which comprises oxygen and carbon atoms.

1 . A compound of the formula (I) or a salt thereof  
       
         
           
           
               
               
           
         
       
       in which the radicals and indices are as defined below: 
 R 1 , R 2  independently of one another are hydrogen, mercapto, nitro, halogen, cyano, thiocyanato, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkynyl, C 3 -C 6 -haloalkynyl, C 3 -C 6 -cycloalkyl, —OR 4 , OCOR 4 , OSO  2 R 4 , S(O) n R 4 , SO 2 OR 4 , SO 2 N(R 4 ) 2 , NR 4 SO 2 R 4 , NR 4 COR 4 , C 1 -C 6 -alkyl-S(O) n R 4 , C 1 -C 6 -alkyl-OR 4 , C 1 -C 6 -alkyl-OCOR 4 , C 1 -C 6 -alkyl-OSO 2 R 4 , C 1 -C 6 -alkyl-SO 2 OR 4 , C 1 -C 6 -alky-SO 2 N(R 4 ) 2  or C 1 -C 6 -alkyl-NR 4 COR 4 ;  
 R 3  is hydrogen, C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl or C 2 -C 6 -alkynyl;  
 R 4  is hydrogen, C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, C 3 -C 6 -cycloalkyl, phenyl or phenyl-C 1 -C 6 -alkyl, where the six last-mentioned radicals are substituted by s radicals selected from the group consisting of hydroxy, mercapto, amino, cyano, nitro, thiocyanato, OR 3 , SR 3 , N(R 3 ) 2 , ═NOR 3 , OCOR 3 , SCOR 3 , NR 3 COR 3 , CO 2 R 3 , COSR 3 , CON(R 3 ) 2 , C 1 -C 4 -alkyliminooxy, C 1 -C 4 -alkoxyamino, C 1 -C 4 -alkylcarbonyl, C 1 -C 4 -alkoxy-C 2 -C 6 -alkoxycarbonyl and C 1 -C 4 -alkylsulfonyl;  
 Het is a fully saturated heterocyclic group whose ring atoms consist of carbon and oxygen atoms, where 
 the total number of ring atoms is p,  
 the number of oxygen atoms is r,  
 the number of carbon atoms is (p-r) and  
 Het may be substituted by n radicals R 5 ;  
 
 n is 0,1 or 2;  
 p is 5,6 or 7;  
 r is 1 or 2;  
 s is 0, 1, 2 or 3;  
 X is O or S(O) n ;  
 R 5  is hydroxy, mercapto, amino, cyano, nitro, halogen, formyl, C 1 -C 6 -alkylamino, C 1 -C 6 -dialkylamino, C 1 -C 6 -alkoxycarbonyl, C 1 -C 6 -alkylcarbonyl, C 1 -C 4 -alkylcarbonyloxy, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 1 -C 6 -alkylthio, C 1 -C 6 -haloalkylthio, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy or R 5  together with the carbon atom to which it is attached forms a carbonyl group;  
 Q is a radical of group Q1 or Q2;  
                     
 R 6 , R 7  independently of one another are hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl or C 3 -C 6 -cyclopropyl;  
 R 8  is hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 1 -C 6 -alkylcarbonyl, C 1 -C 6 -haloalkylcarbonyl, C 1 -C 6 -alkoxycarbonyl, C 1 -C 6 -alkylsulfonyl, C 1 -C 6 -haloalkylsulfonyl, phenylcarbonyl, phenylcarbonylmethyl, phenyloxycarbonyl or phenylsulfonyl, where the phenyl ring of the four last-mentioned radicals is substituted by s radicals selected from the group consisting of halogen, nitro, cyano, C 1 -C 6 -alkyl, C 1 -C 6 -haloalkyl, C 1 -C 6 -alkoxy and C 1 -C 6 -haloalkoxy.  
 
     
     
         2 . A compound as claimed in  claim 1 , in which 
 R 1 , R 2  independently of one another are hydrogen, nitro, halogen, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -alkynyl, C 2 -C 6 -haloalkynyl , C 3 -C 6 -cycloalkyl, —OR 4 , S(O) n R 4 , SO 2 OR 4 , SO 2 N(R 4 ) 2 , NR 4 SO 2 R 4  or C 1 -C 6 -alkyl-S(O) n R 4 ;    R 4  is hydrogen, C 1 -C 4 -alkyl, C 2 -C 4 -alkenyl, C 2 -C 4 -alkynyl, C 3 -C 6 -cycloalkyl, phenyl or phenyl-C 1 -C 4 -alkyl, where the six last-mentioned radicals are substituted by s radicals selected from the group consisting of cyano, nitro, R 3 , OR 3 , SR 3  and N(R 3 ) 2 .    
     
     
         3 . A compound as claimed in  claim 1 , in which 
 R 3  is hydrogen;    R 5  is cyano, nitro, halogen, C 1 -C 4 -alkoxycarbonyl, C 1 -C 4 -alkylcarbonyl, C 1 -C 4 -alkylcarbonyloxy, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkylthio, C 1 -C 4 -haloalkylthio, C 1 -C 6 -alkoxy, C 1 -C 6 -haloalkoxy, or R 5  together with the carbon atom to which it is attached forms a carbonyl group.    
     
     
         4 . A compound as claimed in  claim 1 , in which 
 R 6 , R 7  independently of one another are hydrogen or C 1 -C 4 -alkyl;    R 8  is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkylcarbonyl, C 1 -C 4 -haloalkylcarbonyl, C 1 -C 4 -alkoxycarbonyl, C 1 -C 4 -alkylsulfonyl, C 1 -C 4 -haloalkylsulfonyl, phenylcarbonyl, phenylcarbonylmethyl, phenyloxycarbonyl or phenylsulfonyl, where the phenyl ring of the four last-mentioned radicals is substituted by s radicals selected from the group consisting of halogen, nitro, cyano, C 1 -C 4 -alkyl, C 1 -C 4 -haloalkyl, C 1 -C 4 -alkoxy and C 1 -C 4 -haloalkoxy.    
     
     
         5 . A compound as claimed in  claim 1 , in which 
 R 1  is chlorine, bromine, iodine, nitro, methyl, thiomethyl, thioethyl, methylsulfonyl, ethylsulfonyl or methoxy;    R 2  is bromine, chlorine, methylsulfonyl or ethylsulfonyl;    R 2  is located in the 4-position of the phenyl rings;    R 8  is hydrogen,    Het is 3-tetrahydrofuranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 1,3-dioxan-5-yl or γ-butyrolacton-2-yl.    
     
     
         6 . A herbicidal composition which comprises a herbicidally effective amount of at least one compound of the formula (I) as claimed in  claim 1 .  
     
     
         7 . A herbicidal composition as claimed in  claim 6  in a mixture with formulation auxiliaries.  
     
     
         8 . A method for controlling unwanted plants, which comprises applying an effective amount of at least one compound of the formula (I) as claimed in  claim 1  or of a herbicidal composition as claimed in  claim 6  or  7  to the plants or the site of the unwanted vegetation.  
     
     
         9 . A method of use of a compound of the formula (I) as claimed in  claim 1  or of a herbicidal composition as claimed in  claim 6  or  7  for controlling unwanted plants.  
     
     
         10 . The method as claimed in  claim 9 , wherein the compound of the formula (I) is used for controlling unwanted plants in crops of useful plants.  
     
     
         11 . The method as claimed in  claim 10 , wherein the useful plants are transgenic useful plants.