Method to control insects resistant to common insecticides

Abstract

N-Substituted sulfoximines are effective at controlling insects resistant to common insecticides.

1 . A method to control certain insects that have developed resistance to one or more classes of insecticides, including neonicotinoids, organophosphates, carbamates and pyrethroids, which comprises applying to a locus where control is desired an insect-inactivating amount of a compound of the formula (I) 
       
         
           
           
               
               
           
         
         wherein 
         X represents NO 2 , CN or COOR 4 ; 
         L represents a single bond or R 1 , S and L taken together represent a 5- or 6-membered ring; 
         R 1  represents methyl or ethyl; 
         R 2  and R 3  independently represent hydrogen, methyl, ethyl, fluoro, chloro or bromo; 
         n is an integer from 0-3; 
         Y represents 6-halopyridin-3-yl, 6-(C 1 -C 4 )alkylpyridin-3-yl, 6-(C 1 -C 4 )haloalkylpyridin-3-yl, 6-(C 1 -C 4 )alkoxypyridin-3-yl, 6-(C 1 -C 4 )haloalkoxypyridin-3-yl, 2-chlorothiazol-4-yl, or 3-chloroisoxazol-5-yl when n=0-3 and L represents a single bond, or Y represents hydrogen, C 1 -C 4  alkyl, phenyl, 6-halopyridin-3-yl, 6-(C 1 -C 4 )alkylpyridin-3-yl, 6-(C 1 -C 4 ) haloalkylpyridin-3-yl, 6-(C 1 -C 4 )alkoxy-pyridin-3-yl, 6-(C 1 -C 4 )haloalkoxypyridin-3-yl, 2-chlorothiazol-4-yl, or 3-chloroisoxazol-5-yl when n=0-1 and R 1 , S and L taken together represent a 5- or 6-membered ring; and 
         R 4  represents C 1 -C 3  alkyl. 
       
     
     
         2 . The method of  claim 1  in which X in the compound of Formula I represents CN. 
     
     
         3 . The method of  claim 1  in which the compound of Formula I is 
       
         
           
           
               
               
           
         
       
       wherein X, R 1 , R 2 , R 3  and n are as previously defined. 
     
     
         4 . The method of  claim 3  in which X represents CN, R 1  represents methyl, R 2  and R 3  independently represent hydrogen, methyl or ethyl and n=1. 
     
     
         5 . The method of  claim 1  in which the compound of Formula I is 
       
         
           
           
               
               
           
         
       
       wherein X represents CN and Y represents 6-chloropyridin-3-yl or 6-trifluoromethylpyridin-3-yl.