Insecticidal compounds

Abstract

The present invention relates to novel triazole derivatives of formula (I) having insecticidal activity, to processes and intermediates for preparing them, to insecticidal, acaricidal, nematicidal or molluscicidal compositions comprising them and to methods of using them to combat and control insect, acarine, nematode or mollusc pests wherein Y, X 1 , X 2 and Q are as defined in claim 1 ; or salts thereof.

1 . A compound of formula (I): 
       
         
           
           
               
               
           
         
         wherein 
         Y is chlorine or bromine, 
         X 2  is cyano and X 1  is hydrogen, 
         R is hydrogen or C 1 -C 4  alkyl, 
         Q is a group selected from Q1, Q2, Q3, Q4 and Q5, where 
         Q1 is a group of formula (IIa): 
       
       
         
           
           
               
               
           
         
         where the substituents W1 are independently selected from halogen, cyano, nitro, C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, C 1 -C 4  alkoxy and C 1 -C 4  haloalkoxy, and 
         n1 is 1 or 2, 
         Q2 is a group of formula (IIb): 
       
       
         
           
           
               
               
           
         
         where W 2  is selected from hydrogen, halogen, cyano, C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, C 1 -C 4  alkoxy and C 1 -C 4  haloalkoxy, 
         Q3 is a group of formula (IIc): 
       
       
         
           
           
               
               
           
         
         where W 3  is selected from hydrogen, halogen, cyano, C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, C 1 -C 4  alkoxy and C 1 -C 4  haloalkoxy, 
         Q4 is a group of formula (IId): 
       
       
         
           
           
               
               
           
         
         where W 4  is selected from hydrogen, halogen, cyano, C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, C 1 -C 4  alkoxy and C 1 -C 4  haloalkoxy, and 
         Q5 is a group of formula (He) 
       
       
         
           
           
               
               
           
         
         where W 5  is selected from hydrogen, halogen, cyano, C 1 -C 4  alkyl, C 1 -C 4  haloalkyl, C 1 -C 4  alkoxy and C 1 -C 4  haloalkoxy, 
         or an agrochemically acceptable salt thereof. 
       
     
     
         2 . The compound of formula (I) according to  claim 1 , wherein in that Q is Q1. 
     
     
         3 . The compound of formula (I) according to  claim 3 , wherein n1 is 2. 
     
     
         4 . The compound of formula (I) according to  claim 1 , wherein in that R is hydrogen, methyl or ethyl. 
     
     
         5 . The compound of formula (I) according to  claim 1 , selected from: 
       
         
           
           
               
               
           
         
       
     
     
         6 . A method of controlling insects, acarines, nematodes or molluscs which comprises applying to a pest, to a locus of a pest, or to a plant susceptible to attack by a pest an insecticidally, acaricidally, nematicidally or molluscicidally effective amount of a compound of formula (I) as defined in  claim 1 . 
     
     
         7 . An insecticidal, acaricidal, nematicidal or molluscicidal composition comprising an insecticidally, acaricidally, nematicidally or molluscicidally effective amount of a compound of formula (I) as defined in  claim 1  together with an agrochemically acceptable diluent or carrier. 
     
     
         8 . A composition according to  claim 7  which further comprises one or more additional insecticidal, acaricidal, nematicidal or molluscicidal compounds. 
     
     
         9 . A method of protecting useful plants from insects, acarines, nematodes or molluscs, comprising applying to said plants, to the locus thereof, or to plant propagation material thereof, an insecticidally, acaricidally, nematicidally or molluscicidally effective amount of a compound of formula (I) as defined in  claim 1 .