Fungicidal trifluoromethylalkylamino-triazolopyrimidines

Abstract

The novel compounds of formula I: wherein (R 1 , R 2 , Hal and L 1 through L 5 are defined in the specification) show selective fungicidal activity. The new compounds may be processed with carriers and adjuvants to produce fungicidal compositions.

1. A compound of formula I 
                 
 
       in which 
       R 1  represents hydrogen or methyl;  
       R 2  represents hydrogen or C 1 -C 10  alkyl  
       Hal represents halogen;  
       and L 1  through L 5  each independently represent hydrogen, halogen, alkyl, alkoxy or nitro; provided that at least one of L 1  through L 5  represents nitro or alkoxy and further provided that when L 3  is alkoxy, L 2  and L 4  are not hydrogen.  
     
     
       2. The compound of  claim 1  wherein at least one of L 1  and L 5  is halogen. 
     
     
       3. The compound of  claim 1  wherein at least one of R 1  and R 2  is hydrogen. 
     
     
       4. A fungicidal composition which comprises a carrier, and as active agent, at least one compound of formula I as defined in  claim 1 . 
     
     
       5. A method of combating fungus at a locus which comprises treating the locus with a fungicidally effective amount of a compound of formula I as defined in  claim 1 . 
     
     
       6. The compound which is:
 5-chloro-6-(4-nitrophenyl)-7-(2,2,2-trifluoroethylamino)-[1,2,4]triazolo[1,5-a]-pyrimidine.