Fungicidal 2-pyridyl alkyl amides and their compositions, methods of use and preparation
   
   

The present invention relates to compounds of Formula I: ##STR1##

wherein: ##STR2##

represents a 6-membered heterocyclic aromatic ring in which X1 is N, and X2, X3 and X4 are CR";;

    • wherein R"; is independently H, halogen, cyano, hydroxy, C1-C3 alkyl, C1-C3 haloalkyl, cyclopropyl, C1-C3 alkoxy, C1-C3 haloalkoxy, C1-C3 alkylthio, aryl, C1-C3 NHC(O)alkyl, NHC(O)H, C1-C3 haloalkylthio, C2-C4 alkenyl, C2-C4 haloalkenyl, C2-C4 alkynyl, C2-C4 haloalkynyl or nitro wherein adjacent R"; substituents may form a ring;
    • b) Z is O, S or NORz in which Rz is H or C1-C3 alkyl; and
    • c) A represents
      • (i) C2-C14 alkenyl, or C2-C14 alkynyl, all of which may be branched or unbranched, unsubstituted or substituted with halogen, hydroxy, nitro, aroyl, aryloxy, C1-C8 acyloxy, C1-C6 alkylthio, arylthio, aryl, heteroaryl, heteroarylthio, heteroaryloxy, C1-C6 acyl, C1-C6 haloalkyl, C1-C6 alkoxy or C1-C6 haloalkoxy, and
      • (ii) C3-C14 cycloalkyl, containing 0 heteroatoms and 0-2 unsaturations, substituted with aryloxy, heteroaryloxy, C1-C6 alkylthio, arylthio, heteroarylthia, C1-C6 alkoxy, or C1-C6 haloalkoxy;

        which are useful as antifungal agents, particularly for plants.

    •  
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