Heterocyclic dihydrazole compounds and their use for controlling fungal plant diseases

摘要

PCT No. PCT/US96/06533 Sec. 371 Date Nov. 13, 1997 Sec. 102(e) Date Nov. 13, 1997 PCT Filed May 8, 1996 PCT Pub. No. WO96/36633 PCT Pub. Date Nov. 21, 1996Compounds of Formula I, and their N-oxides and agriculturally suitable salts, are disclosed which are useful as fungicides In said formula, E is a ring system selected from certain 5- to 12-membered monocyclic and fused bicyclic aromatic heterocyclic ring systems, or an optionally substituted naphthalene ring as defined in the disclosure; A is O; S; N; NR5; or CR14; G is C or N; provided that when G is C, then A is O, S or NR5 and the floating double bond is attached to G; and when G is N, then A is N or CR14 and the floating double bond is attached to A; W is O; S; NH; N(C1-C6 alkyl); or NO(C1-C6 alkyl); X is OR1; S(O)mR1; or halogen; R1 is C1-C6 alkyl; C1-C6 haloalkyl; C2-C6 alkenyl; C2-C6 haloalkenyl; C2-C6 alkynyl; C2-C6 haloalkynyl; C3-C6 cycloalkyl; C2-C4 alkylcarbonyl; or C2-C4 alkoxycarbonyl; R2 is H; C1-C6 alkyl; C1-C6 haloalkyl; C2-C6 alkenyl; C2-C6 haloalkenyl; C2-C6 alkynyl; C2-C6 haloalkynyl; C3-C6 cycloalkyl; C2-C4 alkylcarbonyl; C2-C4 alkoxycarbonyl; hydroxy; C1-C2 alkoxy; or acetyloxy; R5 is H; C1-C6 alkyl; C1-C6 haloalkyl; C2-C6 alkenyl; C2-C6 haloalkenyl; C2-C6 alkynyl; C2-C6 haloalkynyl; C3-C6 cycloalkyl; C2-C4 alkylcarbonyl; or C2-C4 alkoxycarbonyl; and Y, Z, R14 and m are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula I and a method for controlling plant diseases caused by fungal plant pathogens which involves applying an effective amount of a compound of Formula I.