Fungicides
AssigneeBayer CropScience AG
InventorsTracey Cooke, Tennyson Ekwuru, David Hardy, Peter Millward, Brian Moloney, Andrew Pettinger, Peter Stanley Thomas, Richard Michael Turner
Life of this patent
Estimating the term…
Abstract
Compounds of formula (I) or (II): or salts therefor are used as phytopathogenic fungicides wherein the various radicals and substitutents are as defined in the description. Pesticidal compositions contain these compounds together with an agriculturally acceptable diluent or carrier. The compounds and compositions are applied in methods for combating pests.
Claims3
A method of preventing or reducing phytopathogen infestation at a locus in need of such prevention or reduction comprising the step of contacting said locus with at least one compound of formula (I) or (II) or a salt thereof:
- wherein
- A1 is a 2-pyridyl or its N-oxide, each of which may be substituted by up to four groups at least one of which is haloalkyl;
- A2 is heterocyclyl or carbocyclyl, each of which may be substituted;
- R1 and R2, which may be the same or different, are Rb, cyano, nitro, halogen, —ORb, —SRb or optionally substituted amino, or R1 or R2 together with the carbon to which they are attached may form a 3-, 4-, 5- or 6-, carbo- or heterocyclic ring, which may be substituted;
- R3 is Rb, —ORb, or —N(Rb)2, cyano, N-substituted iminomethyl or nitro;
- or R3 and A2, together with the interconnecting atoms, may for a 5- or 6-membered ring;
- L is —C(═X)— or —SO2—, where X is oxygen, sulfur, N—ORb, N—Rb or N—N(Rb)2;
- and
- Y is halogen, —ORb, —SRb, —N(Rb)2, —NRb(ORb) or —NRbN(Rb)2;
- and Rb, which may be the same or different is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted;
- or hydrogen or acyl, or two adjacent Rb groups together with the interconnecting atoms, may form a 5- or 6-membered ring;
- with the proviso that when A1 is 2-pyridyl, R1 is hydrogen, R2 is hydrogen, optionally substituted alkyl or acyl, L is —C(═X)— or —SO2—, X is oxygen or sulfur and R3 is hydrogen or optionally substituted alkyl, A2 is not optionally substituted phenyl.
A pesticidal composition comprising agriculturally acceptable diluent or carrier and a compound of formula (I) or (II), or a salt thereof:
- wherein
- A1 is a 2-pyridyl or its N-oxide, each of which may be substituted by up to four groups at least one of which is haloalkyl;
- A2 is heterocyclyl or carbocyclyl, each of which may be substituted;
- R1 and R2, which may be the same or different, are Rb, cyano, nitro, halogen, —ORb, —SRb or optionally substituted amino, or R1 or R2 together with the carbon to which they are attached may form a 3-, 4-, 5- or 6-, carbo- or heterocyclic ring, which may be substituted;
- R3 is Rb, —ORb, or —N(Rb)2, cyano, N-substituted iminomethyl or nitro;
- or R3 and A2, together with the interconnecting atoms, may for a 5- or 6-membered ring;
- L is —C(═X)— or —SO2—, where X is oxygen, sulfur, N—ORb, N—Rb or N—N(Rb)2;
- and
- Y is halogen, —ORb, —SRb, —N(Rb)2, —NRb(ORb) or —NRbN(Rb)2;
- and Rb, which may be the same or different is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted;
- or hydrogen or acyl, or two adjacent Rb groups together with the interconnecting atoms, may form a 5- or 6-membered ring;
- with the proviso that when A1 is 2-pyridyl, R1 is hydrogen, R2 is hydrogen, optionally substituted alkyl or acyl, L is —C(═X)— or —SO2—, X is oxygen or sulfur and R3 is hydrogen or optionally substituted alkyl, A2 is not optionally substituted phenyl.
A method of combating pests at a locus infested or liable to be infested therewith, which comprises applying to the locus a compound of formula (I) or (II), or a salt thereof:
- wherein
- A1 is a 2-pyridyl or its N-oxide, each of which may be substituted by up to four groups at least one of which is haloalkyl;
- A2 is heterocyclyl or carbocyclyl, each of which may be substituted;
- R1 and R2, which may be the same or different, are Rb, cyano, nitro, halogen, —ORb, —SRb or optionally substituted amino, or R1 or R2 together with the carbon to which they are attached may form a 3-, 4-, 5- or 6-, carbo- or heterocyclic ring, which may be substituted;
- R3 is Rb, —ORb, or —N(Rb)2, cyano, N-substituted iminomethyl or nitro;
- or R3 and A2, together with the interconnecting atoms, may for a 5- or 6-membered ring;
- L is —C(═X)— or —SO2—, where X is oxygen, sulfur, N—ORb, N—Rb or N—N(Rb)2;
- and
- Y is halogen, —ORb, —SRb, —N(Rb)2, —NRb(ORb) or —NRbN(Rb)2;
- and Rb, which may be the same or different is alkyl, alkenyl, alkynyl, carbocyclyl or heterocyclyl, each of which may be substituted;
- or hydrogen or acyl, or two adjacent Rb groups together with the interconnecting atoms, may form a 5- or 6-membered ring;
- with the proviso that when A1 is 2-pyridyl, R1 is hydrogen, R2 is hydrogen, optionally substituted alkyl or acyl, L is —C(═X)— or —SO2—, X is oxygen or sulfur and R3 is hydrogen or optionally substituted alkyl, A2 is not optionally substituted phenyl.
Dependencies are inferred from the claim text.