Pyridine compounds which are useful as pesticides

Details Pyridine compounds which are useful as pesticides Pyridine compounds which are useful as pesticides

1997-06-25

1998-06-09

Davis, Zinna Northington

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

504130, 546309, C07D21375, C07D21371, A01N 4340

Patent

active

057634637

DESCRIPTION:

BRIEF SUMMARY
This is a 371 application of PCT/JP96/01096 filed Apr. 23, 1996.


TECHNICAL FIELD

The present invention relates to a novel pyridine derivative and a pesticide containing it as an active ingredient.


BACKGROUND TECHNIQUE

Heretofore, a number of pesticidal compounds have been reported (Japanese Unexamined Patent Publications No. 221990/1993). However, the pyridine derivative of the present invention has not been known.
In recent years, it has been desired to develop a new pesticide which is highly effective at a low dose and which is highly safe.
The present inventors have synthesized various pyridine derivatives and have studied them to find compounds which have high pesticidal, activities and which are highly safe. As a result, it has been found that the compound of the present invention exhibits outstanding pesticidal activities against various pests, particularly against agricultural and horticultural pests including lepidopteran injurious insects represented by beat armyworm (Spodoptera exigua), diamond back (Plutella xylostella) and Asiatic rice borer (Chio suppressalis), and plant pathogens such as rice blast fungus (Piricularia oryzae), wheat powdery mildew fungus (Erysiphe graminis), leaf rust fungus (Puccinia recondita), cucumber downy mildew fungus (Pseudoperonospora cubensis) and apple scrab fungus (Venturia inaequalis). The present invention has been accomplished on the basis of this discovery.


DISCLOSURE OF INVENTION

That is, the present invention provides (1) a pyridine derivative of the formula (I) or its oxide or salt (I): ##STR2## wherein R.sup.1 is a halogen atom, a C.sub.1-6 alkyl group, a C.sub.1-6 haloalkyl group, a C.sub.3-7 cycloalkyl group, a C.sub.1-6 alkoxy group or a C.sub.1-6 haloalkoxy group, provided that a plurality of R.sup.1 may be the same or different, R.sup.2 is a C.sub.2-6 alkenyl group, a C.sub.2-6 alkynyl group, an alkoxyalkyl group, an alkoxycarbonylalkyl group, a group a C.sub.1-10 haloalkyl group, a C.sub.2-6 alkenyl group, a C.sub.2-6 alkynyl group, a C.sub.3-7 cycloalkyl group, a cycloalkylalkyl group, an alkoxyalkyl group, a phenyl group (which may be substituted by a halogen atom, a nitro group, a C.sub.1-6 alkyl group, a C.sub.1-6 haloalkyl group or a C .sub.1-6 alkoxy group), or a benzyl group (which may be substituted by a halogen atom, a nitro group, a C.sub.1-6 alkyl group, a C.sub.1-6 haloalkyl group or a C.sub.1-6 alkoxy group)! or a group of the formula --SNR.sup.9 R.sup.10 (wherein R.sup.9 is a C.sub.1-6 alkyl group, an alkoxycarbonyl group or an alkoxycarbonylalkyl group, and R.sup.10 is a C.sub.1-6 alkyl group, an alkoxycarbonyl group or an alkoxycarbonylalkyl group, provided that R.sup.9 and R.sup.10 may be the same or different); R.sup.3 is a hydrogen atom, a halogen atom, a C.sub.1-6 alkyl group or a C.sub.1-6 alkoxy group; R.sup.4 is a halogen atom, a cyano group, a nitro group, a C.sub.1-6 alkyl group, a C.sub.1-6 haloalkyl group, a group of the formula --COOR.sup.8 (wherein R.sup.8 is a C.sub.1-6 alkyl group, a benzyl group or an alkyl-substituted silylalkyl group), a C.sub.1-6 alkylthio group, a C.sub.1-6 alkylsulfinyl group, a C.sub.1-6 alkylsulfonyl group, a C.sub.1-6 haloalkoxy group or a C.sub.1-6 haloalkylthio group, provided that a plurality of R.sup.4 may be the same or different; each of R.sup.5 and R.sup.6 which may be the same or different, is a hydrogen atom or a C.sub.1-6 alkyl group; Q is a methine group or a nitrogen atom; m is an integer of from 0 to 2; n is an integer of from 0 to 4; and r is an integer of from 1 to 4; and
Now, the terms used in this specification will be defined.
The oxide represents an N-oxide of the nitrogen atom of the pyridine ring of the compound of the formula (I).
The salt represents a salt of the compound of the formula (I) with a mineral acid such as hydrochloric acid, sulfuric acid or nitric acid or with an organic acid such as acetic acid, oxalic acid, citric acid or picric acid.
In the present invention, the halogen atom represents a fluorine atom, a chlorine atom, a bromine atom or an iodine

REFERENCES:
patent: 5399564 (1995-03-01), Hackler et al.

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