Pyridine derivatives as pesticides

Details Pyridine derivatives as pesticides Pyridine derivatives as pesticides

1996-06-28

1998-07-21

Fan, Jane

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

514363, 514242, 514255, 514256, 544182, 544333, 544405, C07D28512

Patent

active

057837040

DESCRIPTION:

BRIEF SUMMARY
This is a 371 of PCT/EP94/04222 Dec. 19, 1994 now WO 95/18123 Jul. 6, 1995.
The invention relates to compounds of formula ##STR1## wherein, taking into account the proviso mentioned below, n is 0 or 1, and that is part of the basic ring structure of the heterocyclyl radical to the nitrogen atom (shown in formula I) in the 3-substituent of the pyridine ring, or in salt form, of those compounds, to a process for the preparation of those compounds and tautomers and to the use of those compounds and tautomers, to pesticidal compositions the active ingredient of which is selected from those compounds and tautomers, in each case in free form or in agrochemically acceptable salt form, to a process for the preparation of those compositions and to the use of those compositions, to plant propagation material treated with those compositions, to a method of controlling pests, to intermediates, in free form or in salt form, for the preparation of those compounds, where appropriate to tautomers, in free form or in salt form, of those intermediates, and to a process for the preparation of those intermediates and their tautomers and to the use of those intermediates and their tautomers.
In the literature, certain pyridine derivatives are proposed as insecticidal active ingredients of pesticides. The biological properties of those known compounds are not entirely satisfactory in the field of pest control, however, and there is therefore a need to provide further compounds having pesticidal properties, especially for controlling insects and representatives of the order Acarina. That problem is solved according to the invention by the provision of the present compounds I.
As is familiar to a person skilled in the art, some compounds I may be in the form of tautomers. Accordingly, hereinbefore and hereinafter compounds I are to be understood as including corresponding tautomers, even though the latter are not specifically mentioned in each case.
Compounds I having at least one basic centre are capable of forming, for example, acid addition salts. Those salts are formed, for example, with strong inorganic acids, such as mineral acids, for example perchloric acid, sulfuric acid, nitric acid, nitrous acid, a phosphoric acid or a hydrohalic acid, with strong organic carboxylic acids, such as unsubstituted or substituted, for example halo-substituted, C.sub.1 -C.sub.4 alkanecarboxylic acids, for example acetic acid, or saturated or unsaturated dicarboxylic acids, for example oxalic, malonic, succinic, maleic, fumaric or phthalic acid, or hydroxycarboxylic acids, for example ascorbic, lactic, malic, tartaric or citric acid, or benzoic acid, or with organic sulfonic acids, such as unsubstituted or substituted, for example halo-substituted, C.sub.1 -C.sub.4 alkanesulfonic or arylsulfonic acids, for example methanesulfonic or p-toluene-sulfonic acid. Furthermore, compounds I having at least one acidic group are capable of forming salts with bases. Suitable salts with bases are, for example, metal salts, such as alkali metal or alkaline earth metal salts, for example sodium, potassium or magnesium salts, or salts with ammonia or an organic amine, such as morpholine, piperidine, pyrrolidine, a mono-, di- or tri-lower alkylamine, for example ethylamine, diethylamine, triethylamine or dimethylpropylamine, or a mono-, di- or tri-hydroxy-lower alkylamine, for example mono-, di- or tri-ethanolamine. Where appropriate, corresponding internal salts may also be formed. Preference is given within the scope of the invention to agrochemically advantageous salts, but salts that have disadvantages for agrochemical purposes, for example salts that are toxic to bees or to fish, are also included; the latter salts are used, for example, in the isolation or purification of free compounds I or the agrochemically acceptable salts thereof. In view of the close relationship between the compounds I in free form and in the form of their salts, hereinbefore and hereinafter any reference to the free compounds I or their salts should be understood as including a

REFERENCES:
patent: 4931439 (1990-06-01), Kristinsson
patent: 4996325 (1991-02-01), Kristinsson
patent: 5179094 (1993-01-01), Kristiansen et al.

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