EP1027334A1

EP1027334A1 - Substituted 2-(2'-pyridyloxy)phenyl acetamides as fungicides and pesticides

Info

Publication number: EP1027334A1
Application number: EP98956860A
Authority: EP
Inventors: Wassilios Grammenos; Klaus Oberdorf; Hubert Sauter; Andreas Gypser; Herbert Bayer; Markus Gewehr; Thomas Grote; Bernd Müller; Arne Ptock; Franz Röhl; Gerhard Hamprecht; Norbert Götz; Eberhard Ammermann; Gisela Lorenz; Siegfried Strathmann
Original assignee: BASF SE
Current assignee: BASF SE
Priority date: 1997-10-29
Filing date: 1998-10-21
Publication date: 2000-08-16
Also published as: DE19747788A1; CA2306119A1; SK4582000A3; AU1335399A; EA200000388A1; PL340403A1; BR9813341A; US6372766B1; WO1999021833A1; HUP0004738A2; IL135257A0; ZA989808B; JP2001521024A

Abstract

The invention relates to substituted 2-(2'-pyridyloxy)phenyl acetamides of formula (I), in which the substituents have the following meaning: R<1> = fluorine, chlorine, CH3 or halomethane; R<2> = fluorine, bromine, alkyl or halomethane; R<3> = hydrogen or one of the radicals cited in R<2> and additionally R<2> = 6-chlorine when R<3> stands for hydrogen, R<3> = 5-chlorine when R<2> stands for fluorine, and the compound in which R<1>, R<2> and R<3> stand for chlorine, whereby R<1> cannot stand for chlorine when R<2> stands for 5- trifluoromethyl and R<3> represents hydrogen. The invention further relates to the methods for the production and the use thereof to combat fungi and animal pests.

Description

SUBSTITUTED 2- (2'-PYRIDYLOXY) PHENYL ACETIC ACID AMIDES AS FUNGICIDES AND PESTICIDES

description

The present invention relates to substituted 2- (2'-pyridyloxy) p enylacetic acid amides of the formula I,

NHCH

in which the substituents have the following meaning

R ^{1 is} fluorine, chlorine, CK ₃ or halomethyl; R ^{2 is} fluorine, bromine, Cχ-C alkyl or halomethyl;

R ^{3 is} hydrogen or one of the radicals mentioned for R ² ;

or

R ² 6-chlorine when R ^{3 is} hydrogen, R ³ 5-chlorine when R ^{2 is} fluorine, and the compound in which R ¹ , R ² and R ^{3 are} all chlorine;

with the proviso that R ¹ cannot represent chlorine if R ^{2 is} 5-trifluoroethyl and R ^{3 is} hydrogen.

In addition, the invention relates to processes for the preparation of the compounds I, and agents and the use of the compounds I for controlling harmful fungi and animal pests.

α-Phenyl-u-alkoximinoacetic acid amides with ortho-standing hetero-aryloxy grouping have already been described in EP-A 398 692, EP-A 629 609 and EP-A 760 363. The compounds described in the cited documents are used as crop protection agents against harmful fungi and z. T. suitable as bactericides.

However, their effects are not always completely satisfactory. It is therefore an object of the present invention to find compounds with improved activity.

We have found that this object is achieved by the phenylacetic acid derivatives of the formula I. Furthermore, processes for the preparation of the compounds I and the use of the compounds I and these were included Agents found to control harmful fungi and animal pests. The fungicidal activity is preferred.

The compounds of the formula I differ from the compounds known from the abovementioned publications in the substitution of the 2-pyridinyloxy group which must be substituted in the 3-position by the specially designed radical R ¹ and unsubstituted in the 4-position. The compounds of the formula I have an increased activity against harmful fungi and animal pests compared to the known compounds.

The compounds of formula I can be obtained per se analogously to the methods described in EP-A 760 363.

In particular, compounds of the formula Ia are obtained by the following synthetic route:

The condensation of the benzyl alcohol of the formula Ha with 2-halopyridines in the formula purple, in which [Hai] represents halogen, such as chlorine or bromine, takes place under conditions known per se [cf. EP-A 760 363; EP-A 398 692].

2-Halogenpyridines of the formula purple are either commercially available or can be prepared by methods known from the literature [cf. US 4,279,913; US 4,491,468; JP-A 58/206 563; J. Org. Chem, pp. 1726ff. (1989)].

2-Halogenpyridines of the formula purple can also be obtained from the 2-hydroxypyridines of the formula Illb 'by halogenation, for example with POCl ₃ . The halogenation takes place under known conditions [cf. Houben-Weyl, Methods of Organic Chemistry, Vol. 5/3, 4th edition, p. 924ff., Thieme Verlag Stuttgart and New York (1962)].

The benzyl alcohol of the formula Ha is also known from the literature and can be obtained under known conditions [cf. EP-A 398 692].

The compounds of the formula Ib are obtained particularly advantageously via the corresponding esters of the formula IV by the following synthetic route:

The condensation of the benzyl bromide of the formula IIb with 2-hydroxypyridines of the formula IIIb takes place under conditions known per se [cf. DE-A 38 35 028].

The benzyl bromide of the formula IIb is also known from the literature and can be obtained under known conditions [cf. EP-A 420 091; DE-A 39 17 351].

2-hydroxypyridines of the formula IIIb are either commercially available or can be obtained analogously to methods known from the literature. 2-hydroxypyridines in which R ¹ , R ² or R ^{3 is} CF ₃ are preferably obtained from the commercially available 2-hydroxypyridinecarboxylic acids IIIc by reaction with hydrogen fluoride and sulfur tetrafluoride [cf. DE-A 3 620 064].

For example, compounds IIIb in which R ^{1 is} CF _{3 are obtained} from 2-hydroxypyridine-3-carboxylic acids of the formula IIIc according to the following reaction:

2-hydroxypyridinecarboxylic acids IIIc are also known from the literature [cf. EP-A 225 172; US 4,960,896; US 5,034,531] or can be prepared analogously to the literature cited.

The amidation of the esters of the formula IV is preferably carried out using methylamine under known conditions [cf. EP-A 398 692].

Due to their C = N double bonds, the compounds I can be obtained as E / Z isomer mixtures which, for example, can be separated into the largely pure individual compounds by crystallization or chromatography in the usual way.

If isomer mixtures occur during the synthesis, however, a separation is generally not absolutely necessary since the individual isomers can partially convert into one another during preparation for use or during use (e.g. under the influence of light, acid or base). Corresponding conversions can also take place after use, for example in the treatment of plants in the treated plant or in the harmful fungus or animal pest to be controlled.

With regard to the C = N-OCH ₃ double bond, the E isomers of the compounds I are preferred in terms of their activity (configuration based on the OCH ₃ group in relation to the CONHCH ₃ group).

In the definitions of the symbols given in the formulas above, collective terms were used which generally represent the following substituents:

C 1 -C ₄ alkyl: saturated, straight-chain or branched hydrocarbon radicals having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl and 1, 1-dimethylethyl;

Halomethyl: methyl groups in which the hydrogen atoms can be partially or completely replaced by halogen atoms, e.g. Chloromethyl, bromomethyl, dichloromethyl, trichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl, chlorofluoromethyl, dichlorofluoromethyl and chlorodifluoromethyl.

With regard to their intended use of the pyridine oxyamides of the formula I, the following meanings of the substituents, in each case individually or in combination, are particularly preferred: Compounds la are preferred in which R ^{1 is} methyl.

Likewise, particular preference is given to compounds la in which R ^{2 is} trifluoromethyl.

In addition, compounds la are particularly preferred in which R ^{1 represents} fluorine or chlorine.

In particular, compounds la are also preferred in which R ^{1 is} trifluoromethyl.

In addition, compounds la are particularly preferred in which R ^{1 is} C 1 -C 4 -alkyl.

In particular, compounds la are preferred in which R ^{2 represents} fluorine or bromine.

Compounds Ib in which R ^{1 is} trifluoromethyl are also particularly preferred

In addition, compounds Ib are particularly preferred in which R ^{1 represents} fluorine or chlorine.

Equally particularly preferred are compounds Ib in which R ^{2 is} trifluoromethyl.

Compounds Ib in which R ^{3 represents} hydrogen are also particularly preferred.

In addition, compounds Ib are particularly preferred in which R ^{2 is} chlorine and R ^{3 is} hydrogen.

In addition, compounds I are particularly preferred in which R ^{1 is} fluorine, chlorine, CH ₃ or CF ₃ ; R ^{2 is} fluorine, bromine, -CC alkyl or CF ₃ ; R ^{3 is} hydrogen or one of the radicals mentioned for R ² .

The 2- (2'-pyridyloxy) phenylacetic acid amides of the formula Ia are particularly preferred, in particular the compounds mentioned in Table A below:

Table A

Among the compounds Ib, the compounds mentioned in Table B below are particularly preferred:

Table B

The compounds I are suitable as fungicides. They are characterized by excellent activity against a broad spectrum of phytopathogenic fungi, in particular from the class of the Ascomycetes, Deutomycetes, Phycomycetes and Basidiomycetes. Some of them are systemically effective and can be used in plant protection as leaf and soil fungicides.

They are particularly important for combating a large number of fungi on various crops such as wheat, rye, barley, oats, rice, corn, grass, bananas, cotton, soybeans, coffee, sugar cane, wine, fruit and ornamental plants and vegetables such as cucumbers, beans, tomatoes, potatoes and squash, as well as on the seeds of these plants.

They are particularly suitable for combating the following plant diseases:

Alternaria species on vegetables and fruits,

Botrytis cinerea (gray mold) on strawberries, vegetables, ornamental plants and vines,

Cercospora arachidicola on peanuts, • Erysiphe cichoracearum and Sphaerotheca fuliginea on pumpkin plants,

Erysiphe graminis (powdery mildew) on cereals,

Fusarium and Verticillium species on different plants,

Helminthosporium species on cereals, • Mycosphaerella species on bananas and peanuts,

Phytophthora infestans on potatoes and tomatoes,

Plasmopara viticola on vines,

Podosphaera leucotricha on apples,

Pseudocercosporella herpotrichoides on wheat and barley, • Pseudoperonospora species on hops and cucumber,

Puccinia species on cereals,

Pyricularia oryzae on rice,

Rhizoctonia species on cotton, rice and lawn,

Septoria nodorum on wheat, • Uncinula necator on vines,

Ustilago species on cereals and sugar cane, as well

Venturia species (scab) on apples and pears.

The compounds I are also suitable for combating harmful fungi such as Paecilomyces variotii in material protection (e.g. wood,

Paper, dispersions for painting, fibers or fabrics) and in storage protection.

The compounds I are used by treating the fungi or the plants, seeds, materials or the soil to be protected against fungal attack with a fungicidally active amount of the active compounds. The application can take place both before and after the infection of the materials, plants or seeds by the fungi.

The fungicidal compositions generally contain between 0.1 and 95, preferably between 0.5 and 90% by weight of active ingredient.

Depending on the type of effect desired, the application rates in crop protection are between 0.01 and 2.0 kg of active ingredient per ha. In the case of seed treatment, amounts of active ingredient of 0.001 to 0.1 g, preferably 0.01 to 0.05 g, per kg of seed are generally required.

When used in material or storage protection, the amount of active ingredient applied depends on the type of application and the desired effect. Usual application rates in material protection are, for example, 0.001 g to 2 kg, preferably 0.005 g to 1 kg of active ingredient per cubic meter of treated material.

The compounds of the formula I are also suitable for effectively combating animal pests from the class of the insects, arachnids and nematodes. They can be used in crop protection as well as in the hygiene, storage protection and veterinary sectors to control animal pests. They are particularly suitable for controlling the following animal pests:

• insects from the order of the butterflies (Lepidoptera), for example Agrotis ypsilon, Agrotis segetu, Alabama argilla- cea, Anticarsia gemmatalis, Argyresthia conjugella, Autographa gamma, Bupalus piniarius, Cacoecia murinana, Capua reticulana, Cheimatobia brumata, Choristoneura fumiferana, Choristoneura occidentalis, Cirphis unipuncta, Cydia pomonella, Dendrolimus pini, Diaphania nitidalis, Diatraea grandiosella, Earias insulana, Elasmopalpus lignosellus, Eupoecilia ambiguella, Evetria bouliana, Feltia subterranea, Galleria mellonella, Grapholitha funebrana, Helithiothiothiothiella, Helithiothiothiothi, Helithium, Helithiothiothiothiothi, Helithiothiothiothi, Helithiothiothiothi, Helithiothiothiothiothi, Helithiothiothiothi, Helithiothiothi, Helithiothiothiothi, Helithiothiothiothi, Helithiothiothi undalis, Hibernia defoliaria, Hyphantria cunea, Hyponomeuta malinellus, Keiferia lycopersi- cella, ambdina fiscellaria, aphygma exigua, Leucoptera cof - feella, Leucoptera scitella, Lithocolletis blancardella, Lobe- sia botrana, Loxisia striaania liaostia liaostia liaostia liaostia liaostia Malacosoma neustria, Mamestra brassicae, Orgyia pseudotsugata, Ostrinia nubilalis, Panolis flammea, Pectinophora gossypiella, Peridroma saucia, Phalera bucephala, Phthorimaea operculella, Phyllocnistis citrella,

Pieris brassicae, Plathypena scabra, Plutella xylostella, Pseudoplusia includens, Rhyacionia frustrana, Scrobipalpula abso- luta, Sitotroga cerealella, Sparganothis pilleriana, Spodoptera frugiperda, Spodoptera littoralis, Spodoptera litura, Trumocampidia nia, Thaumocampia- nia, Thaumocampia- poira phera canadensis,

• Beetles (Coleoptera), e.g. Agrilus sinuatus, Agriotes lineatus, Agriotes obscurus, Amphimallus solstitialis, Anisandrus dispar, Anthonomus grandis, Anthonomus pomorum, Atomaria linearis, Blastophagus piniperda, Blitophaga undata, Bruchus rufimanus, Bru, Bruchus pis Byctiscus betulae, Cassida nebulosa, Cerotoma trifurcata, Ceuthorrhynchus assimilis, Ceuthorr- hynchus napi, Chaetocnema tibialis, Conoderus vespertinus, Crioceris asparagi, Diabrotica longicornis, Diabrotica 12-punc- tata, Diabrotica virgifera, Epilachna varivestis, Epitrix hir- tipennis, Eutinobothrus brasiliensisietipus, Hyperi, typus, hyperbia, hypertensia, typ , Le a melanopus, Leptinotarsa decemlineata, Limonius californi- cus, Lissorhoptrus oryzophilus, Melanotus communis, Meligethes aeneus, Melolontha hippocastani, Melolontha melolontha, Phoelphono phylophone, Phylophoneus horticola, Phyllotreta nemorum, Phyllotreta striolata, Popillia japonica, Sitona lineatus and Sitophilus granaria,

• Two-winged (Diptera), e.g. Aedes aegypti, Aedes vexans, Anastrepha ludens, Anopheles maculipennis, Ceratitis capitata, Chrysomya bezziana, Chrysomya hominivorax, Chrysomya macella- ria, Contarinia sorghicola, Cordylobia anthropophaga, Culex pi-pucurauraeeeususeeusineeeusineeeusineeeineuseeusineeeusineeeusineeeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineeusineicausicaaceacuraitaeeusineeusineicausicaaceaaceaceaura nia canicularis, Gasterophilus intestinalis, Glossina morsitans, Haematobia irritans, Haplodiplosis equestris, Hylemyia platura, Hypoderma lineata, Liriomyza sativae, Liriomyza trifolii, Lucilia caprina, Lucilia cuprina, Lucilia sericata pectoral, Lyco- rica pomica, lyco- rica, lorica- rica, lalica- rorica p , Muscina stabulans, Oestrus ovis, Oscinella frit, Pegomya hysocyami, Phorbia antiqua, Phorbia brassicae, Phorbia coarctata, Rhagoletis cerasi, Rhagoletis pomonella, Tabanus bovinus, Tipula ole-racea and Tipula paludosa,

Thrips (Thysanoptera), e.g. Frankliniella fusca, Frankliniella occidentalis, Frankliniella tritici, Scirtothrips citri, Thrips oryzae, Thrips palmi and Thrips tabaci, • Hymenoptera, e.g. Athalia rosae, Atta cephalotes, Atta sexdens, Atta texana, Hoplocampa minuta, Hoplocampa testudinea, Monomorium pharaonis, Solenopsis geminata and Solenopsis invicta,

Bugs (Heteroptera), e.g. Acrosternum hilare, blissus leucopterus, Cyrtopeltis notatus, Dysdercus cingulatus, Dysdercus intermedius, Eurygaster integriceps, Euschistus impictiventris, Leptoglossus phyllopus, Lygus lineolaris, Lygus pratensis, Nezara quadroductulais, and Pyanmairidulais, Piesma (Homoptera), e.g. Acyrthosiphon onobrychis,

Adelges laricis, Aphidula nasturtii, Aphis fabae, Aphis pomi, Aphis sambuci, Brachycaudus cardui, Brevicoryne brassicae, Ce- rosipha gossypii, Dreyfusia nordmannianae, Dreyfusiaipheae, Macyosophiosumiabia, Macysoleosumiaumia, Macysapiaumia, Macys Megoura viciae, Metopolophium dirhodum, Myzodes persicae, Myzus cerasi, Nilaparvata lugens, Pemphigus bursarius, Perkinsiella saccharicida, Phorodon humuli, Psylla mali, Psylla piri, Rhopalomyzus ascalonicus, Rhopalosiphum maidis, Sappaphis mala, Sap- paphis mali, Schizaphis graminum, Schizoneura lanuginosa, Tria- leurodes vaporariorum and Viteus vitifoliot , Leucotermes flavipes, Reticulitermes lucifugus and Termes natalensis,

Straight wing aircraft (Orthoptera), e.g. Acheta domestica, Blatta orien- talis, Blattella germanica, Forficula auricularia, Gryllotalpa gryllotalpa, Locusca migratoria, Melanoplus bivittatus, Melano- plus femur-rubrum, Melanoplus mexicanus, Melanoplus sanguini- pes, Melanoplus spretus, Schiller america, Nomadascocata nana, Schistocerca peregrina, Stauronotus maroccanus and Tachycines asynamorus,

Arachnoid such as arachnids (Acarina), e.g. Amblyomma america- nu, Amblyomma variegatum, Argas persicus, Boophilus annulatus,

Boophilus decoloratus, Boophilus microplus, Brevipalpus phoeni-eis, Bryobia praetiosa, Dermacentor silvarum, Eotetranychus carpini, Eriophyes sheldoni, Hyalomma truncatum, Ixodes ricinus, Ixodes rubieundusus, Ornithodorus moubataninausiniius, pilini gobiniotinius, th , Polyphagotarsonemus latus, Psoroptes ovis, Rhipicephalus appendiculatus, Rhipicephalus evertsi, Sarcoptes scabiei, Tetranychus cinnabarinus, Tetranychus kanzawai, Tetra - nychus paeificus, Tetranychus telarius and Tetranychusallematemate, eg Meloidogyne hapla, Meloidogyne incognita, Meloidogyne javanica, cyst-forming nematodes, e.g. Globodera rostochiensis, Heterodera avenae, Heterodera glycines, Heterodera schachtii, Heterodera trifolii, stick and leaf wholes, e.g. Belonolaimus longicaudatus, Dity- lenchus destruetor, Ditylenchus dipsaci, Heliocotylenchus mul- ticinetus, Longidorus elongatus, Radopholus similis, Rotylen- chus robustus, Trichodorus primitivus, Tylenchorhynchuschuschuschuschuschatus, dubusususus Pruschychatchuschuschuschuschuschuschuschuschuschatusus, Prylenchususus Pratusus goodeyi.

The application rate of active ingredient for controlling animal pests is 0.1 to 2.0, preferably 0.2 to 1.0 kg / ha under field conditions.

The compounds I can be converted into the customary formulations, for example solutions, emulsions, suspensions, dusts, powders, pastes and granules. The form of application depends on the respective purpose; in any case, it should ensure a fine and uniform distribution of the compound according to the invention. The formulations are prepared in a known manner, for example by stretching the active ingredient with solvents and / or carriers, if desired using emulsifiers and dispersants, and in the case of water as a diluent, other organic solvents can also be used as auxiliary solvents. The following are essentially considered as auxiliaries: solvents such as aromatics (e.g. xylene), chlorinated aromatics (e.g. chlorobenzenes), paraffins (e.g. petroleum fractions), alcohols (e.g. methanol, butanol), ketones (e.g. cyclohexanone), amine (e.g. .Ethanolamine, dimethylformamide) and water; Carriers such as natural stone powder (eg kaolins, clays, talc, chalk) and synthetic stone powder (eg highly disperse silica, silicates); Emulsifiers such as non-ionic and anionic emulsifiers (eg polyoxyethylene fatty alcohol ethers, alkyl sulfonates and aryl sulfonates) and dispersants such as lignin sulfite liquors and methyl cellulose.

Alkali, alkaline earth, ammonium salts of lignosulfonic acid, naphthalenesulfonic acid, phenolsulfonic acid, dibutylnaphthalenesulfonic acid, alkylarylsulfonates, alkyl sulfates, alkyl sulfonates, fatty alcohol sulfates and fatty acids as well as their alkali and alkaline earth metal salts, fatty alcohol sulfonates, salts of sulfonated sulfonates and salts of sulfonated alcohols, fatty alcohol sulfonates, salts of sulfonated ethoxylates, salts of sulfonated alcohols, fatty alcohol sulfonates and salts of sulfonated alcohols, fatty alcohol sulfonates, fatty alcohol sulfonates, fatty alcohol sulfonates, salted sulfonates of fatty alcohol sulfonates, fatty alcohol sulfonates, fatty alcohol sulfonates and salted sulfonated alcohols Naphthalene derivatives with formaldehyde, condensation products of naphthalene or naphthalene sulfonic acid with phenol and formaldehyde, polyoxyethylene octylphenol ether, ethoxylated isooctylphenol, octylphenol, nonylphenol, alkylphenol polyglycol ether, tributylphenylpolyglycol ether, alkyl aryl alcohol, fatty alcohol alkylene alcohol, alkyl aryl alcohol ether, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ether, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohol, alkyl aryl alcohol ethoxylated alcohols , Polyoxyethylene alkyl ether, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol ester, lignin sulfite leach and methyl cellulose into consideration.

Mineral oil fractions of medium to high boiling point, such as kerosene or diesel oil, furthermore coal tar oils as well as oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, e.g. benzene, toluene, xylene, paraffin, are used for the production of directly sprayable solutions, emulsions, pastes or oil dispersions. Tetrahydronaphthalene, alkylated naphthalenes or their derivatives, methanol, ethanol, propanol, butanol, chloroform, carbon tetrachloride, cyclohexanol, cyclohexanone, chlorobenzene, isophorone, strongly polar solvents, for example dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, water. Powders, materials for broadcasting and dusts can be prepared by mixing or grinding the active substances together with a solid carrier.

Granules, e.g. Coating, impregnation and homogeneous granules can be produced by binding the active ingredients to solid carriers. Solid carriers are e.g. Mineral soils, such as silica gel, silicas, silica gels, silicates, talc, kaolin, Attaclay, limestone, lime, chalk, bolus, loess, clay, dolomite, diatomaceous earth, calcium and magnesium sulfate, magnesium oxide, ground plastics, fertilizers such as e.g. Ammonium sulfate, ammonium phosphate, ammonium nitrate, ureas and vegetable products, such as cereal flour, tree bark, wood and nutshell flour, cellulose powder and other solid carriers.

The formulations generally contain about 0.01 to 95% by weight, preferably about 0.1 to 90% by weight, of the active ingredient. The active ingredients are used in a purity of 90% to 100%, preferably 95% to 100% (according to the NMR spectrum).

Examples of formulations are:

I. 5 parts by weight of a compound according to the invention are intimately mixed with 95 parts by weight of finely divided kaolin. In this way a dust is obtained which contains 5% by weight of the active ingredient.

II. 30 parts by weight of a compound according to the invention are intimately mixed with a mixture of 92 parts by weight of powdered silica gel and δ parts by weight of paraffin oil which has been sprayed onto the surface of this silica gel. A preparation of the active ingredient with good adhesiveness (active ingredient content 23% by weight) is obtained in this way.

III. 10 parts by weight of a compound according to the invention are dissolved in a mixture consisting of 90 parts by weight of xylene, 6 parts by weight of the adduct of 8 to 10 mol of ethylene oxide and 1 mol of oleic acid-N-monoethanolamide, 2 parts by weight of calcium salt of dodecylbenzenesulfonic acid and 2 parts by weight of the adduct of 40 moles of ethylene oxide with 1 mole of castor oil (active ingredient content 9% by weight).

IV. 20 parts by weight of a compound according to the invention are dissolved in a mixture consisting of 60 parts by weight of cyclohexanone, 30 parts by weight of isobutanol, 5 parts by weight of the adduct of 7 moles of ethylene oxide and 1 mole of isooctylphenol and 5 parts by weight of the adduct of 40 moles of ethylene oxide with 1 mole of castor oil (active ingredient content 16% by weight).

V. 80 parts by weight of a compound according to the invention are mixed with 3 parts by weight of the sodium salt of diisobutylnaphthalene-alpha-sulfonic acid, 10 parts by weight of the sodium salt of a lignosulfonic acid from a sulfite waste liquor and 7 parts by weight of powdered silica gel well mixed and ground in a hammer mill (active ingredient content 80% by weight).

VI. 90 parts by weight of a compound according to the invention are mixed with 10 parts by weight of N-methyl-α-pyrrolidone and a solution is obtained which is suitable for use in the form of very small drops (active substance content 90% by weight).

VII. 20 parts by weight of a compound according to the invention are dissolved in a mixture consisting of 40 parts by weight of cyclohexanone, 30 parts by weight of isobutanol, 20 parts by weight of the adduct of 7 moles of ethylene oxide and 1 mole of isooctylphenol and 10 parts by weight of the adduct of 40 moles of ethylene oxide with 1 mole of castor oil. Pouring the solution into 100,000 parts by weight of water and finely distributing it therein gives an aqueous dispersion which comprises 0.02% by weight of the active ingredient.

VIII.20 parts by weight of a compound according to the invention are powdered with 3 parts by weight of the sodium salt of diisobutylnaphthalene-o-sulfonic acid, 17 parts by weight of the sodium salt of lignosulfonic acid from a sulfite waste liquor and 60 parts by weight Mix the silica gel well and grind in a hammer mill. By finely distributing the mixture in 20,000 parts by weight of water, a spray liquor is obtained which contains 0.1% by weight of the active ingredient.

The active ingredients as such, in the form of their formulations or the use forms prepared therefrom, e.g. in the form of directly sprayable solutions, powders, suspensions or dispersions, emulsions, oil dispersions, pastes, dusts, spreading agents, granules by spraying, atomizing, dusting, scattering or pouring. The application forms depend entirely on the purposes; in any case, they should ensure the finest possible distribution of the active compounds according to the invention.

Aqueous use forms can be prepared from emulsion concentrates, pastes or wettable powders (wettable powders, oil dispersions) by adding water. For the production of emulsions, Pastes or oil dispersions, the substances as such or dissolved in an oil or solvent, can be homogenized in water using wetting agents, adhesives, dispersants or emulsifiers. However, it is also possible to prepare concentrates composed of an active substance, wetting agents, adhesives, dispersants or emulsifiers and possibly solvents or oil, which are suitable for dilution with water.

The active substance concentrations in the ready-to-use preparations can be varied in larger areas. Generally they are about 0.0001 to 10%, preferably about 0.01 to 1%.

The active ingredients can also be used with great success in the ultra-low-volume process (ULV), it being possible to apply formulations with more than 95% by weight of active ingredient or even the active ingredient without additives.

Oils of various types, herbicides, fungicides, other pesticides, bactericides can be added to the active ingredients, if appropriate also only immediately before use (tank mix). These agents can be added to the agents according to the invention in a weight ratio of 1:10 to 10: 1.

The agents according to the invention can also be present in the use form as fungicides together with other active ingredients, which e.g. with herbicides, insecticides, growth regulators, fungicides or even with fertilizers. Mixing the compounds I or the compositions containing them in the use form as fungicides with other fungicides results in an enlargement of the fungicidal spectrum of action in many cases.

The following list of fungicides with which the compounds according to the invention can be used together is intended to explain, but not to limit, the possible combinations: • Sulfur, dithiocarbamates and their derivatives, such as ferridimethyldithiocarbamate, zinc dimethyldithiocarbamate, zinc ethylene bisdithiocarbamate, manganese ethylene bisdithanocarbamate ethylenedia in-bis-dithiocarbamate, tetramethylthiuram disulfide, ammonia complex of zinc (N, N-ethylene-bis-di thiocarba at), ammonia complex of zinc (N, N '-propylene-bis-dithiocarbamate), zinc - (N, N ^# -propylenebis-dithiocarba at), N, N '-polypropylene-bis- (thiocarbamoyl) disulfide; Nitroderivate, such as dinitro- (1-methylheptyl) phenylcrotonate, 2-sec-butyl-4, 6-dinitrophenyl-3, 3-dimethylacrylate, 2-sec-butyl-4, 6-dinitrophenyl-isopropyl carbonate, 5- Nitro-isophthalic acid-di-isopropyl ester; Heterocyclic substances, such as 2-heptadecyl-2-imidazoline acetate, 2,4-dichloro-6- (o-chloroanilino) -s-triazine, 0,0-diethyl-phthalimidophosphonothioate, 5-amino-l- [ bis- (dimethylamino - no) -phosphinyl] -3-phenyl-l, 2,4-triazole, 2,3-dicyano-l, 4-di-thioanthraquinone, 2-thio-1,3-dithiolo [4,5 -b] quinoxaline,

Methyl 1- (butylcarbamoyl) -2-benzimidazole-carbamate, 2-methoxycarbonylamino-benzimidazole, 2- (furyl- (2)) -benzimidazole, 2- (thiazolyl- (4)) -benzimidazole, N- (1, 1 , 2, 2-tetrachloroethylthio) tetrahydrophthalimide, N-trichloromethylthio-tetrahydrophthalimide, N-trichloromethylthio-phthalimide,

N-dichlorofluoromethylthio-N ', N' -dimethyl-N-phenylsulfuric acid diamide, 5-ethoxy-3-trichloromethyl-1,2,3-thiadiazole, 2-rhodanomethylthiobenzothiazole, 1,4-dichloro- 2,5-dimethoxybenzene,

4- (2-chlorophenylhydrazono) -3-methyl-5-isoxazolone, pyridine-2-thio-l-oxide, 8-hydroxyquinoline or its copper salt, 2, 3-dihydro-5-carboxanilido-6-methyl-l, 4-oxathiin, 2, 3-dihydro-5-carboxanilido-6-methyl-l, 4-oxathiin-4, 4-dioxide, 2-methyl-5, 6-dihydro-H-pyran-3-carboxylic acid anilide, 2-methyl-furan-3-carboxylic acid anilide, 2, 5-dimethyl-furan-3-carboxylic acid anilide, 2, 4, 5-trimethyl-furan-3-carboxylic acid anilide, 2, 5-dimethyl-furan-3-carboxylic acid cyclohexylamide, N-cyclohexyl-N-meth-oxy-2, 5-dimethyl-furan-3-carboxamide, 2-methyl-benzoic acid anilide, 2-iodo-benzoic acid anilide, N-formyl-N-morpholine-2, 2, 2-trichloroethyl acetal, piperaz in-1,4-diylbis-l- (2,2,2-trichloroethyl) formamide, 1- (3,4-dichloroanilino) -1-formylamino-2,2,2-trichloroethane , 2, 6-dimethyl-N-tridecyl-morpholine or its salts, 2, 6-dimethyl-N-cyclododecyl-morpholine or its salts, N- [3- (p-tert-butylphenyl) -2-methylpropyl ] -cis-2, 6-dimethylmorpholine, N- [3- (p-tert-butylphenyl ) -2-methylpropyl] piperidine - 1- [2- (2,4-dichlorophenyl) -4-ethyl-l, 3-dioxolan-2-yl-ethyl] - lH-1,2,4-triazole , 1- [2- (2,4-dichlorophenyl) -4-n-propyl-1,3-di-oxolan-2-yl-ethyl] -1H-1,2,4-triazole, N- (n- Propyl) -N- (2, 4, 6-trichlorophenoxyethyl) -N '-imidazol-yl-urea, 1- (4-chlorophenoxy) -3, 3-dimethyl-l- (1H-1, 2 , 4-triazol-l-yl) -2-butanone, 1- (4-chlorophenoxy) -3, 3-dimethyl-l- (1H-1, 2, -triazol-l-yl) -2-butanol, ( 2RS, 3RS) -1- [3- (2-chlorophenyl) -2- (4-fluorophenyl) - oxiran-2-ylmethyl] -1H-1, 2, -triazole, α- (2-chlorophenyl) -α- (4-chlorophenyl) -5-pyrimidine-methanol, 5-butyl-2-dimethylamino-4-hydroxy-6-methyl-pyrimidine, bis- (p-chlorophenyl) -3-pyridinemethanol, 1, 2-bis- (3-ethoxycarbonyl-2-thioureido) benzene, 1,2-bis (3-methoxycarbonyl-2-thioureido) benzene,

• Strobilurins such as methyl-E-methoxyimino- [- (o-tolyloxy) -o-tolyl] acetate, methyl-E-2- {2- [6- (2-cyanophenoxy) pyrimidin-4-yl - oxy ] -phenyl} -3-methoxyacrylate, methyl-E-methoxyimino- [α- (2-phenoxyphenyl)] acetamide, methyl-E-methoxyimino- [α- (2, 5-dimethylphenoxy) -o-tolyl] -acetamide, Anilinopyrimidines such as N- (4, 6-dimechylpyrimidin-2-yl) aniline, N- [4-methyl-6- (1-propynyl) pyrimidin-2-yl] aniline, N- [4-Me- thyl-6-cyclopropyl-pyrimidin-2-yl] aniline,

Phenylpyrroles such as 4- (2,2-difluoro-1,3-benzodioxol-4-yl) pyr-rol-3-carbonitrile,

Cinnamic acid amides such as 3- (4-chlorophenyl) -3- (3, 4-dimethoxyphenyl) acrylic morpholide,

And various fungicides, such as dodecylguanidine acetate, 3- [3- (3, 5-dimethyl-2-oxycyclohexyl) -2-hydroxyethyl] glutarimide, hexachlorobenzene, DL-methyl-N- (2, 6-dimethyl-phenyl) - N-furoyl (2) alaninate, DL-N- (2,6-dimethylphenyl) -N- (2'-methoxyacetyl) alanine methyl ester, N- (2,6-dimethylphenyl) ) -N-chloroacetyl-D, L-2-aminobutyrolactone, DL-N- (2,6-dimethylphenyl) -N- (phenylacetyl) alanine methyl ester, 5-methyl-5-vinyl-3- (3rd , 5-dichlorophenyl) -2, 4-dioxo-l, 3-oxazolidine, 3- [3, 5-dichlorophenyl (-5-methyl-5-methoxymethyl] -1, 3-oxazolidine-2,4 -dione, 3- (3, 5-dichlorophenyl) -1-isopropylcarbamoylhydantoin, N- (3, 5-dichlorophenyl) -1, 2-dimethylcyclopropane-l, 2-dicarboximide, 2-cyano- [N- (ethylaminocarbonyl ) -2-methoximino] -acetamide, 1- [2- (2,4-di-chlorophenyl) pentyl] -1H-1,2,4-triazole, 2,4-difluoro-cx- (1H-1 , 2,4-triazolyl-1-methyl) -benzhydryl alcohol, N- (3-chloro-2, 6-dinitro-4-trifluoromethyl-phenyl) -5-trifluoromethyl-3-chloro-2-aminopyri- din, 1- ((bis- (4-fluorophenyl) methylsilyl) methyl) -1H-1,2,4-triazole.

Synthesis examples

The instructions given in the synthesis examples below were used with the appropriate modification of the starting compounds to obtain further compounds I. The compounds thus obtained are listed in the table below with physical information.

Example 1: Preparation of α-anti-methoxyimino-N-methyl-2- (3-fluoror-5-trifluoromethyl-2-pyridyloxy) methyl-phenylacetamide (No. 1-1)

A suspension of 1.4 g of sodium hydride in 15 ml of dimethylformamide (DMF) was mixed with a solution of 11.1 g of (E) -2- [2- (hydroxymethyl) phenyl] -2-methoxyimino-N-methylacetamide in 120 ml of DMF added. The reaction mixture was sonicated for about 10 minutes treated and then stirred for 1 hour at about 20 to 25 ° C. A solution of 9.2 g of 2,3-difluoro-5-trifluoromethylpyridine in 85 ml of DMF was added dropwise and the mixture was subsequently stirred at from 22 to 25 ° C. for about 24 hours. The reaction mixture was taken up in 1 l of dilute sodium chloride solution and extracted with methyl tert-butyl ether (MtBE). The combined organic phases were washed with water and dried. After distilling off the solvent in vacuo and chromatography on silica gel (cyclohexane / MtBE = 2: 1), 6.9 g of the title compound were obtained as a light powder with the mp. 112-116 ° C.

IR (cm ^"1 ): 3380, 1659, 1623, 1498, 1453, 1336, 1272, 1151, 1131, 1040

Example 2: Preparation of 2-chloro-3-methyl-5-iodopyridine

in a suspension of 146 g of 10% by weight hydrochloric acid and 23.4 g of 2-amino-3-methyl-5-iodopyridine [J. Org. Former, p. 5356 (1995)], 21.3 g of chlorine gas was introduced at -10 ° C. A solution of 48.3 g of sodium nitrite in 120 ml of water was then added dropwise at about -5 ° C. After stirring for about 2 hours at 0 ° C., the mixture was diluted with 1 l of water and extracted with methyl tert-butyl ether (MtBE). The organic phases were dried after washing with NaHC0 ₃ solution and water. After distilling off the solvent in vacuo and chromatography on silica gel (cyclohexane / MtBE = 1:10), 3.6 g of product were obtained in the form of dark crystals.

¹ H NMR (CDC1 ₃ , ppm): δ = 8.4 (1H); 7.9 (1H); 2.3 (3H).

Example 3: Preparation of 2-chloro-3-methyl-5-trifluoromethyl-py ^• ridine

136.3 g of sodium trifluoroacetate and 95.2 g of Cul were added to a solution of 84.7 g of the pyridine derivative from Example 2 in 1 N-methylpyrolidone and the mixture was stirred at 160 ° C. for 2 hours. After cooling, about 3 l of water were taken up and extracted with ethyl acetate. After washing with 2.5% by weight aqueous ammonia solution and water, the combined organic phases are dried and then freed from the solvent in vacuo. After rectification, the remaining crude product became a short Column 14.3 g of the title compound with the bp 70-75 ° C (at 25 bar) as a colorless oil.

1H-NMR (CDClj, ppm): 6 = 8.6 (1H); 7.8 (1H); 2.4 (3H).

Example 4: Synthesis of α-anti-methoxyimino-N-methyl-2- (3-methy1-5-trif luormethyl-2-pyridyloxy) methyl-phenylacetamide (No. 1-2)

A solution of 23.8 g of (E) -2- [2- (hydroxymethyl) phenyl] -2-methoxyimino-N-methylacetamide in 200 ml of dimethylformamide (DMF) was mixed with a suspension of 2.82 g of sodium hydride in 25 ml of DMF added. The reaction mixture was treated with ultrasound for about 10 minutes and then stirred at 20 to 25 ° C. for 1 hour. A solution of 20.9 g of 2-chloro-3-methyl-5-trifluoromethylpyridine (from Example 3) in 150 ml of DMF was added dropwise, and the mixture was stirred at 45 ° C. for 3 hours and at 22-25 ° C. for a further 24 hours C after. The reaction mixture was taken up in 3 1 dilute sodium chloride solution and with methyl tert. - Butyl ether (MtBE) extracted. After washing with water and drying, the combined organic phases were freed from the solvent in vacuo. From the residue was obtained after chromatography on silica gel Chromatogra ^¬ (cyclohexane / MtBE = 1: 1) 15.8 g of the title compound as a white powder with mp. from 133-135 ° C.

IR (cm ^"1 ): 1672, 1418, 1335, 1324, 1269, 1264, 1173, 1145, 1123, 1038.

Examples of the action against harmful fungi

The fungicidal activity of the compounds of the general formula I was demonstrated by the following tests:

The active ingredients were separated or together as a 10% emulsion in a mixture of 70% by weight cyclohexanone, 20% by weight Nekanil® LN (Lutensol® AP6, wetting agent with emulsifying and dispersing action based on ethoxylated alkylphenols) and 10% by weight .-% Wettol® EM (non-ionic emulsifier based on ethoxylated castor oil) prepared and diluted with water according to the desired concentration.

The substances known from EP-A 398 692 (Table 7, No. 78; Compound A) and from EP-A 760 363 (No. 9; Compound B) served as comparative active ingredients:

Example of use 1 - effectiveness against Plasrnopara vi ticola

Leaves of pot vines of the "Müller-Thurgau" variety were sprayed to runoff point with aqueous preparation of active compound, which was prepared with a stock solution of 10% active compound, 63% cyclohexanone and 27% emulsifier. In order to be able to assess the long-term effect of the substances, the plants were placed in the greenhouse for 7 days after the spray coating had dried on. Only then were the leaves inoculated with an aqueous suspension of zoospores from Plasrnopara vi ticola. The vines were then placed for 48 hours in a steam-saturated chamber at 24 ° C and then for 5 days in a greenhouse at temperatures between 20 and 30 ° C. After this time the plants were again placed in a humid chamber for 16 hours to accelerate the sporangium carrier outbreak. The extent of the development of the infestation on the undersides of the leaves was then determined visually.

In this test, the plants treated with 4 ppm of the compounds 1-1, 1-2, 1-3, 1-5, 1-6, 1-7 and 1-8 did not show more than 15% infection, while those with 4 ppm of the comparative compounds A and B, 60% and 50% of the treated plants, respectively, and 75% of the untreated plants were infected.

Example of use 2 - long-term activity against Phytophthora in-fes tans on tomatoes

Potted tomato plants of the "large meat tomato" variety were sprayed in a 4-leaf stage with an aqueous suspension which had been prepared from a stock solution of 10% active ingredient, 63% cyclohexanone and 27% emulsifier, until it dripped. In order to ensure the long-term effectiveness of the compounds, the leaves were infected with an aqueous suspension of zoospores of Phytoph thora infes tans one week after application. The plants were then placed in a steam-saturated chamber at temperatures between 16 and 18 ° C. After 6 days, the blight on the untreated but infected control plants had developed so strongly that the infestation could be determined visually in%.

In this test, the plants treated with 16 ppm of the compounds 1-1, 1-2, 1-5, 1-6, 1-7 and 1-8 showed at most 15% infection, while those with 16 ppm of the comparison compounds A and B treated plants were 25 or 100% and the untreated plants were also 100% infected.

Use Example 3 - Activity against Puccinia recondi ta on Wheat (Wheat Brown Rust)

Leaves of potted wheat seedlings of the "early gold" variety were dusted with spores of the brown rust (Puccinia recondi ta). The pots were then placed in a chamber with high air humidity (90 to 95%) and 20 to 22 ° C for 24 hours. During this time, the spores germinated and the germ tubes penetrated the leaf tissue. The next day, the infected plants were sprayed to runoff point with an aqueous preparation of active compound which had been prepared from a stock solution consisting of 10% active compound, 63% cyclohexanone and 27% emulsifier. After the spray coating had dried on, the test plants were cultivated in the greenhouse at temperatures between 20 and 22 ° C. and 65 to 70% relative atmospheric humidity for 7 days. fourth. The extent of the rust fungus development on the leaves was then determined.

In this test, the plants treated with 16 ppm of compounds 1-1, 1-2, 1-3, 1-6 and 1-8 showed at most 15% and those with 63 ppm of compounds 1-1, 1-2, 1 The plants treated with -3, 1-6 and 1-8 were not infected, while the plants treated with 16 and 63 ppm of comparative compound A were 75% and 40% infected and the untreated plants 75%.

Example of use 4 - Activity against Pyri culari a oryzae (protective)

Leaves of "Tai-Nong 67" rice seedlings grown in pots were sprayed to runoff point with aqueous active compound preparation which was prepared with a stock solution of 10% active compound, 63% cyclohexanone and 27% emulsifier. The following day, the plants were inoculated with an aqueous spore suspension of Pyricularia oryzae. The test plants were then placed in climatic chambers at 22-24 ° C and 95-99% relative humidity for 6 days. The extent of the development of the infestation on the leaves was then determined visually.

In this test, the plants treated with 63 ppm of compounds 1-1, 1-2, 1-3, 1-5 and 1-8 showed at most 15% and those with 16 ppm of compounds 1-1, 1-2, 1 The plants treated with -3, 1-5 and 1-8 did not have an infestation of more than 40%, while the plants treated with 63 and 16 ppm of the comparative compound A were 60 and 90% infected, respectively, and the untreated plants also 90%.

Examples of the action against animal pests

The activity of the compounds of the general formula I against animal pests was demonstrated by the following tests:

The active ingredients were a. as a 0.1% solution in acetone or b. as a 10% emulsion in a mixture of 70% by weight cyclohexanone, 20% by weight Nekanil® LN (Lutensol® AP6, wetting agent with emulsifying and dispersing action based on ethoxylated alkylphenols) and 10% by weight Wettol® EM (nonionic emulsifier based on ethoxylated castor oil) processed and with the desired concentration with acetone in the case of a. or with water in the case of b. diluted.

After the end of the tests, the lowest concentration was determined at which the compounds still had an 80 to 100% inhibition in comparison with untreated control tests or cause mortality (threshold of action or minimum concentration).

Example 1 Effect against Nephotettix cincticeps (green rice cicada), contact effect

Round filters (0 9 cm) were treated with 1 ml of the aqueous active ingredient preparation and then coated with five adult leafhoppers. Mortality was determined after 24 hours.

In this test, active ingredients 1-2 showed an active threshold of 0.2 mg, while the comparison active ingredients A and B had active thresholds of more than 0.2 mg.

Claims

claims

Substituted 2- (2'-pyridyloxy) phenylacetic acid amides of the formula I,

NHCH,

in which the substituents have the following meaning

R ^{1 is} fluorine, chlorine, CH ₃ or halomethyl;

R ² fluorine, bromine, -CC ~ alkyl or halomethyl;

R ^{3 is} hydrogen or one of the radicals mentioned for R ² ,

or

R ² 6-chlorine when R ^{3 is} hydrogen,

R ³ 5-chlorine when R ^{2 is} fluorine, and the compound in which R ¹ , R ² and R ^{3 are} all chlorine;

with the proviso that R ¹ cannot represent chlorine if R ^{2 is} 5-trifluoromethyl and R ^{3 is} hydrogen.

2. phenylacetic acid amides of the formula Ia,

in which R ¹ and R ^{2 have} the meaning given in claim 1.

3. phenylacetic acid amides of formula la according to claim 2, wherein R ^{1 is} methyl or trif luormethyl.

Phenylacetic acid amides of formula la according to claim 2, wherein one of the radicals R ¹ or R ^{2 is} methyl and the other trifluoromethyl.

Phenylacetic acid amides of the formula Ib,

in which R ¹ , R ² and R ^{3 have} the meanings given in claim 1.

Phenylacetic acid amides of the formula Ib according to Claim 5, in which R ¹ is trifluoromethyl and R ^{3 is} hydrogen.

A process for the preparation of compounds of formula la according to claim 2, characterized in that a benzyl alcohol of formula Ha

under basic conditions with a 2-halopyridine of the formula purple,

where shark stands for halogen.

A process for the preparation of compounds of the formula Ib according to claim 5, characterized in that a benzyl bromide of the formula Ilb

under basic conditions with a 2-hydroxypyridine of the formula Illb to a 2- (2'-pyridyloxy) phenylacetic acid ester of the formula IV

and IV with methylamine to Ib.

Agent suitable for controlling animal pests or harmful fungi, comprising a solid or liquid carrier and an effective amount of at least one compound of the formula I according to claim 1.

10. Use of the compounds I according to claim 1 for the preparation of an agent suitable for controlling animal pests or harmful fungi.

11. A method for combating harmful fungi, characterized in that the fungi or the materials, plants, soil or seeds to be protected against fungal attack are treated with an effective amount of at least one compound of the formula I according to claim 1.

12. A method for controlling animal pests, characterized in that the animal pests or the materials, plants, soil or seeds to be protected from them are treated with an effective amount of a compound of the formula I according to claim 1.