Fungicidal guanidines

Abstract

Guanidines I ##STR1## (A=C.sub.5 -C.sub.12 -cycloalkyl which may bear up to three further substituents; benzyl substituted in the para-position; R.sup.1, R.sup.2, R.sup.3 =H, C.sub.1 -C.sub.4 -alkyl; R.sup.4 =C.sub.5 -C.sub.18 -alkyl which may be interrupted by oxygen, C.sub.5 -C.sub.18 -alkenyl, C.sub.4 -C.sub.18 -alkynyl or phenyl-C.sub.1 -C.sub.6 -alkyl, and these groups may bear up to three further substituents and the phenyl moiety of the phenylalkyl may additionally bear a phenoxy group or up to three C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.6 -alkyl or haloalkyl groups, C.sub.5 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl, where the ring may bear up to three further substituents; A=benzyl and R.sup.4 =C.sub.3 -C.sub.4 -alkyl which may be interrupted by oxygen, or C.sub.4 -alkenyl, both of which may bear up to three further substituents; R.sup.3 +R.sup.4 =C.sub.5 -C.sub.6 -heterocycle which may bear up to three further substituents and may be interrupted by oxygen)and the salts I.HX and the metal complexes of I.The compounds I are suitable as fungicides.

Description

The present invention relates to novel guanidines of the formula I ##STR2## where A is cycloalkyl which has 5 to 12 carbon atoms in the ring and may carry up to three of the following substituents: hydroxyl, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy, C.sub.1 -C.sub.10 -haloalkyl and C.sub.1 -C.sub.8 -alkoxy-C.sub.1 -C.sub.8 -alkyl; or benzyl which is substituted in the para position by C.sub.1 -C.sub.10 -alkyl or C.sub.1 -C.sub.10 -alkoxy, where the substituent may furthermore carry a hydroxyl or a C.sub.1 -C.sub.6 -alkoxy group;

R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, and R.sup.4 is C.sub.5 -C.sub.18 -alkyl which may be interrupted by oxygen, or is a C.sub.5 -C.sub.18 -alkenyl group, a C.sub.4 -C.sub.18 -alkynyl group or a phenyl-C.sub.1 -C.sub.6 -alkyl group, where these groups may carry up to three of the following substituents: hydroxyl, halogen, cyano, C.sub.1 -C.sub.7 -alkoxy or up to two amino, C.sub.1 -C.sub.4 -alkylamino or di-(C.sub.1 -C.sub.4)-alkylamino substituents and the phenyl moiety of the phenylalkyl group may additionally carry a phenoxy group or up to three C.sub.2 -C.sub.4 -alkenyl groups, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl groups or C.sub.1 -C.sub.6 -alkyl groups which may be unsubstituted or partially or completely halogenated, or C.sub.5 - or C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl groups or up to two hydroxyl or trifluoromethyl groups; or, where A is a benzyl group according to the definition, C.sub.3 - or C.sub.4 -alkyl which may be interrupted by oxygen or may carry a C.sub.4 -alkenyl group, where these groups may carry up to three of the following substituents: hydroxyl, halogen, cyano, C.sub.1 -C.sub.7 -alkoxy or up to two amino, C.sub.1 -C.sub.4 -alkylamino or C.sub.2 -C.sub.8 -dialkylamino groups; or, together with the radical R.sup.3 and the nitrogen atom, may form a 5-membered or 6-membered heretocyclic ring which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.6 -alkyl, phenyl or C.sub.1 -C.sub.6 -alkylphenyl or may be interrupted by an oxygen atom, and the plant-tolerated mineral acid salts I.HX and metal complexes of I.

The present invention furthermore relates to processes for the preparation of these compounds, their use as fungicides, and fungicides which contain these compounds as active substances.

The monograph Chemie der Pflanzenschutz- und Schadlingsbekampfungsmittel, Volume 4, Springer Verlag 1977, page 145 et seq., discloses fungicidal alkylguanidine salts (dodines) and bisalkylguanidineamine salts (guazatines) which carry an alkyl group on one of the guanidine nitrogen atoms or whose guanidino groups are linked to one another by an azaalkylene group.

Guanidine derivatives which have a fungicidal action and are aryl-substituted at one nitrogen atom and substituted by alkyl and cycloalkyl groups at the two other nitrogen atoms are described in DE-A1-31 08 564.

However, the actions of these compounds may be satisfactory only under certain circumstances, particularly in the case of low application rates and concentrations. In particular, some of them cause damage to crops.

It is an object of the present invention to provide novel fungicidal compounds which, even at relatively low application rates, have better fungicidal properties than the compounds known to date, without causing significant damage to the crops.

We have found that this object is achieved by the guanidines of the formula I which were defined at the outset. We have also found processes for the preparation of these guanidines.

If R.sup.1 and/or R.sup.3 are hydrogen, the compounds I may furthermore be present in tautomeric forms, which are described by formula I.

The substituents in the novel compounds I have the following specific meanings:

A is cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl or cyclododecyl, where these groups may carry up to three of the following radicals: hydroxyl; halogen, including in particular fluorine; straight-chain or branched C.sub.1 -C.sub.10 -alkyl, in particular C.sub.1 -C.sub.6 -alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, 1,1-dimethylpropyl or 2,4,4-trimethylpent-2-yl; straight-chain or branched C.sub.1 -C.sub.10 -alkoxy, in particular C.sub.1 -C.sub.6 -alkoxy, such as methoxy, ethoxy, isopropoxy, n-butoxy, tert-butoxy or octyloxy; straight-chain or branched, partially or completely halogenated C.sub.1 -C.sub.10 -haloalkyl, in particular C.sub.1 -C.sub.6 -haloalkyl, such as trifluoromethyl or pentafluoroethyl; C.sub.1 -C.sub.8 -alkoxy-C.sub.1 -C.sub.8 -alkyl, in particular C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl, such as methoxymethyl, ethoxymethyl, methoxyethyl, tert-butoxymethyl or 1-methoxy-1-methylethyl; or benzyl which may carry one of the following substituents in the para position: straight-chain or branched C.sub.1 -C.sub.10 -alkyl, in particular C.sub.1 -C.sub.6 -alkyl, such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, 1,1-dimethylethyl, 1,1-dimethylpropyl, 2,3-dimethylpropyl, 1,1,2-trimethylpropyl, 2-hydroxyprop-2-yl or 2-methoxyprop-2-yl; C.sub.1 -C.sub.10 -alkoxy, in particular C.sub.1 -C.sub.6 -alkoxy, such as methoxy, ethoxy, isopropoxy, n-butoxy, tert-butoxy or hexyloxy; particularly preferred radicals A are cyclopentyl, cyclohexyl, cycloheptyl, 1-methoxy-1-methylethylcyclohexyl, 2-methylcyclohexyl, 3-methylcyclohexyl, 3-trifluoromethylcyclohexyl, 3,3-dimethylcyclohexyl, 3,3,5-trimethylcyclohexyl, 4-hydroxycyclohexyl, 4-chlorocyclohexyl, 4-chloroethylcyclohexyl, 4-isopropylcyclohexyl, 4-(1-methoxyisopropyl-cyclohexyl, 4-tert-butylcyclohexyl, 4-(1,1-dimethylpropyl)-cyclohexyl, 4-ethoxycyclohexyl, 4-tert-butoxycyclohexyl, 4-(2,4,4-trimethylhex-2-yl)-cyclohexyl, benzyl, p-methylbenzyl, p-ethylbenzyl, p-isopropylbenzyl, p-tert-butylbenzyl, p-(2,3-dimethylpropyl)-benzyl, p-(1,1-dimethylethyl)-benzyl, p-(1,1,2-trimethylpropyl)benzyl, p-(2-hydroxyprop-2-yl)-benzyl, p-(2-methoxyprop-2-yl)-benzyl, p-methoxybenzyl or p-tert-butoxybenzyl; R.sup.1, R.sup.2 and R.sup.3 are each preferably hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl or isobutyl; R.sup.4 is straight-chain or branched C.sub.5 -C.sub.18 -alkyl which may be interrupted by oxygen, preferably 2,2-dimethylpropyl, 3-methylbutyl, 3,3-dimethylbutyl, n-pentyl, 4,4-dimethylpentyl, n-hexyl, 2-ethylhexyl, 3,5,5-trimethylhexyl, n-heptyl, n-octyl, 5-methyloct-2-yl, 2-hydroxyoctyl, 8-hydroxyoctyl, 8-fluorooctyl, 8-chlorooctyl, 2,5,7,7-tetramethyloctyl, n-nonyl, n-decyl, n-dodecyl, n-tri-decyl, isotridecyl, 6,10-dimethylundec-2-yl, 6,10,14-trimethylpentadec-2-yl, n-hexadecyl, n-octadecyl, 4-(4-tert-butoxy)-but-2-yl, tert-butoxypentyl, 6-ethyl-4-oxadecyl or 3-diethylaminopropyl; straight-chain or branched C.sub.5 -C.sub.18 -alkenyl or C.sub.4 -C.sub.18 -alkynyl, in particular dimethylallyl or but-2-ynyl; phenyl-C.sub.1 -C.sub.6 -alkyl, in particular phenyl-C.sub.1 -C.sub.4 -alkyl, which may carry a phenoxy group or up to three of the following radicals: hydroxyl; halogen, including in particular fluorine or chlorine; cyano; straight-chain or branched C.sub.1 -C.sub.7 -alkoxy, in particular C.sub.1 -C.sub.4 -alkoxy, such as methoxy, ethoxy, isopropoxy, n-butoxy or tert-butoxy, or up to 2 amino, C.sub.1 -C.sub.4 -alkylamino and/or di-C.sub.1 -C.sub.4 -alkylamino substituents, in particular amino, dimethylamino and diethylamino; phenoxy on the phenyl moiety of the phenylalkyl group; up to three of the following substituents on the phenyl moiety of the phenylalkyl group: straight-chain or branched C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl, in particular C.sub.1 -C.sub.4 -alkoxy-C.sub.1 - or -C.sub.2 -alkyl, such as methoxymethyl, ethoxymethyl or ethoxyethyl; straight-chain or branched C.sub.2 -C.sub.4 -alkenyl, in particular ethenyl or isopropenyl; C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl, such as methoxymethyl, or straight-chain or branched C.sub.1 -C.sub.6 -alkyl or partially or completely halogenated C.sub.1 -C.sub.6 -haloalkyl, in particular methyl, trichloromethyl, trifluoromethyl, ethyl, propyl, isopropyl, n-butyl, tert-butyl, 1,1-dimethylpropyl, 1,1,2-trimethylpropyl, 2,4,4-trimethylpentyl or perfluoropentyl; particularly preferred radicals are benzyl, 4-hydroxybenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2,4-dichlorobenzyl, 4-cyanobenzyl, 4-methylbenzyl, 4-trifluoromethylbenzyl, 4-trichloromethylbenzyl, 4-isopropylbenzyl, 4-isopropenylbenzyl, 3-tert-butylbenzyl, 4-tert-butylbenzyl, 4-(1,1-dimethylpropyl)-benzyl, 4-(1,1,2-trimethylpropyl)-benzyl, 4-(2,4,4-trimethylpentyl)-benzyl, 4-(1-hydroxy-1-methylethyl)-benzyl, 3,5-di-tert-butyl-4-hydroxybenzyl, 4-methoxybenzyl, 4-(1-methoxy-1-methylethyl)-benzyl, 4-n-butoxybenzyl or 4-tert-butoxybenzyl, 1-phenylethyl, phenethyl, 4-methoxyphenethyl, 4-tert-butylphenethyl, 3-phenylpropyl, 3-(4-tert-butylphenyl)2-methylpropyl or 4-phenylbut-2-yl; a C.sub.5 - or C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl group where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl groups, such as methyl or tert-butyl, or up to two hydroxyl or trifluoromethyl groups, in particular a C.sub.5 - or C.sub.6 -cycloalkyl-C.sub.1 -C.sub.4 -alkyl group, such as cyclohexylmethyl, 4-tert-butyl-cyclohexylmethyl, 4-trifluoromethylcyclohexylmethyl, 4-hydroxycyclohexylmethyl, 4-tert-butoxycyclohexylmethyl, cyclohexylethyl, cyclohexylpropyl or 3-(4-tert-butylcyclohexyl)-2-methylpropyl; or, where A is a benzyl group according to the definition, straight-chain or branched C.sub.3 - or C.sub.4 -alkyl which may be interrupted by oxygen, in particular isopropyl, tert-butyl or 2-hydroxypropyl; or C.sub.4 -alkylene, in particular but-2-enyl; or, together with R.sup.3 and the nitrogen atom, is a 5-membered or 6-membered heterocyclic structure which may be monosubstituted to trisubstituted by C.sub.1 -C.sub.6 -alkyl, phenyl or C.sub.1 -C.sub.6 -alkylphenyl and may be interrupted by an oxygen atom; in particular 2-(1,5-dimethylhexyl)-pyrrolidinyl, 2-(2,4,4-trimethylpentyl)-pyrrolidinyl, 3-phenylpyrrolidinyl, 3-(4-tert-butylphenyl)-pyrrolidinyl, 3-(4-tert-butylphenyl)-4-methylpyrrolidinyl, piperidinyl, 4-tert-butylpiperidinyl, 4-(4-tert-butylphenyl)-piperidinyl, morpholinyl or 2,6-dimethylmorpholin-4-yl.

Particularly suitable compounds I are shown in the Table, those which carry the following substituents being particularly preferred:

A is cyclohexyl, 3,3-dimethylcyclohexyl, 4-tert-butylcyclohexyl or p-tert-butylbenzyl; R.sup.1 is hydrogen; R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl; R.sup.3 is hydrogen or methyl; and R.sup.4 is C.sub.6 -C.sub.14 -alkyl, in particular 2-ethylhexyl or 6,10-dimethylundec-2-yl, or p-(C.sub.1 -C.sub.6 -alkyl)-phenyl-C.sub.1 -C.sub.4 -alkyl, in particular p-tert-butylbenzyl, 3-(p-tert-butylphenyl)-2-methylpropyl or p-(2,3-dimethylbut-2-yl)-benzyl, or together with R.sup.3 and the nitrogen atom, forms 4-tertbutylphenylpyrrolidinyl.

Suitable acid addition salts are the plant-tolerated salts of acids which do not adversely affect the fungicidal action of I, for example the iodides, chlorides, bromides, hydrochlorides, hydrobromides, sulfates, dodecylsulfates, nitrates, carbonates, phosphates, formates, acetates, propionates, benzoates, oxalates, naphthalenesulfonates, dodecylbenzenesulfonates, lactates and the salts with the anion of saccharin. The iodides, chlorides and acetates are preferred.

Suitable metal complexes are the complexes of copper, of zinc, of tin, of manganese, of iron, of cobalt or of nickel. The complexes are preferably prepared from the free bases I and salts of mineral acids, for example the chlorides or sulfates, with the metals.

The following compounds I are very particularly suitable:

N-1-cyclohexyl-N-2-(6,10-dimethylundec-2-yl)-guanidine hydriodide, N-1-cyclohexyl-N-2-[3-(p-tert-butylphenyl)-2-methylpropyl]-quanidine hydriodide, N-1-(2,2-dimethylcyclohexyl)-N-2-[3-(p-tert-butylphenyl)-2-methylpropyl]-guanidine hydriodide, N-1-cyclohexyl-N-2-(p-tert-butylbenzyl)-guanidine hydrochloride, N-1-(3,3-dimethylcyclohexyl)-N-2-(p-tert-butylbenzyl)-guanidine hydrochloride, N-1-cyclohexyl-N-2-[p-(2,3-dimethylbut-2-yl)-benzyl]-guanidine hydriodide, N-1-(p-tert-butylcyclohexyl)-N-2-(p-tert-butylbenzyl)-N-3-methylguanidine hydriodide, N-1-cyclohexyl-N-2-n-butyl-N-3-(p-tert-butylbenzyl)-guanidine hydroacetate, N-1-cyclohexyl-N-2-(p-tert-butylbenzyl)-N-2-methylguanidine hydroacetate, N-1-(p-tert-butylbenzyl)-N-2-(2-ethylhexyl)-guanidine hydriodide, N-1-(p-tert-butylbenzyl)-N-2-(p-tert-butylbenzyl)-N-3-methylguanidine hydriodide and 1-{[(3,3-dimethylcyclohexyl)-amino]-iminomethyl}-[3-(p-tert-butylphenyl)]-pyrrolidine.

The guanidines I are obtainable in various ways, preferably by the following methods:

a) Preparation from thiuronium salts and amines ##STR3##

In these formulae, R.sup.5 is benzyl or a short-chain alkyl radical, e.g. methyl or ethyl, and X' is advantageously chloride, bromide, iodide, sulfate, methylsulfate, methylsulfonate or tosylate.

The starting compounds IIa-IIc and IIIa-IIIc are known or are obtainable in a known manner; regarding the thiuronium salts, reference may be made to Houben-Weyl, Methoden der Organischen Chemie, 4th edition, Vol. IX, page 900 et seq.

The reaction, known per se from Houben-Weyl, Methoden der Organischen Chemie, 4th edition, Vol. VIII, page 1893 et seq. and Vol. E4, page 614 et seq., of thiuronium salts with amines to give the quanidine derivatives I.multidot.HX' is preferably carried out in polar solvents such as alcohols, ketones, ethers, nitriles, dimethyl sulfoxide, N-methylpyrrolidone, dimethylformamide or dimethylacetamide.

The ratios of the reactants may be varied depending on the compounds used. Advantageously, equimolar amounts are reacted or, particularly preferably, twice the required amount of the amine component is used. Furthermore, a tertiary amine, such as triethylamine, may also be added as an auxiliary base to trap the mercaptan being formed. In this case, equimolar amounts, based on the thiuronium salt, of the auxiliary base are preferably used.

It is advisable to carry out the reactions at from 20.degree. C. to the boiling point of the solvent, preferably from 60.degree. to 130.degree. C. Since the reactions are not pressure-dependent, they are preferably carried out under atmospheric pressure.

By anion exchange, it is possible to obtain salts with other anions X.sup..crclbar. or, in the case of exchange with hydroxyl ions, the free bases I.

b) Preparation from aminoiminomethanesulfonic acids and amines ##STR4##

The starting compounds IVa-IVd are known or are obtainable in a known manner from thiourea derivatives (e.g. C. A. Maryanoff et al., J. Org. Chem. 51 (1986), 1882 et seq.).

The reaction, known per se from C. A. Maryanoff et al., loc. cit., of aminoiminosulfonic acids with amines to give the guanidine derivatives I is preferably carried out in a polar solvent, such as an alcohol or, particularly preferably, in acetonitrile.

It is advisable to carry out the reactions at from 0.degree. C. to the boiling point of the solvent.

Regarding the ratios and the pressure, the data for Method a) are applicable.

c) Preparation from carbodiimides and amines ##STR5##

The starting compounds Va-Vc are known or are obtainable by known processes. By way of example, reference may be made to M. Mikolaiczyk, Tetrahedron 37 (1981), 233 et seq., Z. M. Jaaszay et al., Synthesis, 1987, 520 et seq., and G. Appel et al., Chem. Ber. 104 (1971), 1335 et seq.

The reaction, known per se from Houben-Weyl, Methoden der Organischen Chemie, 4th edition, Vol. VIII, page 180 and Vol. E4, page 609, of carbodiimides with amines to give the guanidine derivatives I is preferably carried out in a nonpolar solvent, such as hexane, toluene, a short-chain alcohol, such as methanol or isopropanol, or a nitrile, such as acetonitrile.

For the reactions, it is advisable to use equimolar amounts of the starting compounds or, preferably, a small excess of the amine component, i.e. not more than about 10%.

Regarding the temperature and the pressure, the data for Method a) are applicable.

d) Preparation from diphenylimidocarbonates and amines ##STR6## In formula IVa, R.sup.6 is cyano, benzoyl or methanesulfonyl.

The reaction, known per se from A. Buschauer, Arzneim.-Forsch./Drug Res. 37 (II) (1987), 1003/1008 et seq., and Arch. Pharm. 321 (1988), 281, of diphenylimidodicarbonates with two amines is carried out in two separate stages. The reaction of the imidocarbonate with the first amine is preferably effected in a chlorohydrocarbon, such as methylene chloride, in ether, such as tetrahydrofuran or diethyl ether, or a nitrile, such as acetonitrile. The further reaction of the product with the second amine is carried out in a polar solvent, such as acetonitrile or pyridine.

Regarding the ratios, the temperature and the pressure, the data for Method c) are applicable.

The hydrolysis of the resulting bases I where R.sup.2 =R.sup.6 is carried out in a known manner, advantageously in a mineral acid at, for example, from 70.degree. to 120.degree. C. Preferably, 2-12.5M hydrochloric acid is used under reflux.

The chloride salts of the novel compounds I in which R.sup.2 is hydrogen are obtained.

e) Preparation from cyanogen bromide and amines ##STR7## In these formulae, X" is preferably chloride.

The reaction, known per se from H. W. Geluk et al., J. Med. Chem. 12 (1969), 712 et seq., of cyanogen bromide with amines to give N-substituted cyanamide derivatives VIIa or VIIb is preferably carried out in an ether, such as diethyl ether or tetrahydrofuran.

An excess of the amine component over the cyanogen bromide, i.e. not more than about 60%, is advantageously used.

It is advisable to carry out the reaction at from 0.degree. to 25.degree. C. Since the reactions are not pressuredependent, they are preferably effected under atmospheric pressure.

The reaction of the N-substituted cyanamides VIIa and VIIb with the hydrochlorides of the amines IIIb and IIIa is preferably carried out in the absence of a solvent, at, for example, from 150.degree. to 250.degree. C.

Regarding the amounts used, the pressure or the preparation of the free bases I, the data for Method c) are applicable.

The compounds of the formula I and their salts and metal complexes according to the definition are suitable as fungicides and are well tolerated by plants.

Generally speaking, the guanidines according to the invention are extremely effective on a broad spectrum of phytopathogenic fungi, in particular those from the Ascomycetes and Basidiomycetes classes. Some of them have a systemic action and can be used as foliar and soil fungicides.

The fungicidal compounds are of particular interest for controlling a large number of fungi in various crops or their seeds, especially wheat, rye, barley, oats, rice, Indian corn, lawns, cotton, soybeans, coffee, sugar cane, fruit and ornamentals in horticulture and viticulture, and in vegetables such as cucumbers, beans and cucurbits.

The novel compounds are particularly useful for controlling the following plant diseases:

Erysiphe graminis in cereals, Erysiphe cichoracearum and Sphaerotheca fuliginea in cucurbits, Podosphaera leucotricha in apples, Uncinula necator in vines, Puccinia species in cereals, Rhizoctonia species in cotton and lawns, Ustilago species in cereals and sugar cane, Venturia inaequalis (scab) in apples, Helminthosporium species in cereals, Septoria nodorum in wheat, Botrytis cinerea (gray mold) in strawberries and grapes, Cercospora arachidicola in groundnuts, Pseudocercosporella herpotrichoides in wheat and barley, Pyricularia oryzae in rice, Phytophthora infestans in potatoes and tomatoes, Fusarium and Verticillium species in various plants, Plasmopara viticola in grapes, Alternaria species in vegetables and fruit.

The guanidines I are particularly suitable for combating Botrytis cinerea.

The compounds are applied by treating the plants, or the seed, materials or soil to be protected against fungus attack with a fungicidally effective amount of the active ingredients.

The novel substances can be converted into conventional formulations such as solutions, emulsions, suspensions, dusts, powders, pastes and granules. The application forms depend entirely on the purposes for which they are intended; they should at all events ensure a fine and uniform distribution of the active ingredient. The formulations are produced in known manner, for example by extending the active ingredient with solvents and/or carriers, with or without the use of emulsifiers and dispersants; if water is used as solvent, it is also possible to employ other organic solvents as auxiliary solvents. Suitable auxiliaries for this purpose are solvents such as aromatics (e.g., xylene), chlorinated aromatics (e.g., chlorobenzenes), paraffins (e.g., crude oil fractions), alcohols (e.g., methanol, butanol), ketones (e.g., cyclohexanone), amines (e.g., ethanolamine, dimethylformamide), and water; carriers such as ground natural minerals (e.g., kaolins, aluminas, talc and chalk) and ground synthetic minerals (e.g., highly disperse silica and silicates); emulsifiers such as nonionic and anionic emulsifiers (e.g., polyoxyethylene fatty alcohol ethers, alkyl sulfonates and aryl sulfonates); and dispersants such as lignin-sulfite waste liquors and methylcellulose.

The fungicidal agents generally contain from 0.1 to 95, and preferably from 0.5 to 90, wt % of active ingredient. The application rates are from 0.01 to 6, and especially from 0.02 to 3, kg of active ingredient per hectare, depending on the type of effect desired. The novel compounds may also be used for protecting materials (wood), for example against Paecilomyces variotii.

When the active ingredients are used for treating seed, amounts of from 0.001 to 50, and preferably from 0.01 to 10, g per kg of seed are usually employed.

The agents and the ready-to-use formulations prepared from them, such as solutions, emulsions, suspensions, powders, dusts, pastes and granules, are applied in conventional manner, for example by spraying, atomizing, dusting, scattering, dressing or watering.

Examples of formulations are given below.

I. A solution of 90 parts by weight of compound no. 3a and 10 parts by weight of N-methyl-.alpha.-pyrrolidone, which is suitable for application in the form of very fine drops.

II. A mixture of 20 parts by weight of compound no. 2a, 80 parts by weight of xylene, 10 parts by weight of the adduct of 8 to 10 moles of ethylene oxide and 1 mole of oleic acid-N-monoethanolamide, 5 parts by weight of the calcium salt of dodecylbenesulfonic acid, and 5 parts by weight of the adduct of 40 moles of ethylene oxide and 1 mole of castor oil; by finely distributing the solution in water a dispersion is obtained.

III. An aqueous dispersion of 20 parts by weight of compound no. 5a, 40 parts by weight of cyclohexanone, 30 parts by weight of isobutanol, 20 parts by weight of the adduct of 40 moles of ethylene oxide and 1 mole of castor oil.

IV. An aqueous dispersion of 20 parts by weight of compound no. 26a, 25 parts by weight of cyclohexanol, 65 parts by weight of a mineral oil fraction having a boiling point between 210.degree. and 280.degree. C., and 10 parts by weight of the adduct of 40 moles of ethylene oxide and 1 mole of castor oil.

V. A mixture, triturated in a hammer mill, of 80 parts by weight of compound no. 37a, 3 parts by weight of the sodium salt of diisobutylnaphthalene-.alpha.-sulfonic acid, 10 parts by weight of the sodium salt of a lignin-sulfonic acid obtained from a sulfite waste liquor, and 7 parts by weight of powdered silica gel; by finely distributing the mixture in water, a spray liquor is obtained.

VI. An intimate mixture of 3 parts by weight of compound no. 1b and 97 parts by weight of particulate kaolin. This dust contains 3% by weight of the active ingredient.

VII. An intimate mixture of 30 parts by weight of compound no. 2b, 92 parts by weight of powdered silica gel and 8 parts by weight of paraffin oil sprayed onto the surface of this silica gel; this formulation of the active ingredient has good adherence.

VIII. A stable aqueous dispersion of 40 parts by weight of compound no. 4b, 10 parts by weight of the sodium salt of a phenolsulfonic acid-ureaformaldehyde condensate, 2 parts of silica gel and 48 parts of water; this dispersion can be further diluted.

IX. A stable oily dispersion of 20 parts by weight of compound no. 9b, 2 parts by weight of the calcium salt of dodecylbenzenesulfonic acid, 8 parts by weight of a fatty alcohol polyglycol ether, 2 parts by weight of the sodium salt of a phenolsulfonic acid-urea-formaldehyde condensate and 68 parts by weight of a paraffinic mineral oil.

In these application forms, the agents according to the invention may also be present together with other active ingredients, for example herbicides, insecticides, growth regulators, and fungicides, and may furthermore be mixed and applied together with fertilizers. Admixture with other fungicides frequently results in an increase in the fungicidal spectrum.

MANUFACTURING EXAMPLES

Example A, according to method a) (compound 7b in table)

N-1-(4-tert.-butylbenzyl)-N-2-methyl-N-3-(3,5,5-trimethyl-hexyl)-guanidine hydroiodide ##STR8##

Under a nitrogen blanket, a mixture of 19 g (0.05 mol) of N-(4-tert.-butylbenzyl)-N',S-dimethylisothiuronium iodide, 14.1 g (0.1 mol) of 3,5,5-trimethylhexylamine, 5 g (0.05 mol) of triethylamine and 20 g of molecular sieve (4 .ANG.) in 200 ml of anhydrous acetonitrile was refluxed for 6 hours with elimination of methanethiol. After filtration while hot, the mixture was worked up in the usual manner.

Yield: 64% of theroy; m.p. 165.degree. C.

Intermediate stage A1 N-(4-tert.-Butylbenzyl)-N'-methylthiourea ##STR9##

At 20.degree. to 30.degree. C., a solution of 163 g (1 mol) of 4-tert.-butylbenzylamine in 100 ml of anhydrous acetonitrile was dripped, while cooling, into a mixture of 73 g (1 mol) of methyl isothiocyanate in 80 ml of anhydrous acetonitrile. The mixture was stirred for 3 hours at 20.degree. C. and then for a further hour at 80.degree. to 90.degree. C. before being evaporated down. The crude product was precipitated with hexane from ethyl acetate, washed with hexane and dried under reduced pressure at 60.degree. C.

Yield: 72% of theory; mp 72.degree. C.

Intermediate stage A2

N-(4-tert-Butylbenzyl)-N',S-dimethylisothiuronium iodide ##STR10##

A solution of 23.6 g (0.1 mol) of N-(4-tert.-butylbenzyl)-N'-methylthiourea and 114.2 g (0.1 mol) of iodomethane in 200 ml of methanol was refluxed for one hour. After the mixture had cooled to room temperature the product was precipitated by adding methyl tert-butyl ether, washed and dried under reduced pressure at 40.degree. C.

Yield: 53% of theory; mp: 172.degree. C.

Example B, according to method a) (compound 20b in table)

N-1-(4-tert.-Butylbenzyl)-N-2-n-octylguanidin hydroiodide ##STR11##

A mixture of 9.1 g (2,5.10.sup.-2 mol) of N-(4-tert.-butylbenzyl)-S-methylisothiuronium iodide, 6.5 g (5.10.sup.-2 mol) of n-octylamine, 2.5 g (25 mmol) of triethylamine, 3 g of molecular sieve (4 .ANG.) and 200 ml of acetonitrile was refluxed for 48 hours and worked up as described in Example A.

Yield: 61% of theory; mp.: 113.degree. C.

Intermediate stage B1

N-(4-tert.-Butylbenzyl)-thiourea ##STR12##

Over a period of 10 minutes, a solution of 147.5 g (1.05 mol) of benzoyl chloride was dripped into a solution of 82.5 g (1.1 mol) of ammonium thiocyanate in 300 ml of absolute acetone. After the mixture had been stirred for 10 minutes at the reflux temperature, a solution of 163 g (1 mol) of 4-tert.-butylbenzylamine in 150 ml of acetone was dripped in, and the reaction mixture was refluxed for 20 minutes and stirred into 2 liters of ice water. The precipitated solid was washed with water, dissolved in a hot mixture of 1 liter of 10% strength caustic solution and 550 ml of ethanol and refluxed for a further 15 minutes.

The mixture was then diluted with ice water, adjusted with concentrated hydrochloric acid to a pH of 1 and then with solid sodium bicarbonate to a pH of about 9. The resulting precipitate was washed with water and dried under reduced pressure at 60.degree. C.

Yield: 92% of theory; mp.: 80.degree. C.

Intermediate stage B2

N-(4-tert.-Butylbenzyl)-S-methylisothiuronium iodide ##STR13##

At 30.degree. to 40.degree. C., 54.4 g (0.333 mol) of iodomethane was dripped into 85 g (0.383 mol) of N-(4-tert.-butylbenzyl)-thiourea in 200 ml of methanol. The mixture was reacted and worked up analogously to Example A, intermediate stage A2; the product was dried at 60.degree. C.

Yield: 74% of theory; mp.: 143.degree. C.

Example C, according to method a) (example 1a in table)

N-1-Cyclohexyl-N-2-(4-tert.-butylbenzyl)-guanidine hydroiodide ##STR14##

30 g (0.1 mol) of N-cyclohexyl-S-methylisothiuronium iodide, 32.6 g (0.2 mol) of 4-tert.-butylbenzylamine, 10.1 g (0.1 mol) of triethylamine and 3 g of molecular sieve (4 .ANG.) were reacted for 48 hours in 200 ml of anhydrous acetonitrile analogously to Example A.

Yield: 95% of theory; mp.: 145.degree.-150.degree. C.

Example D, according to method a) (example 41a in table)

N-1-(3-methyl-cyclohexyl)-N-2-(4-tert.-butylbenzyl)-N-3-methylguanidine hydroiodide ##STR15##

9.5 g (25 mmol) of N-(4-tert.-butylbenzyl)-N', S-dimethylisothiuronium iodide, 5.7 g (50 mmol) of 3-methylcyclohexylamine (isomer mixture), 2.5 g (25 mmol) of triethylamine and 1.5 g of molecular sieve (4 .ANG.) in 100 ml of acetonitrile were reacted for 2 hours analogously to Example A.

Yield: 25% of theory; mp.: 150.degree. C.

Example E, according to method c) (example 11b in table)

N-1-(4-tert.-Butylbenzyl)-N-2-n-butyl-N-3-(2,2-dimethylpropyl)-quanidine hydrochloride ##STR16##

A mixture of 2 g (8,2.10.sup.-3 mol) of N-(4-tert.-butylbenzyl)-N'-n-butyl-carbodiimide, 0.17 g (8,2.10.sup.-3 mol) of 2,2-dimethylpropylamine and 100 ml of anhydrous tert.-butanol was refluxed for 24 hours. An oily product was isolated, methanolic hydrochloric acid was added, and the mixture was concentrated under reduced pressure and crystallized by trituration with methyl tert.-butyl ether.

Yield: 33% of theory; mp.: 88.degree. C.

Example F, according to method c) (example 57a in table)

N-1-(4-tert.-butyl-cyclohexyl)-N-2-n-butyl-N-3-(4-tert.-butylbenyl)-guanidin hydrochloride ##STR17##

2 g (8,2.10.sup.-3 mol) of N-(4-tert.-butylbenzyl)-N'-n-butylcarbodiimide and 1.27 g (8,2.10.sup.-3 mol) of 4-tert.-butylcyclohexylamine were reacted analogously to Example E.

Yield: 30% of theory; mp.: 110.degree. C.

Example G (example 30a in table)

N-1-cyclohexyl-N-2-[3-(4-tert.-butylphenyl)-2-methylpropyl]-guanidine hydrochloride ##STR18##

21.8 g (6,6.10.sup.-2 mol) of N-1-cyclohexyl-N-2-[3-(4-tert.-butylphenyl)-2-methylpropyl]-guanidine hydroiodide (example 26a from Table 1) in 300 ml of methanol/water (1:1) were filtered through a column containing 250 g of Amberlyst A 26 (OH.sup..crclbar. form). After working up, the free guanidine obtained was converted into the hydrochloride with an excess of methanolic hydrochloric acid.

Yield: 80%; mp.: 169.degree. C.

The compounds listed in Table 1 below were obtained analogously to Examples A to G:

TABLE 1__________________________________________________________________________ ##STR19##Comp.No. A R.sup.1 R.sup.2 R.sup.3 R.sup.4 HX mp./IR (film) [cm.sup.-1__________________________________________________________________________ ] 1a cyclohexyl H H H 4-tert.-butylbenzyl HI 145.degree. C. 2a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl HI 180.degree. C. 3a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl HI 140.degree. C. 4a cyclohexyl CH.sub.3 H H 4-tert.-butylbenzyl HI 152.degree. C. 5a cyclohexyl H H H 4-tert.-butylbenzyl HCl 195.degree. C. 6a cyclohexyl H H H 4-tert.-butylbenzyl CH.sub.3 COOH 195.degree. C. 7a cyclohexyl H H H 4-tert.-butylbenzyl (COOH).sub.2 1719, 1703, 1615, 1515, 1445, 1403, 1230, 1202, 1173, 721 8a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl CH.sub.3 COOH 2930, 2854, 1586, 1514, 1463, 1450, 1393, 1364 9a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl HCl 3253, 3200, 3102, 2932, 2856, 1625, 1451, 1366, 1347, 1174 10a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl -- 2936, 1652, 1606, 1487, 1398, 1094, 1072, 1007 11a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl HCl 140.degree. C. 12a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl CH.sub.3 COOH 2962, 2862, 2856, 1667, 1613, 1567, 1514, 1397 13a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl (COOH).sub.2 140.degree. C. 14a cyclohexyl H n-butyl H 4-tert.-butylbenzyl -- 2957, 2929, 2854, 1634, 1512, 1449 15a cyclohexyl H n-butyl H 4-tert.-butylbenzyl HCl 105.degree. C. 16a cyclohexyl H n-butyl H 4-tert.-butylbenzyl CH.sub.3 COOH resin 17a cyclohexyl H H H 4-tert.-butylbenzyl -- 3277, 3179, 2960, 2931, 2854, 1647, 1626 18a cyclohexyl H H H 4-tert.-butylbenzyl HI 128.degree. C. 19a cyclohexyl H H H 4-tert.-butylbenzyl CH.sub.3 COOH 20a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl -- 21a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl HI 22a cyclohexyl H H CH.sub.3 4-tert.-butylbenzyl CH.sub.3 COOH 23a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl -- 24a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl HI 25a cyclohexyl H CH.sub.3 H 4-tert.-butylbenzyl CH.sub.3 COOH 26a cyclohexyl H H H 3-(4-tert.-butylphenyl)- HI 80.degree. C. 2-methylpropyl 27a cyclohexyl H H H 4-(2,3-dimethylbut- HI >200.degree. C. 2-yl)-benzyl 28a cyclohexyl H H H n-tridecyl HI 3283, 3252, 3181, 2926, 2854, 1646, 1631, 1466, 1452, 1369 29a cyclohexyl H H H 6,10-dimethylundec-2-yl HI 3268, 3185, 2928, 2855, 1667, 1646, 1624, 1451 30a cyclohexyl H H H 3-(4-tert.-butylphenyl)- HCl 169.degree. C. 2-methylpropyl 31a cyclohexyl H H H 3-(4-tert.-butylphenyl)- 1/2(COOH).sub.2 110.degree. C. 2-methylpropyl 32a cyclohexyl H H H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 3020, 2959, 2931, 2857, 2-methylpropyl 1648, 1558, 1403, 1363 33a cyclohexyl H n-butyl H benzyl CH.sub.3 COOH 2932, 2856, 1625, 1596, 1569, 1496, 1452, 1399, 1377, 1253 34a cyclohexyl H H H 4-tert.-butylbenzyl -- 145.degree. C. 35a cyclopentyl H H CH.sub.3 4-tert.-butylbenzyl -- 36a cyclopentyl H CH.sub.3 H 4-tert.-butylbenzyl HI 145.degree. C. 37a cyclooctyl H CH.sub.3 H 4-tert.-butylbenzyl HI 82.degree. C. 38a cyclooctyl H H CH.sub.3 4-tert.-butylbenzyl -- 39a cyclododecyl H CH.sub.3 H 4-tert.-butylbenzyl HI 124.degree. C. 40a cyclododecyl H H H 4-tert.-butylbenzyl HI 170.degree. C. 41a 3-methyl- H CH.sub.3 H 4-tert.-butylbenzyl HI 150.degree. C. cyclohexyl 42a 4-tert.-butyl- H CH.sub.3 H 4-tert.-butylbenzyl HI 220.degree. C. cyclohexyl 43a 4-tert.-butyl- H H H 4-tert.-butylbenzyl HI 200.degree. C. cyclohexyl 44a 4-tert.-butyl- H H H 4-tert.-butyloxybenzyl HI 206.degree. C. cyclohexyl 45a 4-isopropyl- H CH.sub.3 H 4-tert.-butylbenzyl HI 2959, 2933, 2867, cyclohexyl 1634, 1513, 1366 46a 4-isopropyl- H H H 4-tert.-butyloxybenzyl HI cyclohexyl 47a 3,3-dimethyl- H H H 4-tert.-butylbenzyl HI 180.degree. C. cyclohexyl 48a 3,3-dimethyl- H H H 4-tert.-butyloxybenzyl -- cyclohexyl 49a 3,3-dimethyl- H H H 3-(4-tert-butylphenyl)- HI 110.degree. C. cyclohexyl 2-methyl-propyl 50a 3-trifluoro- H H H 4-tert.-butylbenzyl HI 90.degree. C. methylcyclohexyl 51a 3-trifluoro- H H H 4-tert.-butyloxybenzyl -- methylcyclohexyl 52a 3-trifluoro- H H H 3-(4-tert-butylphenyl)- HI 95.degree. C. methylcyclohexyl 2-methyl-propyl 53a 3,3-dimethyl- H H H 4-tert.-butylbenzyl HCl >200.degree. C. cyclohexyl 54a 3,3-dimethyl- H H H 4-tert.-butylbenzyl CH.sub.3 COOH 120.degree. C. cyclohexyl 55a 3,3-dimethyl- H H H 4-tert.-butylbenzyl (COOH).sub.2 155.degree. C. cyclohexyl 56a 4-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl CH.sub.3 COOH 2959, 2866, 1629, 1572, cyclohexyl 1515, 1393, 1366 57a 4-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl HCl 110.degree. C. cyclohexyl 58a 3-methyl- H n-butyl H 4-tert.-butylbenzyl HCl 75.degree. C. cyclohexyl 59a 3-methyl- H n-butyl H 4-tert.-butylbenzyl CH.sub.3 COOH 2957, 2929, 2869, 1628, cyclohexyl 1571, 1515, 1458, 1394, 1367, 1268 60a 3-methyl- H H H 4-tert.-butylbenzyl HI 100.degree. C. cyclohexyl 61a 2-methyl- H CH.sub.3 H 4-tert.-butylbenzyl HI 102.degree. C. cyclohexyl 62a cyclohexyl H iso- H 4-tert.-butylbenzyl HCl 135.degree. C. propyl 63a cyclohexyl H but- H 4-tert.-butylbenzyl HCl 105.degree. C. 2-yl 64a cyclohexyl H H H 4-chlorobenzyl HI 80.degree. C. 65a cyclohexyl H H H 2,4-dichlorobenzyl HI 3270, 3274, 2931, 1648, 1624, 1589, 1563, 1544 66a cyclohexyl H H H 4-cyanaboenzyl -- 67a cyclohexyl H H H 4-trifluoromethylbenzyl -- 68a cyclohexyl H H H 1-phenyl-ethyl -- 69a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(4-tert.-butyl- HI 195.degree. C. phenyl)-pyrrolidinyl 70a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(6-methylhept- HI 135.degree. C. 2-yl)-pyrrolidinyl 71a 3,3-dimethyl- H H R.sup.3 + R.sup.4 = 3-(4-tert.-butyl- HI 170.degree. C. cyclohexyl phenyl)-pyrrolidinyl 72a cyclohexyl H H R.sup.3 + R.sup.4 = 4-isopropyl- HI 169.degree. C. piperidinyl 73a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(6-methylhept- HI 110.degree. C. 2-yl)-pyrrolidinyl 74a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(6-methylhept- CH.sub.3 COOH 3272, 3165, 2931, 2859, 2-yl)-pyrrolidinyl 1660, 1617, 1557, 1468, 1452, 1383 75a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(6-methylhept- (COOH).sub.2 3200, 2932, 2859, 1738, 2-yl)-pyrrolidinyl 1647, 1620, 1553, 1467, 1452, 1205 76a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(2,4,4-trimethyl- HI 175.degree. C. pentyl)-pyrrolidinyl 77a 4-tert.-butyl- H H H 3-(4-tert.-butylphenyl)- -- cyclohexyl 2-methylpropyl 78a 4-(2,4,4-tri- H H H 4-tert.-butylbenzyl HI 100.degree. C. methylhex-2-yl)- cyclohexyl 79a 4-(2,4,4-tri- H H H 3-(4-tert-butylphenyl)- -- methylhex-2-yl)- 2-methylpropyl cyclohexyl 80a 4-ethoxy- H H H 4-tert.-butylbenzyl -- cyclohexyl 81a 4-hydroxyethyl- H H H 4-tert.-butylbenzyl -- cyclohexyl 82a 4-chlorocyclo- H H H 4-tert.-butylbenzyl -- hexyl 83a 4-tert.-buto- H H H 4-tert.-butylbenzyl -- oxycyclohexyl 84a 4-tert.-buto- H H H 4-tert.-butyloxybenzyl -- oxycyclohexyl 85a 3,3,5-tri- H H H 4-tert.-butyloxybenzyl -- methylcyclohexyl 86a 3,3,5-tri- H H H 4-tert.-butyloxybenzyl -- methylcyclohexyl 87a 4-chloroethyl- H H H 4-tert.-butyloxybenzyl -- cyclohexyl 88a 4-chloroethyl- H H H 4-tert.-butyloxybenzyl -- cyclohexyl 89a cyclohexyl H H H 4-hydroxybenzyl -- 90a cyclohexyl H H H 4-trichloromethylbenzyl -- 91a cyclohexyl H H H 4-methoxybenzyl HI 48.degree. C. 92a cyclohexyl H H H 2-(4-methoxyphenyl)ethyl HI 3249, 3179, 2932, 1647, 1629, 1513, 1247 93a cyclohexyl H H H C.sub.13 H.sub.27 (isomer mixture) -- 94a cyclohexyl H H H cyclohexylmethyl -- 95a cyclohexyl H H H 2,2-dimethylpropyl -- 96a cyclohexyl H H H n-hexyl -- 97a cyclohexyl H H H n-octyl HI 3285, 3250, 3181, 2929, 2855, 1647, 1631, 1602 98a cyclohexyl H H H 3-methyl-butyl -- 99a cyclohexyl H H H phenethyl --100a cyclohexyl H H H 2-ethylhexyl HI 3284, 3252, 3181, 2958, 2930, 2857, 1647, 1630101a cyclohexyl H H H 6-ethyl-4-oxadecyl --102a cyclohexyl H H H 4-tert.-butyl- -- phenylpropyl103a cyclohexyl H H H 3-tert.-butylbenzyl --104a 2-hydroxy-1,1- H H H 4-tert.-butylbenzyl -- dimethyl-ethyl- cyclohexyl105a cyclohexyl H H H 4-isopropylbenzyl --106a cyclohexyl H H H 4-(2,4,4-trimethyl- -- pentyl)benzyl107a 4-tert.-butyl- H H H 4-tert.-amylbenzyl -- cyclohexyl108a 1-methoxy-1- H H H 4-tert.-butoxybenzyl -- methylethyl- cyclohexyl109a cyclohexyl H H H 4-(1-methoxy-1-methyl- -- ethyl)benzyl110a cyclohexyl H H H 4(1-hydroxy-1-methyl- -- ethyl)benzyl111a cyclohexyl H H H 4-isopropenyl-benzyl --112a cyclohexyl H H H 4-n-butoxy-benzyl --113a 4-tert.-amyl- H H H 4-tert.-butylbenzyl -- cyclohexyl114a cyclohexyl H H H 2-methyl-4-tert.- -- butyl-benzyl115a cyclohexyl H H H 3,5,5-trimethylhexyl --116a cyclohexyl H H H 6,10-14-trimethyl- HI 3273, 3183, 2927, 2855, pentadec-2-yl 1647, 1624, 1597, 1533117a cyclohexyl H H H 4-(4-tert.-butoxy- HI 2974, 2930, 1608, 1450, phenyl)-but-2-yl 1365, 1161118a cyclohexyl H H H 2-(4-tert.-butyl- HI 3291, 3220, 3173, 2965, phenyl)-ethyl 2952, 2931, 1640, 1633119a cyclohexyl H H H 3-chlorobenzyl HI 3249, 3178, 2931, 2854, 1647, 1625, 1597, 1576120a cyclohexyl H H H 5-methyl-oct-2-yl --121a cyclohexyl H H H 3,4,5-trimethoxybenzyl --122a cyclohexyl H H H 4-methoxybenzyl --123a 4-(1-methoxy- H H H 4-tert.-butylcyclohexyl -- 1-methyl)ethyl- cyclohexyl124a cyclohexyl H H H 3-(4-tert.-butylphenyl)- -- 2958, 2928, 2854, 1615, 2-methylpropyl 1570, 1510, 1450, 1363125a cyclohexyl H H R.sup.3 + R.sup.4 = 3-(6-methylhept-2-yl)- -- 2952, 2926, 2853, 1591, pyrrolidinyl 1542, 1518, 1449, 1364126a cyclohexyl H H H benzyl HI 134.degree. C.127a cyclohexyl H H H n-undecyl HI 3283, 3251, 3182, 2927, 2854, 1647, 1630, 1452128a cyclohexyl H H H n-tetradecyl HI 3251, 3180, 2925, 2854, 1648, 1631129a cyclohexyl H H H oct-2-yl HI 3275, 3182, 2929, 2855, 1647, 1624, 1600, 1553130a cyclohexyl H H H 4-phenylbutyl HI 3277, 3182, 3084, 2932, 2856, 1648, 1630, 1452131a cyclohexyl H H R.sup.3 + R.sup.4 = 4-(2,6-dimethyl)- HI 150.degree. C. morpholinyl132a cyclohexyl H H H n-dodecanyl HI 3248, 3180, 2924, 2853, 1647, 1631133a cyclohexyl H H H 2,3-dimethoxy-benzyl HI 178.degree. C.134a cyclohexyl H H H 4-bromobenzyl HI 3369, 3312, 3246, 3188, 2931, 1651, 1624, 1489135a cyclohexyl H H R.sup.3 + R.sup.4 = 3-methyl-4-(4-tert.- HI 128.degree. C. butylphenyl)-pyrrolidinyl136a cyclohexyl H H H 3,4-dichlorobenzyl HI 3281, 3179, 2930, 1648, 1624, 1470137a cyclohexyl H H H 2-chlorobenzyl HI 3248, 3174, 2930, 2854, 1646, 1625, 1444138a cyclohexyl H H R.sup.3 + R.sup.4 = 4-(4-tert-butylphenyl)- HI 205.degree. C. piperidinyl139a cyclohexyl H H CH.sub.3 2,5,7,7-tetramethyl- HI 3300, 3194, 3166, 2950, octyl 2932, 1638, 1616, 1544140a cyclohexyl H H H 4-(1,1,3,3-tetramethyl- HI 75.degree. C. butyl)-benzyl141a cyclohexyl H H H n-pentyl HI 3281, 3250, 3182, 2930, 2856, 1646, 1629, 1600142a cyclohexyl H H H 4-tert.-butylbenzyl H.sub.3 BO.sub.3 72.degree. C.143a cyclohexyl H H H 4-tert.-butylbenzyl acetyl 3282, 3184, 2932, 2855, acetonate 1646, 1629, 1451144a cyclohexyl H H H 4-tert.-butylbenzyl o-hydroxy- 52.degree. C. phenol145a cyclohexyl H H H 4-tert.-butylbenzyl C.sub.6 H.sub.5 COOH 70.degree. C.146a cyclohexyl H H H 4-tert.-butylbenzyl CCl.sub.3 COOH 3317, 3197, 2935, 2859. 1659, 1633, 1324, 832147a cyclohexyl H H H 4-tert.-butylbenzyl 3,4,5- 125.degree. C. (OH).sub.3 C.sub.6 H.sub.5 COOH148a cyclohexyl H H H 4-tert.-butylbenzyl H.sub.2 CO.sub.3 87.degree. C.149a cyclohexyl H H H 4-(1,1,2-trimethyl- HCl 180.degree. C. propyl)-benzyl150a cyclohexyl H H H 4-(1,1,2-trimethyl- CH.sub.3 COOH 250.degree. C. propyl)-benzyl151a cyclohexyl H H H 4-(1,1,3-trimethyl- C.sub.2 H.sub.2 O.sub.4 75.degree. C. propyl)-benzyl152a cyclohexyl H H H n-tridecyl HCl 120.degree. C.153a cyclohexyl H H H n-tridecyl CH.sub.3 COOH 3173, 2925, 2853, 1651, 1569, 1465, 1452, 1404154a cyclohexyl H H H n-tridecyl C.sub.2 H.sub.2 O.sub.4 3299, 3191, 2925, 2853, 1636, 1465, 1453, 1218, 720155a cyclohexyl H H H 6,10-dimethyl-undec- HCl 120.degree. C. 2-yl156a cyclohexyl H H H 6,10-dimethyl-undec- CH.sub.3 COOH 3272, 3175, 2928, 2856, 2-yl 1571, 1450, 1402, 1014157a cyclohexyl H H H 6,10-dimethyl-undec- C.sub.2 H.sub.2 O.sub.4 3272, 3189, 2929, 1628, 2-yl 1603, 1403, 1191, 720158a 4-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl -- 2958, 2862, 1636 cyclohexyl 1512, 1365159a 4-tert.-butyl- H H R.sup.3 + R.sup.4 = 2-methyl-3-(4-tert.- HI 245.degree. C. cyclohexyl butylphenyl)-pyrrolidinyl160a 4-tert.-butyl H H H 3-(morpholin-4-yl)- HI 3276, 3186, 2947, 2860, cyclohexyl prop-1-yl 1630, 1450, 1141, 1116161a 4-tert.-butyl H H CH.sub.3 2,5,7,7-tetramethyl- HI 202.degree. C. cylcohexyl octyl162a 4-tert.-butyl- H H H 2,4-dichlorobenzyl HI 163.degree. C. cyclohexyl163a 4-tert.-butyl- H H H 4-tert.-butylbenzyl HCl 162.degree. C. cyclohexyl164a 4-tert.-butyl- H H H 4-tert.-butylbenzyl CH.sub.3 COOH 170.degree. C. cyclohexyl165a 4-tert.-butyl- H H H 4-tert.-butylbenzyl C.sub.2 H.sub.2 O.sub.4 102.degree. C. cyclohexyl166a 3-methyl- H n-butyl H 4-tert.-butylbenzyl -- 2955, 2925, 2867, cyclohexyl 1636, 1512, 1458167a 2-methyl- H H H 4-tert.-butylbenzyl HI 144.degree. C. cyclohexyl168a 3-methyl- H CH.sub.3 H 4-tert.-butylbenzyl HCl 142.degree. C. cyclohexyl169a 3-methyl- H CH.sub.3 H 4-tert.-butylbenzyl CH.sub.3 COOH 102.degree. C. cyclohexyl170a 3-methyl- H CH.sub.3 H 4-tert.-butylbenzyl C.sub.2 H.sub.2 O.sub.4 173.degree. C. cyclohexyl171a 3-methyl- H H H 6,10-dimethylundec- CH.sub.3 COOH 3179, 3092, 2951, 2927, cyclohexyl 2-yl 2867, 1644, 1557, 1460172a 2,6-dimethyl- H H H 3(4-tert.-butylphenyl)- HI 3188, 2960, 2929, cyclohexyl 2-methylpropyl 2871, 1569, 1463173a 4-hydroxy H H H 4-tert.-butylbenzyl HI 100.degree. C. cyclohexyl174a 3-methyl- H H H 4-tert.-butylbenzyl HCl 130.degree. C. cyclohexyl175a 3-methyl- H H H 4-tert.-butylbenzyl CH.sub.3 COOH 105.degree. C. cyclohexyl176a 3-methyl- H H H 4-tert.-butylbenzyl C.sub.2 H.sub.2 O.sub.4 95.degree. C. cyclohexyl177a 3,3-dimethyl- H H H 3-(4-tert.-butylphenyl)- HCl 100.degree. C. cyclohexyl 2-methylpropyl178a 3,3-dimethyl- H H H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 100.degree. C. cyclohexyl 2-methylpropyl179a 3,3-dimethyl- H H H 3-(4-tert.-butylphenyl)- C.sub.2 H.sub.2 O.sub.4 112.degree. C. cyclohexyl 2-methylpropyl180a cyclopentyl H H H 4-tert.-butylbenzyl HI 88.degree. C.181a cyclopentyl H H H 3-(4-tert.-butylbenzyl)- CH.sub.3 COOH 3304, 3184, 3089, 2962, 2-methylpropyl 2871, 1650, 1561, 1401182a cyclopentyl H H H 6,10-dimethylundec-2-yl CH.sub.3 COOH 3175, 2955, 2927, 2869, 1646, 1560, 1400183a cycloheptyl H H H 4-tert.-butylbenzyl HI 3253, 3180, 2960, 2927, 2857, 1645, 1626, 1460184a cyclooctyl H H H 4-tert.-butylbenzyl HI 90.degree. C.185a cyclooctyl H H H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 3186, 3091, 2961, 2924, 2-methylpropyl 2868, 1649, 1561, 1404186a cyclooctyl H H H 6,10-dimethyl-undec- CH.sub.3 COOH 2951, 2925, 2867, 1643, 2-yl 1559, 1465, 1400187a cyclohexyl H iso- H 4-tert.-butylbenzyl CH.sub.3 COOH 72.degree. C. propyl188a cyclohexyl H but- H 4-tert.-butylbenzyl CH.sub.3 COOH 80.degree. C. 2-yl 1b p-tert.butyl- H CH.sub.3 H 3-(4-tert.butylphenyl)- HCl 125.degree. C. benzyl 2-methylpropyl 2b p-tert.-butyl- H CH.sub.3 R.sup.3 + R.sup.4 = 4-tert.butyl- HI 155.degree. C. benzyl piperidinyl 3b p-tert.-butyl- H CH.sub.3 H 4-tert.-butylbenzyl -- 2963, 2904, 2867, 1863, benzyl 1637, 1513, 1476, 1464 4b p-tert.-btuyl- H CH.sub.3 H 4-tert.-butylbenzyl HCl 125.degree. C. benzyl 5b p-tert.-butyl- H CH.sub.3 H 4-tert.butylbenzyl CH.sub.3 COOH 2963, 2905, 1638, 1568, benzyl 1514, 1477, 1393, 1365 6b p-tert.-butyl- H CH.sub.3 H cyclohexylmethyl HI 186.degree. C. benzyl 7b p-tert.-butyl- H CH.sub.3 H 3,5,5-trimethylhexyl HI 165.degree. C. benzyl 8b benzyl H n-butyl H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 2958, 2928, 2869, 1639, 2-methylpropyl 1510, 1495, 1453, 1362 9b p-tert.-butyl- H n-butyl R.sup.3 + R.sup.4 = cis-2,6-dimethyl- CH.sub.3 COOH 2963, 2935, 2872, 1627, benzyl morpholin-4-yl 1590, 1269, 1087 10b p-tert.-butyl- H n-butyl R.sup.3 + R.sup.4 = cis-2,6-dimethyl- HCl 60.degree. C. benzyl morpholin-4-yl 11b p-tert.-butyl- H n-butyl H 2,2-dimethylpropyl HCl 88.degree. C. benzyl 12b p-tert.-butyl- H n-butyl H 2,2-dimethylpropyl CH.sub.3 COOH 2962, 2872, 1630, 1574, benzyl 1394, 1366 13b p-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl CH.sub.3 COOH 2962, 2906, 1634, 1570, benzyl 1394 14b p-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl HCl 102.degree. C. benzyl 15b p-tert.-butyl- H n-butyl H 3-(4-tert.-butylphenyl)- HCl 95 to 100.degree. C. benzyl 2-methylpropyl 16b p-tert.-butyl- H n-butyl H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 2962, 2933, 1633, 1571, benzyl 2-methylpropyl 1394, 1364 17b p-tert.-butyl- H n-butyl H n-pentyl -- benzyl 18b p-tert.-butyl- H H H n-hexyl HI 156.degree. C. benzyl 19b p-tert.-butyl- H H H n-heptyl HI 135.degree. C. benzyl 20b p-tert.-butyl- H H H n-octyl HI 113.degree. C. benzyl 21b p-tert.-butyl- H H H n-nonyl HI 3247, 3179, 2956, 2924, benzyl 2854, 1649, 1629, 1465 22b p-tert.-butyl- H H H n-decyl HI 3248, 3179, 2957, 2925, benzyl 2855, 1649, 1630, 1466 23b p-tert.-butyl- H H H n-dodecyl HI 3247, 3180, 2957, 2924, benzyl 2854, 1649, 1630, 1466 24b p-tert.-butyl- H CH.sub.3 H n-hexyl HI 177.degree. C. benzyl 25b p-tert.-butyl- H CH.sub.3 H n-octyl HI 122.degree. C. benzyl 26b p-tert.-butyl- H CH.sub.3 H n-decyl HI 85.degree. C. benzyl 27b p-tert.-butyl- H CH.sub.3 H n-dodecyl HI 96.degree. C. benzyl 28b p-tert.-butyl- H CH.sub.3 H 2,2-dimethylpropyl HI 165.degree. C. benzyl 29b p-tert.-butyl- H CH.sub.3 H 3-methyl-butyl HI 137.degree. C. benzyl 30b p-tert.-butyl- H CH.sub.3 R.sup.3 + R.sup.4 = piperidinyl HI 82.degree. C. benzyl 31b p-tert.-butyl- H CH.sub.3 H phenethyl HI 87.degree. C. benzyl 32b p-tert.-butyl- H CH.sub.3 H benzyl HI 124.degree. C. benzyl 33b p-tert.-butyl- H CH.sub.3 H 3-(4-tert.-butylphenyl)- HI 165.degree. C. benzyl 2-methylpropyl 34b p-tert.-butyl- H CH.sub.3 H 2-ethyl-hexyl HI 65.degree. C. benzyl 35b p-tert.-butyl- H CH.sub.3 H n-tridecyl HI 105.degree. C. benzyl 36b p-tert.-butyl- H CH.sub.3 H 4-methoxy-phenethyl HI 137.degree. C. benzyl 37b p-tert.-butyl- H CH.sub.3 H 6-ethyl-4-oxa-decyl HI 3218, 2959, 2929, 2870, benzyl 1623, 1462, 1380, 1109 38b p-tert.-butyl- H CH.sub.3 H 4-phenyl-but-2-yl HI 102.degree. C. benzyl 39b p-tert.-butoxy- H H H 4-tert.-butyl-cyclo- HI 192.degree. C. benzyl hexylmethyl 40b p-tert.-butyl- H H H 4-tert.-butyl-cyclo- HI 192.degree. C. benzyl hexylmethyl 41b p-tert.-butyl- H H H 1-phenyl-ethyl HI 70.degree. C. benzyl 42b p-tert.-butyl- H H H 4-phenyl-but-2-yl HI 75.degree. C. benzyl 43b p-tert.-butyl- H H H 3-diethylaminopropyl HI 3243, 3179, 2964, 2870, benzyl 2822, 1629, 1465, 1366 44b p-tert.-butyl- H H H 4-methoxy-phenethyl HI 3303, 3185, 3164, 1643, benzyl 1632, 1595, 1512, 1242 45b p-tert.-butyl- H H H phenethyl HI 130.degree. C. benzyl 46b p-tert.-butyl- H H H 2-ethylhexyl HI 3251, 3181, 2960, 2929, benzyl 2872, 1649, 1630, 1464 47b p-tert.-butyl- H H H benzyl HI 58.degree. C. benzyl 48b p-tert.-butyl- H H R.sup.3 + R.sup.4 = 4-tert.-butyl- HI 183.degree. C. benzyl piperidinyl 49b p-tert.-butyl- H H H 4-tert.-butylbenzyl HI 182.degree. C. benzyl 50b p-tert.-butyl- H H H 3-(4-tert.-butylphenyl)- HI 152.degree. C. benzyl 2-methylpropyl 51b p-tert.-butyl- H H H tridecyl HI 89.degree. C. benzyl 52b p-tert.-butyl- H H H 6-ethyl-4-oxa-decyl HI 100.degree. C. benzyl 53b p-tert.-butyl- H H R.sup.3 + R.sup.4 = piperidinyl HI 72.degree. C. benzyl 54b p-tert.-butyl- H CH.sub.3 H 4-tert.-butyl-cyclo- HI 125.degree. C. benzyl hexylmethyl 55b p-tert.-butyl- H CH.sub.3 H 3-diethylaminopropyl HI 3210, 3102, 2964, 2870, benzyl 1620, 1458, 1383, 1364 56b p-tert.-butyl- H CH.sub.3 H 1-phenyl-ethyl HI 163.degree. C. benzyl 57b p-(1,1-dimethyl- H H H n-hexyl -- ethyl)-benzyl 58b p-(1,1-dimethyl- H H H n-heptyl -- ethyl)-benzyl 59b p-(1,1-dimethyl- H H H n-octyl -- ethyl)-benzyl 60b p-(1,1-dimethyl- H H H n-nonyl -- ethyl)-benzyl 61b p-(1,1-dimethyl- H H H tert.-butylbenzyl -- ethyl)-benzyl 62b p-(1,1-dimethyl- H H H 3-methylbutyl -- ethyl)-benzyl 63b p-(1,1-dimethyl- H H H 3-(4-tert.-butylphenyl)- -- ethyl)-benzyl 2-methylpropyl 64b p-tert.-butoxy- H H H n-hexyl -- benzyl 65b p-tert.-butoxy- H H H n-heptyl -- benzyl 66b p-tert.-butoxy- H H H n-octyl -- benzyl 67b p-tert.-butoxy- H H H n-nonyl -- benzyl 68b p-tert.-butoxy- H H H n-decyl -- benzyl 69b p-tert.-butoxy- H H H 3-methylbutyl -- benzyl 70b p-tert.-butoxy- H H H tert.-butylbenzyl -- benzyl 71b p-tert.-butoxy- H H H tert.-butoxybenzyl -- benzyl 72b p-tert.-butoxy- H H H n-octyl -- benzyl 73b p-(1,1,2-tri- H H H n-hexyl -- methylpropyl)- benzyl 74b p-(1,1,2-tri- H H H n-heptyl -- methylpropyl)- benzyl 75b p-(1,1,2-tri- H H H n-octyl -- methylpropyl)- benzyl 76b p-(1,1,2-tri- H H H n-nonyl -- methylpropyl)- benzyl 77b p-(1,1,2-tri- H H H n-decyl -- methylpropyl)- benzyl 78b p-tert.-butyl- H CH.sub.3 H cyclohexylmethyl HCl 155.degree. C. benzyl 79b p-tert.-butyl- H CH.sub.3 H cyclohexylmethyl CH.sub.3 COOH 82.degree. C. benzyl 80b p-tert.-butyl- H CH.sub.3 H cyclohexylmethyl (COOH).sub.2 168.degree. C. benzyl 81b p-tert.-butyl- H CH.sub.3 H 3,5,5-trimethylhexyl (COOH).sub.2 180.degree. C. benzyl 82b p-tert.-butyl- H CH.sub.3 H 3,5,5-trimethylhexyl CH.sub.3 COOH 75.degree. C. benzyl 83b p-tert.-butyl- H CH.sub.3 H 3,5,5-trimethylhexyl HCl 107.degree. C. benzyl 84b p-tert.-butyl- H CH.sub.3 H n-hexyl HCl 105.degree. C. benzyl 85b p-tert.-butyl- H CH.sub.3 H n-hexyl CH.sub.3 COOH 110.degree. C. benzyl 86b p-tert.-butyl- H CH.sub.3 H n-hexyl (COOH).sub.2 185.degree. C. benzyl 87b p-tert.-butyl- H CH.sub.3 H 3-methylbutyl (COOH).sub.2 182.degree. C. benzyl 88b p-tert.-butyl- H CH.sub.3 H 3-methylbutyl CH.sub.3 COOH 72.degree. C. benzyl 89b p-tert.-butyl- H CH.sub.3 H 3-methylbutyl HCl 105.degree. C. benzyl 90b p-tert.-butyl- H H H 6-ethyl-4-oxa-decyl HCl oil, 3260, 3173, 2959, 2930, benzyl 2871, 1655, 1637, 1464 91b p-tert.-butyl- H H H 6-ethyl-4-oxa-decyl CH.sub.3 COOH oil, 2959, 2929, 2870, 1653, benzyl 1560, 1515, 1403, 1110 92b p-tert.-butyl- H H H 6-ethyl-4-oxa-decyl (COOH).sub.2 oil, 3183, 2958, 2929, 2870, benzyl 1633, 1462, 1220, 1109 93b p-tert.-butyl- H H H 4-tert.-butoxybenzyl (COOH).sub.2 118.degree. C. benzyl 94b p-tert.-butyl- H H H 4-tert.-butoxybenzyl CH.sub.3 COOH 168.degree. C. benzyl 95b p-tert.-butyl- H CH.sub.3 H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 97.degree. C. benzyl 2-methylpropyl 96b p-tert.-butyl- H CH.sub.3 H 3-(4-tert.-butylphenyl)- H.sub.3 BO.sub.3 149.degree. C. benzyl 2-methylpropyl 97b p-tert.-butyl- H CH.sub.3 H 3-(4-tert.-butylphenyl)- -- 2960, 2903, 2867, 1636, benzyl 2-methylpropyl 1512, 1474, 1462, 1362 98b p-tert.-butyl H H H 2-ethylhexyl HCl 80.degree. C. benzyl 99b p-tert.-butyl H H H 2-ethylhexyl CH.sub.3 COOH 2959, 2928, 2870, 1569, benzyl 1462, 1402, 1363, 1269100b p-tert.-butyl H H R.sup.3 + R.sup.4 = 4-tert.-butyl- HCl 250.degree. C. benzyl piperidinyl101b p-tert.-butyl H H R.sup.3 + R.sup.4 = 4-tert.-butyl- CH.sub.3 COOH benzyl piperidinyl102b p-tert.-butyl H H H 3-(4-tert.-butylphenyl)- HCl 90.degree. C. benzyl 2-methylpropyl103b p-tert.-butyl H H H 3-(4-tert.-butylphenyl)- CH.sub.3 COOH 3278, 3198, 2961, 1635, benzyl 2-methylpropyl 1606, 1561, 1516, 1409104b p-tert.-butyl H H H 4-hydroxybenzyl HCl 3323, 3263, 3170, 2961, benzyl 1651, 1614, 1513, 1267105b p-tert.-butyl H H H 4-hydroxybenzyl CH.sub.3 COOH 3180, 3026, 2962, 1645, benzyl 1614, 1554, 1462, 1409106b p-tert.-butyl H H CH.sub.3 2,5,7,7-tetramethyl- HI 58.degree. C. benzyl octyl107b p-tert.-butyl H CH.sub.3 H 4-tert.-butylbenzyl HI 90.degree. C. benzyl108b p-tert.-butyl- H H R.sup.3 + R.sup.4 = 3-(1,5-dimethylhexyl)- HJ 172.degree. C. benzyl pyrrolidinyl109b p-tert.-butyl- H H R.sup.3 + R.sup.4 = 3-(1,5-dimethylhexyl)- HCl 190.degree. C. benzyl pyrrolidinyl110b p-tert.-butyl- H H R.sup.3 + R.sup.4 = 3-(1,5-dimethylhexyl)- CH.sub.3 COOH 2955, 2928, 2868, 1610, benzyl pyrrolidinyl 1573, 1465, 1448, 1402111b p-tert.-butyl- H H H n-undecyl HI 3249, 3181, 2956, 2924, benzyl 2853, 1649, 1629, 1464112b p-tert.-butyl- H H H 6-hydroxyhexyl HI 3287, 3198, 2932, 2859, benzyl 1650, 1629, 1547, 1462113b p-tert.-butyl- H H H 2-(2-hydroxyethoxy)- HI 3299, 3188, 2958, 2869, benzyl ethyl 1651, 1631, 1122, 1065114b p-tert.-butyl- H H H 6-hydroxy-6-methyl-hept- HI 3297, 3188, 2964, 2867, benzyl 2-yl 1626, 1602, 1556, 1462115b p-tert.-butyl- H H H 6,10-dimethyl-undec- HI 3249, 3180, 2954, 2926, benzyl 2-yl 2867, 1646, 1626, 1462116b p-tert.-butyl- H H H 2,2-dimethylpropyl HI 85.degree. C. benzyl117b p-tert.-butyl- H H H 3-methylbutyl HI 122.degree. C. benzyl118b p-tert.-butyl- H CH.sub.3 H n-butyl HI 135.degree. C. benzyl119b p-tert.-butyl- H CH.sub.3 H n-pentyl HI 147.degree. C. benzyl120b p-tert.-butyl- H n-butyl H cis-2,6-dimethyl-morpholin- -- 2962, 2931, 2904, 2869, benzyl 4-yl 1637, 1375, 1144, 1086121b p-tert.-butyl- H n-butyl H 2,2-dimethylpropyl -- 2956, 2904, 2867, 1649, benzyl 1513, 1476, 1464, 1362122b p-tert.-butyl- H n-butyl H 4-tert.-butylbenzyl -- 2959, 2931, 2904, 2868, benzyl 1633, 1513, 1463, 1362123b p-tert.-butyl- H n-butyl H 3-(4-tert.-butyl-phenyl)- -- 2960, 2928, 2869, 1640, benzyl 2-methylpropyl 1512, 1462, 1362, 1269124b p-tert.-butyl- H H H n-butyl HI 3248, 3182, 2959, 2932, benzyl 2870, 1649, 1630, 1463125b p-tert.-butyl- H H H n-pentyl HI 120.degree. C. benzyl__________________________________________________________________________

USE EXAMPLES

The active ingredients N-1-(4-tert-butylphenyl)-N-2-cyclohexyl-N-3-allylguanidine (A), N-1-(4-tert-butylphenyl)-N-2-cyclohexyl-N-3-(3-N,N-dimethylamino-n-propyl)-guanidine (B) and N-1-(4-tert-butylphenyl)-N-2-cyclohexyl-N-3-(4-tert-butylcyclohexyl)-guanidine (C) disclosed in DE-A 31 08 564 were used for comparison purposes.

EXAMPLE 1

Action on Pyrenophora teres

Barley seedlings of the "Igri" variety were sprayed to runoff at the two-leaf stage with aqueous suspensions consisting (dry basis) of 80% of active ingredient and 20% of emulsifier. After 24 hours the plants were inoculated with a spore suspension of the fungus Pyrenophora teres, and set up for 48 hours in a high-humidity climatic cabinet at 18.degree. C. The plants were then cultivated for a further 5 days in the greenhouse at 20.degree. to 22.degree. C. and a relative humidity of 70.degree. C. The extent of fungus spread was then assessed.

The results show that active ingredients 1a, 5a, 7a, 11a, 13a, 27a, 28a, 31a, 32a, 39a, 49a, 54a, 57a, 75a, 1b, 3b, 4b, 7b, 8b, 13b, 14b, 15b, 16b, 18b, 20b, 22b, 23b, 25b, 26b, 34b, 37b, 52b and 54b, applied as 0.05 wt % spray liquors, have a better fungicidal action (85%) than prior art comparative ingredients A, B and C (55%).

EXAMPLE 2

Action on wheat mildew

Leaves of pot-grown wheat seedlings of the "Kanzler" variety were sprayed with 0.025% aqueous spray liquors containing (dry basis) 80% of active ingredient and 20% of emulsifier, and dusted, 24 hours after the sprayed-on liquor had dried, with spores of wheat mildew (Erysiphe graminis var. tritici). The plants were then set up in the greenhouse at from 20.degree. to 22.degree. C. and a relative humidity of 75 to 80%. The extent of fungus spread was assessed after 7 days.

The results show that active ingredients 1a, 15a, 26a, 32a, 47a, 49a, 56a, 69a, 70a, 2b, 6b, 9b, 11b, 12b, 13b, 29b, 31b, 34b, 35b, 36b, 38b, 45b and 46b, applied as 0.025 wt % spray liquors, have a better fungicidal action (85%) than prior art comparative ingredients B and C (60%).

Claims

1. A substituted quanidine of the formula I ##STR20## where A is benzyl which is substituted in the para-position by C.sub.1 -C.sub.10 -alkyl, where the substituent may furthermore carry a hydroxyl or C.sub.1 -C.sub.6 -alkoxy group;

R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, and

R.sup.4 is C.sub.8 -C.sub.14 -alkyl which may be interrupted by oxygen, or is a C.sub.5 -C.sub.18 -alkenyl group, a C.sub.4 -C.sub.18 -alkynyl group or a benzyl group, where these groups may carry up to three of the following substituents: hydroxyl, halogen, cyano, C.sub.1 -C.sub.7 -alkoxy or up to two amino, C.sub.1 -C.sub.4 -alkylamino or di-C.sub.1 -C.sub.4 -alkylamino substituents, and the phenyl moiety of the phenylalkyl group may additionally carry a phenoxy group or up to three C.sub.2 -C.sub.4 -alkenyl groups, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl groups or C.sub.1 -C.sub.6 -alkyl groups which may be unsubstituted or partially or completed halogenated, or C.sub.5 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl groups or up to two hydroxyl or trifluoromethyl groups; or together with the radical R.sup.3 and the nitrogen atom, may form a 5- or 6-membered heterocyclic ring which may be mono- to trisubstituted by C.sub.1 -C.sub.6 -alkyl, phenyl or C.sub.1 -C.sub.6 -alkylphenyl and may be interrupted by an oxygen atom;

and the plant-tolerated mineral acid salts I-HX and metal complexes of 1.

2. A guanidine as set forth in claim 1, where the substituents have the following meanings:

A is p-tert-butyl-benzyl;

R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl;

R.sup.4 is C.sub.6 -C.sub.14 -alkyl which may be interrupted by oxygen, or is C.sub.5 -C.sub.18 -alkenyl, C.sub.4 -C.sub.18 -alkynyl or phenyl-C.sub.1 -C.sub.6 -alkyl, and these groups may carry up to three of the following substituents: hydroxyl, halogen, cyano, C.sub.1 -C.sub.7 -alkoxy or up to two amino, C.sub.1 -C.sub.4 -alkylamino or di-(C.sub.1 -C.sub.4)-alkylamino substituents, and where the phenyl moiety of the phenylalkyl group may additionally contain a phenoxy group or up to three C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.6 -alkyl groups which may be unsubstituted or partially or completely halogenated, or a C.sub.5 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl group where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl groups or up to two hydroxyl or trifluoromethyl groups; or together with the radical R.sup.3 and the nitrogen atom may form a 5- or 6-membered heretocyclic ring which may be mono-or disubstituted by C.sub. 1 -C.sub.6 -alkyl, phenyl or C.sub.1 -C.sub.6 -alkylphenyl and may be interrupted by an oxygen atom;

and the plant-tolerated mineral acid salts I.HX and metal complexes of I.

3. A fungicidal composition containing a fungicidally effective amount of at least one guanidine of the formula I, or a plant-tolerated salt or metal complex thereof, as set forth in claim 1, and a liquid or solid carrier.

4. A fungicidal composition containing a fungicidally effective amount of at least one guanidine of the formula I, or a plant-tolerated salt or metal complex thereof, as set forth in claim 3, and a liquid or solid carrier.

5. A method for combating fungi, wherein a fungicidally effective amount of a substituted guanidine of the formula I, ##STR21## where: A is benzyl which is substituted in the para-position by C.sub.1 -C.sub.10 -alkyl or C.sub.1 -C.sub.10 -alkoxy, where the substituent may furthermore carry a hydroxyl or C.sub.1 -C.sub.6 -alkoxy group;

R.sup.1, R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, and

R.sup.4 is C.sub.6 -C.sub.14 -alkyl which may be interrupted by oxygen, or is a C.sub.5 -C.sub.18 -alkenyl group, a C.sub.4 -C.sub.18 -alkynyl group or a phenyl-C.sub.1 -C.sub.6 -alkyl group, where these groups may carry up to three of the following substituents: hydroxyl, halogen, cyano, C.sub.1 -C.sub.7 -alkoxy or up to two amino, C.sub.1 -C.sub.4 -alkylamino or di-C.sub.1 -C.sub.4 -alkylamino substituents, and the phenyl moiety of the phenylalkyl group may additionally carry a phenoxy group or up to three C.sub.2 -C.sub.4 -alkenyl groups, C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.4 -alkyl groups or C.sub.1 -C.sub.6 -alkyl groups which may be unsubstituted or partially or completely halogenated, or C.sub.5 -C.sub.6 -cycloalkyl-C.sub.1 -C.sub.8 -alkyl where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl where the cycloalkyl ring may carry up to three C.sub.1 -C.sub.4 -alkyl groups or up to two hydroxyl or trifluoromethyl groups; or, together with the radical R.sup.3 and the nitrogen atom, may form a 5- or 6-membered heterocyclic ring which may be mono- to trisubstituted by C.sub.1 -C.sub.6 -alkyl, phenyl or C.sub.1 -C.sub.6 -alkyl-phenyl and may be interrupted by an oxygen atom;

or the plant-tolerated mineral acid salts I.HX and metal complexes of I,

is placed in contact with fungi, or the plants or their habitat threatened by fungus attack, or on the seed of the threatened plants.

6. The HI acid salt compound of claim 1 wherein A is p-tert.-butyl-benzyl, R.sup.1 is H, R.sup.2 is H, R.sup.3 is H and R.sup.4 is 2-ethylhexyl.

7. The method of claim 5 wherein the compound of formula I is the HI acid salt, A is p-tert.-butyl-benzyl, R.sup.1 is H, R.sup.2 is H, R.sub.3 is H and R.sup.4 is 2-ethylhexyl.

8. The composition of claim 3 wherein the compound of formula I is the HI acid salt, A is p-tert.-butyl-benzyl, R.sup.1 is H, R.sup.2 is H, R.sup.3 is H and R.sup.4 is 2-ethylhexyl.