IL104091A - Fungicidal compositions containing 2-imidazolin- 5-one and 2-imidazolin-5- thione derivatives, some such derivatives and process for their preparation - Google Patents

Fungicidal compositions containing 2-imidazolin- 5-one and 2-imidazolin-5- thione derivatives, some such derivatives and process for their preparation

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IL104091A
IL104091A IL104091A IL10409192A IL104091A IL 104091 A IL104091 A IL 104091A IL 104091 A IL104091 A IL 104091A IL 10409192 A IL10409192 A IL 10409192A IL 104091 A IL104091 A IL 104091A
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carbon atoms
radical
alkyl
group
phenyl
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IL104091A
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Guy Lacroix
Raymond Peignier
Regis Pepin
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Rhone Poulenc Agrochimie
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C331/00—Derivatives of thiocyanic acid or of isothiocyanic acid
    • C07C331/16—Isothiocyanates
    • C07C331/18—Isothiocyanates having isothiocyanate groups bound to acyclic carbon atoms
    • C07C331/20—Isothiocyanates having isothiocyanate groups bound to acyclic carbon atoms of a saturated carbon skeleton
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    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C333/00—Derivatives of thiocarbamic acids, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
    • C07C333/14—Dithiocarbamic acids; Derivatives thereof
    • C07C333/18—Esters of dithiocarbamic acids
    • C07C333/20—Esters of dithiocarbamic acids having nitrogen atoms of dithiocarbamate groups bound to hydrogen atoms or to acyclic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/84—Sulfur atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/86—Oxygen and sulfur atoms, e.g. thiohydantoin
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/06—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/06—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links

Abstract

The invention relates to 2-imidazolin-5-one or 2-imidazoline-5-thione derivatives of general formula (I) <IMAGE> in which, - W is a sulphur or oxygen atom or the S=O group, - A represents O or S - n = 0 or 1 - B represents NR5 or O or S or CR5R6 or SO2 or C=O - R1 to R4 represent a hydrogen atom or a hydrocarbon radical, optionally substituted, especially by halogen atoms. The invention also relates to the preparation of these compounds and to their use as broad-spectrum fungicides. [EP0551048A1]

Description

/16/925 104091/2 inwn nm nixnv nvriroi *io?o ,]ΐ >η-5·)^η Τ>ο> -Μ FUNGICIDAL COMPOSITIONS CONTAINING 2-IMIDAZOLIN-5-ONE AND 2-IMIDAZOLINE-5-THIONE DERTVATIVES, SOME SUCH DERIVATIVES AND PROCESS FOR THEIR PREPARATION The present invention relates to new imidazol none or imidazolinthione compounds for use plant protection. It also relates to the processes the preparation of the said compounds.
The invention further relates to the fungicidal compositions based on these compounds and to the . processes for combating fungal diseases of crops using these compounds. ' One object of the present invention is to provide compounds which' have improved properties in the treatment of fungal diseases.
Another object of the present invention is to provide compounds which have a use spectrum in the field of fungal diseases which is also improved.
It has now been found that these objects can be achieved by virtue of the products of the invention, which are 2-imidazolin-5-one or 2-imidazoline-5-thione derivatives of general formula (I) in which: - W is a sulphur or oxygen atom or an S=0 group - A represents 0 or S - n = 0 or 1 - B represents NR5 or 0 or S or CR5R6 or S02 or C=0. - Ri and R2, which are identical or different, represent: - H, provided that one of the 2 groups is different from H, or - an alkyl or haloalkyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , alkylsulphonyl-alkyl, monoalkylaminoalkyl, alkenyl or alkynyl radical containing 2 to 6 carbon atoms or - a dialkylaminoalkyl or cycloalkyl radical containing 3 to 7 carbon atoms or - an aryl radical comprising phenyl, naphthyl, thienyl, furyl, pyridyl, benzothienyl, benzofuryl, quinolyl, isoquinolyl, or methylenedioxyphenyl , optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl , arylthioalkyl or arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - Rx and R2 can form, with the carbon to which they are bonded on the ring, a carbocycle or a heterocycle having from 5 to 7 atoms, it being possible for these rings to be fused to a phenyl, optionally substituted by 1 to 3 groups chosen from R7; - R3 represents: - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , alkylsulphonyl-alkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl , oxoalkyl, alkenyl or alkynyl group containing 2 to 6 carbon atoms or - a dialkylaminoalkyl, alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a Ν,Ν-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an arylalkyl group, the alkyl part being a radical containing 1 to 6 carbon atoms and the aryl part is phenyl, naphthyl, thienyl, furyl or pyridyl, optionally substituted by 1 to 3 groups chosen from R7; - R<> represents : - a hydrogen atom when n is equal to 1 or - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl , alkenyl or alkynyl group containing 2 to 6 carbon atoms or - a dialkylaminoalkyl, alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a N,N-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an aryl radical, comprising phenyl, naphthyl, thienyl, furyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuryl, quinolyl, isoquinolyl or methylenedioxyphenyl, optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl, arylthioalkyl or arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - an amino group disubstituted by 2 identical or different groups chosen from: - an alkyl radical containing 1 to 6 carbon atoms - an alkoxyalkyl, alkenyl or alkynyl radical containing 3 to 6 carbon atoms - a cycloalkyl radical containing 3 to 7 carbon atoms - an arylalkyl, such as defined above, phenyl or naphthyl radical, optionally substituted by 1 to 3 groups chosen from R7 or - a thienylmethyl or furfuryl radical - a pyrrolidino, piperidino, morpholino or piperazino group, optionally substituted by alkyl containing 1 to 3 carbon atoms; - R5 represents: - H, except when R< is H, or - an alkyl, haloalkyl, alkylsulphonyl or haloalkylsulphonyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , acyl, alkenyl, alkynyl, haloacyl, alkoxycarbonyl, haloalkoxycarbonyl, alkoxyalkylsulphonyl or cyanoalkylsulphonyl radical containing 2 to 6 carbon atoms or - an alkoxyalkoxycarbonyl, alkylthioalkoxycarbonyl or cyanoalkoxycarbonyl radical containing 3 to 6 carbon atoms or - a formyl radical or - a cycloalkyl, alkoxyacyl, alkylthioacyl , cyanoacyl, alkenylcarbonyl or alkynylcarbonyl radical containing 3 to 6 carbon atoms or - a cycloalkylcarbonyl radical containing 4 to 8 carbon atoms or - a phenyl; arylalkylcarbonyl, especially phenyl-acetyl and phenylpropionyl; arylcarbonyl, especially benzoyl, optionally substituted by 1 to 3 groups from R7; thienylcarbonyl ; furylcarbonyl; pyridylcarbonyl; benzyloxycarbonyl; furf ryloxycarbonyl ; tetrahydro-furfuryloxycarbonyl; thienylmethoxycarbonyl; pyridyl-methoxycarbonyl ; phenoxycarbonyl or (phenylthio) carbonyl, the phenyl being itself optionally substituted by 1 to 3 groups from R7; ( alkylthio ) carbonyl ; ( haloalkylthio) carbonyl ; ( alkoxyalkylthio ) carbonyl ; (cyanoalkylthio ) carbonyl ; (benzylthio ) carbonyl ; ( furfurylthio ) carbonyl ; ( tetrahydrofurfurylthio ) carbonyl ; (thienylmethylthio ) -carbonyl; (pyridylmethylthio) carbonyl; or arylsulphonyl radical or - a carbamoyl radical, optionally mono- o disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing 2 to 6 carbon atoms or - a phenyl, optionally substituted by 1 to 3 R7 groups; - a sulphamoyl group, optionally mono- or disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing 2 to 6 carbon atoms or - a phenyl, optionally substituted by 1 to 3 R7 groups ; - an alkylthioalkylsulphonyl group containing 3 to 8 carbon atoms or a cycloalkylsulphonyl group containing 3 to 7 carbon atoms; - R6 represents: - a hydrogen atom or - a cyano group or - an alkyl group containing 1 to 6 carbon atoms or a cycloalkyl group containing 3 to 7 carbon atoms or - an acyl or alkoxycarbonyl group containing 2 to 6 carbon atoms or - a benzoyl group, optionally substituted by 1 to 3 R7 groups; r - R7 represents: - a halogen atom or - an alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio or alkylsulphonyl radical containing 1 to 6 carbon atoms or - a cycloalkyl, halocycloalkyl, alkenyloxy, alkynyloxy, alkenylthio or alkynylthio radical containing 3 to 6 carbon atoms or - a nitro or cyano group or - an amino radical, optionally mono- or disubstituted by an alkyl or acyl radical containing 1 to 6 carbon atoms or an alkoxycarbonyl radical containing 2 to 6 carbon atoms - a phenyl, phenoxy or pyridyloxy radical, these radicals optionally being .substituted; -and their salts ; 7a with the exception of the compounds for which, when Rx and R2 are simultaneously phenyl or simultaneously methyl, B is CRSRS, A is sulphur and is 0 or S; with the exception of the 3 compounds with Rx = hydrogen, n = 1, B = NR5, with R5 and R<, = methyl, AR3 = SCH3, W = 0 and R2 being either a hydrogen, a methyl or a phenyl; also with the exception of the compound in which Rx is a phenyl, R2, R3 and Rfc are methyl, n is equal to zero, and A and are both sulphur atoms.
Certain specific compounds of the formula I, of formula la, are known in which W, ¾ to R5 and n have the same 8 meaning as in formula I .
Denoted S-alkylated derivatives of 5 ,5-diphenyl-2-thiohydantoin and of 5 , 5-diphenyldithio-hydantoin, they have been especially studied for their pharmacological properties : a) Zejc, A., Dissertationes Pharmaceuticae et pharmacologicae, Warsaw, 20 (5), 507-524 and 525-537 (1968) b) Lucka-Sobstel, B. and Zejc, A., Dissertationes Pharmaceuticae et pharmacologicae, 22 (1), 13-19 (1970) c) Fetter, J., Harsanyi, K. , Nyitrai, J. and Lempert, . , Acta Chemica (Budapest), 78. (3), 325-333 (1973) .
No agricultural fungicidal activity has been described for these compounds .
Other specific compounds of formula I have been described by Bohme, Martin and Strahl in Archiv der Pharmazie, 313. 10-15 (1980) (ref. d) . They are the 3 following compounds: CH3 , phenyl These compounds are thus included in the compounds of formula lb, which form part of the invention: in which W and Rx to R5 have the same meaning as in formula I.
The compounds of formula la can be prepared according to the processes known per se described in the abovementioned references and in the following references : e) Biltz, H., Chemische Berichte 42, 1792-1801 (1909) f) Chattelain, M. and Cabrier, P., Bulletin de la Soci6t6 Chimique de France, 14 (1947), 639-642 g) Carrington, C.H. and Warring, W.S., Journal of the Chemical Society, (1950) 354-365 h) Lampert , K . , Breuer, J . and Lemper-Streter, M. , Chemische Berichte, 92., 235-239 (1959) i) Shalaby, A. and Daboun, H.A., Journal fur Praktische Chemie, 313 (6), 1031-1038 (1971) j) Simig, G., Lemper, K. and Tamas, J., Tetrahedron, 29. (22), 3571-3578 (1973) k) Schmidt, U., Heimgartner, H. and Schmidt, H. , Helvetica Chemica Acta, 62 (1979), 160-170 1) Muraoka, M. , Journal of the Chemical Society, Perkin Transactions I, (1990), 3003-3007 10 or according to one of the processes A, B, C or D described below.
The compounds of formula lb can be obtained according to the process described by Bohme, Martin and Strahl in Archiv der Pharmazie, 313, 10-15 (1980) (reference d) or according to one of the processes described below.
Process A; Process for the preparation of the compounds of formula (I).
The preparation of the compounds of formula (I) by S-alkylation of the 2-thiohydantoins (II) is carried out according to the reaction scheme: T ' in which X represents a chlorine, bromine or iodine atom or a sulphate group, or an alkylsulphonyloxy or arylsulphonyloxy group, alkyl and aryl being as defined above for Rx and R2. It is possible to use, as base, an alkoxide, for example potassium tert-butoxide, an alkali metal or alkaline-earth metal hydroxide, an alkali metal carbonate or a tertiary amine. It is possible to use, as solvent, ethers, cyclic ethers, alkyl esters, acetonitrile, alcohols containing 1 to 3 carbon atoms, or aromatic solvents, for example tetrahydrofuran, at a temperature of between -5eC and +80 °C.
This process is suitable for the compounds in which W represents a sulphur or oxygen atom.
The 2-thiohydantoins of formula (II) can be obtained according to the processes described in the literature such as, for example, in the following references : e) Biltz, H., Chemische Berichte, 42, 1792-1801 (1909) n) Eberly and Dains, Journal of the American Chemical Society, 58, (1936), 2544-2547 0) Carrington, C.H., Journal of the Chemical Society, (1947), 681-686 g) Carrington, C.H. and Warring, W.S., Journal of the Chemical Society, (1950), 354-365 h) Lampert, K. , Breuer, J. and Lemper-Streter, M. , Chemische Berichte, 92, 235-239 (1959) 1) Koltai, E., Nyitrai, J., Lempert, K. and Buries, L. , Chemische Berichte, 104 , 290-300 (1971) or alternatively according to one of processes E or F described below and which form part of the invention.
Process B: Preparation of the compounds Ic.
The preparation of the 2-methylthio-2-imidazolin-5-ones of formula (Ic) by cyclisation of the iminodithiocarbonates of formula (V) is carried out 12 according to the overall scheme: a) The iminodithiocarbonates (III) can be prepared by carrying out the preparation according to the conditions described in the literature for analogous compounds : - C. Alvarez Ibarra et al., Tetrahedron Letters, 26 (2), 243-246 (1985) - E. Melendez et al., Synthesis, 1981, 961 according to: b) The compounds of formula (V) are obtained 13 by condensing the compounds of formula (III) with amines or hydrazines of formula (IV). To carry out the condensation, the acid (III) must be activated in the acid chloride form, in the dicyclohexylisourea form using dicyclohexylcarbodiimide or in the imidazolide form using carbonyldiimidazole . Condensation is carried out under the usual conditions for this type of reaction. c) Cyclisation of the compounds (V) is carried out by simple heating in an aromatic solvent at reflux. It is possible to use, as solvent, especially xylene, chlorobenzene or dichlorobenzene .
Process C; Derivatisation of the compounds (lb' ) and (Id' ) .
Process Clt Preparation of the compounds lb by N-derivatisation of the compounds lb'.
The compounds of formula (lb') (compounds (lb) in which Rs is a hydrogen atom) can be alkylated, acylated, alkoxycarbonylated, carbamoylated or sulphamoylated according to the following general scheme : represents here an alkyl, alkoxycarbonyl, 14 acyl, arylcarbonyl, alkylsulphonyl/ arylsulphonyl, carbamoyl or sulphamoyl group, such as defined above.
X represents a halogen, a sulphate group or an optionally substituted phenoxy, or an alkylsulphonyl-oxy or arylsulphonyloxy group, or a group R50, when R5 is acyl.
It is possible to use, as base, alkali metal hydrides, alkoxides or a tertiary amine. The reaction can be carried out at a temperature of between -30 "C and +50 °C. It is possible to use, as solvent, for example ethers, cyclic ethers, dimethylformamide, dimethyl sulphoxide or aromatic solvents .
Carbamoylation of the compounds (lb') can be carried out by reacting with isocyanates or isothiocyanates according to the scheme: The reaction is carried out under the same conditons as those described above, it being possible for the base, however, to be used in catalytic quantity.
Process C2; Preparation of the compounds Id.
The compounds Id' (compounds Id in which R2 a hydrogen atom, can be alkylated in position 4 according to the scheme: 15 X represents a chlorine, bromine or iodine atom. It is possible to use, as base, an alkoxide, a metal hydride or an amide. The reaction can be carried out at a temperature of between -30 °C and +80 °C. It is possible to use, as solvent, ethers, cyclic ethers, dimethylformamide, dimethyl sulphoxide or aromatic solvents .
Process D; Preparation of the S-oxidised derivatives of the 2-imidazoline-5-thiones .
The compounds of formula (I) in which W represents a S=0 group are obtained by oxidising the 2-imidazoline-5-thiones according to the scheme: It is possible to use peroxides, especially peracids, as oxidising agent. The oxidising agent must be used in a stoichiometric quantity. Oxidation is carried out in chloroform or in methylene chloride at a 16 temperature of between -20 °C and +20 eC.
Process E; Preparation of the dithiohydantoins of formula (VI).
The dithiohydantoins of formula (VI) can obtained by trapping the alpha anions of the isothiocyanates with isothiocyanates which cannot anions according to the scheme: At least one of the groups Rx or R2 must be electron-withdrawing (aryl, substituted aryl, alkoxy- carbonyl, and the like) . The isothiocyanate R-NCS must not be able to form an anion; aryl isothiocyanates can be used in particular in this reaction.
It is possible to use, as base, potassium tert-butoxide, lithium or sodium bis (trimethylsilyl)- amide or alkali metal hydrides. It is possible to use ethers or cyclic ethers as solvent. The reaction is carried out at a temperature below -60 °C. The anion must be trapped as it is formed. To achieve this, the mixture of the 2 isothiocyanates is run onto the base in solution at a temperature below -60°C.
Process F; Preparation of the 2-thiohydantoins of formula (VII). 17 The preparation of the 2-thiohydantoins (VII) from the isothiocyanates derived from the amino acids (VIII) is carried out according to the reaction: Cyclisation can be carried out in two ways: - thermally: in this case, the mixture of the reactants is heated at a temperature of between 110 °C and 180 °C in an aromatic solvent such as toluene, xylene or the chlorobenzenes ; - in basic medium: the cyclisation is carried out in the presence of one equivalent' of a base such as an alkali metal alkoxide, an alkali metal hydroxide or a tertiary amine. Under these conditions, cyclisation takes place at a temperature of between -10 and +80 °C. It is possible to use ethers, cyclic ethers, alcohols, esters, DMF, DMSO and the like as solvent.
The isothiocyanates can be prepared according to one of the processes mentioned in Sulfur Reports, Volume 8 (5), pages 327-375 (1989).
Process G: Preparation of the compounds of formula I in a single stage.
During cyclisation of the 2-thiohydantoins according to process F, if the cyclisation is carried 18 out in basic medium, the thiohydantoin is in the thiolate form at the end of the reaction and can be reacted directly with an alkyl halide or alkyl sulphate R3X or with R3X in which X is an alkylsulphonyloxy or aryl-sulphonyloxy to form (I). Processes A and F are thus linked together according to the scheme: (D Process H; Preparation of the compounds of formula Ie, in which (B)n is a sulphur atom.
These compounds can be obtained by reacting a sulphuryl chloride RSC1 with an imidazolinone of formula IX according to the scheme: 19 The reaction is carried out at a temperature pf between -20°C and +30°C, in the presence of one molar equivalent of a base. As solvent, it is possible to use alkali metal hydrides, alkali metal alkoxides or tertiary amines as base. As solvent, it is possible to use polar solvents, for example ethers, cyclic ethers, dimethylformamide, dimethyl sulphoxide or aromatic solvents. The imidazolinones (IX) can be prepared by processes analogous to process A.
The compounds which are preferred for their better fungicidal activity and/or for their ease of synthesis are: 1) the compounds of formula lb, 2) the compounds of formula I, in particular lb, in which R5 is a hydrogen atom, 3 ) the compounds in which Rx and R2 are different from H, 4) the compounds in which R2 represents an alkyl group containing 1 to 3 carbon atoms, 5) the compounds in which Rx represents a phenyl ring, optionally substituted by R7, 6) the compounds in which R3 represents an alkyl group containing 1 to 3 carbon atoms , 7 ) the compounds in which R< represents a phenyl ring, optionally substituted by R7, 8) the compounds in which R3 represents a methyl group .
The examples below are given by way of illustration of the compounds according to the invention, of the processes for their preparation and of their antifungal properties.
The structures of all the products were established by at least 1 of the following spectral techniques: proton NMR spectrometry, carbon-13 NMR spectrometry, infrared spectrometry and mass spectrometry .
In the tables below, the methyl and phenyl radicals are represented respectively by Me and Ph, and Cst means a physical constant, that is to say either a melting point (M.p.) or the refractive index (njj0) .
Example 1; Preparation of compound No. 34 according to process A. 0.9 g (3 mmol) of 3-benzyl-5-methyl-5-phenyl-2-thiohydantoin is dissolved in 30 ml of anhydrous tetrahydrofuran. The mixture is cooled to 0°C and then 0.34 g (3 mmol) of potassium tert-butoxide is added. The mixture is left to react for 10 min at 0°C and then 0.46 g (3.3 mmol) of methyl iodide is run in dropwise at this temperature: potassium iodide is observed -to precipitate. The temperature of the mixture is allowed to return to room temperature. The mixture is diluted with 100 ml of ethyl acetate. The solution is washed 2 times with 100 ml of water on each occasion. The solution is dried over sodium sulphate and is then treated with active charcoal. The solution is concentrated under reduced pressure: 0.6 g of l-benzyl-4-methyl-2-methylthio--4-phenyl-2-imidazolin-5-pne (compound No. 34) is recovered in the . form of a pale-yellow solid melting at 68 °C.
The compounds described below were prepared in the same way: 22 23 24 25 The following were also prepared: - 4-(3-pyridyl)-4-methyl-l-(N-phenylamino)-2-methylthio-2-imidazolin-5-one (compound 51: M.p. 156°C) ; - 4-phenyl-4-methyl-l-(benzyloxy)-2-methylthio-2-imidazolin-5-one (compound 56: honey-like consistency) .
Example 2 : Preparation of compound No. 7 according to process B. a) N-[bis (methylthio)methylene]-2-phenyl-glycine (compound (III) with Rj = phenyl and R2 = H) : 100 g (0.66 mol) of phenylglycine are dissolved at +5°C in 335 g of 22 % aqueous potassium hydroxide (1.3 mol). 55.3 g of carbon disulphide are added while stirring the mixture vigorously: a precipitate appears and the mixture turns orange in colour. The mixture is left to react for 3 h at room temperature and then 103 g (0.73 mol) of methyl iodide are run in while keeping the temperature of the mixture below 30 °C. The mixture is left to react for 0.5 h and then 74 g (0.66 mol) of a 50 % potassium hydroxide solution are added. The mixture is left to react for 0.5 h and then 103 g of methyl iodide are again run in and left to react for 1 h. The mixture is diluted with 300 ml of water. The mixture is acidified to pH = 4 with IN hydrochloric acid. The product is extracted with 500 ml of ethyl acetate. The solution is dried over magnesium sulphate and then concentrated under 26 reduced pressure. 49.5 g of N-[bis (methylthio) -methylene]-2-phenylglycine (yield = 31 %) are recovered in the form of a yellow solid melting at 112 °C. b) 2 ' -(metachlorophenyl) [N-(bis (methylthio) — methylene) -2-phenylglycyl]hydrazide (compound V with Rt = phenyl, R2 = H, R«, = metachlorophenyl, n = 1, B = NH) : 3.38 g (16.4 mmol) of dicyclohexylcarbo-diimide are added to a solution of 2.95 g (16.4 mmol) of N-[bis (methylthio)methylene]-2-phenylglycine in methylene chloride (40 ml), and the mixture is then left to react for 0.5 h at room temperature. 2.34 g (16.4 mmol) of metachlorophenylhydrazine are added. The mixture is heated for 0.5 h at 30"C. The insoluble material is filtered off. The filtrate is washed with 2 times 30 ml of water on each occasion. The solution is concentrated: a honey-like product is obtained which is purified by chromatography on a silica column. After purification, 2.5 g of 2 ' -(metachlorophenyl) [N-(bis (methylthio)methylene) -2-phenylglycyl]hydrazide are recovered in the form of a pinkish powder melting at 146'C. c) l-metachlorophenylamino-2-methylthio-4-phenyl-2-imidazolin-5-one (compound No. 7): 1.92 g (5 mmol) of 2 '-(metachlorophenyl) [N-(bis (methylthio)methylene)-2-phenylglycyl]hydrazide is dissolved in 30 ml of xylene. The reaction mixture is heated for 4 h at reflux. The mixture is concentrated under reduced pressure. The resulting honey-like product is triturated with 10 ml of ether: the product crystallises. The precipitate is filtered and the product is dried in a desiccator under vacuum. Compound No. 7 is thus obtained, with a yield of 56 %, in the form of a yellow powder melting at 196 °C.
By carrying out the preparation in a similar way, the compounds which appear in the following table were prepared: 28 No . R2 R3 R4 R5 W Cst 4-Phenyl-l- (N-phenylamino ) -2-methylthio-2-imidazolin-5-one (compound 120) was also prepared.
Example 3; Preparation of 4-methyl-l-(N-methyl-N-phenylamino ) -2-methylthio-4-phenyl-2-imidazolin-5-one (compound No. 22) by alk 1ation (methylation) according to process CI. 0.4 g (3.5 mmol) of potassium tert-butoxide is added to a solution of 4-methyl-l-phenylamino-2- methylthio-4-phenyl-2-imidazolin-5-one (compound No. 9) (1 g, 3.2 mmol) in anhydrous tetrahydrofuran (30 ml), cooled beforehand to 0°C. The mixture is left to react for 0.5 h at 0°C. 0.5 g (3.5 mmol) of methyl iodide is then added and then the mixture is left to react for 0.5 h at room temperature. The reaction mixture is poured into 100 ml of water and the product is extracted with 100 ml of diethyl ether. The ethereal solution is dried over magnesium sulphate and then concentrated. The product crystallises when triturated in 10 ml of diisopropyl ether. It is filtered and then dried under vacuum. 0.73 g (yield: 70 %) of compound 22 is thus obtained in the form of a pale-yellow powder melting at 12 °C.
Example 4 ; Preparation of 4-methyl-l- (N-acetyl-N-phenylamino) -2-methylthio-4-phenyl-2-imidazolin-5-one (compound No. 23) by acylation (acetylation) according to process CI. 0.4 g (3.5 mmol) of potassium tert-butoxide is added to a solution of 4-methyl-l-phenylamino-2-methylthio-4-phenyl-2-imidazolin-5-one (compound No. 9) (1 g, 3.2 mmol) in anhydrous tetrahydrofuran (30 ml), cooled beforehand to 0°C. The mixture is left to react for 0.5 h at 0°C. 0.25 g (3.5 mmol) of acetyl chloride is then added and the mixture is left to react for 0.5 h at room temperature. The reaction mixture is poured into 100 ml of water and the product is extracted with 100 ml of diethyl ether. The ethereal 30 solution is washed with water to neutrality. The .solution is dried over magnesium sulphate and then concentrated. A honey-like product is obtained which is purified by chromatography on a silica column. The purified product crystallises from diisopropyl ether. 0.25 g of compound No. 23 is obtained in the form of a white powder melting at 132 °C.
By carrying out the preparation in the same way, compounds No. 39 and 42 were obtained.
No. R2 R3 R5 W Cst 23 Me Me Ph acetyl 0 M.p.= 132eC 39 Me Me Ph formyl 0 "honey-like consistency" 42 Me Me Ph tBuOCO 0 "honey-like consistency" Example 5: Preparation of 4-ethyl-2-methylthio-4-phenyl-l-phenylamino-2-imidazolin-5-one (compound 48) according to process C2. 0.55 g of potassium tert-butoxide is added to a solution of 1.5 g (5.05 mmol) of 2-methylthio-4-phenyl-l-phenylamino-2-imidazolin-5-one (compound No. 5) in 50 ml of anhydrous tetrahydrofuran. The mixture is left to react for 30 min at room temperature and then 0.8 g (5.05 mmol) of ethyl iodide is added. The mixture is left to react for 1 h at room temperature. The mixture is diluted with 150 ml of ethyl acetate. The solution is washed with water and then concentrated under reduced pressure. The product is purified by chromatography on a silica column (Merck 60H silica; eluent: 25 % ethyl acetate/75 % heptane) . 0.65 g of compound No. 48 is obtained in the form of a beige powder melting at 147 °C.
By carrying out the preparation in the same way, compound No. 49 was obtained. 32 4-Methyl-2-methylthio-4- ( 4-fluorophenyl ) -1-phenylamino-2-imidazolin-5-one (compound 68) wa∑> also prepared .
Example 61 Preparation of compound 2 according to process D. 1.7 g (5.2 mmol) of 4-methyl-2-methylthio-4-phenyl-l-phenylamino-2-imidazoline-5-thione (compound No. 1) is dissolved in 20 ml of chloroform. The solution is cooled to -10 °C and then a solution of 1.35 g (5.5 mmol) of metachloroperbenzoic acid and 30 ml of chloroform is added over 10 min. On completion of addition, the temperature is allowed to return to room temperature. The mixture is washed with a saturated aqueous sodium bicarbonate solution and then with distilled water. The organic phase is treated with active charcoal and then concentrated. The resulting honey-like product is taken up in 20 ml of ether: the product dissolves and then a beige solid precipitates. The precipitate is filtered. The product is dried under reduced pressure. 0.4 g (yield: 25 %) of compound No. 2 is thus obtained in the form of a beige powder melting at 150°C.
Example 7 : Preparation of 3,5-diphenyl-5-methyldithiohydantoin according to process E. 15.1 g (122 mmol) of potassium tert-butoxide are dissolved in 200 ml of tetrahydrofuran in a 500 ml, three-necked, round-bottomed flask under a dry argon 34 atmosphere. The solution is cooled to -70°C. A solution containing 20 g ( 122 mmol) of alpha-methylbenzyl isothiocyanate, 16 . 55 g ( 122 mmol) of phenyl isothiocyanate and 50 ml of tetrahydrofuran is run in dropwise while keeping the temperature of the mixture below -60 °C. On completion of addition, the mixture is held for 0 . 5 h at -70 °C and then is left to return to room temperature. The mixture is poured into 500 ml of water. The mixture is acidified to pH = 1 by addition of N hydrochloric acid. The product is extracted with ethyl acetate ( 2 extractions, each with 150 ml of solvent) . The solution is dried over magnesium sulphate. The solution is concentrated under reduced pressure. The product is crystallised from 50 ml of ether. The precipitate is filtered. 21 g (yield: 58 % ) of 3 , 5-diphenyl-5-methyldithiohydantoin are thus obtained, a yellow powder melting at 157 °C.
Example 8 : Preparation of 3 , 5-diphenyl-5-methyl-2-thiohydantoin according to process F. 4 . 7 g ( 20 mmol) of ethyl 2-isothiocyanato-2-phenylpropionate are dissolved in 40 ml of xylene. 2 . 16 g ( 20 mmol) of phenylhydrazine are added and the mixture is heated for 4 h at reflux. The mixture is cooled to room temperature and a beige solid precipitates. The precipitate is filtered, washed with 5 ml of diisopropyl ether and then dried under vacuum. 4 . 6 g (yield = 77 %) of 3 , 5-diphenyl-r5-methyl-2-thio-hydantoin are thus obtained in the form of a beige 35 powder melting at 164 °C.
Example 9 ; Preparation of 5-methy1-5-phenyl-3- ( 2-pyridylamino) -2-thiohydantoin according to process F. 2 g (9 mmol) of methyl 2-isothiocyanato-2-phenylpropionate are dissolved in 30 ml of tetrahydro-furan. A solution containing 0.99 g of 2-hydrazino-pyridine and 10 ml of tetrahydrofur n is added: the temperature of the mixture rises from 20 to 30 "C and a solid precipitates. The mixture is allowed to react for 0.5 h at 30 °C and then is cooled to 5°C. A solution containing 1 g of potassium tert-butoxide and 10 ml of tetrahydrofuran is then added: the mixture becomes violet in colour. The mixture is left to return to room temperature and is left to react for 2 h. The mixture is poured into 150 ml of water. The mixture is neutralised with acetic acid. The product is extracted with 150 ml of ethyl acetate. The solution is washed with water, dried oyer magnesium sulphate and then treated with active charcoal. The solution is concentrated and the product is crystallised from 20 ml of diethyl ether. The abovementioned product is filtered and is dried under vacuum. 1.6 g (yield: 60 %) of 5-methyl-5-phenyl-3- ( 2-pyridylamino ) -2-thiohydantoin is obtained, a pale-yellow solid melting at 80 °C.
The compounds of formula (VII) collated in the following table, which are intermediates of the compounds of formula I and are numbered from number 1001, were prepared according to this process: Ri = methyl and R2 = phenyl. 37 Example 10; Preparation of compound 9 according to process G. 11.1 g (50 mmol) of methyl 2-isothiocyanato-2-phenylpropionate are dissolved in 150 ml of anhydrous tetrahydrofuran. A solution containing 5.4 g (50 mmol) of phenylhydrazine and 50 ml of anhydrous tetrahydrofuran is added progressively over 10 min: the temperature of the mixture rises to 35 eC. On completion of addition, the mixture is left to react for 0.5 h at 30 °C and the mixture is then cooled to -5°C. A solution containing 5.6 g (50 mmol) of potassium tert-butoxide and 50 ml of anhydrous tetrahydrofuran is added at this temperature: the mixture turns violet in colour and then a precipitate forms. The mixture is left to react for 0.5 h at 0eC and then 8.5 g (60 mmol) of methyl iodide are added. The mixture is left to react for 1 h at room temperature. The mixture is diluted with 200 ml of ethyl acetate. The mixture is washed 2 times with 150 ml of water on each occasion. The solution is dried over magnesium sulphate and then treated with active charcoal. The solution is concentrated: a purplish-brown honey-like product is obtained which is crystallised from 50 ml of ether. The precipitate is washed and then dried under vacuum. A second crop of product is recovered after concentrating the mother liquors and taking up the residual honey-like product in 50 ml of diisopropyl ether. 12 g (yield = 77 %) of 4-methyl-2-methylthio-4-phenyl-l-phenylamino-2- 38 imidazolin-5-one (compound 9) are thus obtained in the form of a beige powder melting at 149 eC.
By carrying out the preparations as above, the following compounds were obtained: 39 40 40a compound 92 compound 97 compound 98 compound compound 113 Example 11; Preparation of 4-phenyl-4-methyl-l-(phenylthio) -2-methylthio-2-imidazolin-5-one (compound 95: M.p. 112°C). 0.6 g (2.7 mmol) of 2-methylthio-4-methyl-4-phenyl-2-imidazolin-5-one in solution in 50 ml of anhydrous tetrahydrofuran (THF) is charged to a 100 ml, three-necked, round-bottomed flask under an inert atmosphere. The solution is stirred with a magnetic stirrer and is cooled to 0°C (ice bath + acetone). 0.30 g (1 molar equivalent) of potassium tert-butoxide is added and the mixture is stirred for 10 min at 0°C. A' solution containing 0.40 g of phenylsulphenyl chloride and 10 ml of anhydrous THF is then run in. The mixture is then left to return to room temperature for one hour. The reaction mixture is run into 100 ml of water. Extraction is carried out with 100 ml of ethyl acetate. The organic phase is washed 4 times with water and dried over sodium sulphate.
The organic phase is concentrated under vacuum. A yellow honey-like product is obtained which crystallises from isopropyl ether after purification on silica with a yield of 68% (melting point: 112°C).
Example 12: In vitro test: The action of the compounds according to the invention is studied on the following fungi responsible for diseases of cereals and other plants: Fusarium oxysporum f.sp.melonis Rhizoctonia solani AG4 42 Helminthosporium gramineum Pseudocercosporella herpotrichoides Alternaria alternata Septoria nodorum Fusarium roseum Pythium rostratum Pvthium vexans Each test is carried out in the following way: a nutrient medium consisting of potato, glucose and gelose (PDA medium) is introduced in the supercooled state into a series of Petri dishes (100 ml per dish) after sterilisation in an autoclave at 120°C.
While filling the dishes, an acetone solution of the active material is injected into the supercooled medium to obtain the desired final concentration.
The controls consist of Petri dishes analogous to the above which have been charged with similar quantities of a nutrient medium which does not contain active material.
After 24 hours, each dish is cultured by depositing a fragment of ground mycelium arising from a previous culture of the same fungus.
The dishes are stored for 5 days at 20 °C and the growth of the fungus in the dishes containing the active material to be tested is then compared with that of the same fungus in the dish used as the control.
For each compound tested, the degree of inhibition of the fungus studied is thus determined for a dose of 20 ppni.
The following results are then obtained: A good activity, that is to say a degree of inhibition of the fungus of between 80 % and 100 %, was found for: - Compounds 9, 13, 16, 22, 26 and 34 for Pythium rostratum and Pvthium vexans .
- Compound 26 for Fusarium oxysporum and Fusarium roseum.
- Compounds 11, 16, 22 and 26 for Alternaria alternata .
- Compounds 11, 16 and 26 for Rhizoctonia solani .
- Compounds 16 and 26 for Pseudocercosporella herpotrichoides .
- Compounds 11, 16 and 26 for Septoria nodorum.
- Compounds 9, 11, 16 and 26 for Helminthosporium gramineum.
Example 13: In vivo test on Plasmopara vicicola (grape downy mildew): An aqueous suspension of the active material to be tested is prepared, by fine milling, having the following composition: - active material: 60 mg - Tween 80 surface-active agent (oleate of polyoxyethylenated derivative of sorbitan) diluted to 10 % in water: 0.3 ml 44 - volume made up to 60 ml with water.
This aqueous suspension is then diluted with water to produce the desired concentration of active material .
Vine cuttings (Vitis vinifera) , Chardonnay variety, are grown in pots . When these plants are 2 months old (8-10-leaf stage, height of 10 to 15 cm), they are treated by spraying with the above aqueous suspension.
Plants used as controls are treated with an aqueous solution which does not contain the active material .
After drying for 24 hours, each plant is infected, by spraying, with an aqueous suspension of spores of Plasmopara viticola obtained from a 4-5 day culture, and then suspended at a concentration of 100,000 units per cm3.
The infected plants are then incubated for two days at approximately 18 °C in an atmosphere saturated with moisture and then for 5 days at approximately 20-22 °C under 90-100 % relative humidity.
Reading is carried out 7 days after infecting, by comparison with the control plants.
Under these conditions, a good (at least 75 %) or complete protection is observed, at a dose of 1 g/1, with the following compounds: 1, 2, 9, 10, 12, 13, 15, 16, 18, 20, 22, 23, 24, 25, 30, 31, 34, 35, 37, 39 to 43, 45, 48, 55 to 58, 60, 62, 64, 68, 73, 75, 76, 83 to 85, 88 to 91, 93 to 98, 101 to 108.
Example 14; In vivo test on Puccinia recondita (brown rust of wheat) : An aqueous suspension of the active material to be tested is prepared, by fine milling, having the following composition: - active material: 60 mg - Tween 80 surface-active agent (oleate of polyoxyethylenated derivative of sorbitan) diluted to 10 % in water: 0.3 ml - volume made up to 60 ml with water.
This aqueous suspension is then diluted with water to produce the desired concentration of active material .
Wheat, in pots, sown on a 50/50 peat/pozzolana earth substrate, is treated at the 10 cm high stage by spraying the above aqueous suspension.
After 24 hours, an aqueous suspension of spores (100,000 sp/cm3) is sprayed on the wheat; this suspension was obtained from infected plants. The wheat is then placed for 24 hours in an incubation cell at approximately 20 °C and at 100 % relative humidity, and then for 7 to 14 days at 60 % relative humidity.
Monitoring of the condition of the plants is carried out between the 8th and 15th day after infection, by comparison with an untreated control.
Under these conditions, a good (at least 75 %) or complete protection is observed, at a dose of 1 g/1, with the following compounds: 2, 9, 10, 15, 18, 20 to 22 and 39, 55, 57, 64, 68, 75, 83 to 85, 88 to 90, 93, 94 and 98.
Example 15; In vivo test on Phytophthora infestans (tomato late blight): An aqueous suspension of the active material to be tested is prepared, by fine milling, having the following composition: - active material: 60 mg - ween 80 surf ce-active agent (oleate of polyoxyethylenated derivative of sorbitan) diluted to 10 % in water: 0.3 ml - volume made up to 60 ml with water.
This aqueous suspension is then diluted with, water to produce the desired concentration of active material .
Tomato plants (Marmande variety) are grown in pots. When these plants are one month old (5 to 6-leaf stage, 12 to 15 cm high), they are treated by spraying the above aqueous suspension at various concentrations of the compound to be tested.
After 24 hours, each plant is infected by spraying with an aqueous suspension of spores (30,000 sp/cm3) of Phytophthora infestans.
After this infecting, the tomato plants are incubated for 7 days at approximately 20 °C in an atmosphere saturated with moisture.
Seven days after infecting, the results obtained in the case of the plants treated with the active material to be tested are compared with those obtained in the case of the plants used as controls . Under these conditions, a good (at least 75 %) or complete protection is observed, at a dose of 1 g/1, with the following compounds: 2, 9, 15, 30, 39, 45, 55, 68, 75, 84, 85, 90, 94, 98, 107 and 108.
These results clearly show the good fungicidal properties of the derivatives according to the invention against fungal diseases of plants due to fungi belonging to the most diverse families, such as the Phycomycetes , Basidiomycetes, Ascomycetes, Adelomycetes or Fungi Imperfecti, in particular grape downy mildew, tomato late blight and brown rust of wheat .
For their practical use, the compounds according to the invention are rarely used on their own. Most often they form part of compositions. These compositions, which can be used as fungicidal agents, contain, as active material, a compound according to the invention as described above as a mixture with solid or liquid vehicles which are acceptable in agriculture, and surface-active agents which are also acceptable in agriculture. In particular, the customary inert vehicles and the customary surface-active agents can be used. These compositions also form part of the invention .
These compositions can also contain all kinds 48 of other ingredients such as, for example, protective colloids, adhesives, thickening agents, thixotropic agents, penetration agents, stabilising agents, sequestering agents and the like. More generally, the compounds used in the invention can be used in combination with any of the solid or liquid additives which correspond to the usual formulating techniques .
Generally, the compositions according to the invention usually contain from 0.05 to approximately 95 % (by weight) of a compound according to the invention (subsequently called active material), one or more solid or liquid vehicles and, optionally, one or more surface-active agents .
The term "vehicle", in the present account, . means a natural or synthetic, organic or inorganic material with which the compound is combined in order to facilitate its application to the plant, to seeds or to the soil. This vehicle is therefore generally inert and it has to be acceptable in agriculture, especially to the treated plant. The vehicle can be solid (clays, natural or synthetic silicates, silica, resins, waxes, solid fertilisers, and the like) or liquid (water, alcohols, especially butanol, and the like) .
The surface-active agent can be an emulsifying, dispersing or wetting agent of ionic or nonionic type or a mixture of such surface-active agents. There may be cited, for example, salts of poly(acrylic acids), salts of lignosulphonic acids, salts of phenolsulphonic or naphthalenesulphonic acids, polycondensates of ethylene oxide with fatty alcohols or fatty acids or fatty amines, substituted phenols (especially alkylphenols or arylphenols ) , salts of esters of sulphosuccinic acids, derivatives of taurine (especially alkyltaurates ) , phosphoric esters of polyoxyethylenated alcohols or phenols, esters of fatty acids and of polyols, and the derivatives of the above compounds having a sulphate, sulphonate or phosphate functional group. The presence of at least one surface-active agent is generally indispensable where the compound and/or the inert vehicle are not soluble in water and where the vector agent of the application is water .
Thus, the compositions for agricultural use according to the invention can contain the active materials according to the invention within very wide limits, ranging from 0.05 % to 95 % (by weight). Their surface-active agent content is advantageously between 5 % and 40 % by weight.
These compositions according to the invention are themselves in fairly diverse, solid or liquid forms .
There may be mentioned, as solid composition forms, powders for dusting (containing the compound at a content of up to 100 %) and granules, especially those obtained by extrusion, by compacting, by impregnation of a granulated vehicle, or by granulation 50 from a powder (the content of the compound in these granules being between 0.5 and 80 % for the latter cases), tablets or effervescent tablets.
The compounds of formula (I) can also be used in the form of powders for dusting; it is also possible to use a composition comprising 50 g of active material and 950 g of talc; it is also possible to use a composition comprising 20 g of active material, 10 g of finely divided silica and 970 g of talc; these constituents are mixed and milled and the mixture is applied by dusting.
As composition forms which are liquid or intended to constitute liquid compositions during application, there may be mentioned solutions, in particular water-soluble concentrates, emulsifiable concentrates, emulsions, suspension concentrates, aerosols, wettable powders (or sprayable powder), pastes or gels .
The emulsifiable or soluble concentrates most often comprise 10 to 80 % of active material, while the ready-to-apply solutions or emulsions contain 0.001 to 20 % of active material.
In addition to the solvent, the emulsifiable concentrates can contain, when this is necessary, 2 to 20 % of suitable additives such as the stabilising agents, surface-active agents, penetration agents, corrosion inhibitors, dyes or adhesives mentioned above . 51 It is possible, by diluting these concentrates with water, to obtain emulsions of any desired concentration which are particularly suitable for application to crops .
By way of example, the composition of several emulsfiable concentrates will now be given: EC Example 1 - active material 400 g/1 - alkaline dodecylbenzenesulphonate 24 g/1 - oxyethylenated nonylphenol containing 10 molecules of ethylene oxide 16 g/1 - cyclohexanone 200 g/1 - aromatic solvent qs 1 litre According to another emulsifiable concentrate formula, there are used: EC Example 2 - active material 250 g - epoxidised vegetable oil 25 g - mixture of alkylarylsulphonate and of ether of polyglycol and fatty alcohols 100 g - dimethylformamide 50 g - xylene 575 g The suspension concentrates, which can also be applied by spraying, are prepared so as to produce a stable fluid product which does not settle out* and they generally contain from 10 to 75 % of active material, from 0.5 to 15 % of surface-active agents, from 0.1 to 10 % of thixotropic agents, from 0 to 10 % of suitable 52 additives, such as antifoaming agents, corrosion inhibitors, stabilising agents, penetration agents and adhesives and, as vehicle, water or an organic liquid in which the active material has little or no solubility: certain solid organic materials or inorganic salts can be dissolved in the vehicle to help in preventing sedimentation or as antifreeze for the water .
By way of example, the composition of a suspension concentrate will now be given: SC Example 1 - active material 500 g - polyethoxylated tristyrylphenyl phosphate 50 g - polyethoxylated alkylphenol 50 g - sodium polycarboxylate 20 g - ethylene glycol 50 g - organopolysiloxane oil (antifoam) 1 g - polysaccharide 1.5 g - water 316.5 g The wettable powders (or sprayable powders) are generally prepared so that they contain 20 to 95 % of active material, and they generally contain, in addition to the solid vehicle, from 0 to 30 % of a wetting agent, from 3 to 20 % of a dispersing agent and, when necessary, from 0.1 to 10 % of one or more stabilising agents and/or other additives, such as penetration agents, adhesives, or anticaking agents, dyes, and the like. 53 In order to obtain the sprayable powders or wettable powders , the active materials are intimately mixed in suitable mixers with the additional substances and the mixture is milled in mills or other suitable grinders. Sprayable powders are thereby obtained whose wettability and suspensibility are advantageous; they can be suspended in water at any desired concentration and these suspensions can be used very advantageously in particular for application to plant leaves.
Instead of wettable powders, it is possible to produce pastes . The conditions and methods for producing and using these pastes are similar to those for the wettable powders or sprayable powders .
By way of example, various wettable powder (or sprayable powder) compositions will now be given: P Example 1 - active material 50 % - ethoxylated fatty alcohol (wetting agent) 2.5 % - ethoxylated phenylethylphenol (dispersing agent) 5 % - chalk (inert vehicle) 42.5 % 54 WP Example 2 - active material 10 % - C13 branched-type synthetic oxo alcohol ethoxylated with 8 to 10 ol of ethylene oxide (wetting agent) 0.75 % - neutral calcium lignosulphonate (dispersing agent) 12 % - calcium carbonate (inert filler) gs 100 % WP Example 3; This wettable powder contains the same ingredients as in the above example, in the proportions below: - active material 75 % - wetting agent 1.50 % - dispersing agent 8 % - calcium carbonate (inert filler) qs 100 % WP Example 4 ; - active material 90 % - ethoxylated fatty alcohol (wetting agent) 4 % - ethoxylated phenylethylphenol (dispersing agent) 6 % 55 WP Example 5; r active material 50 % - mixture of anionic and nonionic surface-active agents (wetting agent) 2.5 % - sodium lignosulphonate (dispersing agent) 5 % - kaolin clay (inert vehicle) 42.5 % The aqueous dispersions and emulsions, for example the compositions obtained by diluting a wettable powder or an emulsifiable concentrate according to the invention using water, are included within the general scope of the present invention. The emulsions can be of water-in-oil or oil-in-water type and they can have a thick consistency like that of a "mayonnaise " .
The compounds according to the invention can be formulated in the form of water-dispersible granules also included in the scope of the invention.
These dispersible granules, with an apparent density generally of between approximately 0.3 and 0.6, have a particle size generally between approximately 150 and 2,000 and preferably between 300 and 1,500 microns .
The active material content of these granules is generally between approximately 1 % and 90 %, and preferably between 25 % and 90 %.
The remainder of the granule is essentially composed of a solid filler and optionally of 56 surface-active adjuvants which confer water-dispersibility properties on the granule. These granules can be essentially of two distinct types depending upon whether the filler used is soluble or insoluble in water. When the filler is water-soluble, it can be inorganic or, preferably, organic. Excellent results have been obtained with urea. In the case of an insoluble filler, the latter is preferably inorganic, such as, for example, kaolin or bentonite. It is then advantageously accompanied by surface-active agents (at an amount of 2 to 20 % by weight of the granule) of which more than half consists, for example, of at least one essentially anionic dispersing agent such as an alkali metal or alkaline-earth metal polynaphthalene sulphonate or an alkali metal or alkaline-earth metal lignosulphonate, the remainder consisting of nonionic or anionic wetting agents such as an alkali metal or alkaline-earth metal alkylnaphthalene sulphonate.
Moreover, although this is not indispensable, it is possible to add other adjuvants such as anti-foaming agents .
The granule according to the invention can be prepared by mixing the required ingredients and then granulating according to several techniques known per se (pelletiser, fluid bed, atomiser, extrusion, and the like). Generally, the preparation is completed by crushing followed by sieving to the particle size chosen within the abovementioned limits . 57 Preferably, it is obtained by extrusion, the preparation being carried out as shown in the examples below.
DG Example It Dispersible granules 90 % by weight of active material and 10 % of urea in the pearl form are mixed in a mixer. The mixture is then milled in a pin mill. A powder is obtained which is moistened with approximately 8 % by weight of water. The damp powder is extruded in a perforated-cylinder extruder. A granule is obtained which is dried and then crushed and sieved so as to retain only the granules with a size of between 150 and 2,000 microns respectively.
DG Example 2 ; Dispersible granules The following constituents are mixed in a mixer: - active material 75 % - wetting agent (sodium alkylnaphthalene sulphonate) 2 % - dispersing agent (sodium polynaphthalene sulphonate) 8 % - water-insoluble inert filler (kaolin) 15 % This mixture is granulated in a fluid bed, in the presence of water, and is then dried, crushed and sieved so as to produce granules of between 0.15 and 0.80 mm in size.
These granules can be used alone or in solution or dispersion in water so as to produce the 58 required dose. They can also be used to prepare combinations with other active materials, especially fungicides, the latter being in the form of wettable powders or of granules or aqueous suspensions.
As regards the compositions which are suitable for storing and transporting, they more advantageously contain from 0.5 to 95 % (by weight) of active substance.
A subject of the invention is also the use of the compounds according to the invention for combating fungal diseases of plants by preventative or curative treatment of the latter or of their growth site.
They are advantageously applied at doses of 0.005 to 5 kg/ha, and more specifically of 0.01 to 1 kg/ha.
Passages in the description which are out of ambit of the appended claims do not constitute part of the claimed invention.
R!-C-NrrC -S CO,R 60

Claims (25)

1. Compounds containing an imidazolinone or imidazolinethione group, characterised in that they correspond to the general formula (I): in which: - is a sulphur or oxygen atom or an S=0 group - A represents 0 or S - n = 0 or 1 - B represents NR5 or 0 or S or CR5R6 or S02 or C=0. - Rx and R2/ which are identical or different, represent: - H, provided that one of the 2 groups is different from H, or - an alkyl or haloalkyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , alkylsulphonyl-alkyl, monoalkylaminoalkyl , alkenyl or alkynyl radical containing 2 to 6 carbon atoms or - a dxalkylaminoalkyl or cycloalkyl radical containing 3 to 7 carbon atoms or - an aryl radical comprising phenyl, naphthyl, thienyl, furyl, pyridyl, benzothienyl, benzofuryl, 61 quinolyl, isoquinolyl, or methylenedioxyphenyl, .optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl , arylthioalkyl or arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - Rx and R2 can form, with the carbon to which they are bonded on the ring, a carbocycle or a heterocycle having from 5 to 7 atoms, it being possible for these rings to be fused to a phenyl, optionally substituted by 1 to 3 groups chosen from R7; - R3 represents : - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , alkylsulphonyl- . alkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl , oxoalkyl, alkenyl or alkynyl group containing 2 to 6 carbon atoms or - a dialkylaminoalkyl , alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a N, N-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an arylalkyl group, the alkyl part being a radical containing 1 to 6 carbon atoms and the aryl part is phenyl, naphthyl, thienyl, furyl or pyridyl, optionally substituted by 1 to 3 groups chosen from R7; - RA represents: - a hydrogen atom when n is equal to 1 or . - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl , alkenyl or alkynyl group containing 2 to 6 carbon atoms or - a dialkylaminoalkyl, alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a N/N-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an aryl radical, comprising phenyl, naphthyl, thienyl, furyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuryl, guinolyl, isoquinolyl or methylenedioxyphenyl , optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl , arylthioalkyl or arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - an amino group disubstituted by 2 identical or different groups chosen from: - an alkyl radical containing 1 to 6 carbon atoms - an alkoxyalkyl, alkenyl or alkynyl radical containing 3 to 6 carbon atoms - a cycloalkyl radical containing 3 to 7 carbon atoms - an arylalkyl, such as defined above, phenyl or naphthyl radical, optionally substituted by 1 to 3 groups chosen from R7 or 63 - a thienylmethyl or furfuryl radical - a pyrrolidino, piperidino, morpholino or piperazino group, optionally substituted by alkyl containing 1 to 3 carbon atoms ; - R5 represents : - H, except when R,, is H, or - an alkyl, haloalkyl, alkylsulphonyl or haloalkylsulphonyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, acyl, alkenyl, alkynyl, haloacyl, alkoxycarbonyl, haloalkoxycarbonyl, alkoxyalkylsulphonyl or cyanoalkylsulphonyl radical containing 2 to 6 carbon atoms or - an alkoxyalkoxycarbonyl, alkylthioalkoxycarbonyl or cyanoalkoxycarbonyl radical containing 3 to 6 carbon atoms or - a formyl radical or - a cycloalkyl, alkoxyacyl, alkylthioacyl , cyanoacyl, alkenylcarbonyl or alkynylcarbonyl radical containing 3 to 6 carbon atoms or - a cycloalkylcarbonyl radical containing 4 to 8 carbon atoms or - a phenyl; arylalkylcarbonyl, especially phenyl-acetyl and phenylpropionyl ; arylcarbonyl , especially benzoyl, optionally substituted by 1 to 3 groups from R7; thienylcarbonyl; furylcarbonyl; pyridylcarbonyl; benzyloxycarbonyl ; furfuryloxycarbonyl ; tetrahydro-furfuryloxycarbonyl ; thienylmethoxycarbonyl ; 64 pyridylmethoxycarbonyl ; phenoxycarbonyl or (phenylthio) carbonyl, the phenyl being itself optionally substituted by 1 to 3 groups from R7; ( alkylthio ) carbonyl ; ( haloalkylthio) carbonyl ; ( alkoxyalkylthio ) carbonyl ; ( cyanoalkylthio ) carbonyl ; (benzylthio ) carbonyl ; ( f rfurylthio) carbonyl ; ( tetrahydrofurfurylthio ) carbonyl ; ( thienylmethylthio ) -carbonyl; (pyridylmethylthio) carbonyl; or arylsulphonyl radical or - a carbamoyl radical, optionally mono- or disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing 2 to 6 carbon atoms or - a phenyl, optionally substituted by 1 to 3 R7 groups; - a sulphamoyl group, optionally mono- or disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing 2 to 6 carbon atoms or - a phenyl, optionally substituted by 1 to 3 65 R7 groups; - an alkylthioalkylsulphonyl group containing 3 to 8 carbon atoms or a cycloalkylsulphonyl group containing 3 to 7 carbon atoms; — R6 represents: - a hydrogen atom or - a cyano group or - an alkyl group containing 1 to 6 carbon atoms or a cycloalkyl group containing 3 to 7 carbon atoms or - an acyl or alkoxycarbonyl group containing 2 to 6 carbon atoms or - a benzoyl group, optionally substituted by 1 to 3 R7 groups ; - R7 represents: - a halogen atom or - an alkyl, haloalkyl^ alkoxy, haloalkoxy, alkylthio, haloalkylthio or alkylsulphonyl radical containing 1 to 6 carbon atoms or - a cycloalkyl, halocycloalkyl, alkenyloxy, alkynyloxy, alkenylthio or alkynylthio radical containing 3 to 6 carbon atoms or - a nitro or cyano group or - an amino radical, optionally mono- or disubstituted by an alkyl or acyl radical containing 1 to 6 carbon atoms or an alkoxycarbonyl radical containing 2 to 6 carbon atoms - a phenyl, phenoxy or pyridyloxy radical, these radicals optionally being substituted; 66 and their salts, with the exception of the compounds for which, when Rx and R2 are simultaneously phenyl or simultaneously methyl, B is CR5R6, A is sulphur and W is 0 or S; with the exception of the 3 compounds with Rx = hydrogen, n = 1, B = NR5, with R5 and R<, = methyl, AR3 = SCH3, W = 0 and R2 being either a hydrogen, a methyl or a phenyl; also with the exception of the compound in which Ri is a phenyl, R2, R3 and R< are methyl, n is equal to zero , and A and W are both sulphur atoms .
2. Compounds according to Claim 1, characterised in that A is a sulphur atom.
3. Compounds according to Claim 1 , ' characterised in that W is an oxygen atom.
4. Compounds according to Claim 2, characterised in that they correspond to the general formula: in which W, n and Rj^ to R6 have the same meaning as in Claim 1.
5. Compounds according to Claim 2, characterised in that they correspond to the general formula: in which W and Rx to R5 have the same meaning as in Claim 1.
6. Compounds according to Claim 2 , characterised in that they correspond to the general formula : in which B, n and Rx to R4 have the same meaning as in Claim 1.
7. Compounds according to Claim 2 , characterised in that they correspond to the general formula : in which B, n and Rx to R4 have the same meaning as in Claim 1. 68 /
8. Compounds according to one of Claims 1 to 7, characterised in that R5 is a hydrogen atom.
9. Compounds according to Claim 5 , characterised in that R5 is a hydrogen atom (compound lb').
10. Compounds according to one of Claims 1 to 9 , characterised in that Rx and R2 are not hydrogen atoms .
11. Compounds according to one of Claims 1 to 10, characterised in that R2 is an alkyl group containing 1 to 3 carbon atoms .
12. Compounds according to one of Claims 1 to 11, characterised in that Rx is a phenyl, optionally substituted by a group R7.
13. Compounds according to one of Claims 1 to 12, characterised in that R3 is an alkyl group containing 1 to 3 carbon atoms.
14. Compounds according to one of Claims 1 to 13, characterised in that R< is a phenyl, optionally substituted by a group R7.
15. Compounds according to one of Claims 1 to 14, characterised in that R3 is a methyl radical.
16. Process (process A) for the preparation V of the compounds of formula (I) according to Claim 2, characterised in that an S-alkylation of the 2-thio-hydantoins of formula (II) with a compound of formula R3X is carried out, in the presence of base and solvent, according to the scheme: 69 (Π) in which Rlf R2, R3/ R4, B and W have the meaning of Claim 1 and X is a chlorine, bromine or iodine atom, or a sulphate group, or an alkyl- sulphonyloxy or arylsulphonyloxy group.
17. Process for the preparation of the 2-methylthio-2-imidazolin-5-one compounds of formula (Ic) (process B) according to Claim 6, characterised in that a compound of formula (V) is cyclised, by simple · heating in an aromatic solvent at reflux, according to the scheme: in which Rlf R2 R4, B and n have the same meaning as in Claim 1.
18. Process for the preparation of the compounds of formula (V) (process B) according to Claim 17, characterised in that an iminodithiocarbonate of 104091/2 70 formula (III) is condensed with an amine or a hydrazine of formula (IV) according to the scheme: in which Rlt R2, R r B and n have the same meaning as in Claim 1, it being necessary for the acid (III) to be activated for this condensation in the acid chloride form, in the dicyclohexylisourea form using dicyclohexylcarbodiimide, or in the imidazolide form using carbonyldiimidazole .
19. Process for the preparation of the compounds of formula (Id) (process C2) according to the scheme: characterised in that a compound of formula (Id), according to Claim 7, in which R2 is a hydrogen atom (compound (Id')), is reacted with a compound of formula R2X in a solvent and in the presence of base, at a temperature of between -30 eC and +80 "C, X being a 104091/3 chlorine, bromine or iodine atom and j_ to R«, B and n having the same meaning as in Claim 1.
20.. Process according to Claim 19 , characterised in that the base is chosen from the group comprising an alkoxide, a metal hydride or an amide and the solvent is chosen from the group comprising ethers, cyclic ethers, di ethylformamide, dimethyl sulphoxide and aromatic solvents.
21. Process' for the preparation of the compounds of formula (I) (process D) according to Claim 1 in which represents an S=0 group, characterised in .that an S-oxidation of a compound of formula (I) in which W is a sulphur atom is carried out, this oxidation of 2-imidazoline-S-thicnes being carried out with a stoichiometric quantity of peroxides in a solvent at a temperature of between -20 "C and -r2Q"C- 22. Process according to Claim 21 / characterised in that the peroxide is a peracid and the solvent is chosen from the group comprising chloroform and methylene chloride. 104091/1 71a
22. Process for the preparation of a compound of formula (I) (process G) according to
23. (D wherein Rls R2, R4 and n and B have the same meaning as in claim 1, R3X is an alkylhalide or alkylsulfate or in which X is an alkylsulphonyloxy or aryl-sulphonyloxy and R3 is as defined in claim 1.
24. Fungicidal compositions comprising, in combination with one or more solid or liquid vehicles which are agriculturally acceptable and/or surface-active agents which are also agriculturally acceptable, one (or more) active materials which is/are a compound of formula I: 104091/2 72 in which: - is a sulphur or oxygen atom or a S=0 group - A represents 0 or S - n = 0 or 1 - B represents NR5 or 0 or S or CR3R6 or S02 or C=0 - Rj_ and R2, which are identical or different, represent : - H, provided that one of the 2 groups is different from H, or - an alkyl or haloalkyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl , alkylsulphonyl-alkyl, monoalkylaminoalkyl , alkenyl or alkynyl radical containing 2 to 6 carbon atoms or - a dialkylaminoalkyl or cycloalkyl radical containing 3 to 7 carbon atoms or - an aryl radical comprising phenyl, naphthyl, thienyl, furyl, pyridyl, benzothienyl, benzofuryl, quinolyl, isoquinolyl, or methylenedioxyphenyl , optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl , arylthioalkyl or 104091/2 73 arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - R-L and R2 can form, with the carbon to which they are bonded on the ring, a carbocycle or a heterocycle having from 5 to 7 atoms, it being possible for these rings to be fused to a phenyl, optionally substituted by 1 to 3 groups chosen from R7; - R3 represents : - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, alkylsulphonyl-alkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl, oxcalkyl, alkenyl or alkynyl group containing 2 to 6 carbon atoms or - a dialkylaminoalkyl , alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a N,N-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an arylalkyl group, the alkyl part being a radical containing 1 to 6 carbon atoms and the aryl part is phenyl, naphthyl, thienyl, furyl or pyridyl, optionally substituted by 1 to 3 groups chosen from R7; - R,, represents : - a hydrogen atom when n is equal to 1 or - an alkyl group containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, haloalkyl, cyanoalkyl, thiocyanatoalkyl, alkenyl or alkynyl group containing 2 to 6 carbon atoms or 104091/2 74 - a dialkylaminoalkyl, alkoxycarbonylalkyl or N-alkylcarbamoylalkyl group containing 3 to 6 carbon atoms or - a N,N-dialkylcarbamoylalkyl group containing 4 to 8 carbon atoms or - an aryl radical, comprising phenyl, naphthyl, thienyl, furyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuryl, quinolyl, isoquinolyl or methylenedioxyphenyl , optionally substituted by 1 to 3 groups chosen from R7 or - an arylalkyl, aryloxyalkyl , arylthioalkyl or arylsulphonylalkyl radical, the terms aryl and alkyl having the definitions given above or - an amino group disubstituted by 2 identical or different groups chosen from: - an alkyl radical containing 1 to 6 carbon atoms - an alkoxyalkyl, alkenyl or alkynyl radical containing 3 to 6 carbon atoms - a cycloalkyl radical containing 3 to 7 carbon atoms - an arylalkyl, such as defined above, phenyl or naphthyl radical, optionally substituted by 1 to 3 groups chosen from R7 or - a thienylmethyl or furfuryl radical - a pyrrolidino, piperidino, morpholino or piperazino group, optionally substituted by alkyl containing 1 to 3 carbon atoms; 104091/2 75 - R5 represents: - H, except when R4 is H, or - an alkyl, haloalkyl, alkylsulphonyl or haloalkylsulphonyl radical containing 1 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl, acyl, alkenyl, alkynyl, haloacyl, alkoxycarbonyl, haloalkoxycarbonyl , alkoxyalkylsulphonyl or cyanoalkylsulphonyl radical containing 2 to 6 carbon atoms or - an alkoxyalkoxycarbonyl, alkylthioalkoxycarbonyl or cyanoalkoxycarbonyl radical containing 3 to 6 carbon atoms or - a formyl radical or - a cycloalkyl, alkoxyacyl, alkylthioacyl , cyanoacyl, alkenylcarbonyl or alkynylc rbonyl radical containing 3 to 6 carbon atoms or - a cycloalkylcarbonyl radical containing 4 to 8 carbon atoms or - a phenyl; arylalkylcarbonyl, especially phenyl-acetyl and phenylpropionyl; arylcarbonyl , especially benzoyl, optionally substituted by 1 to 3 groups from R7; thienylcarbonyl; furylcarbonyl; pyridylcarbonyl; benzyloxycarbonyl; furfuryloxycarbonyl; tetrahydro-furfuryloxycarbonyl ; thienylmethoxycarbonyl; pyridyl-methoxycarbonyl ; phenoxyc rbonyl or (phenylthio)carbonyl, the phenyl being itself optionally substituted by 1 to 3 groups from R7; ( alkylthio ) carbonyl ; ( haloalkylthio ) carbonyl ; 104091/2 76 ( alkoxyalkylthio ) carbonyl ; ( cyano lkylthio ) carbonyl ; Ibenzylthio ) carbonyl ; ( furfurylthio ) carbonyl ; ( etrahydrofurfurylthio ) carbonyl ; ( thienylmethylthio ) -carbonyl; (pyridylmethylthio) carbonyl; or arylsulphonyl radical or .- a carbamoyl radical, optionally mono- or disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing 2 to S carbon atoms or - a phenyl, optionally substituted by 1 to 3 R7 groups ; - a sulphamoyl group, optionally mono- or disubstituted by - an alkyl or haloalkyl group containing 1 to 6 carbon atoms or - a cycloalkyl, alkenyl or alkynyl group containing 3 to 6 carbon atoms or - an alkoxyalkyl, alkylthioalkyl or cyanoalkyl group containing- 2 to 6 carbon atoms or - a phenyl, optionally substituted by 1 to 3 R7 groups; - an alkylthioalkylsulphonyl group containing 3 to ¾ carbon atoms or a cycloalkylsulphonyl group containing 3 to 7 carbon atoms; 104091/3 77 - R6 represents : - a hydrogen atom or - a cyano group or - an alkyl group containing 1 to 6 carbon atoms or a cycloalkyl group containing 3 to 7 carbon atoms or - an acyl or alkoxycarbonyl group containing 2 to 6 carbon atoms or - a benzoyl group, optionally substituted by 1 to 3 R7 groups ; - R7 represents : - a halogen atom or - an alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, haloalkylthio or alkylsulphonyl radical containing 1 to 6 carbon atoms or - a cycloalkyl, halocycloalkyl, alkenyloxy, alkynyloxy, alkenylthio or alkynylthio radical containing 3 to 6 carbon atoms or - a nitro or cyano group or - an amino radical, optionally mono- or disubstituted by an alkyl or acyl radical containing 1 to 6 carbon atoms or an alkoxycarbonyl radical containing 2 to 6 carbon atoms - a phenyl, phenoxy for pyridyloxy radical, these radicals optionally being substituted; and their salts .
25. Fungicidal compositions according to Claim 24, characterised in that they contain from 0.5 % to 95 % by weight of compounds according to one of 104091/3 ; 78 Claims 1 to 15. Process for the treatment of crops affected or capable, of being affected by fungal diseases, characterised in that there is preventively or curatively applied an effective quantity of a compound according to one of Claims 1 to 15 or of a composition according to Claims 34 or 35. .2? . Treatment process according to Claim 26 , characterised in that the effective dose is between 0.005 and 5 kg/ha. Treatment process according to Claim 27 characterised in that the effective dose is between 0.01 and 1 kg/ha.
IL104091A 1991-12-20 1992-12-14 Fungicidal compositions containing 2-imidazolin- 5-one and 2-imidazolin-5- thione derivatives, some such derivatives and process for their preparation IL104091A (en)

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EP1008589A1 (en) * 1992-05-22 2000-06-14 E.I. Du Pont De Nemours & Company Incorporated Fungicidal imidazolinones

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EP0551048B1 (en) 2002-08-07
AU671389B2 (en) 1996-08-22
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PL170819B1 (en) 1997-01-31
AU651021B2 (en) 1994-07-07
YU49164B (en) 2004-05-12
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HU9204030D0 (en) 1993-04-28
FI925763A (en) 1993-06-21
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