JP2008156279A - Wood preservative - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wood preservative not only exhibiting high antifungal effects on fungi, but also having high antiseptic properties to wood, and to provide a method for preserving the wood by precisely controlling the fungi causing the decay of the wood in high efficiency to reduce the decay. <P>SOLUTION: The wood preservative contains a compound represented by general formula (I) (wherein, R<SP>1</SP>and R<SP>2</SP>are the same or different and each a hydrogen atom, a halogen atom or a halogenated alkoxy group, with the proviso that the case in which both of the R<SP>1</SP>and R<SP>2</SP>are hydrogen is excluded; R<SP>3</SP>is an alkyl group; R<SP>4</SP>is a hydrogen atom or a group represented by the formula: -CH<SB>2</SB>CH<SB>2</SB>- obtained by binding the R<SP>3</SP>and R<SP>4</SP>; and -NA is an aromatic heterocyclic group which may have a substituent, and which contains three or four nitrogen atoms) as an active ingredient. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wood preservative, and more particularly to a wood preservative that is effective against decay by wood-rotting fungi, a preparation containing the wood preservative, and a method for preserving wood.

  Conventionally, various wood preservatives for preventing the decay of wood are known, and as their active ingredients, various compounds having a wood preservative action, a bactericidal action, an antifungal action and the like are known, Efficacy is not always sufficient against basidiomycetes such as Fomitopsis palustris and Trametes versicolor, which decay wood and greatly degrade its strength.

Patent Document 1 reports an azole compound as an antifungal agent.
JP-A-6-49033

  An object of the present invention is to provide a preservative wood preservative having a high antifungal effect against molds and having a high antiseptic property against wood.

  Another object of the present invention is to provide a method for preserving wood that reliably and efficiently controls molds that impair the aesthetics of wood, thereby suppressing decay.

  As a result of intensive studies to solve the above problems, the present inventor has found that a given azole compound has a high control activity against molds that impair the aesthetics of wood and basidiomycetes that cause decay. . As a result of further research based on this knowledge, the present invention has been completed.

  That is, the present invention relates to the following wood preservative and a wood preservation method using the same.

  Item 1. Formula (I):

(In the formula, R ¹ and R ² are the same or different and each represents a hydrogen atom, a halogen atom or a halogenated alkoxy group, except that R ¹ and R ² are both hydrogen atoms. R ³ is an alkyl group, and R ⁴ is It represents a hydrogen atom or a group represented by the formula: —CH ₂ CH ₂ — in which R ³ and R ⁴ are bonded.

Represents an aromatic heterocyclic group containing 3 or 4 nitrogen atoms which may have a substituent. The wood preservative which contains the compound represented by this as an active ingredient.

  Item 2. The substituted phenyl group bonded to the 2-position carbon in the compound represented by the general formula (I) is represented by the formula (II):

(In the formula, R ¹ and R ² are the same as above.)
Item 2. The wood preservative according to Item 1, which is a group represented by:

Item 3. In the formula (II), the combination of R ¹ and R ² (R ¹ , R ² ) is (fluorine atom, fluorine atom), (fluorine atom, hydrogen atom), (chlorine atom, hydrogen atom), (hydrogen atom, Item 3. The wood preservative according to Item 2, which is (fluorine atom) or (trifluoromethyl, hydrogen atom).

  Item 4. Said substituent:

Item 4. The wood preservative according to any one of Items 1 to 3, wherein is an aromatic hetero 5-membered ring group in which at least two of the three or four nitrogen atoms constituting Ring A are adjacent.

  Item 5. 5. A preparation comprising the wood preservative according to any one of Items 1 to 4 and a carrier.

  Item 6. 6. A method for preserving wood, comprising treating target wood with the preparation according to item 5.

  The wood preservative of the present invention exhibits high antiseptic and preservability for wood by exhibiting a high effect on molds that impair the beauty and basidiomycetes that cause decay.

  The wood preservative of the present invention has the general formula (I):

(In the formula, R ¹ and R ² are the same or different and each represents a hydrogen atom, a halogen atom or a halogenated alkoxy group, except that R ¹ and R ² are both hydrogen atoms. R ³ is an alkyl group, and R ⁴ is It represents a hydrogen atom or a group represented by the formula: —CH ₂ CH ₂ — in which R ³ and R ⁴ are bonded.

Represents an aromatic heterocyclic group containing 3 or 4 nitrogen atoms which may have a substituent. ) As an active ingredient.

Examples of the halogen atom represented by R ¹ and R ² include a fluorine atom, a chlorine atom, and a bromine atom, and a fluorine atom or a chlorine atom is preferable, and a fluorine atom is particularly preferable.

The alkoxy group in the halogenated alkoxy group represented by R ¹ and R ² is preferably a linear or branched alkoxy group having 1 to 6 carbon atoms (eg, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy). , Sec-butoxy, tert-butoxy, pentyloxy, isopentyloxy, neopentyloxy, hexyloxy and the like. More preferably, it is a linear or branched alkoxy group having 1 to 4 carbon atoms (eg, methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert-butoxy, etc.), particularly preferably 1 carbon atom. To 3 linear or branched alkoxy groups (eg, methoxy, ethoxy, propoxy, isopropoxy, etc.).

  Examples of the halogen in the halogenated alkoxy group include fluorine, chlorine, bromine and the like. Preferably, they are a fluorine atom or a chlorine atom.

  The number of halogens in the halogenated alkoxy group is preferably 1 to 8, particularly preferably 1 to 3.

  Preferable specific examples of the halogenated alkoxy group include, for example, trifluoromethoxy, difluoromethoxy, trichloromethoxy, 2,2,2-trifluoroethoxy, 2,2,2-trichloroethoxy, 2,2,3,3- Examples include tetrafluoropropoxy, 4,4,5,5-tetrafluoropentyloxy, 6,6,6-trifluorohexyloxy, and the like. More preferable specific examples include trifluoromethoxy, difluoromethoxy, trichloromethoxy, 2,2,2-trifluoroethoxy, 2,2,2-trichloroethoxy, 2,2,3,3-tetrafluoropropoxy and the like. Can be mentioned. Further, trifluoromethoxy and difluoromethoxy are particularly preferable.

Among the compounds represented by the above general formula (I), the substitution pattern of R ¹ and R ² on the substituted phenyl group bonded to the 2-position carbon is represented by the formula (II):

(In the formula, R ¹ and R ² are the same as above.)
Is preferred. Among them, the combination of R ¹ and R ² (R ¹ , R ² ) is (fluorine atom, fluorine atom), (fluorine atom, hydrogen atom), (chlorine atom, hydrogen atom), (hydrogen atom, fluorine atom), (Trifluoromethyl, hydrogen atom) is particularly preferred.

Examples of the alkyl group represented by R ³ include straight-chain or branched alkyl groups having 1 to 3 carbon atoms, such as methyl, ethyl, propyl, and isopropyl. Preferably it is methyl.

  formula:

As the aromatic heterocyclic group containing 3 or 4 nitrogen atoms represented by the above, an aromatic heterocyclic 5-membered cyclic group in which at least two of the 3 or 4 nitrogen atoms constituting the ring are adjacent to each other is For example, 1H-1,2,4-triazol-1-yl, 4H-1,2,4-triazol-4-yl, 1H-1,2,3-triazol-1-yl, 2H-1, Examples include 2,3-triazol-2-yl, 1H-tetrazol-1-yl, 2H-tetrazol-2-yl and the like. In particular, an aromatic hetero 5-membered cyclic group containing 3 or 4 nitrogen atoms in which all the nitrogen atoms constituting the ring are adjacent to each other is preferable, for example, 1H-1,2,3-triazol-1-yl, 2H-1,2,3-triazol-2-yl, 1H-tetrazol-1-yl, 2H-tetrazol-2-yl and the like are preferable. In particular, 1H-1,2,3-triazol-1-yl and 2H-1,2,3-triazol-2-yl are preferable.

  The aromatic heterocyclic group may have a substituent. Examples of the substituent include a halogen atom, a lower alkyl group which may be halogenated; a carboxyl group which may be esterified or amidated, and the like. Is mentioned. The number of substituents of the aromatic heterocyclic group is 0 to 3, preferably 0 or 1.

  Examples of the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom.

  The lower alkyl group in the lower alkyl group which may be halogenated is preferably a linear or branched alkyl group having 1 to 6 carbon atoms. Specific examples thereof include, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, isohexyl and the like. These linear or branched alkyl groups are preferred. Examples of the halogen for the substituent include fluorine, chlorine, bromine and iodine, and among these, fluorine and chlorine are particularly preferable. Specific examples include, for example, trifluoromethyl, difluoromethyl, trichloromethyl, 2,2,2-trifluoroethyl, 2,2,2-trichloroethyl, 2,2,3,3-tetrafluoropropyl, 4,4. , 5,5-tetrafluoropentyl, 6,6,6-trifluorohexyl and the like.

  Examples of the carboxyl group that may be esterified or amidated include a carboxyl group, a lower alkyl (having 1 to 4 carbon atoms) oxycarbonyl group (eg, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl), a carbamoyl group, Lower alkyl (having 1 to 6 carbon atoms) aminocarbonyl group (eg, methylaminocarbonyl, dimethylaminocarbonyl, butylaminocarbonyl, dipropylaminocarbonyl) and the like can be mentioned. Of these, a carboxyl group, a methoxycarbonyl group, an ethoxycarbonyl group, and a carbamoyl group are particularly preferable.

In the compound represented by the general formula (I), the 1-position and 2-position carbons can be asymmetric carbons. Each of the (R) configuration and the (S) configuration exhibits effective control activity against molds, and thus may be any of an optically active form, a racemate, and a diastereomer mixture. Among them, the compound represented by the general formula (I) preferably has a 1-position carbon in the (R) configuration. The carbon at the 2-position becomes an asymmetric carbon when R ³ is an alkyl group and R ⁴ is a hydrogen atom, and in this case, a carbon having a (R) configuration is preferable. In particular, (2R, 3R) isomers are preferred.

  The compound represented by the general formula (I) can be produced by the method described in JP-A-6-49033 (hereinafter sometimes referred to as Patent Document 1) or a method analogous thereto.

  Patent Document 1 (Japanese Patent Laid-Open No. 6-49033) describes various azole compounds useful as antifungal agents, which include prevention / treatment of fungal infections or antifungals for agriculture. Only the action is disclosed. On the other hand, in this invention, it is related with the wood preservative which prevents the decay of a building or a house, and patent document 1 and this invention differ greatly by the point of the microorganisms made into object. Therefore, the present invention is completely different from the application described in Patent Document 1, and cannot be predicted.

  As long as the preservative wood preservative of the present invention contains the compound (active ingredient) represented by the above general formula (I), the form of the preparation is not particularly limited.

  For example, liquid (solution, wettable powder, suspension, dispersion, emulsion, oil, lotion, microcapsule, microsphere, flowable, etc.), solid (powder, granule, tablet, foaming agent, etc.) ), Semi-solid agents (pastes, creams, etc.), sprays or aerosols. In addition, the carriers and additives described below are appropriately selected and used according to these dosage forms.

  The carrier for producing the above-mentioned preparation can be appropriately selected according to the dosage form of the wood preservative, and can be any of aqueous and oily carriers, for example, liquid carriers [silicone oil, animal fats and oils] , Oily carriers such as vegetable oils (eg, rapeseed oil); aqueous solvents, organic solvents, etc.], gel carriers (alginic acids, cellulose or derivatives thereof, polyethylene glycol, etc.), solid or semi-solid carriers [powdered carriers {pesticides , Various carriers frequently used in garden preparations, for example, clay minerals (zeolite, sepiolite, attapulgite (palygorskite), etc.), synthetic zeolite, charcoal (charcoal, bamboo charcoal, etc.), talc (talc powder, wax stone powder, etc.) , Clays (such as finely ground clay), pumices (rhyolite natural glass, perlite (such as Neolite Kosan Co., Ltd.)), mineral Granules (silica sand, vermiculite, mica, calcium carbonate, etc.), metal oxides (titanium oxide, etc.), sulfur powder, urea powder, vegetable powders (peat moss, wood powder, starch, etc.); dextrin, etc. Sugars (polysaccharides, etc.); synthetic polymers such as carboxyvinyl polymers and crosslinked polyvinylpyrrolidone; cellulose ethers; metal soaps, etc.), resins having film-forming ability, waxes, solid paraffin, long-chain fatty acid esters, higher alcohols, Higher fatty acid etc.) etc.]. The carriers may be used alone or in combination of two or more.

Among the liquid carriers, examples of the aqueous solvent or organic solvent include water, alcohols [trade name: ISOFOL 14 (manufactured by Condea Japan Co., Ltd.); lower aliphatic alcohols such as ethanol and isopropanol: ethylene glycol, diethylene glycol and the like. (Poly) alkylene glycols; aliphatic polyhydric alcohols such as glycerin], ethers (chain ethers such as diethyl ether; cyclic ethers such as tetrahydrophten; carbitols such as carbitol and diethylene glycol dimethyl ether), ketones (Acetone, methyl ethyl ketone, methyl isobutyl ketone, etc.), cellosolves (alkyl cellosolve, such as methyl cellosolve), esters (ethyl acetate, fatty acid esters such as diisononyl adipate, etc.) )), Hydrocarbons [hydrocarbon solvents based on naphthene (trade name: Naphthezol 240 (manufactured by Nippon Petrochemical Co., Ltd.)); aliphatic hydrocarbons such as hexane; alicyclic rings such as cyclohexane Formula hydrocarbons: Toluene, xylene, trade name: Nisseki Hyzol SAS-310 (manufactured by Shin Nippon Petrochemical Co., Ltd.) and other aromatic hydrocarbons; halogenated hydrocarbons such as methylene chloride and chloroform], amides (Dimethylformamide etc.), nitriles (acetonitrile etc.), sulfoxides (dimethylsulfoxide etc.) etc. are mentioned. These solvents can be used alone or in combination of two or more. Of these solvents, water or water-soluble organic solvents (lower aliphatic alcohols, (poly) alkylene glycols, aliphatic polyhydric alcohols, acetone, etc.) are often used. Among the solvents, a highly volatile solvent (for example, a lower alcohol such as ethanol, acetone, acetonitrile, short chain ether, etc.) may be used.

  When the preservative wood preservative of the present invention is a liquid agent or a semi-solid agent, it can be produced, for example, by diluting the active ingredient with an appropriate liquid carrier. In the case of a wettable powder, a solid or semi-solid carrier may be further used.

  When the preservative wood preservative of the present invention is a solid agent, it can be produced, for example, by diluting or granulating the active ingredient with a suitable solid carrier. Examples of the solid carrier include the solid carriers exemplified above. These solid carriers are often used as bulking agents. These can be used alone or in combination.

  When the preservative wood preservative of the present invention is an aerosol agent, it can be produced, for example, by diluting the active ingredient with an appropriate solvent as necessary and filling the container together with a propellant. Examples of the solvent include the aqueous solvents and organic solvents exemplified above. Examples of the propellant include Freon and liquefied natural gas.

  The preservative wood preservative of the present invention has various additives as required depending on the type of preparation, for example; stabilizers such as antioxidants and ultraviolet absorbers; binders; and film-forming ability. Resin; emulsifier, dispersant, spreading agent, wetting agent, penetrating agent; thickener; flow aid; anti-caking agent; flocculant; UV scattering agent; moisture remover; A pH adjusting agent or the like may be contained.

  Examples of the antioxidant include 4,4′thiobis-6-t-butyl-3-methylphenol, butylated hydroxyanisole (2-t-butyl-4-methoxyphenol and 3-t-butyl-4- A mixture of methoxyphenol), p-octylphenol, mono (or di or tri)-(α-methylbenzyl) phenol, 2,6-di-t-butyl-p-cresol (BHT), pentaerythrityl tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl)] propionate and other phenolic antioxidants; amine antioxidants such as N, N′-di-2-naphthyl-p-phenylenediamine; 2 Hydroquinoline-based antioxidants such as 1,5-di (t-amyl) hydroquinoline; Sulfur-based oxidation such as dilaurylthiodiuropionate Sealant; and phosphorus-based antioxidants such as triphenyl phosphite may be exemplified.

  Examples of the ultraviolet absorber include benzotriazoles such as 2- (2′-hydroxy-5′-methylphenyl) benzotriazole and 2- (2′-hydroxy-4′-n-octoxyphenyl) benzotriazole. Compounds; benzophenone compounds such as 2-hydroxy-4-methoxybenzophenone and 2-hydroxy-4-n-octoxybenzophenone; salicylic acid compounds such as phenyl salicylate and pt-butylphenyl salicylate; 2-ethylhexyl-2- Cyano-3,3-diphenyl acrylate, 2-ethoxy-2'-ethyl oxalic acid bisanilide, dimethyl-1- (2-hydroxyethyl) -4-hydroxy-2,2,6,6-tetramethylpiperidine heavy succinate Examples include condensates.

  Examples of the resin having the film forming ability include polyolefins such as polyethylene and polypropylene, polyvinyl acetate, polyvinyl alcohol, acrylic resins, polyvinyl chloride, styrene resins, fluororesins, chlorinated polyolefins, alkyd resins, polyamides, and polyesters. Examples thereof include thermoplastic resins such as phenol resins, urea resins, melamine resins, furan resins, unsaturated polyester resins, and epoxy resins.

  As the emulsifier, dispersant, spreading agent, wetting agent, and penetrating agent, conventional surfactants such as anionic surfactants, nonionic surfactants, and cationic surfactants can be used. Examples of the anionic surfactant include metal soaps, sulfate ester salts such as alkyl sodium sulfate, alkyl benzene sulfonates such as sodium alkyl benzene sulfonate, sodium alkyl naphthalene sulfonate [for example, trade name, manufactured by Kao Corporation Perx NB-L] alkylnaphthalene sulfonic acid, sulfosuccinic acid dialkyl sodium [for example, trade name Neocor SW-C, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd., etc.] sulfosuccinic acid dialkyl salt, polycarboxylic acid type surfactant [ For example, Sanyo Chemical Co., Ltd., trade name Toxanone GR-30], olefin sulfonate, polyoxyethylene distyrenated phenyl ether sulfate ammonium salt [eg, Daiichi Kogyo Seiyaku Co., Ltd., trade name Dixzol 60A], sodium lignin sulfonate And potassium lignin sulfonate. Nonionic surfactants include, for example, polyoxyethylene alkylene alkyl ethers [eg Sanyo Chemical Co., Ltd., trade name NAROACTY CL100], polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers [eg, first Polyoxyethylene aryl ether, fatty acid polyhydric alcohol ester, fatty acid polyhydric alcohol ester, fatty acid polyhydric alcohol polyoxyethylene, sucrose fatty acid ester, ethylene oxide, manufactured by Kogyo Seiyaku Co., Ltd., trade name Inogen EA-142] And a block copolymer of propylene oxide [for example, trade name Newpol PE-64 manufactured by Sanyo Chemical Co., Ltd.].

  As a thickener, for the purpose of improving the storage stability of the flowable agent, for example, ion-crosslinked organic acids such as sodium polyacrylate, potassium polyacrylate, sodium alginate, trisodium citrate, For example, gums such as gum arabic, guar gum and derivatives thereof, bee gum, xanthan gum, welan gum, lanthanum gum, dulan gums such as methyl cellulose (MC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC) ), Hydroxyethyl methylcellulose (HEMC), hydroxypropylmethylcellulose (HPMC) and cellulose derivatives such as derivatives thereof. Preferably, celluloses are used.

  The wood preservative of the present invention may further contain a termite control component as another component. Examples of the termite control component include neonicotinoid compounds, organochlorine compounds, organophosphorus compounds, carbamate compounds, pyrrole compounds, phenylpyrazole compounds, oxadiazine compounds, semicarbazone compounds, plants, plant Examples include treated products or derivatives.

  Examples of neonicotinoid compounds include (E) -1- (2-chloro-1,3-thiazol-5-ylmethyl) -3-methyl-2-nitroguanidine (generic name: clothianidin), N-acetyl. -N- (2-chlorothiazol-5-yl) methyl-N'-methyl-N ''-nitroguanidine, N- (2-chlorothiazol-5-yl) methyl-N-methoxycarbonyl-N'-methyl -N "-nitroguanidine, 1- (6-chloro-3-pyridylmethyl) -N-nitroimidazoline-2-ylideneamine (generic name: imidacloprid), 3- (2-chloro-thiazol-5-ylmethyl)- 5- [1,3,5] oxadiazinan-4-ylindene-N-nitroamine (generic name: thiamethoxam), (RS) -1-methyl-2-nitro-3- (tetrahydro-3-furylmethyl) guanidine (general Name : Dinotefuran). These neonicotinoid compounds may be used alone or in combination of two or more.

  Of the above examples, clothianidin, imidacloprid, thiamethoxam and dinotefuran are preferable, and clothianidin is more preferable.

  Examples of the organic chlorine compound include Kelsen.

  Examples of the organophosphorus compounds include phoxime, pyridafenthione, fenitrothion, tetrachlorvinphos, diclofenthione, propetanephos, and the like. These organophosphorus compounds may be used alone or in combination of two or more.

  Examples of the carbamate compound include carbaryl, fenobucarb, propoxur and the like. These carbamate compounds may be used alone or in combination of two or more. Of the above examples, phenocarb is preferable.

  Examples of the pyrrole compound include chlorfenapyr.

  Examples of the phenyl virazole-based compound include fipronil.

  Examples of the oxadiazine compound include indoxacarb.

  Examples of the semicarbazone compound include α- (α, α, α-trifluoro-m-toluoyl) -p-trinitrile-4- (p-trifluoromethoxyphenyl) semicarbazone.

  Examples of the plant as a termite control component, and a processed product or derivative thereof include those described in JP 2002-307406 A, JP 2003-252708 A, and JP 2005-74776 A, for example. It is done.

  The above-mentioned termite control components may be used alone or in combination of two or more.

  Among the termite control components exemplified above, neonicotinoid compounds, carbamate compounds, and phenylpyrazole compounds are preferred, neonicotinoid compounds and phenylvirazole compounds are more preferred, and neonicotinoid compounds are preferred. Particularly preferred. Of the neonicotinoid compounds, clothianidin is particularly preferable.

  When other active ingredients (such as antiseptic and fungicidal agents and termite control ingredients) are included, the ratio of the compound represented by the general formula (I) to the other active ingredients is, for example, the general formula (I). The other active ingredient is 0.01 to 100000 parts by weight, preferably 0.1 to 1000 parts by weight, based on 100 parts by weight of the represented compound.

  In the wood preservative of the present invention, the compound represented by the general formula (I) and other active ingredients may be microencapsulated.

  Microencapsulating agents include, for example, interfacial polymerization method, in situ polymerization method (interfacial reaction method), coacervation method, submerged drying method, melt dispersion cooling method, submerged cured film method, coating method (suspension in air) Method), spray drying method, electrostatic coalescence method, vacuum vapor deposition method and the like. Specific examples of the microencapsulation of the termite control component include, for example, JP-A-61-249904, JP-B-6-92282, JP-B-6-92283, JP-A-10-114608, Examples thereof include the method described in Japanese Utility Model Publication No. 2000-247821.

  The above resin emulsion is added to the aqueous dispersion containing the microencapsulating agent obtained by the above method, and further, if necessary, a dispersant, a surfactant, an anti-settling agent and the like are appropriately added. A microencapsulating agent can be obtained by drying the obtained aqueous suspension.

  The microencapsulating agent is preferably prepared with an average particle size of 6 to 100 μm, preferably 10 to 30 μm. The particle size and average particle size of the microencapsulating agent are obtained, for example, by measuring the size of the particle size and its distribution state (particle size distribution) using a commercially available laser diffraction / scattering particle size distribution device. Can do.

  The wood preservative of the present invention can be applied to wood by methods such as applying to wood, spraying, pouring, spraying, dipping wood, mixing with wood, and the like.

  The kind of wood to which the wood preservative of the present invention is applied is not particularly limited as long as it is industrially usable wood, but hinoki, hiba, cedar, batesga, pine and the like are preferable. Protected wood includes, for example, structural timber, wooden squares, track pillows, bridge parts, breakwaters, wooden cars, pallets, containers, wooden coverings, wooden windows and doors, plywood, slabs, joinery Commonly used wood-based material for work or construction or building construction.

  The content of the active ingredient, that is, the compound represented by the general formula (I) can be appropriately selected according to the purpose of use. For example, the concentration in the preparation at the time of use is 0.001 to 0.001. It is 90% by weight, preferably 0.01 to 30% by weight, and more preferably 0.05 to 5% by weight.

  Hereinafter, the present invention will be specifically described with reference to examples and test examples, but the present invention is not limited thereto.

Examples 1-16, 18 and 19
The compounds of Examples 1 to 16, 18 and 19 were produced according to the method described in Patent Document 1 (Japanese Patent Laid-Open No. 6-49033) or a method analogous thereto. Tables 1 to 3 show the structural formulas of the respective compounds.

Example 17
The compound of Example 17 was produced by synthesizing the following compound 1 according to Bull. Chem. Soc. Jpn., 67, 1427-1433 (1994), and producing the compound 1 from the compound 1 by the following steps. The compound of Example 17 is a racemate (2R ^* , 3R ^* ) corresponding to the optically active compound (2R, 3R) of Example 1.

To a solution of compound 1 (1 g, 3.98 mmol) in 20 ml of DMF, 1H-1,2,3-triazole (0.55 g, 7.97 mmol) and K ₂ CO ₃ (2.75 g, 19.9 mmol) are added, and then at 80 ° C. Stir for 21 hours. DMF was distilled off under reduced pressure, ethyl acetate was added thereto, and K ₂ CO ₃ was separated by filtration. This was washed with water and brine, the organic phase was dried, and the solvent was distilled off to obtain a crude product containing the target compound. This was purified by silica gel column chromatography (CH ₂ Cl ₂ : acetone = 1: 1) and further crystallized from diisopropyl ether to obtain the title target compound (434 mg, 34%). The structural formulas of the compounds are shown in Table 3.
Compound of Example 17 (racemate):
¹ H-NMR (CDCl ₃ ) δ: 1.43 (3H, d, J = 7.0 Hz), 3.57 (1H, d, J = 14.4 Hz), 4.91 (1H, dd, J = 14.4, 1.2 Hz), 5.29 ( 1H, s), 5.54 (1H, q, J = 7.0Hz), 6.75-6.92 (2H, m), 7.43-7.63 (1H, m), 7.65 (1H, s), 7.77 (2H, s), 7.85 (1H, s)
IR (KBr) νmax cm ^-1 : 3340, 3302, 1618, 1500, 1421
Elemental analysis _{C 14 H 14 F 2 N 6} O
Calculated value C: 52.50, H: 4.41, N: 26.24
Actual value C: 52.33, H: 4.47, N: 26.22
Example 20
The compound of Example 20 was produced by the following process.

(1) Add 0.5 ml of HBr-AcOH to 30 ml of AcOH solution of Compound 1 (17.04 g, 77.68 mmol) prepared according to the document Chem. Pharm. Bull., 26 (8) 2502-2507 (1978). To the solution, Br ₂ (12.46 g, 77.68 mmol) was slowly added dropwise at room temperature. The mixture was stirred at the same temperature for 3 hours, extracted with methylene chloride, washed twice with water and twice with a pH 7.0 buffer. The obtained organic phase was dried and the solvent was distilled off to obtain Compound 2 (21.3 g, 92%).
(2) Compound 2 (5 g, 16.8 mmol) was dissolved in 100 ml of acetone, and 1H-tetrazole (1.76 g, 25 mmol) and K ₂ CO ₃ (4.63 g, 33.6 mmol) were added thereto and refluxed overnight. K ₂ CO ₃ was filtered off from the reaction solution, washed with ethyl acetate, water and ethyl acetate were added thereto, and the mixture was extracted with ethyl acetate. The obtained organic phase was washed with water and dried, and the solvent was distilled off to obtain a crude product containing compound 3. This was purified by silica gel column chromatography (ethyl acetate: hexane = 1: 1 to 3: 2) to obtain Compound 3 (1.69 g, 40.1%).
(3) Trimethylsulfonium iodide To a solution of Me ₃ SI (4.13 g, 18.57 mmol) in dimethyl sulfoxide DMSO (45 ml) was added NaH (668 mg, 16.71 mmol), and the mixture was stirred at room temperature for 10 minutes. To this was added a solution of compound 3 (3.1 g, 12.38 mmol) in DMSO (50 ml), and the mixture was stirred at room temperature for 3 hours. Water and ethyl acetate were added to the reaction solution, extracted twice with ethyl acetate, and washed three times with water. The obtained organic phase was dried, the solvent was distilled off, diethyl ether was added thereto for crystallization, and the crystals of Compound 4 were collected by filtration (2.1 g). The filtrate was further concentrated and purified by silica gel column chromatography (ethyl acetate: hexane = 1: 1) to obtain Compound 4 (430 mg). Both were combined to obtain Compound 4 (2.53 g, 77.3%).
(4) To a solution of compound 4 (2.4 g, 9 mmol) in 50 ml of DMF, 1H-1,2,4-triazole (1.86 g, 27 mmol) and K ₂ CO ₃ (3.71 g, 27 mmol) were added, and For 5 hours. Ethyl acetate was added thereto, K ₂ CO ₃ was filtered off, and ethyl acetate and DMF were distilled off under reduced pressure. Ethyl acetate and water were added thereto, and the mixture was extracted twice with ethyl acetate and washed twice with water. The obtained organic phase was dried and the solvent was distilled off to obtain a crude product containing the target compound. This was purified by silica gel column chromatography (CH ₂ Cl ₂ : acetone = 1: 1) and further crystallized from diisopropyl ether to obtain the title compound (1.32 g, 44%). The structural formulas of the compounds are shown in Table 3.
Compound of Example 20:
Mp 183-185 ℃
Elemental analysis value C ₁₄ H ₁₃ F ₂ N ₇ O
Calculated value C: 50.45, H: 3.93, N: 2.42
Actual value C: 50.55, H: 3.96, N29.33

Test example 1 (Minimum growth inhibitory concentration test)
For the compounds obtained in Examples 1 to 20 and propiconazole (PZ), a minimum growth inhibitory concentration test was performed under the following conditions using the test bacteria shown in the <Used bacteria> column by the multiple dilution method. The MIC (μg / ml) was determined. The results are shown in Tables 4-6.
<Used bacteria>
・ Four kinds of mold: Aureobasidium pullulans, Cladosporium cladosporioides, Alternaria sp., Gliocladium virens
・ Two basidiomycetes: Fomitopsis palustris, Trametes versicolor
<Culture conditions>
・ Medium: Potato dextrose agar medium ・ Culture conditions: Mold 4 types = 28 ° C., 3 days, Basidiomycetes = 26 ° C., 7 days For 2 types of basidiomycetes, sterilize each bacterium cultured on potato dextrose agar medium The whole agar medium was cut out with a cork borer, and the section was placed so that the fungus surface was in contact with the drug-containing medium and cultured.

  From the above Tables 4 to 6, it was found that they have high antibacterial activity against mold and basidiomycetes. In particular, it was found to be effective against basidiomycetes such as Trametes versicolor and Fomitopsis palustris, which decay wood and greatly deteriorate its strength. Especially, it turned out that the compound of Example 1, 9, and 17 shows an activity substantially equivalent to propiconazole (PZ) known for strong antibacterial activity with respect to this basidiomycete.

Test example 2 (preservation test)
About the compound and propiconazole (PZ) obtained in Examples 1, 9 and 17, the Japan Wood Preservation Association Standards Collection Indoor Preservative Efficacy Test Method and Performance Standards for Surface Treatment Wood Preservatives (JWPS-FW-S) An antiseptic test was conducted using a method according to .1). Weathering operation was performed and antibacterial operation was performed in 8 weeks.
<Used bacteria>
・ Oozuratake (Fomitopsis palustris)
・ Kawaratake (Trametes versicolor)
<Combination of tree species and fungi>
・ Sugi → Ozuuratake ・ Beech → Kawaratake <Test results>
The test result was expressed as an average mass reduction rate due to antibacterial operation of the treated specimen subjected to antibacterial operation. The mass reduction rate of each specimen was calculated by the following formula, and the average value was obtained.

<Performance standards>
When the average mass reduction rate of the treated specimen was less than 3%, the wood preservative was evaluated as having antiseptic performance.

  The results are shown in Table 7.

  The average mass reduction rate of the treated specimens using the compounds of Examples 1, 9, and 17 was less than 3%, and it was confirmed that the antibacterial performance was superior to that of propiconazole.

Formulation Examples 1-12
Various formulation examples containing the compounds obtained in the above examples are shown below.

Details of the components used in each formulation example are shown below.
・ IPDI polyisocyanate: modified trimethylolpropane (oil-soluble film forming component) of isophorone diisocyanate (IPDI), trade name “Takenate D-140N” (solvent substitute), manufactured by Mitsui Chemicals Polyurethane Co., Ltd. ・ P VOH: Polyvinyl alcohol (dispersion stabilizer), trade name “Kuraray Poval 217”, Kuraray Co., Ltd. Naphthalenesulfonic acid formamide condensate: anionic surfactant (dispersion stabilizer), trade name “New Calgen FS-4”, Takemoto Oil & Fat Co., Ltd./Naroacty CL100: Higher alcohol-based nonionic surfactant, Sanyo Kasei Co., Ltd./Anti-freezing agent: Propylene glycol, Asahi Glass Co., Ltd./Thickener: Sodium polyacrylate “LEOSIC 250H”, manufactured by Nippon Pure Chemical Co., Ltd., preservative: iodoacetamide, trade name “Del Top”, Nippon Envioke Karuzu Co., Ltd.
Formulation Example 1 (Oil formulation)

  0.5 parts by weight of the compound obtained in Example 8, 50 parts by weight of diisononyl adipate, 24.75 parts by weight of Alkene L (manufactured by Nippon Petrochemical Co., Ltd.), and 24.75 parts by weight of diethylene glycol monomethyl ether were added. An oil agent is prepared by uniformly dissolving.

Formulation Example 2 (Emulsification formulation)

  1.5 parts by weight of the compound obtained in Example 8, 36 parts by weight of diisononyl adipate, 15 parts by weight of NAROACTY CL100 (manufactured by Sanyo Chemical Co., Ltd.), 37.5 parts by weight of diethylene glycol monomethyl ether, rapeseed white coat oil ( An emulsion preparation is prepared by charging 10 parts by weight of HONEN CORPORATION and dissolving it uniformly.

Formulation Example 3 (Microcapsule)

  After preparing 1.125 parts by weight of the compound obtained in Example 8 and 28.875 parts by weight of diisononyl adipate, a diisononyl adipate solution containing 3.76% by weight of the compound obtained in Example 8 was prepared. An IPDI polyisocyanate (5.3 parts by weight) was blended and stirred until uniform to obtain an oil phase mixture as an oil phase component.

Next, 132.5 parts by weight of an aqueous solution as a water phase component containing 9 parts by weight of PVOH and 0.225 parts by weight of a naphthalene sulfonic acid formaldehyde condensate is blended with the above oil phase mixture, The mixture was stirred with a TK auto homomixer (manufactured by Tokushu Kika Kogyo Co., Ltd.) until dispersed as fine droplets. The rotation speed of the mixer was 2000 min ⁻¹ .

  The dispersion obtained in this way was allowed to react by dropping 0.2 parts by weight of diethylenetriamine while gently stirring in a thermostatic bath at 75 ° C. for 3 hours, whereby microcapsules enclosing the compound obtained in Example 8 ( An aqueous dispersion having an average particle size of 10 μm and a coating thickness of 0.1 μm was obtained.

  Furthermore, it can be obtained in Example 8 by blending an anti-freezing agent, a thickener, a preservative, and water into the aqueous dispersion after reaction to adjust the total weight to 225 parts by weight. A microcapsule-type wood preservative containing 0.5% by weight of the above compound was obtained.

Formulation Example 4
Using 0.5 parts by weight of the compound of Example 1, an oily preparation is obtained in the same manner as in Preparation Example 1.

Formulation Example 5
Using 1.5 parts by weight of the compound of Example 1, a preparation for emulsification is obtained in the same manner as in Preparation Example 2.

Formulation Example 6
Using 1.125 parts by weight of the compound of Example 1, a microcapsule is obtained in the same manner as in Formulation Example 1.

Formulation Example 7
Using 0.5 parts by weight of the compound of Example 9, an oily preparation is obtained in the same manner as in Preparation Example 1.

Formulation Example 8
Using 1.5 parts by weight of the compound of Example 9, a preparation for emulsification is obtained in the same manner as in Preparation Example 2.

Formulation Example 9
Using 1.125 parts by weight of the compound of Example 9, a microcapsule is obtained in the same manner as in Formulation Example 1.

Formulation Example 10
Using 0.5 parts by weight of the compound of Example 17, an oily preparation is obtained in the same manner as in Preparation Example 1.

Formulation Example 11
Using 1.5 parts by weight of the compound of Example 17, a preparation for emulsification is obtained in the same manner as in Preparation Example 2.

Formulation Example 12
Using 1.125 parts by weight of the compound of Example 17, microcapsules are obtained in the same manner as in Formulation Example 1.

  Formulation Examples 1, 4, 7, and 10 remain as undiluted solutions, Formulation Examples 2, 5, 8, and 11 are diluted with 3 times water, Formulation Examples 3, 6, 9, and 12 are diluted with 4 times water. use.

Claims (6)

Formula (I):

(In the formula, R ¹ and R ² are the same or different and each represents a hydrogen atom, a halogen atom or a halogenated alkoxy group, except that R ¹ and R ² are both hydrogen atoms. R ³ is an alkyl group, and R ⁴ is It represents a hydrogen atom or a group represented by the formula: —CH ₂ CH ₂ — in which R ³ and R ⁴ are bonded.

Represents an aromatic heterocyclic group containing 3 or 4 nitrogen atoms which may have a substituent. The wood preservative which contains the compound represented by this as an active ingredient. The substituted phenyl group bonded to the 2-position carbon in the compound represented by the general formula (I) is represented by the formula (II):

(In the formula, R ¹ and R ² are the same as above.)
The wood preservative according to claim 1, which is a group represented by: In the formula (II), the combination of R ¹ and R ² (R ¹ , R ² ) is (fluorine atom, fluorine atom), (fluorine atom, hydrogen atom), (chlorine atom, hydrogen atom), (hydrogen atom, The wood preservative according to claim 2, which is (fluorine atom) or (trifluoromethyl, hydrogen atom). Said substituent:

The wood preservative according to any one of claims 1 to 3, which is an aromatic hetero 5-membered ring group in which at least two of the three or four nitrogen atoms constituting the ring A are adjacent to each other.   A preparation comprising the wood preservative according to any one of claims 1 to 4 and a carrier.   A method for preserving wood, comprising treating target wood with the preparation according to claim 5.