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    • 专利摘要:
    In the method for producing hydroxylactones of the present invention, an unsaturated carboxylic acid or ester thereof having a non-conjugated double bond with respect to a carboxyl group is (i) in the presence of a metal compound containing a metal element selected from W, Mo, V and Mn. A corresponding hydroxide which reacts with hydrogen peroxide or (ii) with a peroxide comprising the metal element to which a hydroxyl group is bonded to one carbon atom constituting the double bond, and cyclized at the other carbon atom site; Produce hydroxylactone. As the metal compound, for example, a compound selected from oxides, oxo acids and salts thereof can be used. Moreover, (beta), (gamma)-unsaturated carboxylic acid, (gamma), (delta)-unsaturated carboxylic acid, (delta), (epsilon)-unsaturated carboxylic acid etc. are mentioned as said unsaturated carboxylic acid, for example. According to this method, hydroxylactones can be produced at low cost with high yield.
    公开号:KR20030029627A
    申请号:KR10-2003-7000805
    申请日:2001-07-18
    公开日:2003-04-14
    发明作者:야스따까 이시이；다쯔야 나까노；게이조 이노우에
    申请人:다이셀 가가꾸 고교 가부시끼가이샤；
    IPC主号:
    专利说明:

    Process for Producing Hydroxylactone
    [2] Lactones having a hydroxyl group are compounds useful as raw materials for functional polymers such as photosensitive resins, as well as raw materials for pharmaceuticals, pesticides, and other fine chemicals.
    [3] As a method for producing lactones having hydroxyl groups, Journal of Molecular Catalysis A: Chemical 142 (1999) 333-338 is present in the presence of methyltrioxolenium, β, γ-unsaturated. A method of reacting carboxylic acid, γ, δ-unsaturated carboxylic acid or δ, ε-unsaturated carboxylic acid with hydrogen peroxide to obtain corresponding hydroxylactones has been proposed. However, this method is not industrially advantageous because it uses expensive and toxic rhenium.
    [1] The present invention relates to a method for producing hydroxylactones, and more particularly, to a method for producing corresponding hydroxylactones from an unsaturated carboxylic acid or ester thereof having a non-conjugated double bond to a carboxyl group.
    [4] It is therefore an object of the present invention to provide an industrially advantageous production method which can produce hydroxylactones inexpensively at high yields.
    [5] MEANS TO SOLVE THE PROBLEM As a result of earnestly examining in order to achieve the said objective, when the unsaturated carboxylic acid which has a non-conjugated double bond or its ester, and a specific compound are made to react with a carboxyl group, the present inventors can manufacture corresponding hydroxy lactones cheaply and efficiently. It was found that the present invention was completed.
    [6] That is, the present invention reacts an unsaturated carboxylic acid or ester thereof having a non-conjugated double bond with a carboxyl group with hydrogen peroxide in the presence of a metal compound comprising a metal element selected from (i) W, Mo, V and Mn. Or (ii) reacting with a peroxide comprising the metal element to produce a corresponding hydroxylactone in which a hydroxyl group is bonded to one carbon atom constituting the double bond and cyclized at another carbon atom moiety. Provided are methods for producing hydroxylactones.
    [7] As the metal compound, for example, one or more compounds selected from oxides, oxo acids and salts thereof can be used. The unsaturated carboxylic acid includes, for example, β, γ-unsaturated carboxylic acid, γ, δ-unsaturated carboxylic acid or δ, ε-unsaturated carboxylic acid.
    [8] In addition, in the present specification, hydroxylactones include not only a compound in which a hydroxyl group is directly bonded to a lactone ring, but also a compound in which a substituent including a hydroxyl group is bonded to a lactone ring. In addition, "peroxide" is used in a broad sense to include peroxoic acid or salts thereof, peracids or salts thereof, in addition to narrow peroxides and hydroperoxides.
    [9] <Best Mode for Carrying Out the Invention>
    [10] [temperament]
    [11] The unsaturated carboxylic acid or ester thereof used as the reaction raw material (substrate) in the present invention is not particularly limited as long as it is a carboxylic acid or ester thereof having a non-conjugated double bond to a carboxyl group.
    [12] As a representative example of the unsaturated carboxylic acid used as a substrate, β, γ-unsaturated carboxylic acid represented by the following formula (1a), γ, δ-unsaturated carboxylic acid represented by the formula (1b), δ, ε- represented by formula (1c) Unsaturated carboxylic acid etc. are mentioned.
    [13]
    [14]
    [15]
    [16] Wherein, R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 17 , R 18 , R 19 , R 20 , and R 21 are the same or different and represent a hydrogen atom or an organic group. In R 1 to R 5 of Formula 1a, R 7 to R 12 of Formula 1b, or R 13 to R 21 of Formula 1c, two or more groups may combine with each other to form a ring, such as an adjacent carbon atom or carbon chain. Can be.
    [17] It will not specifically limit, if it is a group which does not inhibit reaction as said organic group. For example, as said organic group, a halogen atom, a hydrocarbon group, a heterocyclic group, a substituted oxycarbonyl group (alkoxycarbonyl group, aryloxycarbonyl group, aralkyloxycarbonyl group, cycloalkyloxycarbonyl group, etc.), carboxyl group, substituted or unsubstituted carbamoyl group (N-substituted or unsubstituted amide group), cyano group, nitro group, sulfuric acid group (sulfonic acid group, sulfinic acid group), sulfuric acid ester group (sulfonic acid ester group, sulfinic acid ester group), acyl group, hydroxyl group, alkoxy group, N-substituted or unsubstituted amino group, etc. can be illustrated. The carboxyl group, hydroxyl group, and amino group may be protected with conventional protecting groups.
    [18] The halogen atom includes fluorine, chlorine, bromine and iodine atoms. The hydrocarbon group includes an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, and an aromatic hydrocarbon group. As the aliphatic hydrocarbon group, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, t-butyl, pentyl, hexyl, octyl, decyl, tetradecyl, hexadecyl, octadecyl, allyl group, etc. And linear or branched aliphatic hydrocarbon groups (alkyl groups, alkenyl groups and alkynyl groups) having 1 to 20 carbon atoms (preferably 1 to 10, more preferably 1 to 6).
    [19] Examples of the alicyclic hydrocarbon group include about 3 to 20 carbon atoms (preferably 3 to 15 carbon atoms) such as chloropropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclohexenyl, cyclooctyl, cyclodecyl, and cyclododecyl groups. The alicyclic hydrocarbon group (cycloalkyl group, cycloalkenyl group, etc.) etc. are mentioned. As an aromatic hydrocarbon group, C6-C14 aromatic hydrocarbon groups, such as a phenyl and a naphthyl group, etc. are mentioned, for example.
    [20] Such hydrocarbon groups can be protected with various substituents, for example, halogen atoms (fluorine, chlorine, bromine, iodine atoms), oxo groups, hydroxyl groups that can be protected with protecting groups, hydroxymethyl groups that can be protected with protecting groups, protecting groups. Carboxyl group, substituted oxycarbonyl group, substituted or unsubstituted carbamoyl group, nitro group, acyl group, cyano group, alkyl group (e.g., C 1-4 alkyl group such as methyl, ethyl group) ), A cycloalkyl group, an aryl group (for example, phenyl, naphthyl group, etc.), a heterocyclic group, and the like. As said protecting group, the protecting group conventional in the field of organic synthesis can be used.
    [21] The heterocycle constituting the heterocyclic group includes an aromatic heterocycle and a nonaromatic heterocycle. As such a heterocycle, the 5- or 6-membered heterocycle etc. which contain 1 or more types of atoms chosen from an oxygen atom, a sulfur atom, and a nitrogen atom as a hetero atom are mentioned, for example. The heterocycle may be a condensed ring and may also have a substituent (eg, a group such as a substituent that the hydrocarbon group may have).
    [22] Examples of the alkoxycarbonyl group include C 1-6 alkoxycarbonyl groups such as methoxycarbonyl and ethoxycarbonyl groups. The aryloxycarbonyl group includes, for example, a phenyloxycarbonyl group and the like, and the aralkyloxycarbonyl group includes, for example, a benzyloxycarbonyl group and the like. Examples of the cycloalkyloxycarbonyl group include cyclopentyloxycarbonyl, cyclohexyloxycarbonyl group, and the like. Examples of the substituted carbamoyl group include N-methylcarbamoyl, N, N-dimethylcarbamoyl group and the like. The sulfonic acid ester group includes sulfonic acid C 1-4 alkyl ester groups such as methyl sulfonate and ethyl sulfonate. The sulfinic acid ester groups include sulfinic acid C 1-4 alkyl ester groups such as methyl sulfinate and ethyl sulfinate. As an acyl group, aliphatic acyl groups (for example, C2-7 aliphatic acyl group etc.), such as an acetyl and a propionyl group, aromatic acyl groups, such as a benzoyl group, etc. are mentioned. As an alkoxy group, C1-C6 alkoxy groups, such as a methoxy, ethoxy, propoxy, butoxy group, etc. are mentioned, for example. As an N-substituted amino group, N, N-dimethylamino, N, N-diethylamino, a piperidino group, etc. are contained, for example.
    [23] Preferred organic groups include hydrogen atoms; C 1-10 alkyl groups (particularly C 1-4 alkyl groups) such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, t-butyl, pentyl and hexyl groups; C 3-15 alicyclic hydrocarbon groups such as cyclopentyl and cyclohexyl group; Aromatic hydrocarbon groups, such as a phenyl group, etc. are contained.
    [24] In R 1 to R 5 of Formula 1a, Formula 1b R 7 to R 12 , or R 13 to R 21 of Formula 1c, two or more groups are bonded to each other to form a ring with an adjacent carbon atom or carbon chain as cyclo A cycloalkane ring or cycloalkene ring of about 3 to 20 members, such as a propane ring, a cyclobutane ring, a cyclopentane ring, a cyclopentene ring, a cyclohexane ring, a cyclohexene ring, a cyclooctane ring, and a cyclododecane ring: a norbornane ring And a temporary exchange such as a norbornene ring, adamantane ring, decalin ring, perhydrofluorene ring and tricyclo [5.2.1.0 2,6 ] decane ring.
    [25] Such rings may have a variety of substituents (eg, the same groups as the substituents the hydrocarbon group may have), and other rings (non-aromatic rings or aromatic rings) may condense.
    [26] As a specific example of the (beta), (gamma)-unsaturated carboxylic acid represented by the said Formula (1a), 3-butene acid, 3-pentenoic acid, 3-hexenoic acid, 3-methyl-3- butenoic acid, 2-methyl-3, for example. -Butene acid, 2,2-dimethyl-3-butene acid, etc. are mentioned.
    [27] Specific examples of the γ, δ-unsaturated carboxylic acid represented by the formula (1b) include 4-pentenoic acid, 4-hexenoic acid, 4-heptenic acid, 4-methyl-4-pentenoic acid, 3-methyl-4- Pentenoic acid, 3,3-dimethyl-4-pentenoic acid, 2-methyl-4-pentenoic acid, 2,2-dimethyl-4-pentenoic acid, 2,3-dimethyl-4-pentenoic acid, cyclopentene-3- Acetic acid, cyclohexene-3-acetic acid, 5-norbornene-2-carboxylic acid, etc. are mentioned.
    [28] As a specific example of the (delta), (epsilon)-unsaturated carboxylic acid represented by General formula (1c), for example, 5-hexenoic acid, 5-heptenic acid, 5-octenic acid, 5-methyl-5-hexenoic acid, 4-methyl-5- Hexenoic acid, 4,4-dimethyl-5-hexenoic acid, 3-methyl-5-hexenoic acid, 3,3-dimethyl-5-hexenoic acid, 2-methyl-5-hexenoic acid, 2,2-dimethyl-5 -Hexenoic acid, 3,4-dimethyl-5-hexenoic acid, 2,4-dimethyl-5-hexenoic acid, 2,3-dimethyl-5-hexenoic acid, 2,3,4-trimethyl-5-hexenoic acid, etc. Can be mentioned.
    [29] As ester of the said unsaturated carboxylic acid, For example, alkyl ester, such as methyl ester, ethyl ester, propyl ester, isopropyl ester, butyl ester, isobutyl ester, s-butyl ester, t-butyl ester (for example, C 1-4 alkyl esters); Cycloalkyl esters such as cyclohexyl ester; Aryl esters such as phenyl esters; Aralkyl esters, such as benzyl ester, etc. are mentioned, It is not limited to this.
    [30] [Metal compound]
    [31] In the present invention, the unsaturated carboxylic acid or ester thereof is reacted with hydrogen peroxide in the presence of (i) a metal compound comprising a metal element selected from W, Mo, V and Mn, or (ii) comprising the metal element. React with peroxide.
    [32] The metal compound in the above (i) is not particularly limited as long as it is a compound containing a metal element selected from W, Mo, V, and Mn. For example, an oxide, an oxo acid containing the metal element, a salt thereof, a sulfide, Halides, oxyhalides, borides, carbides, silicides, nitrides, phosphides, peroxides, complexes (inorganic complexes and organic complexes), organometallic compounds and the like. These metal compounds can be used individually or in combination of 2 or more types.
    [33] Examples of the oxide include tungsten oxide (WO 2 , WO 3, etc.), molybdenum oxide (MoO 2 , MoO 3, etc.), vanadium oxide (VO, V 2 O 3 , VO 2 , V 2 O 5, etc.) and oxidation Manganese (MnO, Mn 2 O 3 , Mn 3 O 4 , MnO 2 , Mn 2 O 7, etc.), a composite oxide containing the metal, and the like.
    [34] Examples of oxo acids include isopoly acids such as isopolytungstic acid, isopolymolybdate acid and isopolyvanadium acid, in addition to tungstic acid, molybdic acid, vanadic acid and manganic acid; Heteropoly acid which consists of said metal element, such as phosphotungstic acid, silicon tungstic acid, phosphomolybdic acid, silicon molybdic acid, and invanad molybdic acid, and other metal elements, etc. is contained. As another metal element etc. in heteropoly acid, phosphorus or silicon, especially phosphorus is preferable.
    [35] As a salt of oxo acid, Alkali metal salts, such as the sodium salt and potassium salt of the said oxo acid; Alkaline earth metal salts such as magnesium salts, calcium salts and barium salts, and ammonium salts; Transition metal salts; and the like. The salt of oxo acid (for example, a salt of heteropoly acid) may be a salt in which a part of the hydrogen atoms corresponding to the cation is replaced with another cation.
    [36] As the peroxide, peroxide, hydroperoxide, peroxoic acid (e.g., peroxotungstic acid, peroxomolybdic acid, peroxovanadium acid, etc.), salts of peroxoic acid (alkali metal salts of the peroxoic acid, alkaline earth) Metal salts, ammonium salts, transition metal salts and the like), peracids (permanganic acid and the like), and salts of peracids (alkali metal salts of the peracids, alkaline earth metal salts, ammonium salts, transition metal salts, and the like).
    [37] The amount of the metal compound used is, for example, about 0.0001 to 2 moles, preferably about 0.0005 to 0.5 moles, and more preferably about 0.001 to 0.2 moles to 1 mole of the unsaturated carboxylic acid or ester used in the reaction.
    [38] The active species in the case of (i) is assumed to be a peroxide or peroxy radical containing the metal.
    [39] The same thing as the above can be used as a peroxide in said (ii). A peroxide can be used individually or in combination of 2 or more types. The amount of peroxide used is, for example, about 0.8 to 2 moles, preferably about 0.9 to 1.5 moles, and more preferably about 0.95 to 1.2 moles, per mole of unsaturated carboxylic acid or ester used in the reaction.
    [40] Hydrogen Peroxide
    [41] Pure hydrogen peroxide can be used as the hydrogen peroxide, but in terms of handling, it is usually used in a form diluted in a suitable solvent such as water (for example, 30 wt% hydrogen peroxide).
    [42] The usage-amount of hydrogen peroxide is about 0.9-5 mol, Preferably it is about 0.9-3 mol, More preferably, it is about 0.95-2 mol with respect to 1 mol of unsaturated carboxylic acids or ester used for reaction.
    [43] [reaction]
    [44] The reaction is carried out in the presence or absence of a solvent. As said solvent, For example, Alcohol, such as t-butyl alcohol; Halogenated hydrocarbons such as chloroform, dichloromethane and 1,2-dichloroethane; Aromatic hydrocarbons such as benzene; Aliphatic hydrocarbons such as hexane, heptane and octane; Alicyclic hydrocarbons such as cyclohexane; Amides such as N, N-dimethylformamide and N, N-dimethylacetamide; Nitriles such as acetonitrile, propionitrile and benzonitrile; Chain or cyclic ethers such as ethyl ether and tetrahydrofuran; Esters such as ethyl acetate; Organic acids such as acetic acid; Water and the like. These solvent are used 1 type or in mixture of 2 or more types.
    [45] The reaction temperature can be appropriately selected in consideration of the reaction rate and the reaction selectivity, but is generally about 0 to 100 ° C, preferably about 10 to 60 ° C. The reaction can be carried out by any method such as batch type, semi-batch type, or continuous type.
    [46] The reaction produces a hydroxyl group bonded to one carbon atom constituting the double bond of an unsaturated carboxylic acid used as a raw material and cyclized at the other carbon atom moiety. In this reaction, epoxidation of a double bond occurs first, followed by an intramolecular cyclization reaction accompanied by ring opening of an epoxy ring, and it is estimated that a corresponding hydroxylactone is produced.
    [47] At this time, which of the two carbon atoms constituting the double bond is cyclized at the site of the carbon atom is determined by the electrical properties, the volume, the three-dimensional regulation of the substituents bonded to the carbon atom, the stability of the resulting lactone, and the like. In addition, when using as a substrate the unsaturated carboxylic acid or its ester, such as having a ring containing two or more carbon atoms from the carbon atom at the α-position of the carboxyl group to the far carbon atom constituting the double bond, The polycyclic compound which the ring and the lactone ring condensed can be produced.
    [48] More specifically, β-hydroxy-γ-butyrolactone derivatives or the like represented by the following general formula (2a) are generally produced from the β, γ-unsaturated carboxylic acid or esters thereof represented by the general formula (1a). For example, when 3-butene acid or its ester is used as a raw material, β-hydroxy-γ-butyrolactone (4-hydroxydihydrofuran-2-one) is obtained in high yield.
    [49]
    [50] In formula, R <1> , R <2> , R <3> , R <4> is the same as the above.
    [51] Moreover, the gamma -hydroxymethyl- gamma -butyrolactone derivative represented by the following general formula (2b-1) is normally produced from (gamma), (delta)-unsaturated carboxylic acid or its ester represented by the said Formula (1b), Thus, the γ-hydroxy-δ-valerolactone derivative represented by the formula (2b-2) is produced.
    [52]
    [53]
    [54] In formulas, R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 are the same as above.
    [55] For example, γ-hydroxymethyl-γ-butyrolactone (5-hydroxymethyldihydrofuran-2-one) from 4-pentenoic acid or its ester is 2, from cyclopentene-3-acetic acid. 3-dihydroxycyclopentane acetic acid- [gamma] -lactone is also 5,6-dihydroxybicyclo [2.2.1] octane-2-carboxylic acid- from 5-norbornene-2-carboxylic acid. γ-lactone (5-hydroxy-2,6-norbornanecarbolactone = 5-hydroxy-3-oxatricyclo [4.2.1.O 4,8 ] -nonan-2-one), respectively, is high Produced in yield.
    [56] Further, from the δ, ε-unsaturated carboxylic acid represented by the general formula (1c) or its ester, the δ-hydroxymethyl-δ-valerolactone derivative represented by the following general formula (2c) and ε-caprolactone depending on the type of substrate Derivatives are produced. For example, δ-hydroxymethyl-δ-valerolactone (6-hydroxymethyldetrahydropyran-2-one) is obtained in high yield from 5-hexenoic acid.
    [57]
    [58] Wherein, R 13, R 14, R 15, R 16, R 17, R 18, R 19, R 20, R 21 are as defined above.
    [59] In addition, when ester of unsaturated carboxylic acid is used as a substrate, the alcohol corresponding to ester is by-produced. The reaction product can be easily separated and purified by conventional separation means, for example, separation means such as filtration, concentration, distillation, extraction, crystallization, recrystallization, column chromatography, or by combining them.
    [62] EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
    [63] <Example 1>
    [64] In a mixture of 1.38 g (10 mmol) of 5-norbornene-2-carboxylic acid, 25 mg (0.1 mmol) of tungstic acid and 15 mL of t-butyl alcohol, 2 mL of 30 wt% hydrogen peroxide solution was added dropwise while stirring at room temperature. And it stirred at 40 degreeC for 3 hours. As a result, 5-hydroxy-2,6-norbornanecarbolactone (= 5-hydroxy-3-oxatricyclo [4.2.1.0 4,8 ] nonan-2-one) represented by the following formula was obtained. It was produced at 82%. The conversion rate of 5-norbornene-2-carboxylic acid was 95%.
    [65]
    [66] <Example 2>
    [67] In a mixture of 1.38 g (10 mmol) of 5-norbornene-2-carboxylic acid, 16.2 mg (0.1 mmol) of molybdate acid and 15 ml of t-butyl alcohol, 2 ml of 30 wt% hydrogen peroxide solution was added dropwise at room temperature with stirring. And it stirred at 40 degreeC for 5 hours. As a result, 5-hydroxy-2,6-norbornanecarbolactone was produced in yield 85%. The conversion rate of 5-norbornene-2-carboxylic acid was 99%.
    [68] <Example 3>
    [69] Into a mixed solution of 1.38 g (10 mmol) of 5-norbornene-2-carboxylic acid, 50 mg (0.2 mmol) of tungstic acid and 15 mL of chloroform, 2 mL of 30% by weight aqueous hydrogen peroxide was added dropwise at room temperature while stirring. It stirred for 5 hours at room temperature. As a result, 5-hydroxy-2,6-norbornanecarbolactone was produced with a yield of 5%. The conversion rate of 5-norbornene-2-carboxylic acid was 11%.
    [70] <Example 4>
    [71] Into a mixed solution of 0.86 g (10 mmol) of 3-butene acid, 25 mg (0.1 mmol) of tungstic acid and 15 mL of t-butyl alcohol, 2 mL of 30% by weight aqueous hydrogen peroxide was added dropwise at room temperature with stirring, and further, at 70 ° C. Stirred for time. As a result, β-hydroxy-γ-butyrolactone was produced in 91% yield.
    [72] Example 5
    [73] To a mixture of 1.00 g (10 mmol) of 4-pentenoic acid, 25 mg (0.1 mmol) of tungstic acid and 15 ml of t-butyl alcohol, 2 ml of 30 wt% aqueous hydrogen peroxide was added dropwise at room temperature with stirring, and further at 10 ° C at 10 ° C. Stirred for time. As a result, γ-hydroxymethyl-γ-butyrolactone was produced in a yield of 88%.
    [74] <Example 6>
    [75] To a mixture of 1.12 g (10 mmol) of 5-hexenoic acid, 25 mg (0.1 mmol) of tungstic acid and 15 mL of t-butyl alcohol, 2 mL of 30 wt% aqueous hydrogen peroxide was added dropwise at room temperature with stirring, and further, at 70 ° C. Stirred for time. As a result, δ-hydroxymethyl-δ-valerolactone was produced in a yield of 72%.
    [76] <Example 7>
    [77] In a mixture of 13.8 g (100 mmol) of 5-norbornene-2-carboxylic acid, 125 g (5 mmol) of tungstic acid and 60 ml of water, 30% by weight of hydrogen peroxide 14.7 while controlling the internal temperature to 43 to 47 ° C. g (130 mmol) was added dropwise for 30 minutes, and then stirred at 50 ° C for 4.5 hours. The reaction mixture was allowed to cool to room temperature, 10% by weight aqueous sodium sulfite solution was added, and then concentrated by rotary evaporation. Ethyl acetate and 10% by weight aqueous sodium carbonate solution were added to the concentrated solution for separation. The ethyl acetate layer was concentrated and hexane was added. The precipitated crystals were filtered and dried to obtain 5-hydroxy-2,6-norbornanecarbolactone in a yield of 52%.
    [78] <Example 8>
    [79] 43-47 ° C in a mixture of 6.9 g (50 mmol) of 5-norbornene-2-carboxylic acid, 0.94 g (3.76 mmol) of tungstic acid, 0.92 g (11.2 mmol) of sodium acetate and 20 g of t-butyl alcohol 6.5g of 30 weight% hydrogen peroxide water was dripped at 30 minutes, and it stirred at 50 degreeC after that for 5.5 hours. As a result, 5-hydroxy-2,6-norbornanecarbolactone was produced in 26% yield. The conversion rate of 5-norbornene-2-carboxylic acid was 52%.
    [60] The hydroxylactones thus obtained can be used as raw materials for functional materials such as photosensitive resins, as well as raw materials for fine chemicals such as medicines and pesticides.
    [61] According to the method of the present invention, since hydroxylactones can be produced inexpensively at a high yield, it is very advantageous as a method for producing industrial hydroxylactones.
    权利要求:
    Claims (3)
    [1" claim-type="Currently amended] Reacting an unsaturated carboxylic acid or ester thereof having a non-conjugated double bond to a carboxyl group with hydrogen peroxide in the presence of a metal compound comprising a metal element selected from (i) W, Mo, V and Mn, or (ii Reacting with a peroxide containing the metal element, to which a hydroxyl group is bonded to one carbon atom constituting the double bond and to produce a corresponding hydroxylactone cyclized at the other carbon atom moiety. The manufacturing method of hydroxy lactones which do it.
    [2" claim-type="Currently amended] The method for producing hydroxylactones according to claim 1, wherein the metal compound is at least one selected from oxides, oxo acids and salts thereof.
    [3" claim-type="Currently amended] The method for producing hydroxylactones according to claim 1, wherein the unsaturated carboxylic acid is β, γ-unsaturated carboxylic acid, γ, δ-unsaturated carboxylic acid or δ, ε-unsaturated carboxylic acid.
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-07-19|Priority to JPJP-P-2000-00219706
    2000-07-19|Priority to JP2000219706
    2001-07-18|Application filed by 다이셀 가가꾸 고교 가부시끼가이샤
    2001-07-18|Priority to PCT/JP2001/006200
    2003-04-14|Publication of KR20030029627A
    2007-07-18|Application granted
    2007-07-18|Publication of KR100740033B1
    优先权:
    申请号 | 申请日 | 专利标题
    JPJP-P-2000-00219706|2000-07-19|
    JP2000219706|2000-07-19|
    PCT/JP2001/006200|WO2002006262A1|2000-07-19|2001-07-18|Process for producing hydroxylactone|
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