WO2015163370A1 - ビススピロノルボルナン構造を有する脂環式ジオール化合物、その製造方法およびその使用 - Google Patents
ビススピロノルボルナン構造を有する脂環式ジオール化合物、その製造方法およびその使用 Download PDFInfo
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- WO2015163370A1 WO2015163370A1 PCT/JP2015/062249 JP2015062249W WO2015163370A1 WO 2015163370 A1 WO2015163370 A1 WO 2015163370A1 JP 2015062249 W JP2015062249 W JP 2015062249W WO 2015163370 A1 WO2015163370 A1 WO 2015163370A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/64—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of functional groups containing oxygen only in singly bound form
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/385—Saturated compounds containing a keto group being part of a ring
- C07C49/487—Saturated compounds containing a keto group being part of a ring containing hydroxy groups
- C07C49/507—Saturated compounds containing a keto group being part of a ring containing hydroxy groups polycyclic
- C07C49/513—Saturated compounds containing a keto group being part of a ring containing hydroxy groups polycyclic a keto group being part of a condensed ring system
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/12—Acetic acid esters
- C07C69/16—Acetic acid esters of dihydroxylic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/199—Acids or hydroxy compounds containing cycloaliphatic rings
Definitions
- the present invention particularly relates to an alicyclic diol compound that is a polyfunctional compound that can be used in a polymer material via a condensation reaction, and that provides a polymer material having excellent transparency and heat resistance, a method for producing the same, and It relates to a production intermediate. Moreover, since the alicyclic diol compound regarding this invention can be chemically modified, it can be used also as a reaction intermediate of various compounds.
- Polyethylene terephthalate is a polyester resin that is excellent in transparency, mechanical strength, electrical insulation and chemical resistance, and is widely used for films, hollow containers and the like.
- polyethylene terephthalate does not necessarily have a sufficiently high glass transition temperature.
- studies have been made to improve heat resistance such as an increase in glass transition temperature by using a diol having an alicyclic skeleton as a constituent unit (see, for example, Patent Documents 1 and 2). Although these attempts have achieved certain results, further improvements are expected.
- tetracarboxylic acid having a bisspironorbornane structure as a compound having an alicyclic structure that can be used for the production of polyimide-based materials having excellent light transmittance and heat resistance. And its derivatives are disclosed, but no diol compound is disclosed (Patent Document 3).
- An object of the present invention is mainly to provide an alicyclic diol compound that can be effectively used for providing a polymer material excellent in light transmittance and heat resistance, a production method thereof, and a production intermediate.
- the present inventors have introduced a symmetry to the alicyclic structure as the basic skeleton, while at the same time introducing a carbon-carbon single bond that may cause free rotation.
- the alicyclic diol compound obtained by exclusion can be effectively used for the production of extremely excellent polymer materials in both light transmittance and heat resistance, and completed the present invention It came to do.
- the first of the present invention relates to an alicyclic diol compound having a bisspirononorbornane structure represented by the following general formula (1).
- R 1 and R 2 are —OH, the other is —H, one of R 3 and R 4 is —OH, the other is —H, and R 5 And R 6 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n represents an integer of 2 to 5.
- the fourth aspect of the present invention is that diacetoxylation is carried out by adding acetic acid to two carbon-carbon unsaturated bonds in a compound having a bisspironorbornene structure represented by the following general formula (2).
- the alicyclic diacetoxy compound represented by 3) is obtained, and the acetoxy group in the compound is hydrolyzed to obtain the alicyclic diol compound having a bisspironorbornane structure represented by the following general formula (1).
- the present invention relates to a method for producing an alicyclic diol compound having a bisspironorbornane structure represented by the following general formula (1).
- R 1 and R 2 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n is 2 to 5) Indicates an integer.
- R 1 and R 2 are an acetoxy group, the other is —H
- one of R 3 and R 4 is an acetoxy group, the other is —H
- R 5 And R 6 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n represents an integer of 2 to 5.
- R 1 and R 2 is —OH and the other is —H
- R 3 and R 4 is —OH and the other —H
- R 5 , R 6 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom
- n represents an integer of 2 to 5.
- the seventh of the present invention relates to an alicyclic diacetoxy compound represented by the following general formula (3).
- R 1 and R 2 are an acetoxy group, the other is —H
- one of R 3 and R 4 is an acetoxy group, the other is —H
- R 5 And R 6 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n represents an integer of 2 to 5.
- borane is added to two carbon-carbon unsaturated bonds in a compound having a bisspirornorbornene structure represented by the following general formula (2) to hydroborate, and the following general formula ( 4)
- An alicyclic diboron compound represented by the following general formula (1) is obtained by oxidizing the diboron group in the compound and obtaining an alicyclic diol compound represented by the following general formula (1).
- the present invention relates to a production method having a bisspironorbornane structure represented by the following general formula (1).
- R 1 and R 2 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n is 2 to 5) Indicates an integer.
- R 1 and R 2 are a —BR 2 group (R is an alkyl group or —H), the other is —H, and one of R 3 and R 4 is — BR 2 group (R is an alkyl group or —H), the other is —H, and R 5 and R 6 are each independently selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom. And n represents an integer of 2 to 5.
- R 1 and R 2 is —OH and the other is —H
- R 3 and R 4 is —OH and the other —H
- R 5 , R 6 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom
- n represents an integer of 2 to 5.
- the thirteenth aspect of the present invention relates to a method for producing an alicyclic diol compound according to any one of the tenth to twelfth aspects of the present invention, wherein an oxidation reaction is performed using a base and an oxidizing agent.
- the fourteenth aspect of the present invention relates to the use of the alicyclic diol compound according to any one of the first to third aspects of the present invention as a polymer material monomer.
- the fourteenth aspect of the present invention relates to a monomer for producing a polymer material comprising the alicyclic diol compound according to any one of the first to third aspects of the present invention.
- an alicyclic diol compound that can be effectively used for providing a polymer material excellent in light transmittance and heat resistance, a method for producing the alicyclic diol compound, and a production intermediate.
- the alicyclic structure as a basic skeleton has a bisspironorbornane structure and has symmetry, but may cause free rotation. It is useful as a production monomer for a polymer material that does not have a carbon-carbon single bond and has high transparency and heat resistance. Also, compared with other polyfunctional compounds used as heat-resistant polymer materials, it has an appropriate size as a monomer molecule, solubility in an organic solvent, and a process for producing the polymer material Are easy to handle and useful. Moreover, these compounds are useful also in the field
- FIG. 2 is a chart showing an IR spectrum of an alicyclic diol compound of the chemical formula (7) obtained in Example 1.
- FIG. It is a chart showing a 1 H-NMR (CD 3 OD ) spectrum of the alicyclic diol compound of formula obtained in Example 1 (7).
- 2 is a chart showing an FD-MS spectrum of an alicyclic diol compound represented by chemical formula (7) obtained in Example 1.
- FIG. It is a perspective view of the pipe
- FIG. 2 is a 1 H-NMR spectrum (DMSO-d 6 ) of a cyclopentanone bisspironorbornene diacetoxy compound of the chemical formula (9) obtained in Example 2.
- the alicyclic diol compound according to the present invention is a cycloalkanone bisspironorbornane diol compound represented by the following general formula (1).
- R 1 and R 2 are —OH (hydroxy group), the other is —H (hydrogen atom), and one of R 3 and R 4 is —OH (hydroxy Group), the other is —H (hydrogen atom), and R 5 and R 6 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, and a fluorine atom, n represents an integer of 2 to 5.
- the alicyclic diol compound according to the present invention has, as a basic structure, a bisspironorbornane structure having a norbornane ring at the symmetrical position of cycloalkanone, strong symmetry, and no free-rotating carbon-carbon bond. Have. To date, there are no known production examples of alicyclic diol compounds having the basic structure.
- the general formula (1) collectively represents a plurality of isomers resulting from the conformational relationship between the cycloalkanone ring and the norbornane ring, and the norbornane ring and the hydroxy group.
- the compound (constituent monomer) has a bulky structure than other compounds (constituent monomer) constituting the polymer material, or when the solubility in the reaction system solvent is poor, these compounds are contained in the polymer material. It is also known that it may not be properly captured.
- these problems are arranged in a symmetrical structure with an alicyclic structure having a carbon number similar to the aromatic ring in the aromatic compound (monomer) contained in the heat-resistant polymer material.
- these problems are solved by connecting them through spiro bonds that cannot cause free rotation.
- heat resistance is improved by the formation of hydrogen bonds within the polymer chain molecule and between the polymer molecule chains.
- the alicyclic diol compound of the present invention is useful as a monomer for a polymer material, and particularly useful as a monomer for producing a polymer material having a high degree of transparency and heat resistance.
- the alkyl group that can be selected as R 5 or R 6 in the general formula (1) is an alkyl group having 1 to 10 carbon atoms.
- the number of carbon atoms of the alkyl group that can be selected as R 5 or R 6 is preferably 1 to 6 from the viewpoint of obtaining higher heat resistance when the polyester is produced. It is more preferably 1 to 5, more preferably 1 to 4, and particularly preferably 1 to 3.
- such an alkyl group that can be selected as R 5 or R 6 may be linear or branched.
- R 5 and R 6 in the general formula (1) are each independently a hydrogen atom, a methyl group, an ethyl group, or n-, from the viewpoint that higher heat resistance can be obtained when a polyester is produced.
- a propyl group and an isopropyl group are more preferable, and a hydrogen atom and a methyl group are particularly preferable.
- R 5 and R 6 in such a formula may be the same or different from each other, but are the same from the viewpoint of ease of purification and the like. Is preferred.
- n represents an integer of 2 to 5.
- n represents an integer of 2 to 5.
- n exceeds the upper limit, it becomes difficult to purify the bisspironorbornanes represented by the general formula (1).
- manufacture of the bis spirono norbornane represented by the said General formula (1) will become difficult.
- a value of n is preferably 2 or 3 and particularly preferably 2 from the viewpoint of the structural stability of the bisspirononorbornane compound represented by the general formula (1).
- R 1 and R 2 in the general formula (1) one of them is —OH (hydroxy group) and the other (the other) is —H (hydrogen atom).
- R 3 and R 4 in the general formula (1) one of them is —OH (hydroxy group) and the other (the other) is —H (hydrogen atom).
- the compound represented by the general formula (1) is a diol compound derived from the substituents of R 1 , R 2 , R 3 and R 4 in the formula (1).
- the biscyclonorbornene compound having a structure corresponding thereto that is, the alicyclic diol compound represented by the general formula (1) includes the following general formula (2 It is preferable to produce it through the chemical modification of the unsaturated bond in these compounds.
- a method for producing the compound represented by the general formula (2) is disclosed in Patent Document 3 (paragraphs [0119] to [0132]) filed by the present applicant.
- a compound having a bisspironorbornene structure having cycloheptanone or cyclooctanone as a skeleton can be synthesized in the same manner as described above.
- R 1 and R 2 each independently represents one selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 10 carbon atoms and a fluorine atom, and n is 2 to 5) Indicates an integer.
- the compound having a bisspirornorbornene structure produced by the production method disclosed in Patent Document 3 is not isolated, and the reaction mixture can be used as it is, or isolated and purified. Then, it may be used for subsequent reactions.
- solid acids examples include solid acids such as ion exchange resins, solid phosphoric acid, activated alumina, silica-alumina, and zeolite. Among these, it is preferable to use an ion exchange resin from the viewpoint of reaction yield, reaction temperature, ease of operation, economy, and the like.
- the reaction temperature for diacetoxylation of the bisspironorbornene compound is preferably in the range of 50 to 150 ° C. When the temperature is lower than 50 ° C., the reaction rate is extremely low and the reaction efficiency is poor. When the temperature exceeds 150 ° C., the raw material, solid acid, and product may be decomposed.
- the hydrolysis reaction of the alicyclic diacetoxy compound can be carried out, for example, by carrying out the reaction in a mixed solvent of alcohol and water in the presence of a base.
- the reaction temperature for the hydrolysis is preferably in the range of 50 to 150 ° C. When the temperature is lower than 50 ° C., the reaction rate is extremely low and the reaction efficiency is poor. When the temperature exceeds 150 ° C., the raw materials and products may be decomposed.
- first method for producing an alicyclic diol compound represented by the above general formula (1) of the present invention in the case of passing through acetoxylation (hereinafter sometimes referred to simply as “first method for producing an alicyclic diol compound”) Will be described in more detail.
- the first production method of the alicyclic diol compound of the present invention comprises adding acetic acid to two carbon-carbon unsaturated bonds in the compound having a bisspirornorbornene structure represented by the above general formula (2) to form diacetoxy.
- the compound which has such a bis spirono norbornene structure represented by General formula (2) is the same as the above-mentioned bis spirono norbornene compound.
- R 1 , R 2 and n in the general formula (2) are the same as R 5 , R 6 and n in the general formula (1), respectively, and the preferred ones are also the same. (Suitable numerical ranges and the like are also the same).
- the above-described acetoxylation method for example, using acetic acid as a substrate and solid acids as a catalyst
- the hydrolysis method is not particularly limited, and the above-described method can be appropriately used.
- the reaction temperature for such diacetoxylation is preferably within the above-mentioned temperature range (range of 50 to 150 ° C.).
- the reaction temperature during such hydrolysis is preferably set to the above-mentioned temperature range (range of 50 to 150 ° C.).
- acetic acid as a substrate is used in excess of the stoichiometric ratio, and the excess is used as a solvent. It is preferable to do.
- a method of diacetoxylation utilizing acetic acid in this way for example, an excess of acetic acid is prepared in a stoichiometric ratio with respect to the bisspirononorbornene compound, and the bisspirononorbornene compound is contained in the acetic acid.
- a solid acid catalyst for example, it may be used in a state of being put in a predetermined porous bag), and the mixture is stirred and heated to the reaction temperature and refluxed to diacetoxy. Can be cited as a suitable method.
- the alicyclic diacetoxy compound obtained by diacetoxylation in this way is represented by the general formula (3).
- R 5, R 6, n in the general formula (3) the general formula (1) is R 5, R 6, n and each synonymous, is the same as the preferred (preferred The same is true for numerical ranges.
- one of R 1 and R 2 is an acetoxy group, and the other (the other) is a hydrogen atom (—H).
- R 3 and R 4 in the general formula (3) one of them is an acetoxy group and the other (the other) is a hydrogen atom (—H).
- the compound represented by the general formula (3) is a diacetoxy compound derived from the substituents of R 1 , R 2 , R 3 and R 4 in the formula (3).
- the acetoxy group in the compound is hydrolyzed.
- the alicyclic diol compound represented by the general formula (1) can be produced.
- Such a hydrolysis method is not particularly limited, and a known method can be appropriately employed.
- a hydrolysis method as described above, an alicyclic diacetoxy compound represented by the above general formula (3) is added to a mixed solvent of alcohol and water in the presence of a base. It is preferable to employ a heating method (heating step).
- Such a base is not particularly limited, and sodium hydroxide, potassium hydroxide, lithium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium methoxide, potassium methoxide, Ammonia, methylamine, ethanolamine, aniline, toluidine, pyridine and the like can be mentioned. From the viewpoint of reactivity, sodium hydroxide, potassium hydroxide, sodium methoxide, potassium methoxide are preferable, sodium hydroxide, potassium hydroxide. Is more preferable.
- Such alcohol is not particularly limited, but is methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, iso-butanol, tert-butanol, hexanol, cyclohexanol, octanol, 2 -Industrially available alkyl alcohols having 1 to 18 carbon atoms such as ethylhexanol, lauryl alcohol, stearyl alcohol, etc., and from the viewpoint of solubility in bases and water, methanol, ethanol, 1-propanol, -Propanol is preferred, and methanol and ethanol are more preferred.
- the temperature condition in such a heating step may be set within a range in which the hydrolysis reaction can proceed, and is not particularly limited, but from the viewpoint of allowing the reaction to proceed more efficiently, the hydrolysis described above.
- the reaction temperature is preferably in the temperature range (range of 50 to 150 ° C.).
- the alicyclic diol compound represented by the general formula (1) thus obtained is the same as the alicyclic diol compound of the present invention (R 1 and R in the formula (1)) 2 , R 3 , R 4 , R 5 , R 6 and n are the same, and the preferred ones are also the same).
- the alicyclic diol compound of the present invention obtained after producing the alicyclic diacetoxy compound represented by the general formula (3) as a reaction intermediate (production intermediate) In the compound represented by the general formula (1) obtained via the compound represented by the formula (3), the preferred one is the same as the alicyclic diol compound of the present invention, for example, In the formula, the value of n is preferably 2 or 3, and more preferably 2.
- the following method can also be employed to produce the alicyclic diol compound according to the present invention. That is, the alicyclic diol compound according to the present invention can also be obtained by hydroborating the carbon-carbon double bond of the bisspirononorbornene compound to obtain a diboronated compound and subjecting it to an oxidation reaction using a known method. Is obtained. Among known oxidation methods, a method using a combination of inorganic bases and hydrogen peroxide is simple and preferable.
- Hydroboration can be carried out using a borane complex.
- the borane complex may be appropriately selected from known complexes. From the viewpoint of yield, a borane / tetrahydrofuran complex is preferable.
- inorganic bases used in the oxidation reaction include sodium hydroxide, potassium hydroxide, lithium hydroxide, calcium hydroxide, barium hydroxide, magnesium hydroxide, sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, and lithium carbonate.
- inorganic bases such as sodium hydrogen carbonate, potassium hydrogen carbonate, and lithium hydrogen carbonate.
- the amount of hydrogen peroxide to be used is preferably in the range of 1 to 5 moles relative to the carbon-carbon unsaturated bond in the bisspirononorbornene compound of the raw material compound, and preferably in the range of 1 to 2 moles. More preferred. When the amount is less than 1 mol, the reaction does not proceed sufficiently. When the amount exceeds 5 mol, side reactions such as oxidation of the produced alicyclic diol compound proceed and the yield tends to decrease.
- the reaction temperature for hydroboration of the bisspirononorbornene compound is preferably in the range of ⁇ 80 to 80 ° C., and more preferably in the range of ⁇ 20 to 50 ° C. When the temperature is lower than ⁇ 80 ° C., the reaction rate is extremely low and the reaction efficiency is poor.
- the reaction temperature for the oxidation of the alicyclic diboron compound is preferably in the range of 20 to 100 ° C. When the temperature is lower than 20 ° C., the reaction rate is extremely low and the reaction efficiency is poor. When the temperature exceeds 100 ° C., the raw materials and products may be decomposed.
- the second production method of the alicyclic diol compound of the present invention comprises adding borane to the two carbon-carbon unsaturated bonds in the compound having the bisspironorbornene structure represented by the general formula (2) to form hydro
- the compound which has such a bis spirono norbornene structure represented by General formula (2) is the same as the above-mentioned bis spirono norbornene compound.
- R 1 , R 2 and n in the general formula (2) are the same as R 5 , R 6 and n in the general formula (1), respectively, and the preferred ones are also the same. .
- the method for adding borane to the bisspironorbornene compound to hydroboration is not particularly limited.
- borane is added to the bisspironorbornene compound to hydroboration. It is preferable to adopt the method to do.
- a hydroboration method for example, the above-mentioned bisspirornorbornene compound and borane complex are added to a solvent and maintained at the reaction temperature with stirring, whereby the two carbon-carbons of the bisspirornorbornene compound are maintained.
- a method of adding borane to the unsaturated bond can be employed.
- the reaction temperature for hydroboration is preferably in the same temperature range ( ⁇ 80 to 80 ° C.) as the reaction temperature for hydroboration described above.
- Such a solvent is not particularly limited, and includes n-hexane, pentane, cyclohexane, benzene, toluene, xylene, acetonitrile, acetone, ethyl acetate, diethyl ether, tetrahydrofuran, dimethyl sulfoxide, dimethyl sulfide, trimethylamine, and the like. From the viewpoint of yield, diethyl ether, tetrahydrofuran, dimethyl sulfide, and trimethylamine are preferable, and diethyl ether and tetrahydrofuran are more preferable.
- the amount of the borane complex used is not particularly limited, but is preferably in the range of 1.0 to 3.0 times mol with respect to the carbon-carbon unsaturated bond in the bisspirononorbornene compound of the starting compound. More preferably, it is in the range of 1 to 1.5 moles. If the amount used is less than the lower limit, the reaction equivalent is insufficient and the yield tends to decrease. On the other hand, if the amount exceeds the upper limit, purification tends to be difficult.
- R 5, R 6, n in the general formula (4) the general formula (1) is R 5, R 6, n and each synonymous, the same is the preferred ones or numeric .
- any one of R 1 and R 2 is a —BR 2 group (R is an alkyl group or a hydrogen atom (—H)), and the other (the other). Is a hydrogen atom (—H).
- any one of R 3 and R 3 is a —BR 2 group (R is an alkyl group or a hydrogen atom (—H)), and the other (the other). Is a hydrogen atom (—H).
- R represents an alkyl group or a hydrogen atom.
- Such an alkyl group of R is more preferably one having 1 to 10 carbon atoms (more preferably 1 to 5, particularly preferably 1 to 2). When such carbon number exceeds the upper limit, the reaction yield tends to decrease.
- R in the —BR 2 group that can be selected as R 1 , R 2 , R 3 , R 4 in the formula (4) is a hydrogen atom, a methyl group, or an ethyl group from the viewpoint of the reaction yield. More preferred are a hydrogen atom and a methyl group, and a hydrogen atom is particularly preferred.
- the compound represented by the general formula (4) derived from the substituents of R 1 , R 2 , R 3 and R 4 in the formula (4) is an alicyclic diboron compound and become.
- the above general formula is obtained by oxidizing the diboron group in the compound.
- the alicyclic diol compound represented by (1) can be produced.
- the method for oxidizing such a diboron group is not particularly limited, and a known method can be appropriately employed.
- As such an oxidation method it is preferable to employ a method of performing an oxidation reaction using a base and an oxidizing agent among known oxidation methods.
- Such a base is not particularly limited and is sodium hydroxide, potassium hydroxide, lithium hydroxide, calcium hydroxide, barium hydroxide, magnesium hydroxide, sodium carbonate, potassium carbonate, magnesium carbonate, calcium carbonate, lithium carbonate.
- Inorganic bases such as sodium hydrogen carbonate, potassium hydrogen carbonate and lithium hydrogen carbonate (the above-mentioned inorganic bases) and organic bases such as sodium methoxide, potassium methoxide, pyridine, trimethylamine and triethylamine. From the viewpoint of rate, reaction temperature, ease of operation, and economy, it is more preferable to use the above-mentioned inorganic bases, and sodium hydroxide, potassium hydroxide, and lithium hydroxide are particularly preferable.
- the oxidizing agent is not particularly limited and is not limited to potassium permanganate, potassium dichromate, hydrogen peroxide, hypochlorous acid, chlorous acid, chloric acid, perchloric acid, potassium nitrate, Dess-Martin reagent, Collins.
- a reagent, Jones reagent, or the like can be used as appropriate, and hydrogen peroxide is preferably used from the viewpoints of reaction yield, reaction temperature, ease of operation, and economy.
- the above-described inorganic bases are used as a base, and the above-mentioned peroxide is used as an oxidizing agent. It is more preferable to employ a method of performing an oxidation reaction by using hydrogen oxide in combination (a method of using a combination of the aforementioned inorganic bases and hydrogen peroxide).
- the alicyclic diol compound represented by the general formula (1) is produced using inorganic bases and hydrogen peroxide as described above, for example, the bisspironorbornene compound and borane are contained in a solvent.
- borane is added to the two carbon-carbon unsaturated bonds of the bisspirononorbornene compound to form a hydroboration, which is expressed by the general formula (4).
- the reaction solution containing the alicyclic diboron compound represented by the general formula (4) is used as it is, and the reaction solution is peroxidized with inorganic bases. You may utilize suitably the method of adding hydrogen and maintaining at the reaction temperature which can be oxidized.
- the —BR 2 group in the formula (4) can be substituted with a hydroxyl group.
- the reaction temperature at the time of such oxidation is preferably set appropriately in the same temperature range as the above-mentioned temperature range of the oxidation reaction temperature (range of 20 to 100 ° C.).
- the alicyclic diol compound represented by the general formula (1) thus obtained is the same as the alicyclic diol compound of the present invention (R 1 and R in the formula (1)) 2 , R 3 , R 4 , R 5 , R 6 and n are the same, and the preferred ones thereof are also the same.)
- the alicyclic diboron represented by the above general formula (4) In the alicyclic diol compound of the present invention obtained after producing the compound as a reaction intermediate (production intermediate), that is, the general formula obtained via the compound represented by the general formula (4)
- the preferred one is the same as the alicyclic diol compound of the present invention, and for example, the value of n in the formula is preferably 2 or 3, 2 is more preferable.
- the alicyclic diacetoxy compound of the present invention is represented by the above general formula (3).
- R 5, R 6, n of the general formula (3) in has the same meaning as R 5, R 6, n in formula (1) is of the same thing that suitable.
- any one of R 1 and R 2 is an acetoxy group (CH 3 COO—), and the other Is a hydrogen atom (—H).
- One of R 3 and R 4 in the general formula (3) is an acetoxy group, and the other is a hydrogen atom (—H).
- the alicyclic diacetoxy compound represented by the general formula (3) employs the first production method of the alicyclic diol compound as described above, and the norbornene represented by the general formula (2).
- a compound represented by the general formula (1) is produced using a compound having a structure as a raw material compound, it can be obtained as a reaction intermediate (production intermediate). That is, the alicyclic diacetoxy compound represented by the general formula (3) can be obtained by acetoxylating the compound having a norbornene structure represented by the general formula (2). .
- the compound having a norbornene structure represented by the above general formula (2) derived from such acetoxylation is added to the above-described R 1 , R 2 , R 3 , R 4 can be introduced.
- the monomer for producing the polymer material of the present invention comprises the alicyclic diol compound of the present invention.
- the alicyclic diol compound of the present invention is not particularly limited, but is particularly useful as a raw material compound (monomer) for forming a polymer compound such as polyester or polyacrylate because of its structure.
- the alicyclic diol compound according to the present invention can be used, for example, as a raw material for polyesters and acrylates, and can provide polyesters and polyacrylates excellent in heat resistance.
- the polyester can be used for various applications including injection molded articles, films, sheets, and foams.
- Cyclohexanone-type bisspironorbornene is synthesized, for example, according to Example 2 described in Patent Document 3 (paragraphs [0126] to [0132]) (“Yield 56%” in Patent Document 3).
- the “cyclohexanone-type bisspironorbornene” mentioned here is a compound in which n in the above general formula (2) is 3, and R 1 and R 2 are both hydrogen atoms.
- cyclohexanone type bisspironorbornene can be synthesized according to Example 2 described in Patent Document 3 (paragraphs [0126] to [0132]).
- R 1 and R 2 are —OH, the other is —H, one of R 3 and R 4 is —OH, and the other is —H.
- R 1 and R 2 are —OH, the other is —H, one of R 3 and R 4 is —OH, and the other is —H.
- the molecular structure of the compound obtained in each example was identified by an IR measuring machine (manufactured by JASCO Corporation, trade names: FT / IR-460, FT / IR-4100), NMR measuring machine ( Using VARIAN, trade name: UNITY INOVA-600 and JEOL Ltd. JNM-Lambda500), and FD-MS measuring machine (JEOL Ltd., trade name: JMS-700V), IR, NMR and The measurement was performed by measuring an FD-MS spectrum.
- IR measuring machine manufactured by JASCO Corporation, trade names: FT / IR-460, FT / IR-4100
- NMR measuring machine Using VARIAN, trade name: UNITY INOVA-600 and JEOL Ltd. JNM-Lambda500
- FD-MS measuring machine JEOL Ltd., trade name: JMS-700V
- the reaction liquid containing the Mannich base represented by this was obtained.
- ⁇ Second step> After cooling the reaction solution in the three-necked flask to 50 ° C., methanol (250 ml) and 4.17 g of a 50 mass% dimethylamine aqueous solution (dimethylamine: 46) with respect to the reaction solution in the three-necked flask. 0.2 mmol) and 30.5 g (461.5 mmol) of cyclopentadiene were added to obtain a second mixed solution. Next, the inside of the three-necked flask is replaced with nitrogen, the temperature in the three-necked flask is set to 65 ° C. at normal pressure (0.1 MPa), and the second mixed solution is heated and stirred at 65 ° C. for 5 hours to form a compound. I was damned.
- the second mixed solution in the three-necked flask was concentrated by azeotropic distillation of methylcyclohexane and methanol, and 100 mL of the liquid was removed from the second mixed solution. By removing 100 mL of such liquid, most of methylcyclohexane (75% by mass with respect to the total amount of methylcyclohexane in the second mixed solution before concentration) was removed from the second mixed solution.
- the second mixed liquid after removal of methylcyclohexane was cooled at ⁇ 20 ° C. for 12 hours to precipitate crystals, and then filtered under reduced pressure to obtain crystals. The crystals thus obtained were washed three times with 20 mL of methanol at ⁇ 20 ° C., and then evaporated to remove methanol to obtain 17.4 g of product (yield). Rate 47%).
- FIG. 1 shows the IR spectrum
- FIG. 2 shows the 1 H-NMR (CD 3 OD) spectrum
- FIG. 3 shows the spectrum of the FD-MS measurement.
- the compound obtained in Example 1 has the following chemical formula (7):
- R 1 and R 2 is —OH, the other is —H, one of R 3 and R 4 is —OH, and the other is —H.
- target compound represented by In the FD-MS spectrum shown in FIG. 3, a peak corresponding to the alicyclic diol compound represented by the chemical formula (7) was confirmed at a position of 275 (m / z: mass to charge ratio).
- a 1 cm square sample was prepared from the porous cloth, and the sample was immersed in acetic acid (20 mL) at 120 ° C. for 200 hours (acid resistance). Sex test). In addition, this acid resistance test was performed under the sealed condition using a 50 ml eggplant type flask as a container and air as an atmospheric gas. Next, the acetic acid used in the acid resistance test was subjected to NMR analysis, LC analysis, and GPC analysis, and it was confirmed that there were no components other than acetic acid (there was no elution of components derived from the sample).
- a cylinder (diameter x1: 20 mm, length y1: 30 mm) having a shape as shown in FIG. 4 was formed using the porous cloth.
- the catalyst was placed near the center of the cylinder. Thereafter, both ends of the cylinder (positions indicated by dotted lines in FIG.
- 5-norbornene-2-spiro-2′-cyclopentanone-5′-spiro-2 ′′ -5 ′′ -norbornene (10.0 g, 41.6 mmol) was dissolved in acetic acid (300 g).
- acetic acid 300 g
- the solution was placed in a flask with a reflux tube having a capacity of 500 mL, and the catalyst-filled bag obtained as described above was suspended in the flask with a string made of the same material as the bag and immersed in the solution.
- the alicyclic diol compound having a bisspironorbornane structure according to the present invention is useful as a monomer for producing a polymer material having a high degree of transparency and heat resistance.
- these compounds have solubility in organic solvents as compared to other polyfunctional compounds used as heat-resistant polymer materials, and are easy to handle in the production process of the polymer materials, It may also be applied as a reaction intermediate for various useful compounds such as medical and agricultural chemicals.
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Abstract
Description
本発明に係る脂環式ジオール化合物は、下記一般式(1)で表されるシクロアルカノンビススピロノルボルナンジオール化合物である。
本発明に係る脂環式ジオール化合物の製造には、これらに対応する構造を有するビススピロノルボルネン化合物、すなわち、一般式(1)で表される脂環式ジオール化合物には、下記一般式(2)で表さるビススピロノルボルネン化合物を原料とし、これら化合物中の不飽和結合の化学修飾を経て製造することが好ましい。一般式(2)で表される化合物の製造方法は本出願人によって出願された、特許文献3(段落[0119]~[0132])に開示されている。
上記ビススピロノルボルネン化合物から、本発明に係る脂環式ジオール化合物を製造するには、炭素-炭素二重結合をアセトキシ化して脂環式ジアセトキシ化合物を得、これに公知の方法を用いて加水分解反応を行うことで、脂環式ジオール化合物が得られる。アセトキシ化は公知の方法を適宜使用すればよいが、その中でも、基質として酢酸を、触媒として固体酸類を使用する方法が簡便であり、好ましい。
本発明の脂環式ジアセトキシ化合物は、上記一般式(3)で表されるものである。このような一般式(3)中のR5、R6、nは、上記一般式(1)中のR5、R6、nと同義であり、その好適なものも同様のものである。このような一般式(3)中のR1、R2、R3、R4に関して、R1、R2は、それらのうちのいずれか一方がアセトキシ基(CH3COO-)であり、他方が水素原子(-H)である。また、一般式(3)中のR3、R4は、それらのうちのいずれか一方がアセトキシ基であり、他方が水素原子(-H)である。
本発明の高分子材料の製造用モノマーは、上記本発明の脂環式ジオール化合物からなるものである。このように、上記本発明の脂環式ジオール化合物は特に制限されないが、その構造から、例えば、ポリエステルやポリアクリレート等の高分子化合物を形成するための原料化合物(モノマー)として特に有用である。
本発明に係る脂環式ジオール化合物は、例えば、ポリエステル、アクリレートの原料として用いることができ、耐熱性に優れたポリエステル、ポリアクリレートを与えることができる。当該ポリエステルは射出成型体、フィルム、シート、発砲体、を初めとする種々の用途に用いることができる。
(シクロヘキサノン型ビススピロノルボルネンの合成):
シクロヘキサノン型ビススピロノルボルネンは、例えば、特許文献3(段落[0126]~[0132])に記載の実施例2に従って合成される(特許文献3では「収率56%」)。ここにいう「シクロヘキサノン型ビススピロノルボルネン」は、上記一般式(2)中のnが3であり、R1及びR2がいずれも水素原子である化合物である。このように、シクロヘキサノン型ビススピロノルボルネンは、特許文献3(段落[0126]~[0132])に記載の実施例2に従って合成できる。
上記シクロヘキサノン型のビススピロノルボルネンを原料として、上記の方法や後述の実施例1で採用する方法と同様にして、シクロヘキサノン型のビススピロノルボルナン構造を有する脂環式ジオールが合成され、IR、NMR、MSスペクトルによって、生成物は化学式(8)で表される脂環式ジオール化合物構造であることが確認できる。
(シクロヘキサノンビススピロノルボルネンの合成):
シクロヘキサノンビススピロノルボルネンは、例えば、特許文献3(段落[0126]~[0132])に記載の実施例2に従って合成される(特許文献3では「収率56%」)。このように、シクロヘキサノンビススピロノルボルネンは、特許文献3(段落[0126]~[0132])に記載の実施例2に従って合成できる。
上記シクロヘキサノンビススピロノルボルネンを原料として、上記の方法や後述の実施例2で採用する方法と同様にして、シクロヘキサノンビススピロノルボルナン構造を有するジオールが合成され、IR、NMR、MSスペクトルによって、生成物は化学式(8)で表される脂環式ジオール化合物構造であることが確認できる。
(その他の脂環式ジオール化合物の合成):
一般式(1)において、シクロアルカノン環のn=4(シクロヘプタノン),n=5(シクロオクタノン)の場合も、上記の方法や後述の実施例の欄で採用する方法と同様にして、シクロヘプタノン型、シクロオクタノン型のビススピロノルボルナン構造を有する化合物を合成し、そのジアセトキシ化反応またはジホウ素化反応、その加水分解反応を経て、脂環式ジオールが合成される(このようにして、他の脂環式ジオールを合成することもできる。)。
(合成例1)
<第一工程>
先ず、1Lの三口フラスコにジメチルアミン塩酸塩を30.86g(378.5mmol)添加した。次に、前記三口フラスコ中に、パラホルムアルデヒド12.3g(385mmol)と、エチレングリコール23.9g(385mmol)と、シクロペンタノン12.95g(154mmol)とを更に添加した。次いで、前記三口フラスコ中に、メチルシクロヘキサン16.2g(165mmol)を添加した後、35質量%塩酸0.4g(HCl:3.85mmol)を添加して第一混合液を得た。なお、前記第一混合液中の酸(HCl)の含有量は、シクロペンタノン中のケトン基に対して0.025モル当量(3.85[HClのモル量]/154[シクロペンタノンのモル量]=0.025)であった。
次に、前記三口フラスコ中の前記反応液を50℃に冷却した後、前記三口フラスコ中の前記反応液に対してメタノール(250ml)と、50質量%ジメチルアミン水溶液4.17g(ジメチルアミン:46.2mmol)と、シクロペンタジエン30.5g(461.5mmol)とを添加し、第二混合液を得た。次いで、前記三口フラスコの内部を窒素置換し、常圧(0.1MPa)で前記三口フラスコ内の温度を65℃にして、前記第二混合液を65℃で5時間加熱撹拌して化合物を生成せしめた。
(実施例1)
200mL二口フラスコに、テトラヒドロフラン(100mL)及び下記化学式(6):
で表されるビススピロノルボルナンジオール(目的化合物)であることが確認された。なお、図3に示すFD-MSスペクトルにおいては、上記化学式(7)で表される脂環式ジオール化合物に相当するピークが275(m/z:質量電荷比)の位置において確認された。
(実施例2)
(ジアセトキシ化合物の合成)
まず、多孔性の布としてポリフェニレンサルファイド(PPS)の織布(中尾フィルター工業株式会社製の商品名「PS9A」、マルチフィラメント糸からなる綾織の織布、1m2あたりの質量:256g、平均厚み:0.42mm、通気性(JIS L 1096):12cm3/cm2・sec、引張強度(縦):>135daN/3cm、引張強度(横):>60daN/3cm、融点:240℃)を準備した。
で表わされる化合物(ジアセトキシ化合物)であることが確認された。なお、このような化合物のNMR測定の結果として、1H-NMR(DMSO-d6)スペクトルを図6に示す。
得られた褐色のオイルにエタノール(100mL)、水酸化カリウム(18.7g)を純水(100mL)に溶かした溶液を加え、加熱して還流を9時間実施した。反応終了後、溶液を濃縮し、濃赤色のオイルを得た。このオイルを酢酸エチルと水で洗いながら分液ロートに移し、分液操作を行って、水層と酢酸エチル層に分けた。水層に対し、2回酢酸エチルで抽出操作を行い、酢酸エチル層を集めた。この酢酸エチル層に5%塩酸を加えて洗浄し、次いで、5%重層水を加えて洗浄を行った。洗浄後の酢酸エチル溶液に無水硫酸マグネシウムを加えて乾燥処理を実施し、ろ過を行い、ろ液を濃縮することで、褐色のオイルを得た。得られた化合物の分析を実施例1と同様に実施したところ、下記化学式(7):
で表わされるビススピロノルボルネンジオール(目的化合物)であることが確認された。
Claims (14)
- 前記一般式(1)において、n=2または3である、請求項1記載の脂環式ジオール化合物。
- 前記一般式(1)において、n=2である、請求項1記載の脂環式ジオール化合物。
- 下記一般式(2)で表されるビススピロノルボルネン構造を有する化合物中の二つの炭素-炭素不飽和結合に酢酸を付加させてジアセトキシ化して、下記一般式(3)で表される脂環式ジアセトキシ化合物を得、当該化合物中のアセトキシ基を加水分解することにより、下記一般式(1)で表されるビススピロノルボルナン構造を有する脂環式ジオール化合物を得る、下記一般式(1)で表されるビススピロノルボルナン構造を有する脂環式ジオール化合物の製造方法。
- 上記一般式(3)を経由して得られる上記一般式(1)において、n=2または3である、請求項4記載の脂環式ジオール化合物の製造方法。
- 上記一般式(3)を経由して得られる上記一般式(1)において、n=2である、請求項4記載の脂環式ジオール化合物の製造方法。
- 前記一般式(3)において、n=2または3である、請求項7記載の脂環式アセトキシ化合物。
- 前記一般式(3)において、n=2である、請求項7記載の脂環式アセトキシ化合物。
- 下記一般式(2)で表されるビススピロノルボルネン構造を有する化合物中の二つの炭素-炭素不飽和結合にボランを付加させてヒドロホウ素化して、下記一般式(4)で表される脂環式ジホウ素化合物を得、当該化合物中のジホウ素基を酸化することにより、下記一般式(1)で表されるビススピロノルボルナン構造を有する脂環式ジオール化合物を得る、下記一般式(1)で表されるビススピロノルボルナン構造を有する脂環式ジオール化合物の製造方法。
- 上記一般式(4)を経由して得られる上記一般式(1)において、n=2または3である、請求項10記載の脂環式ジオール化合物の製造方法。
- 上記一般式(4)を経由して得られる上記一般式(1)において、n=2である、請求項10記載の脂環式ジオール化合物の製造方法。
- 塩基と酸化剤を用いて酸化反応を行う、請求項10乃至12の何れかに記載の脂環式ジオール化合物の製造方法。
- 請求項1乃至請求項3の何れかに記載の脂環式ジオール化合物からなる、高分子材料の製造用モノマー。
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