WO2004031113A1 - ヒドロキシ安息香酸類の製造方法 - Google Patents
ヒドロキシ安息香酸類の製造方法 Download PDFInfo
- Publication number
- WO2004031113A1 WO2004031113A1 PCT/JP2003/012458 JP0312458W WO2004031113A1 WO 2004031113 A1 WO2004031113 A1 WO 2004031113A1 JP 0312458 W JP0312458 W JP 0312458W WO 2004031113 A1 WO2004031113 A1 WO 2004031113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkali metal
- phenol
- tert
- phenols
- metal compound
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/64—Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring
- C07C37/66—Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring by conversion of hydroxy groups to O-metal groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/15—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction of organic compounds with carbon dioxide, e.g. Kolbe-Schmitt synthesis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
- C07C65/03—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups monocyclic and having all hydroxy or O-metal groups bound to the ring
Definitions
- the present invention relates to a method for producing hydroxybenzoic acids.
- Methods for producing hydroxybenzoic acids include phenol potassium and carbon dioxide.
- JP-A-3-90047 discloses a 2,4-dialkylphenol and an alkali metal hydroxide in a mixed solvent of a hydrocarbon solvent and 1,3-dimethyl-12-imidazolidinone.
- reaction solvent When an aprotic polar organic solvent such as 1,3-dimethyl-12-imidazolidinone is used as the reaction solvent, a high reaction yield can be obtained.However, it is difficult to remove the product from the reaction solution and recover the solvent. There was a big problem. That is, even if the metal salt of 3,5-dialkylsalicylic acid is crystallized and taken out from the reaction solution after the reaction, the solubility of the alkali metal salt in the aprotic polar organic solvent is large, so that the reaction yield is lower than the reaction yield. The removal yield is quite low.
- the obtained aqueous solution of 3,5-dialkylsalicylic acid alkali metal salt contains a large amount of aprotic polar organic solvent, but the aprotic polar solvent contained in the acid precipitation step contains acid. Since it migrated to the precipitation filtrate, it was difficult to recover expensive aprotic polar solvents.
- An object of the present invention is to provide a method for producing hydroxybenzoic acids in high yield without using a non-protonic polar organic solvent.
- the present invention provides a dehydration reaction between phenols and an alkali metal compound. After obtaining an alkali metal salt of a phenol, the alkali metal salt of the phenol is reacted with carbon dioxide to produce hydroxybenzoic acids.
- the present invention relates to a method for producing hydroxybenzoic acids, comprising dehydrating an alkali metal compound and a phenol in excess of the alkali metal compound at a temperature of 160 ° C. or more.
- an excess of phenols relative to the alkali metal compound promotes the dehydration reaction to obtain a high-yield allylic metal salt of the phenols, and uses excess phenols as a reaction medium. It can be used.
- the expression "excess" of the phenols means that the phenols are at least 2 times the mol of the alkali metal compound.
- the amount of the phenols is preferably 2 to 30 moles, more preferably 3 to 15 moles, and more preferably 4 to 10 moles per mole of the alkali metal compound. Is more preferred.
- the amount of the phenols is less than twice the molar amount, metal salts of the phenols precipitate, and uniform mixing cannot be performed.
- the amount of fu Although it can be carried out using enols, the effect is not necessarily higher than when the amount is up to 30 times the molar amount, and the cost is high for the effect.
- the dehydration reaction between the phenols and the alkali metal compound is carried out at a temperature of 160 ° C. or higher, preferably at a temperature of 180 ° C. to 300 ° C. If the temperature during the dehydration reaction is lower than 160 ° C, it becomes difficult to form an alkali metal salt, and water generated during the dehydration reaction between phenols and an alkali metal compound can be efficiently removed. Disappears. If the temperature during the dehydration reaction exceeds 300 ° C, the phenols may extrude out of the system due to their boiling point or may be decomposed due to the high temperature of the generated phenolic metal salts. There is.
- the phenols used in the present invention are preferably compounds represented by the general formula [I].
- R is a group selected from a hydrogen atom, a linear or branched alkyl group having 1 to 20 carbon atoms, an alkenyl group or an alkoxy group.
- n indicates an integer of 1 to 4.
- alkyl-substituted phenols in which R is an alkyl group are suitably used in view of high reaction selectivity and high reaction yield.
- alkyl group to be substituted include methyl, ethyl, n-propynole, i-propynole, n_petitinole, sec-butynole, tert-petitinole, n-octyl, tert-octyl and the like.
- alkyl-substituted phenols include o-cresol, p-cresol. M-cresol, 2,6-dimethylphenol, 3,5-dimethylphenol, 2: 5-dimethylinophenol, o-isopropinole Enonole, 2,6-di-tert-butyrenoenole, 2,4-di-tert-butyroenoenole, 2,5-di-tert-butyroenoenole, 4-n-o Cutinolephenole, 4-tert-octylphenol and the like are preferably used.
- the phenols have a plurality of substituents, they need not necessarily be the same substituent, and may be different types of substituents.
- sodium hydroxide or potassium hydroxide is preferable, and particularly, sodium hydroxide is preferably used because it facilitates the dehydration reaction and can be obtained at low cost.
- an azeotropic dehydrating agent may be used in order to efficiently perform the dehydration reaction.
- a hydrocarbon-based solvent is usually used, and octane, nonane, decane, pendecane, dodecane, aliphatic hydrocarbons such as lignin or kerosene, benzene.
- aromatic hydrocarbons such as benzene, diphenyl ether and naphthalene, and halogenated hydrocarbons such as benzene, o-dichlorobenzene and p-dichlorobenzene can be used.
- the amount of these azeotropic dehydrating agents varies depending on the amount of water brought into the system, but is usually about 2 to 10 times the water content in the system.
- the substituted phenol itself which is a liquid, serves as a medium, so that an alkanol metal salt of a phenol can be obtained without adding a separate reaction medium.
- a reaction medium other than the substituted phenol is also included in the scope of the present invention.
- any medium that is usually used for such a reaction is preferably used as long as it is other than an aprotic polar organic solvent. Light oil.
- Kerosene gasoline, lubricating oil, white oil, alkylbenzene, alkylnaphthalene, diphenyl, diphenylalkane, alkyldiphenyl, triphenyl, 7_k-modified triphenylinole, diphenyl / êtole, a / lequinolefenole Higher-boiling higher alcohols such as ether / re, anolequinolefenyl ether, iso-octyl alcohol, and the like, and mixtures thereof.
- the dehydration reaction is performed in an atmosphere of an inert gas such as nitrogen, helium, or argon.
- the alkali metal salt of the phenol obtained by the dehydration reaction between the phenol and the alkali metal compound is then subjected to a reaction with carbon dioxide.
- the reaction between the metal salt of phenols and carbon dioxide is carried out in an autoclave at a carbon dioxide pressure of 2.0 to 10.0 kgf / cm 2 (G), preferably 4.0 to 8.0 kgf.
- the reaction is carried out under conditions of Z cm 2 (G) and a reaction temperature of 160 to 300 ° C., preferably 170 to 290 ° C.
- the reaction time varies depending on the carbon dioxide pressure and the reaction temperature, but is usually 1 to 6 hr, preferably 1 to 4 hr.
- Water is added to a reaction solution containing an alkali metal salt of hydroxybenzoic acid obtained by the reaction of an alkali metal salt of a phenol with carbon dioxide, and the mixture is separated into an aqueous layer and a medium layer.
- the aqueous layer containing the metal salt of hydroxybenzoic acids is subjected to acid precipitation to precipitate crystals of hydroxybenzoic acids. Thereafter, by performing operations such as filtration and centrifugation, crystals of hydroxybenzoic acids can be obtained.
- the raw materials In the medium layer after the separation of the aqueous layer containing the alkali metal salt of hydroxybenzoic acids, most of the phenols are the raw materials, so the raw materials can be used as they are or by performing filtration, distillation or carbon treatment as necessary. It can be reused as phenols.
- hydroxybenzoic acids obtained by the present invention include 3,5-di-tert-butyl-4-hydroxybenzoic acid, 3,5-di-tert-butyl-2-hydroxybenzoic acid, and 3-methyl-14-hydroxy.
- 5-hydroxy-benzoic acid and the like among which 3,5-di-tert-butyl-1-hydroxybenzoic acid obtained from 2,6-di-tert-butylphenol and 2,4-dibenzoic acid 3,5-Di-tert-butynole-2-hydroxybenzoic acid obtained from mono-tert-butylphenol It is preferable because it can be produced in high yield.
- hydroxybenzoic acids can be obtained in high yield and high purity with little generation of by-products.
- hydroxybenzoic acids can be produced in a simple process at low cost without using an expensive aprotic polar solvent.
- the medium layer after liquid separation contains almost no by-products, it is used as a raw material phenol. It can be reused.
- the hydroxybenzoic acids obtained by the method of the present invention are useful, for example, as a UV absorber for plastics such as propylene and as a raw material for an antioxidant.
- Example 1 the organic layer separated in Example 1 contained almost no by-products and was reusable.
- Example 2 The experiment was conducted in the same manner as in Example 1 except that the temperature during the dehydration reaction was set at 150 ° C. However, when 73% sulfuric acid was added, no crystals were precipitated. It was not possible to obtain a powder of mono-tert-butyl-4-hydroxybenzoic acid.
- 3,5-Di-tert-butyl-2-hydroxybenzoic acid was prepared in the same manner as in Example 1 except that 2,6-di-tert-butylphenol was replaced with 2,4-di-tert-butylphenol. 60 g of a powder were obtained. The yield based on the charged amount of sodium hydroxide was 80%.
- the present invention provides a method for producing high-purity hydroxybenzoic acids with a small amount of by-products in a high yield. According to the present invention, hydroxybenzoic acids can be produced in a simple process at low cost without using an aprotic polar organic solvent.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/529,899 US20060052632A1 (en) | 2002-10-01 | 2003-09-30 | Process for production of hydroxygbenzoic acids |
EP03799169A EP1559705A4 (en) | 2002-10-01 | 2003-09-30 | PRODUCTION OF HYDROXYBENZOIC ACIDS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002288732A JP2004123592A (ja) | 2002-10-01 | 2002-10-01 | ヒドロキシ安息香酸類の製造方法 |
JP2002-288732 | 2002-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004031113A1 true WO2004031113A1 (ja) | 2004-04-15 |
Family
ID=32063689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012458 WO2004031113A1 (ja) | 2002-10-01 | 2003-09-30 | ヒドロキシ安息香酸類の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20060052632A1 (ja) |
EP (1) | EP1559705A4 (ja) |
JP (1) | JP2004123592A (ja) |
KR (1) | KR20050062574A (ja) |
CN (1) | CN1684935A (ja) |
TW (1) | TW200405891A (ja) |
WO (1) | WO2004031113A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1600436A1 (en) * | 2004-05-28 | 2005-11-30 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | Method for producing 3,5-DI-TERT-BUTYL-4-hydroxybenzoic acid |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006315981A (ja) * | 2005-05-11 | 2006-11-24 | Ueno Technology:Kk | 3,5−ジ−tert−ブチル−4−ヒドロキシ安息香酸の製造方法 |
DE102007012578A1 (de) | 2006-09-01 | 2008-03-06 | Bühler PARTEC GmbH | Kationisch stabilisierte wässrige Silicadispersion, Verfahren zu deren Herstellung und deren Verwendung |
CN101239905B (zh) * | 2008-03-19 | 2010-04-14 | 哈尔滨工业大学 | 二羟基苯二甲酸的制备方法 |
KR101196354B1 (ko) | 2010-09-03 | 2012-11-01 | 서유헌 | 퇴행성 신경계 뇌 질환의 예방 또는 치료용 약학 조성물 |
JP5793020B2 (ja) * | 2011-08-19 | 2015-10-14 | 本州化学工業株式会社 | 2,6‐ジヒドロキシ安息香酸の製造方法 |
CN102690195B (zh) * | 2012-03-06 | 2015-02-18 | 江苏添鑫生物工程有限公司 | 液相法对羟基苯甲酸连续生产工艺 |
CN102838482B (zh) * | 2012-09-20 | 2015-02-04 | 山东潍坊润丰化工股份有限公司 | 一种3,6-二氯水杨酸的制备方法 |
CN103012123B (zh) * | 2012-12-20 | 2014-11-26 | 浙江大学 | 3,6-二氯-2-羟基苯甲酸的合成方法 |
CN103012124B (zh) * | 2012-12-26 | 2015-03-25 | 浙江大学 | 3,6-二氯-2-羟基苯甲酸的制备方法 |
WO2019028600A1 (en) * | 2017-08-07 | 2019-02-14 | Rhodia Operations | METHOD FOR PRODUCING CARBOXYLATED PHENOL DERIVATIVES |
CN107573236A (zh) * | 2017-09-25 | 2018-01-12 | 兰州精细化工高新技术开发公司 | 3,5‑二叔丁基‑4‑羟基苯甲酸的精制方法 |
CN108440273B (zh) * | 2018-04-08 | 2021-01-08 | 湘潭大学 | 连续缩合反应制备邻甲基苯氧乙酸的方法及装置 |
CN109096099B (zh) * | 2018-09-28 | 2021-01-12 | 萧县新秀新材料有限公司 | 3,5-二叔丁基-4-羟基苯甲酸的生产方法 |
CN109534982A (zh) * | 2018-11-22 | 2019-03-29 | 甘肃省化工研究院有限责任公司 | 一种3,5-二叔丁基-4-羟基苯甲酸的生产方法 |
US12037315B2 (en) | 2019-03-06 | 2024-07-16 | Honshu Chemical Industry Co., Ltd. | Production method for 4-hydroxy-2-methylbenzoic acid |
WO2021156776A1 (en) * | 2020-02-06 | 2021-08-12 | Nandkumar Chodankar | Simple manufacturing and purification technology for high purity propofol |
CN116082139A (zh) * | 2022-12-27 | 2023-05-09 | 甘肃省化工研究院有限责任公司 | 一种制备水杨酸类紫外线吸收剂的方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS356211B1 (ja) * | 1957-10-08 | 1960-06-01 | ||
EP0834494A1 (en) * | 1996-10-02 | 1998-04-08 | Mitsui Toatsu Chemicals, Incorporated | Process for preparing hydroxybenzoic acids |
JP2000072709A (ja) * | 1998-08-31 | 2000-03-07 | Ueno Fine Chem Ind Ltd | 芳香族ヒドロキシカルボン酸の製法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2745882A (en) * | 1953-02-05 | 1956-05-15 | Exxon Research Engineering Co | Dehydrative distillation for preparation of alkali metal salts of 2, 4, 6-trialkylphenols |
US3816521A (en) * | 1967-10-02 | 1974-06-11 | Ueno Pharm Co Ltd | Process for the production of p-hydroxy benzoic acid |
US4272635A (en) * | 1979-07-26 | 1981-06-09 | The Dow Chemical Company | Production of alkali metal phenates |
JPS61115053A (ja) * | 1984-11-09 | 1986-06-02 | Ueno Seiyaku Oyo Kenkyusho:Kk | 芳香族ヒドロキシカルボン酸の製造法 |
WO2004078693A1 (ja) * | 2003-03-04 | 2004-09-16 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | ヒドロキシ安息香酸類の製造方法 |
-
2002
- 2002-10-01 JP JP2002288732A patent/JP2004123592A/ja active Pending
-
2003
- 2003-09-29 TW TW092126797A patent/TW200405891A/zh unknown
- 2003-09-30 US US10/529,899 patent/US20060052632A1/en not_active Abandoned
- 2003-09-30 KR KR1020057005483A patent/KR20050062574A/ko not_active Application Discontinuation
- 2003-09-30 CN CNA038235331A patent/CN1684935A/zh active Pending
- 2003-09-30 WO PCT/JP2003/012458 patent/WO2004031113A1/ja active Application Filing
- 2003-09-30 EP EP03799169A patent/EP1559705A4/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS356211B1 (ja) * | 1957-10-08 | 1960-06-01 | ||
EP0834494A1 (en) * | 1996-10-02 | 1998-04-08 | Mitsui Toatsu Chemicals, Incorporated | Process for preparing hydroxybenzoic acids |
JP2000072709A (ja) * | 1998-08-31 | 2000-03-07 | Ueno Fine Chem Ind Ltd | 芳香族ヒドロキシカルボン酸の製法 |
Non-Patent Citations (1)
Title |
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See also references of EP1559705A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1600436A1 (en) * | 2004-05-28 | 2005-11-30 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | Method for producing 3,5-DI-TERT-BUTYL-4-hydroxybenzoic acid |
US7102028B2 (en) | 2004-05-28 | 2006-09-05 | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | Method for producing 3,5-di-tert-butyl-4-hydroxybenzoic acid |
Also Published As
Publication number | Publication date |
---|---|
TW200405891A (en) | 2004-04-16 |
KR20050062574A (ko) | 2005-06-23 |
JP2004123592A (ja) | 2004-04-22 |
CN1684935A (zh) | 2005-10-19 |
EP1559705A1 (en) | 2005-08-03 |
EP1559705A4 (en) | 2007-04-25 |
US20060052632A1 (en) | 2006-03-09 |
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