WO2008001826A1 - Procédé de fabrication d'un benzènediméthanol substitué par halogène - Google Patents
Procédé de fabrication d'un benzènediméthanol substitué par halogène Download PDFInfo
- Publication number
- WO2008001826A1 WO2008001826A1 PCT/JP2007/062951 JP2007062951W WO2008001826A1 WO 2008001826 A1 WO2008001826 A1 WO 2008001826A1 JP 2007062951 W JP2007062951 W JP 2007062951W WO 2008001826 A1 WO2008001826 A1 WO 2008001826A1
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- halogen
- acid
- producing
- substituted
- formula
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C33/00—Unsaturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C33/26—Polyhydroxylic alcohols containing only six-membered aromatic rings as cyclic part
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/24—Halogenated derivatives
Definitions
- the present invention relates to a method for producing a halogen-substituted benzene dimethanol.
- Halogen-substituted benzenedimethanol is an important compound as a raw material and intermediate for medicines and agricultural chemicals.
- US Pat. No. 4,927,852 discloses that 2,3,5,6-tetrafluorobenzenedimethanol is useful as an intermediate for household insecticides.
- a method for producing such a halogen-substituted benzenedimethanol for example, a method of reducing 2, 3, 5, 6-tetrafluoroterephthalic acid diester using a borohydride metal compound (Chinese Patent Publication No. 1458 137) , WO 2005/035474) is known, but improvement has been desired in terms of yield.
- the present invention is a.
- X 1 , X 2 , X 3 and X 4 are the same or different and each represents a hydrogen atom or a halogen atom, and at least one of X ⁇ X ⁇ X 3 and X 4 represents a halogen atom.
- R 1 and R 2 are the same or different and each represents an unsubstituted or substituted alkyl group. The
- the amount of acid used is 0.2 to 3 moles on a proton basis with respect to 1 mole of the metal borohydride compound, A process for producing a halogen-substituted benzenedimethanol, wherein the reaction is carried out in a state where the liquid phase is a single layer;
- ⁇ 2> The method for producing a halogen-substituted benzenedimethanol according to ⁇ 1>, wherein XX 2 , X 3 and X 4 are all fluorine atoms;
- the amount of the borohydride metal compound used is 1 to 3.5 moles per mole of the halogen-substituted terephthalic acid diester represented by the formula (1).
- ⁇ 6> The method for producing a halogen-substituted benzene dimethanol according to any one of ⁇ 1> to ⁇ 5>, wherein the borohydride metal compound is an alkali metal borohydride salt;
- ⁇ 12> The method for producing a halogen-substituted benzene dimethanol according to any one of ⁇ 1> to ⁇ 11>, wherein the ether solvent is a hydrophilic ether solvent;
- X 1 , X 2 , X 3 and X 4 are the same or different and are each a hydrogen atom or a halogen atom And at least one of X 1 , X 2 , X 3 and X 4 is a halogen atom.
- the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom, and a fluorine atom is preferable. More preferably, X 1 , X 2 , X 3 and X 4 are all fluorine atoms.
- 1 ⁇ 1 and 12 are the same or different and each represents an unsubstituted or substituted alkyl group.
- Examples of the unsubstituted alkyl group include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, n-decyl group, cyclo Propyl group, 2,2-dimethylcyclopropyl group, cyclopentyl And a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms such as a group, a cyclohexyl group and a menthyl group.
- substituted alkyl group examples include an alkyl group in which at least one hydrogen atom of the unsubstituted alkyl group is substituted with a substituent.
- substituents examples include a fluorine atom; a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, an isobutoxy group, a sec-butoxy group, a tert-butoxy group, etc., and an alkoxy group having 1 to 6 carbon atoms.
- a fluorine-substituted alkoxy group having 1 to 4 carbon atoms such as a trifluoromethoxy group; a carbon number that may be substituted with an alkoxy group having 1 to 6 carbon atoms such as a phenyl group, a 4-methylphenyl group, or a 4-methoxyphenyl group; 6 to 20 aryl groups; phenoxy groups, 2-methylphenoxy groups, 4-methylphenoxy groups, 4-methoxyphenoxy groups, 3-phenoxyphenoxy groups, etc., alkoxy groups having 1 to 6 carbon atoms or carbon An aryloxy group having 6 to 20 carbon atoms which may be substituted with an aryloxy group having 6 to 20 carbon atoms; a benzyloxy group, a 4-methylbenzyloxy group, or a 4-methoyl group; Shibenjiruokishi group, 3-Fuenoki Shibenjiruokishi alkoxy or Ararukiruokishi group Ariru Okishi carbon
- Examples of such a substituted alkyl group include a fluoro-methyl group, a trifluoromethyl group, a methoxymethyl group, an ethoxymethyl group, a methoxyethyl group, and a benzyl group.
- the unsubstituted or substituted alkyl group is preferably an alkyl group having 1 to 6 carbon atoms.
- Diesters (1) include dimethyl 2-fluoroterephthalate, dimethyl 2-chloroterephthalate, dimethyl 2,5-difluoroterephthalate, 2,6-difluoroterephthalate dimethyl, 2,3-difluro Dimethyl terephthalate, dimethyl 2,5-dichloroterephthalate, 2,6-dimethyl dichloroterephthalate, dimethyl 2,3-dichlorodimethyl terephthalate, 2,3,5-dimethyl trifluoroterephthalate, 2, 3 , 5-trichloroterephthalate dimethyl, 2, 3, 5, 6, 6-tetrafluoroterephthalate dimethyl, 2, 3, 5, 6-tetrafluoroterephthalate ethyl, 2, 3, 5, 6-tetra Di (n-propyl) fluoroterephthalate, 2, 3, 5, 6-diisopropyltetrafluoroterephthalate, 2, 3, 5, 6-ditetrafluoroterephthalic acid di (n-butyl), 2, 3, 5, 6-tetra
- Such a diester (1) is produced by a known method such as a method of reacting a corresponding acid halide with a corresponding alcohol compound (see, for example, JP-B-41-66220). be able to.
- borohydride metal compounds include sodium borohydride, lithium borohydride, borohydride metal salts such as borohydride lithium, alkaline borohydrides such as calcium borohydride and magnesium borohydride. Metal salts and the like. From the viewpoint of availability, borohydride metal salt is preferable, and sodium borohydride is more preferable. As such a metal borohydride compound, a commercially available one is usually used, but one prepared in accordance with a known method may be used. For example, sodium borohydride can be easily prepared from borate ester and sodium hydride. Also, other metal borohydrides can be prepared by reacting sodium borohydride with the corresponding metal halide.
- boron borohydride lucium can react with sodium borohydride and calcium chloride. It can be obtained more.
- a borohydride metal compound is prepared and used, one prepared in advance may be added to the reaction system or may be prepared in the reaction system.
- the amount of borohydride metal compound used is usually 1 mol or more per 1 mol of diester (1), and there is no upper limit, but from an economic point of view, it is practically 3.5 mol or less. Preferably, it is 2.5 mol or less.
- ether solvents include jetyl ether, methyl tert-butyl ether, tetrahydrofuran, dioxane, diisopropyl ether, dimethoxyethane, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, and hydrophilic ether solvents are preferred. Tetrahydrofuran, ethylene glycol dimethyl ether, and diethylene glycol dimethyl ether are more preferred, and tetrahydrofuran is particularly preferred.
- the amount of ether solvent used is not particularly limited, but considering volumetric efficiency, it is practically less than 100 times the weight of diester (1).
- an organic solvent that does not inhibit the reaction other than the ether solvent may be used in combination.
- organic solvent include aromatic hydrocarbon solvents such as toluene, xylene, and black benzene; halogenated hydrocarbon solvents such as black form and dichloroethane.
- the amount used is not particularly limited as long as the liquid phase of the reaction mixture is a single layer.
- Acids include mineral acids such as hydrochloric acid, sulfuric acid, and phosphoric acid; aliphatic carboxylic acids such as formic acid, acetic acid, trifluoroacetic acid, propionic acid, butanoic acid, and oxalic acid; aromatic carboxylic acids such as benzoic acid; methanesulfonic acid Aliphatic sulfonic acids such as ethanesulfonic acid and trifluoromethanesulfonic acid; aromatic sulfonic acids such as benzenesulfonic acid and p-toluenesulfonic acid; and the like, mineral acids are preferable, hydrochloric acid and sulfuric acid are more preferable, Hydrochloric acid is particularly preferable.
- the acid is used in an amount of 0.2 to 3 mol, preferably 0.2 to 2.5 mol, based on protons, per mol of the metal borohydride compound.
- an acid aqueous solution may be used.
- the amount of water in the acid aqueous solution depends on the type of ether solvent, amount used, amount of diester (1) used, etc., so that the liquid phase of the reaction mixture becomes a single layer without separating into two or more layers. Decide it.
- an acid aqueous solution having an acid concentration of 10% by weight or more, preferably 20 to 90% by weight is used.
- the reaction temperature is usually ⁇ 20 to 120 ° C., preferably 10 to 70.
- This reaction involves diester (1), a metal borohydride compound and an acid in the presence of an ether solvent. And the reaction is carried out with the liquid phase of the reaction mixture being a single layer. When the liquid phase is separated into two or more layers, the reaction is difficult to proceed, and the yield of the halogen-substituted benzenedimethanol represented by the formula (2) is low.
- a hydrophobic ether solvent an acid substantially free of water is used.
- a hydrophilic ether solvent an acid that does not substantially contain water may be used, or water in a range that allows the liquid phase of the reaction mixture to be kept in a single layer.
- An aqueous acid solution may be used.
- This reaction is usually carried out under normal pressure conditions, but may be carried out under pressurized conditions.
- the progress of the reaction can be confirmed by ordinary analytical means such as gas chromatography and liquid chromatography.
- halogen-substituted benzenedimethanol represented by the formula (2) After completion of the reaction, water or a dilute aqueous solution of mineral acid such as hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid and the reaction mixture are mixed to separate the reaction mixture into two layers, an organic layer and an aqueous layer.
- mineral acid such as hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid and the reaction mixture
- mineral acid such as hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid
- the reaction mixture After completion of the reaction, water or a dilute aqueous solution of mineral acid such as hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid and the reaction mixture are mixed to separate the reaction mixture into two layers, an organic layer and an aqueous layer.
- the extracted halogen-substituted benzenedimethanol represented by the formula (2) may be further purified by ordinary purification means such as column chromat
- the halogen-substituted benzenedimethanol represented by the formula (2) thus obtained includes 2-fluoro-1,4-benzenedimethanol, 2-chloro-1,4 monobenzenedimethanol, and 2,5-difluoro-1,4.
- halogen-substituted benzene dimethanol which is important as a raw material for medicines and agricultural chemicals, intermediates and the like, can be produced with high yield, and thus is industrially useful.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800239010A CN101479221B (zh) | 2006-06-27 | 2007-06-21 | 卤素取代苯二甲醇的制备方法 |
US12/303,585 US7973201B2 (en) | 2006-06-27 | 2007-06-21 | Process for production of halogen-substituted benzenedimethanol |
EP07745559A EP2033944A4 (en) | 2006-06-27 | 2007-06-21 | PROCESS FOR PRODUCING HALOGEN-SUBSTITUTED BENZENEDIMETHANOL |
IL195734A IL195734A (en) | 2006-06-27 | 2008-12-04 | Process for production of halogen-substituted benzenedimethanol |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-176479 | 2006-06-27 | ||
JP2006176479 | 2006-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008001826A1 true WO2008001826A1 (fr) | 2008-01-03 |
Family
ID=38845591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/062951 WO2008001826A1 (fr) | 2006-06-27 | 2007-06-21 | Procédé de fabrication d'un benzènediméthanol substitué par halogène |
Country Status (6)
Country | Link |
---|---|
US (1) | US7973201B2 (ja) |
EP (1) | EP2033944A4 (ja) |
KR (1) | KR20090027740A (ja) |
CN (1) | CN101479221B (ja) |
IL (1) | IL195734A (ja) |
WO (1) | WO2008001826A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109704916B (zh) * | 2017-10-25 | 2022-05-24 | 江苏扬农化工股份有限公司 | 一种取代芳香醇的合成工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4927852A (en) | 1987-08-06 | 1990-05-22 | Imperial Chemical Industries Plc | Insecticidal compounds characterized by enhanced knockdown effect |
JPH0466220B2 (ja) | 1983-09-16 | 1992-10-22 | Ici Plc | |
CN1458137A (zh) | 2003-06-06 | 2003-11-26 | 天津大学 | 2,3,5,6-四氟对甲基苄醇的制备方法 |
WO2005035474A1 (fr) | 2003-10-10 | 2005-04-21 | Jiangsu Yangnong Chemical Co., Ltd. | Preparation d'un produit intermediaire pour les pyrethroides |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10117206A1 (de) * | 2001-04-06 | 2002-10-10 | Bayer Ag | Verfahren zur Herstellung von halogensubstituierten Dibenzylalkoholen, diese halogensubstituierten Dibenzylalkohole sowie deren Verwendung |
ES2355834T3 (es) * | 2004-08-05 | 2011-03-31 | Sumitomo Chemical Company, Limited | Método para la producción de un bencenodimetanol sustituido con halógeno. |
ZA200806108B (en) * | 2006-01-24 | 2009-10-28 | Sumitomo Chemical Co | Method for producing halogen-substituted benzenedi-methanol |
-
2007
- 2007-06-21 CN CN2007800239010A patent/CN101479221B/zh not_active Expired - Fee Related
- 2007-06-21 EP EP07745559A patent/EP2033944A4/en not_active Withdrawn
- 2007-06-21 US US12/303,585 patent/US7973201B2/en not_active Expired - Fee Related
- 2007-06-21 WO PCT/JP2007/062951 patent/WO2008001826A1/ja active Application Filing
- 2007-06-21 KR KR1020097001574A patent/KR20090027740A/ko not_active Application Discontinuation
-
2008
- 2008-12-04 IL IL195734A patent/IL195734A/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0466220B2 (ja) | 1983-09-16 | 1992-10-22 | Ici Plc | |
US4927852A (en) | 1987-08-06 | 1990-05-22 | Imperial Chemical Industries Plc | Insecticidal compounds characterized by enhanced knockdown effect |
CN1458137A (zh) | 2003-06-06 | 2003-11-26 | 天津大学 | 2,3,5,6-四氟对甲基苄醇的制备方法 |
WO2005035474A1 (fr) | 2003-10-10 | 2005-04-21 | Jiangsu Yangnong Chemical Co., Ltd. | Preparation d'un produit intermediaire pour les pyrethroides |
Non-Patent Citations (4)
Title |
---|
KAGAKU DAIJITEN HENSHU IINKAI: "Kagaku Daijiten 5", 15 August 1989, KYORITSU SHUPPEN CO., LTD., pages: 62, XP008143318 * |
See also references of EP2033944A4 |
SHIGERU OAE, SEIZO TAMAGAKI: "Gosei Kagaku Series Kangen Hanno", 25 January 1975, MARUZEN CO., LTD, pages: 64, XP008117374 * |
THE CHEMICAL SOCIETY OF JAPAN: "Shin Jikken Kagaku Koza 15 Sanka to Kangen II", 20 February 1977, MARUZEN CO., LTD, pages: 216, XP008117375 * |
Also Published As
Publication number | Publication date |
---|---|
EP2033944A1 (en) | 2009-03-11 |
CN101479221B (zh) | 2013-01-16 |
EP2033944A4 (en) | 2010-04-07 |
US20100174122A1 (en) | 2010-07-08 |
US7973201B2 (en) | 2011-07-05 |
IL195734A (en) | 2011-11-30 |
IL195734A0 (en) | 2009-09-01 |
KR20090027740A (ko) | 2009-03-17 |
CN101479221A (zh) | 2009-07-08 |
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