WO2011086071A1 - Procede de synthese du 3,5-dichloroanisole a partir du 1,3,5-trichlorobenzene - Google Patents
Procede de synthese du 3,5-dichloroanisole a partir du 1,3,5-trichlorobenzene Download PDFInfo
- Publication number
- WO2011086071A1 WO2011086071A1 PCT/EP2011/050288 EP2011050288W WO2011086071A1 WO 2011086071 A1 WO2011086071 A1 WO 2011086071A1 EP 2011050288 W EP2011050288 W EP 2011050288W WO 2011086071 A1 WO2011086071 A1 WO 2011086071A1
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- Prior art keywords
- dichloroanisole
- solvent
- methanolate
- trichlorobenzene
- synthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/10—Preparation of nitro compounds by substitution of functional groups by nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
- C07C205/06—Compounds containing nitro groups bound to a carbon skeleton having nitro groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
- C07C209/06—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms
- C07C209/10—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of halogen atoms with formation of amino groups bound to carbon atoms of six-membered aromatic rings or from amines having nitrogen atoms bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/04—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups
- C07C209/14—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups
- C07C209/18—Preparation of compounds containing amino groups bound to a carbon skeleton by substitution of functional groups by amino groups by substitution of hydroxy groups or of etherified or esterified hydroxy groups with formation of amino groups bound to carbon atoms of six-membered aromatic rings or from amines having nitrogen atoms bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C211/00—Compounds containing amino groups bound to a carbon skeleton
- C07C211/43—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
- C07C211/44—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring
- C07C211/52—Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/16—Preparation of ethers by reaction of esters of mineral or organic acids with hydroxy or O-metal groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds
- C07C41/26—Preparation of ethers by reactions not forming ether-oxygen bonds by introduction of hydroxy or O-metal groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
- C07C43/225—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring containing halogen
Definitions
- the present invention relates to a process which makes it possible to synthesize 3,5-dichloroanisole from 1,3,5-trichlorobenzene and which has, among other advantages, those of having a high yield and requiring no operation.
- the 3,5-dichloroanisole purification product produced during this synthesis makes it very interesting from an economic point of view.
- 1,3,5-triamino-2,4,6-trinitrobenzene is a powerful explosive with a particularly high insensitivity to shock, vibration, impact and fire, making it an explosive choice for the industry. armament.
- 3,5-dichloroanisole is extremely poor and is limited in practice to an article published in 1983 by L. Testaferri et al. in Tetrahedron, 39 (1), 193-197 (hereinafter reference [2]) and Japanese Patent Application Publication No. 53-31631 (hereinafter reference [3]).
- 3,5-dichloroanisole is synthesized by adding sodium methanolate to a suspension, previously maintained under nitrogen at 120 ° C, of 1,3,5-trichlorobenzene in HMPT and allowing it to react. for 1 hour. It is then isolated by extraction with ether and purified by column chromatography on silica gel, using a mixture of petroleum ether and ethyl ether as eluent.
- Reference [3] proposes to synthesize alkoxyaromatic compounds such as 3,5-dichloroanisole, by reacting the corresponding haloaromatic compounds with an alkali metal alkoxide in the presence of N, N'-dimethylimidazolidinone.
- 3,5-dichloroanisole is synthesized by reacting 1,3,5-trichlorobenzene with sodium methanolate in N, N'-dimethylimidazolidinone for 18 hours at a temperature of 100 ⁇ 5. ° C. The 3,5-dichloroanisole is then extracted from the reaction medium with ether.
- N, IV'-dimethylimidazolidinone has the advantage over HMPT of not being classified in CMR substances by European Union regulations.
- the inventors have therefore set themselves the goal of providing a process which, while not using any solvent considered as having a potential or proven negative effect on the health of humans and animals, makes it possible to synthesize 3, 5 -dichloroanisole at the lowest possible costs.
- the inventors have set a specific goal that this method of synthesis has a high yield, lead to obtaining a 3,5-dichloroanisole sufficiently pure so that it is not necessary to submit it, at the end of this synthesis, to any additional purification operation, and uses only simple operations to implement.
- step a) the reaction between the 1, 3, 5-trichloro ⁇ benzene and a methoxide of an alkali metal or alkaline earth metal in a first solvent selected from dimethyl sulfoxide, 1, 1, 3, 3-tetramethylurea, and mixtures thereof; b) the precipitation of the product resulting from step a) in a second solvent which is not one of the substances considered as carcinogenic, mutagenic and / or toxic for reproduction by Regulation (EC) No 1272/2008 of the European Parliament and the Council of 16 December 2008; then
- 1,3,5-trichlorobenzene is firstly reacted with an alkali metal or alkaline earth metal methanolate in dimethylsulfoxide and / or 1,1,3,3-dimethylsulfoxide. tetramethylurea, these solvents have the advantage of not being classified as CMR substances by the European regu ⁇ tation.
- the 3,5-dichloroanisole thus produced is isolated from the reaction medium by precipitating it in a second solvent which does not belong either to the solvents classified in the CMR substances by the European Union regulations.
- the precipitate thus formed is collected.
- the first solvent is preferably dimethylsulfoxide for the simple reason that its cost is currently lower than that of 1, 1, 3, 3-tetramethylurea.
- the methanolate may be an alkali metal methanolate, for example example of sodium, potassium or lithium, or a methanolate of an alkaline earth metal, for example magnesium, calcium or barium.
- This methanolate can be used in solid form or in the form of an alcoholic solution, for example methanol. In all cases, it is preferably used in an amount of 1 to 3 molar equivalents, more preferably 1 to 2 molar equivalents and, most preferably, 1 to 1.3 molar equivalents relative to 1, 3, 5-trichlorobenzene.
- the reaction between the methanolate and the 1,3,5-trichlorobenzene is carried out at a temperature ranging from 20 ° C. to the boiling point of the first solvent, but which is advantageously from 40 to 120 ° C. and, more preferably, from 60 to 100 ° C.
- the reaction time can range from 15 minutes to 24 hours depending on the kinetics it has at the temperature used, but it is preferably from 15 minutes to 5 hours.
- reaction can be conducted by simultaneously introducing methanolate, 1,3,5-trichlorobenzene and the first solvent into the same reactor and subjecting them to the above conditions.
- the second solvent can be any solvent in which the 3,5-dichloroanisole is poorly soluble or insoluble.
- it is preferred that it be water and, better still, water whose temperature does not exceed 20 ° C.
- the method of the invention may furthermore comprise, after the collection of the precipitate, a washing operation of this precipitate if it is desired to increase the purity of 3,5-dichloroanisole, which will typically be the case if the degree of purity of this compound in the precipitate collected is less than 90%.
- this washing operation is advantageously carried out with a third solvent which, too, is chosen from solvents which are not classified in the CMR substances by the European Union regulations.
- this third solvent may be any solvent in which the 3,5-dichloroanisole is sparingly soluble or insoluble but, for the sake of simplicity and cost, it is preferentially water and, better still, water. water whose temperature does not exceed 20 ° C.
- 3,5-dichloroanisole is obtained, the degree of purity of which is always at least 90% and is typically of the order of 96-98%.
- the method of the invention may furthermore comprise, after the collection of the precipitate or, where appropriate, after its washing, a drying operation of this precipitate if the presence of a small amount of solvent and, in particular, water in said precipitate may prove troublesome for the subsequent use of 3,5-dichloroanisole.
- This drying operation is, for example, carried out by drying under a flow of air having a temperature equal to or greater than ambient temperature, by lyophilization, by means of a supercritical fluid (CO 2 for example) or under vacuum at room temperature. ambient temperature or at a temperature above room temperature.
- a supercritical fluid CO 2 for example
- 3,5-dichloroanisole obtained by the process of the invention can be used to synthesize 1,3,5-triamino-2,4,6-trinitrobenzene without the need to submit it prior to any purification operation. .
- the invention therefore also relates to a method for synthesizing 1, 3, 5-triamino-2, 4, 6-trinitro ⁇ benzene, which comprises:
- carrier gas helium, 1.0 mL / min injector temperature: 250 ° C
- oven temperature 1 min at 50 ° C, then 20 ° C / min up to 100 ° C, then 40 ° C / min up to 240 ° C, then 1 min at 240 ° C.
- the yield is 88%.
- the yield is 87%.
- the yield is 89%.
- the yield is 87%.
- the yield is 98%.
- the yield is 96%.
- the yield is 87%.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1213861.6A GB2489890B (en) | 2010-01-14 | 2011-01-12 | Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene |
| US13/522,291 US8901361B2 (en) | 2010-01-14 | 2011-01-12 | Method for synthesizing 3,5-dichloroanisole from 1,3,5-trichlorobenzene |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1050232 | 2010-01-14 | ||
| FR1050232A FR2950882B1 (fr) | 2010-01-14 | 2010-01-14 | Procede de synthese du 3,5-dichloroanisole a partir du 1,3,5-trichlorobenzene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011086071A1 true WO2011086071A1 (fr) | 2011-07-21 |
Family
ID=42561201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/050288 Ceased WO2011086071A1 (fr) | 2010-01-14 | 2011-01-12 | Procede de synthese du 3,5-dichloroanisole a partir du 1,3,5-trichlorobenzene |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8901361B2 (fr) |
| FR (1) | FR2950882B1 (fr) |
| GB (1) | GB2489890B (fr) |
| WO (1) | WO2011086071A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107778184A (zh) * | 2017-11-08 | 2018-03-09 | 中国工程物理研究院化工材料研究所 | 一种用微通道反应技术合成无氯三氨基三硝基苯的方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3924658A1 (de) * | 1989-07-26 | 1991-01-31 | Linde Ag | Verfahren zur filtration feststoffhaltiger fluessigkeiten |
| FR2966153B1 (fr) | 2010-10-19 | 2013-05-17 | Commissariat Energie Atomique | Utilisation d'azaboronates cycliques comme materiaux sensibles dans des capteurs destines a detecter la presence de peroxydes dans un milieu gazeux |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331631A (en) | 1976-09-02 | 1978-03-25 | Kawaken Fine Chem Co Ltd | Preparation of alkoxyaromatic hydrocarbons |
| US4952733A (en) | 1988-12-21 | 1990-08-28 | The United States Of America As Represented By The United States Department Of Energy | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from 3,5-dichloranisole |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2615928A (en) * | 1948-09-23 | 1952-10-28 | Phillips Petroleum Co | Elimination of condenser and accumulator in a hydrocarbon conversion process |
| US4057585A (en) * | 1976-09-02 | 1977-11-08 | Smithkline Corporation | Method of preparing 2,3-dichloroanisole |
| CN101407451B (zh) * | 2008-03-27 | 2012-05-02 | 河北迈尔斯通电子材料有限公司 | 3,5-二氟苯甲醚的制备方法 |
-
2010
- 2010-01-14 FR FR1050232A patent/FR2950882B1/fr active Active
-
2011
- 2011-01-12 GB GB1213861.6A patent/GB2489890B/en active Active
- 2011-01-12 WO PCT/EP2011/050288 patent/WO2011086071A1/fr not_active Ceased
- 2011-01-12 US US13/522,291 patent/US8901361B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331631A (en) | 1976-09-02 | 1978-03-25 | Kawaken Fine Chem Co Ltd | Preparation of alkoxyaromatic hydrocarbons |
| US4952733A (en) | 1988-12-21 | 1990-08-28 | The United States Of America As Represented By The United States Department Of Energy | Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from 3,5-dichloranisole |
Non-Patent Citations (3)
| Title |
|---|
| DATABASE CA [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; 1978, KONDO, FUMIHIKO ET AL: "Alkoxy aromatic compounds", XP002597364, retrieved from STN Database accession no. 1978:508636 * |
| L. TESTAFERRI ET AL., TETRAHEDRON, vol. 39, no. 1, 1983, pages 193 - 197 |
| TESTAFERRI L ET AL: "The reactions of unactivated aryl halides with sodium methoxide in HMPA", TETRAHEDRON, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL LNKD- DOI:10.1016/S0040-4020(01)97647-1, vol. 39, no. 1, 1 January 1983 (1983-01-01), pages 193 - 197, XP002168754, ISSN: 0040-4020 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107778184A (zh) * | 2017-11-08 | 2018-03-09 | 中国工程物理研究院化工材料研究所 | 一种用微通道反应技术合成无氯三氨基三硝基苯的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2489890B (en) | 2017-08-30 |
| US20130178655A1 (en) | 2013-07-11 |
| FR2950882B1 (fr) | 2012-01-13 |
| US8901361B2 (en) | 2014-12-02 |
| GB201213861D0 (en) | 2012-09-19 |
| GB2489890A (en) | 2012-10-10 |
| FR2950882A1 (fr) | 2011-04-08 |
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