WO2016136744A1 - 1-クロロ-2,3,3-トリフルオロプロペンの製造方法 - Google Patents
1-クロロ-2,3,3-トリフルオロプロペンの製造方法 Download PDFInfo
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- WO2016136744A1 WO2016136744A1 PCT/JP2016/055267 JP2016055267W WO2016136744A1 WO 2016136744 A1 WO2016136744 A1 WO 2016136744A1 JP 2016055267 W JP2016055267 W JP 2016055267W WO 2016136744 A1 WO2016136744 A1 WO 2016136744A1
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
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- C07—ORGANIC CHEMISTRY
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- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/16—Preparation of halogenated hydrocarbons by replacement by halogens of hydroxyl groups
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- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/10—Acyclic saturated compounds containing halogen atoms containing fluorine and chlorine
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- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/18—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds containing fluorine
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
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- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/126—Unsaturated fluorinated hydrocarbons
Definitions
- the present invention relates to a method for producing 1-chloro-2,3,3-trifluoropropene.
- the present invention is to provide a production method of 1233yd, which has a high conversion rate of the raw material compound and a high selectivity of 1233yd.
- 1,1,2,3,3,3-hexafluoropropane (CF 3 CHFCHF 2 ) (236ea) can be considered as a reactant for performing the dehydrofluorination reaction.
- CF 3 CHFCHF 2 1,1,2,3,3,3-hexafluoropropane
- 236ea 1,1,2,3,3,3-hexafluoropropane
- a raw material represented by a composition formula C 3 H 3 F 4 Cl in which H and F are added one by one to the composition formula C 3 H 2 F 3 Cl of 1233yd Use compounds.
- 3-chloro-1,1,2,3-tetrafluoropropane (CHF 2 CHFCHFCl) (244ea) is mentioned as a raw material compound.
- -Trifluoropropene (CHF CFCHFCl) (1233ye)
- 1-chloro-1,3,3-trifluoropropene (CHF 2 CH CFCl) (1233zb)
- the present inventors have dehydrofluorinated 3-chloro-1,1,2,2-tetrafluoropropane (244ca) to produce a raw material compound. It has been found that high conversion can be achieved and 1233yd can be produced with high selectivity. Furthermore, it has been found that the production of 1233yc, a by-product that is highly toxic and difficult to separate from 1233yd, can be suppressed, and the selectivity of 1233yd is extremely high. Further studies were made based on this finding, and the present invention was completed. That is, the present invention provides the following method for producing 1233yd. Item 1.
- the method according to Item 1-4 further comprising the step of chlorinating 2,2,3,3-tetrafluoropropanol to produce the 3-chloro-1,1,2,2-tetrafluoropropane (244ca).
- the manufacturing method in any one.
- Item 6. Item 6. The production method according to Item 5, wherein in the chlorination, molecular chlorine, thionyl chloride, oxalyl chloride, phosphoryl chloride or phosphorus chloride is used as a chlorinating agent.
- Item 7. Chlorinating 2,2,3,3-tetrafluoropropanol to produce 3-chloro-1,1,2,2-tetrafluoropropane (244ca) in a single reactor; Item 7.
- Item 8 The method according to Item 5 or 6, comprising a step of hydrogenation.
- Item 8. 1-chloro-2,3,3-trifluoropropene (1233yd) and 1-chloro-3,3-difluoropropyne (CHF 2 C ⁇ CCl), 1-chloro-1,3,3- A composition comprising at least one compound selected from the group consisting of trifluoropropene (1233zb) and 3-chloro-1,1,1,3-tetrafluoropropane (244fa), wherein the 1-chloro-3 A composition in which the total amount of at least one compound selected from the group consisting of 1,3-difluoropropyne, 1233zb and 244fa is 5 vol% or less.
- Item 9. Item 9. The composition according to Item 8, which is a heat transfer medium.
- the conversion rate of the raw material compound is high, and 1233yd can be obtained with a high selectivity, and by-product 1233yc can be suppressed.
- the main propane and propene related to the present invention are defined as shown in Table 1.
- the present invention is a method for producing 1233yd, which includes a step of dehydrofluorinating 244ca.
- 1233yd can be suitably used as a heat transfer medium.
- 244ca is used as the raw material compound.
- 244ca can be synthesized by various methods.
- 244ca can be produced by chlorinating 2,2,3,3-tetrafluoropropanol with a chlorinating agent.
- the chlorination reaction of 2,2,3,3-tetrafluoropropanol can be carried out either in the gas phase or in the liquid phase.
- chlorinating agents molecular chlorine, thionyl chloride, oxalyl chloride, phosphoryl chloride can be used. , Phosphorus chloride and the like can be suitably used.
- 2,2,3,3-tetrafluoropropanol can be produced by reacting tetrafluoroethylene and methanol.
- the dehydrofluorination reaction in the present invention can be carried out in a medium, and usually a medium containing water is used.
- the medium containing water may contain a medium other than water, such as an organic solvent, for example, aromatic hydrocarbons such as benzene, toluene, (o-, m- or p-) xylene; hexane, octane And aliphatic hydrocarbons such as nonane; ethers such as diethyl ether and tetrahydrofuran.
- aromatic hydrocarbons such as aromatic hydrocarbons and aliphatic hydrocarbons are selected, and those having a boiling point of 100 ° C. or higher are preferable. More specifically, toluene, xylene and the like are preferable.
- the total amount of the medium used is usually 1 to 15 parts by weight, preferably 2 to 10 parts by weight per 1 part by weight of 244 ca.
- the weight ratio of water to a medium other than water is usually 100: 0 to 10:90, preferably 70:30 to 30:70.
- the dehydrofluorination reaction in one embodiment of the present invention can be performed in the presence of an accelerator.
- the dehydrofluorination reaction of 244ca in the present invention is carried out by either a flow system or a batch system in which the raw material compound 244ca is continuously charged into the reactor and the product is continuously extracted from the reactor. be able to. Since the dehydrofluorination reaction can proceed further when the product stays in the reaction field, it is preferable to carry out the flow method.
- 244ca can be produced by the above-described known method, and a reaction facility for converting 244ca raw material to 244ca and a reaction facility for converting 244ca to 1233yd are connected to continuously produce 1233yd from the 244ca raw material. Can be manufactured. Furthermore, it is possible to carry out the reaction of converting the raw material of 244ca into 244ca and the reaction of converting 244ca into 1233yd in a single reactor, from the viewpoint of reaction efficiency, work efficiency, equipment cost, energy cost, etc. To a single reactor.
- the accelerator can increase the reaction rate from the raw material compound to 1233 yd by desorbing fluorine from the raw material compound and reacting with the fluorine or hydrogen fluoride. Moreover, when a catalyst exists in a reaction field by this, the activity, lifetime, etc. of the catalyst can be improved.
- the promoter is preferably present in an equivalent amount or more with respect to the raw material compound, particularly preferably about 1 to 3 equivalents.
- the promoter is not particularly limited, and alkali or base compounds such as metal hydroxides and metal oxides can be used. When the dehydrofluorination reaction is performed in the liquid phase, these alkali or base compounds are used. Is preferably used.
- the alkali or base compound used as a promoter is used for promoting the dehydrofluorination reaction to form a carbon-carbon double bond.
- Any organic base or inorganic base can be used as long as it is soluble in water.
- Examples of the organic base include trialkylamines such as triethylamine and diisopropylethylamine.
- Examples of the inorganic base include alkali metal hydroxides such as potassium hydroxide and sodium hydroxide; alkaline earth metal hydroxides such as calcium hydroxide; metal oxides such as magnesium oxide. Of these, alkali metal hydroxides are preferred, and potassium hydroxide is more preferred.
- sodium hydroxide, potassium hydroxide, calcium hydroxide, potassium carbonate or sodium carbonate is preferably used as an accelerator, and potassium hydroxide is particularly preferably used.
- the amount of the alkali or base compound used as the accelerator is usually 1 to 5 mol, preferably 1.5 to 3.5 mol, relative to 1 mol of the raw material compound. As the amount of base increases, the conversion rate of the raw material compound and the selectivity of 1233 yd tend to improve.
- Bronsted acids such as sulfonic acid and phosphoric acid
- Lewis acids such as metal oxides and metal halides, and the like can be used.
- a catalyst For example, at least one selected from the group consisting of activated carbon, metal, and metal oxide can be used.
- aluminum oxide, chromium oxide, tin oxide, iron chloride, aluminum fluoride, aluminum fluoride oxide, chromium fluoride oxide, magnesium oxide, magnesium fluoride, magnesium fluoride oxide, lanthanum oxide, lanthanum oxide fluoride, fluoride Lanthanum, nickel, nickel oxide, or a catalyst in which two or more of these are mixed and combined can be used.
- carrier can be used.
- fluorinated aluminum oxide and fluorinated chromium oxide are particularly preferable.
- Phase transfer catalyst / surfactant In the dehydrofluorination reaction in the present invention, a medium containing either or both of the above water and an organic solvent (particularly a hydrophobic organic solvent) can be used.
- a phase transfer catalyst, a surfactant or the like can be present separately from the promoter or catalyst in order to promote the reaction of the substance between the two phases.
- the phase transfer catalyst has an action of moving the raw material compound to the phase where the reaction occurs.
- the dehydrofluorination reaction is performed in a reaction system in which water exists, that is, the water phase and the organic phase coexist and the reactants exist in both phases, the reaction of the reactants between the two phases is promoted. It is particularly preferable to use a phase transfer catalyst.
- the phase transfer catalyst is not particularly limited, but includes quaternary ammonium salts such as tetrabutylammonium bromide (TBAB), trimethylbenzylammonium bromide, triethylbenzylammonium bromide, trioctylmethylammonium chloride (TOMAC); tetrabutylphosphonium chloride ( In addition to phosphonium salts such as TBPC); crown ethers such as 15-crown 5, 18-crown 6 and the like, known substances such as alkylammonium salts, carboxylates and alkylsulfonates can be used.
- quaternary ammonium salts such as tetrabutylammonium bromide (TBAB), trimethylbenzylammonium bromide, triethylbenzylammonium bromide, trioctylmethylammonium chloride (TOMAC); tetrabutylphosphonium chloride ( In addition to phosphonium salt
- quaternary ammonium salts are preferable, and for example, tetrabutylammonium bromide, trioctylmethylammonium bromide, Aliquat336 (registered trademark), and the like can be suitably used.
- the amount thereof is 0.05 to 10% by weight, preferably 0.08 to 5% by weight, based on the weight of water used as a medium.
- surfactant examples include nonionic surfactants such as fatty acid diethanolamide, cationic surfactants such as alkyltriethylammonium salts, anionic surfactants such as monoalkyl sulfates, and alkylcarboxybetaines. And amphoteric surfactants. Of these, amphoteric surfactants are preferred from the viewpoint of heat resistance.
- the amount is usually 0.05 to 10% by weight, preferably 0.08 to 5% by weight, based on the weight of water used as a medium.
- the dehydrofluorination reaction can be performed in either the liquid phase or the gas phase, but it is preferably performed in the liquid phase.
- the reaction temperature of the dehydrofluorination reaction is not particularly limited, and can usually be in the range of about 0 to 500 ° C.
- the temperature can be preferably in the range of about 0 to 150 ° C, more preferably in the range of about 30 to 100 ° C.
- the temperature can be preferably in the range of 100 to 450 ° C.
- the reaction time of the dehydrofluorination reaction is not particularly limited. If the reaction time is increased in the liquid phase reaction and the contact time is increased in the gas phase reaction, the conversion rate can be increased. It is inefficient such that the yield and selectivity will decrease further, and the equipment will become larger than necessary, so it is appropriate to consider other conditions such as the amount of reaction accelerator added and reaction temperature. It is necessary to select a proper reaction time or contact time. Usually, the reaction time in the liquid phase may be 4 to 8 hours, and the contact time in the gas phase may be in the range of about 1 to 100 seconds.
- the pressure of the dehydrofluorination reaction is not particularly limited, and the reaction can be performed under reduced pressure, normal pressure, or increased pressure. Usually, it may be carried out under a pressure in the vicinity of atmospheric pressure (0.1 MPa), but the reaction can proceed smoothly even under a reduced pressure of less than 0.1 MPa.
- the conversion rate of the raw material compound is high, 1233yd can be obtained with a high selectivity, and the byproduct of 1233yc, which is expected to be produced as a by-product from the position of desorbed hydrogen, is suppressed due to the structure of the raw material compound 244ca. be able to.
- 1233 yd simply and efficiently by suppressing manufacturing costs and equipment costs.
- Example 1 244ca 12 g was mixed with an alkaline aqueous solution obtained by mixing 17 g of potassium hydroxide, 23 g of water and 0.18 g of a quaternary ammonium salt (Aliquat336 (registered trademark)) as a phase transfer catalyst, and the mixture was heated at 100 ° C. in a flask. And reacted for 8 hours. When the distillate was collected and analyzed by gas chromatography, the conversion of 244ca was 90%, and the selectivity of 1233yd was 94.8%.
- Aliquat336 quaternary ammonium salt
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Abstract
Description
項1.3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を脱フッ化水素する工程を含むことを特徴とする1-クロロ-2,3,3-トリフルオロプロペン(1233yd)の製造方法。
項2.前記脱フッ化水素を、促進剤の存在下で行う、項1に記載の製造方法。
項3.前記脱フッ化水素を、液相で、触媒の存在下で行う、項1又は2に記載の製造方法。
項4.生成物を連続的に抜き出す、項1~3のいずれかに記載の製造方法。
項5.2,2,3,3-テトラフルオロプロパノールを塩素化して前記3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を生成する工程をさらに含む、項1~4のいずれかに記載の製造方法。
項6.前記塩素化において、分子状塩素、塩化チオニル、塩化オキサリル、塩化ホスホリル又は塩化リンを塩素化剤として使用する、項5に記載の製造方法。
項7.単一の反応器において、2,2,3,3-テトラフルオロプロパノールを塩素化して3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を生成する工程と、244caを脱フッ化水素する工程とを含む、項5又は6に記載の製造方法。
項8.1-クロロ-2,3,3-トリフルオロプロペン(1233yd)と、1-クロロ-3,3-ジフルオロプロピン(CHF2C≡CCl)、1-クロロ-1,3,3-トリフルオロプロペン(1233zb)及び3-クロロ-1,1,1,3-テトラフルオロプロパン(244fa)からなる群から選ばれる少なくとも一種の化合物とを含む組成物であって、前記1-クロロ-3,3-ジフルオロプロピン、1233zb及び244faからなる群から選ばれる少なくとも一種の化合物の総量が5vol%以下である組成物。
項9.熱移動用媒体である、項8に記載の組成物。
本発明においては、原料化合物として244caを用いる。244caは種々の方法で合成可能であり、例えば、塩素化剤により、2,2,3,3-テトラフルオロプロパノールを塩素化して244caを製造することができる。
244caの脱フッ化水素反応は以下の反応式に従う。
CHF2CF2CH2Cl → CHF2CF=CHCl + HF
(244ca) (1233yd)
本発明における脱フッ化水素化反応を行う反応場には、脱フッ素化を促進する促進剤及び触媒のいずれか又は両方を存在させることが好ましい。
本発明における脱フッ化水素反応では、上記の水及び有機溶媒(特に、疎水性有機溶媒)のいずれか又は両方を含む媒体を用いることができる。反応媒体を2相形成する場合には、2相間の物質の反応を促進させるため、前記促進剤又は触媒とは別に、相間移動触媒、界面活性剤等を存在させることができる。
脱フッ化水素反応は液相又は気相のいずれにおいても行うことができるが、液相で行うことが好ましい。
本発明によれば、原料化合物の転化率が高く、1233ydを高い選択率で得られるとともに、原料化合物244caの構造上、脱離する水素の位置から副生が予想される1233ycの副生成を抑えることができる。また、調達が容易な原料化合物を使用し、製造コスト及び設備コストを抑え、簡便に、且つ、効率的に1233ydを得ることができる。
244ca 12gを、水酸化カリウム17g、水23g及び相間移動触媒である第4級アンモニウム塩(Aliquat336(登録商標))0.18gを混合して得られたアルカリ性の水溶液と混合し、フラスコ中で100℃に加熱して8時間反応させた。留出分を集めてガスクロマトグラフィーにより分析したところ、244caの転化率が90%、1233ydの選択率が94.8%であった。
Claims (9)
- 3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を脱フッ化水素する工程を含むことを特徴とする1-クロロ-2,3,3-トリフルオロプロペン(1233yd)の製造方法。
- 前記脱フッ化水素を、促進剤の存在下で行う、請求項1に記載の製造方法。
- 前記脱フッ化水素を、液相で、触媒の存在下で行う、請求項1又は2に記載の製造方法。
- 生成物を連続的に抜き出す、請求項1~3のいずれかに記載の製造方法。
- 2,2,3,3-テトラフルオロプロパノールを塩素化して前記3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を生成する工程をさらに含む、請求項1~4のいずれかに記載の製造方法。
- 前記塩素化において、分子状塩素、塩化チオニル、塩化オキサリル、塩化ホスホリル又は塩化リンを塩素化剤として使用する、請求項5に記載の製造方法。
- 単一の反応器において、2,2,3,3-テトラフルオロプロパノールを塩素化して3-クロロ-1,1,2,2-テトラフルオロプロパン(244ca)を生成する工程と、244caを脱フッ化水素する工程とを含む、請求項5又は6に記載の製造方法。
- 1-クロロ-2,3,3-トリフルオロプロペン(1233yd)と、1-クロロ-3,3-ジフルオロプロピン(CHF2C≡CCl)、1-クロロ-1,3,3-トリフルオロプロペン(1233zb)及び3-クロロ-1,1,1,3-テトラフルオロプロパン(244fa)からなる群から選ばれる少なくとも一種の化合物とを含む組成物であって、前記1-クロロ-3,3-ジフルオロプロピン、1233zb及び244faからなる群から選ばれる少なくとも一種の化合物の総量が5vol%以下である組成物。
- 熱移動用媒体である、請求項8に記載の組成物。
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KR1020177027050A KR101868766B1 (ko) | 2015-02-27 | 2016-02-23 | 1-클로로-2,3,3-트리플루오로프로펜의 제조 방법 |
EP16755488.0A EP3263544B1 (en) | 2015-02-27 | 2016-02-23 | Method for producing 1-chloro-2,3,3-trifluoropropene |
CN201910322535.3A CN109970508B (zh) | 2015-02-27 | 2016-02-23 | 1-氯-2,3,3-三氟丙烯的制造方法 |
US15/553,592 US9963410B2 (en) | 2015-02-27 | 2016-02-23 | Method for producing 1-chloro-2,3,3-trifluoropropene |
CN201680012155.4A CN107250088B (zh) | 2015-02-27 | 2016-02-23 | 1-氯-2,3,3-三氟丙烯的制造方法 |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2017122803A1 (ja) * | 2016-01-15 | 2017-07-20 | 旭硝子株式会社 | 溶剤組成物、フラックスの洗浄方法および金属加工油の洗浄方法 |
US10221112B2 (en) | 2015-07-27 | 2019-03-05 | AGC Inc. | Method of manufacturing 1-chloro-2,3,3-trifluoropropene |
CN109689604A (zh) * | 2016-09-12 | 2019-04-26 | Agc株式会社 | 1-氯-2,3,3-三氟丙烯的制造方法 |
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CN109970508B (zh) | 2022-12-02 |
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US9963410B2 (en) | 2018-05-08 |
CN109970508A (zh) | 2019-07-05 |
EP3263544A4 (en) | 2018-07-04 |
KR20170115106A (ko) | 2017-10-16 |
CN107250088A (zh) | 2017-10-13 |
CN107250088B (zh) | 2019-09-10 |
US20180044268A1 (en) | 2018-02-15 |
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