WO2022244481A1 - ブロモフルオロメタンの製造方法 - Google Patents
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- WO2022244481A1 WO2022244481A1 PCT/JP2022/015079 JP2022015079W WO2022244481A1 WO 2022244481 A1 WO2022244481 A1 WO 2022244481A1 JP 2022015079 W JP2022015079 W JP 2022015079W WO 2022244481 A1 WO2022244481 A1 WO 2022244481A1
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- fluorinating agent
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- LHMHCLYDBQOYTO-UHFFFAOYSA-N bromofluoromethane Chemical compound FCBr LHMHCLYDBQOYTO-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 150000001875 compounds Chemical class 0.000 claims abstract description 92
- 239000012025 fluorinating agent Substances 0.000 claims abstract description 75
- HJUGFYREWKUQJT-UHFFFAOYSA-N tetrabromomethane Chemical group BrC(Br)(Br)Br HJUGFYREWKUQJT-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000003682 fluorination reaction Methods 0.000 claims abstract description 51
- 239000002994 raw material Substances 0.000 claims abstract description 51
- IHZAEIHJPNTART-UHFFFAOYSA-N tribromofluoromethane Chemical compound FC(Br)(Br)Br IHZAEIHJPNTART-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- AZSZCFSOHXEJQE-UHFFFAOYSA-N dibromodifluoromethane Chemical compound FC(F)(Br)Br AZSZCFSOHXEJQE-UHFFFAOYSA-N 0.000 claims abstract description 27
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 7
- 230000000737 periodic effect Effects 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 26
- 125000001153 fluoro group Chemical group F* 0.000 claims description 21
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- FQFKTKUFHWNTBN-UHFFFAOYSA-N trifluoro-$l^{3}-bromane Chemical compound FBr(F)F FQFKTKUFHWNTBN-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 125000001246 bromo group Chemical group Br* 0.000 claims description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 229910052706 scandium Inorganic materials 0.000 claims description 5
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 5
- TVVNZBSLUREFJN-UHFFFAOYSA-N 2-(4-chlorophenyl)sulfanyl-5-nitrobenzaldehyde Chemical compound O=CC1=CC([N+](=O)[O-])=CC=C1SC1=CC=C(Cl)C=C1 TVVNZBSLUREFJN-UHFFFAOYSA-N 0.000 claims description 4
- CEBDXRXVGUQZJK-UHFFFAOYSA-N 2-methyl-1-benzofuran-7-carboxylic acid Chemical compound C1=CC(C(O)=O)=C2OC(C)=CC2=C1 CEBDXRXVGUQZJK-UHFFFAOYSA-N 0.000 claims description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 4
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052740 iodine Inorganic materials 0.000 claims description 4
- XRURPHMPXJDCOO-UHFFFAOYSA-N iodine heptafluoride Chemical compound FI(F)(F)(F)(F)(F)F XRURPHMPXJDCOO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910021583 Cobalt(III) fluoride Inorganic materials 0.000 claims description 3
- YCYBZKSMUPTWEE-UHFFFAOYSA-L cobalt(ii) fluoride Chemical compound F[Co]F YCYBZKSMUPTWEE-UHFFFAOYSA-L 0.000 claims description 3
- SHXXPRJOPFJRHA-UHFFFAOYSA-K iron(iii) fluoride Chemical compound F[Fe](F)F SHXXPRJOPFJRHA-UHFFFAOYSA-K 0.000 claims description 3
- DBJLJFTWODWSOF-UHFFFAOYSA-L nickel(ii) fluoride Chemical compound F[Ni]F DBJLJFTWODWSOF-UHFFFAOYSA-L 0.000 claims description 3
- OEKDNFRQVZLFBZ-UHFFFAOYSA-K scandium fluoride Chemical compound F[Sc](F)F OEKDNFRQVZLFBZ-UHFFFAOYSA-K 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 description 69
- 239000007789 gas Substances 0.000 description 25
- 239000012159 carrier gas Substances 0.000 description 12
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 11
- 239000007791 liquid phase Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 10
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 10
- 239000006200 vaporizer Substances 0.000 description 10
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000605 extraction Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000004817 gas chromatography Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- DFUYAWQUODQGFF-UHFFFAOYSA-N 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane Chemical compound CCOC(F)(F)C(F)(F)C(F)(F)C(F)(F)F DFUYAWQUODQGFF-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 229910001512 metal fluoride Inorganic materials 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000792 Monel Inorganic materials 0.000 description 2
- 229920001774 Perfluoroether Polymers 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical class FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910014263 BrF3 Inorganic materials 0.000 description 1
- 229910015475 FeF 2 Inorganic materials 0.000 description 1
- -1 FeF 3 ) Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- VNWKTOKETHGBQD-AKLPVKDBSA-N carbane Chemical compound [15CH4] VNWKTOKETHGBQD-AKLPVKDBSA-N 0.000 description 1
- 229940125368 controlled substance Drugs 0.000 description 1
- 239000000599 controlled substance Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000010702 perfluoropolyether Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/204—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being a halogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/125—Halogens; Compounds thereof with scandium, yttrium, aluminium, gallium, indium or thallium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/128—Halogens; Compounds thereof with iron group metals or platinum group metals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B61/00—Other general methods
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/14—Acyclic saturated compounds containing halogen atoms containing fluorine and bromine
Definitions
- the present invention relates to a method for producing bromofluoromethane.
- Bromofluoromethanes such as tribromofluoromethane (CBr 3 F) and dibromodifluoromethane (CBr 2 F 2 ) are highly versatile and can be used as raw materials for fluororesins, active pharmaceutical ingredients, and etching gases for semiconductor manufacturing. is a compound.
- An object of the present invention is to provide a method for producing bromofluoromethane capable of selectively synthesizing at least one of tribromofluoromethane and dibromodifluoromethane.
- one aspect of the present invention is as follows [1] to [9].
- [1] At least one of carbon tetrabromide and tribromofluoromethane in the presence of an element or a salt of a metal belonging to period 3 or 4 of the periodic table and belonging to any one of groups 3 to 13
- At least one of tribromofluoromethane and dibromodifluoromethane can be selectively synthesized.
- FIG. 2 is a diagram illustrating the structure of an example of an analysis device that analyzes generated bromofluoromethane
- the method for producing bromofluoromethane according to the present embodiment at least one of tribromofluoromethane and dibromodifluoromethane, which is the target compound, can be selectively synthesized (with high selectivity).
- the production amounts of bromotrifluoromethane and carbon tetrafluoride, which are by-products in the fluorination step of the method for producing bromofluoromethane according to the present embodiment can each be 1% by mass or less.
- the amount of bromotrifluoromethane and carbon tetrafluoride produced is the amount of carbon tetrabromide, tribromofluoromethane, dibromodifluoromethane, bromotrifluoromethane, and carbon tetrafluoride contained in the product of the fluorination reaction. Percentage of total mass.
- fluorination can be performed without requiring high temperature conditions and high pressure conditions, so the method for producing bromofluoromethane according to the present embodiment is safe. It has advantages such as high energy consumption, low energy consumption, and low environmental impact.
- tribromofluoromethane and dibromodifluoromethane have the property of generating plasma by dissociating even with weak energy, and are not regulated substances under the Montreal Protocol, so they are suitable as etching gases. is a controlled substance under the Montreal Protocol and cannot be used as an etching gas. Moreover, since carbon tetrafluoride can be produced at a lower cost by a general production method, it is not preferable to produce it in the method for producing bromofluoromethane according to the present embodiment.
- a simple substance or salt of these metals has a chemical formula of the fluorinating agent present in the reaction system and [MF A ] + [ZF B ] ⁇ (M is a metal, F is a fluorine atom, Z is a bromine atom or an iodine atom, A and B each represent an arbitrary coefficient.)
- M is a metal
- F is a fluorine atom
- Z is a bromine atom or an iodine atom
- a and B each represent an arbitrary coefficient.
- metals aluminum (Al), scandium (Sc), iron (Fe), cobalt (Co), and nickel (Ni) are preferable as simple metals from the viewpoint of availability and safety.
- Halides of aluminum, scandium, iron, cobalt and nickel are preferred as metal salts.
- metal fluorides are more preferable. More preferred are aluminum fluoride (AlF 3 ), scandium fluoride (ScF 3 ), iron fluoride (FeF 2 , FeF 3 ), cobalt fluoride (CoF 2 , CoF 3 ), and nickel fluoride (NiF 2 ). . These simple metals may be used singly or in combination of two or more. Also, the metal salts may be used singly or in combination of two or more. Furthermore, a single metal and a metal salt may be used in combination.
- the amount of the elemental metal or salt to be subjected to fluorination is not particularly limited, but from the viewpoint of ease of treatment after the completion of the reaction, the amount is 1 mol % or more and 50 mol % or less with respect to the amount of the raw material compound. more preferably 5 mol % or more and 50 mol % or less.
- the shape of the metal simple substance and metal salt when subjected to fluorination is not particularly limited, and may be, for example, film-like, foil-like, pellet-like, block-like, spherical, granular, or powdery. Elemental metals and metal salts may react with the fluorinating agent to be partially or wholly converted to metal fluorides, but this does not pose a major problem for the fluorination of the raw material compound.
- a fluorinating agent is used to replace the bromine atoms in the raw material compound with fluorine atoms for fluorination.
- a fluorinating agent an interhalogen compound having a bromine atom or an iodine atom and having 3 or more fluorine atoms is preferable.
- Bromine trifluoride (BrF 3 ), bromine pentafluoride (BrF 5 ), iodine pentafluoride (IF 5 ), and iodine heptafluoride (IF 7 ) are more preferred from the viewpoint of availability and ease of handling. preferable.
- the fluorinating agents may be used singly or in combination of two or more.
- the amount of the fluorinating agent used is preferably 0.7 to 1.5 times the stoichiometric amount.
- the reaction of fluorinating carbon tetrabromide to obtain dibromodifluoromethane is represented, for example, by the following formula (1)
- the reaction of fluorinating carbon tetrabromide to obtain tribromofluoromethane is represented, for example, by the following formula (2).
- carbon tetrabromide reacts with (2/3) molar equivalents of bromine trifluoride to form dibromodifluoromethane
- carbon tetrabromide reacts with (1/3 ) with a molar equivalent of bromine trifluoride to give tribromofluoromethane.
- the amount of bromine trifluoride as the fluorinating agent is 0.7 times or more the stoichiometric ratio (2/3 molar equivalents) in formula (1). It is preferable to make it 1.5 times or less. That is, when the raw material compound is carbon tetrabromide and two of the four bromine atoms of the carbon tetrabromide are substituted with fluorine atoms to synthesize the target compound,
- the ratio of the total molar amount of fluorine atoms in the fluorinating agent is preferably 1.4 or more and 3.0 or less.
- the ratio of the total molar amount of fluorine atoms in the fluorinating agent is more preferably 2.0 or more and 2.8 or less, more preferably 2.2 or more and 2.6 or less.
- the amount of bromine trifluoride as the fluorinating agent is 0.7 times the stoichiometric ratio (1/3 molar equivalent) in formula (2). It is preferable to set the amount to 1.5 times or less. That is, when the target compound is synthesized by substituting one of the plurality of bromine atoms of the raw material compound with a fluorine atom, the ratio of the total molar amount of fluorine atoms of the fluorinating agent to the molar amount of the raw material compound is It is preferable to make it 0.7 or more and 1.5 or less.
- the ratio of the total molar amount of fluorine atoms of the fluorinating agent to the molar amount of the raw material compound is It is more preferably 1.0 or more and 1.4 or less, and further preferably 1.1 or more and 1.3 or less.
- Fluorination in which a raw material compound is reacted with a fluorinating agent, is preferably carried out in a liquid phase reaction. That is, it is preferable to use a solvent capable of dissolving at least one of the raw material compound and the fluorinating agent, and carry out the fluorination reaction in a reaction solution in which at least one of the raw material compound and the fluorinating agent is dissolved in the solvent.
- the raw material compound may be first supplied into the reaction system and then the fluorinating agent may be supplied into the reaction system, or the raw material compound and the fluorinating agent may be simultaneously supplied into the reaction system. may be supplied.
- a method for supplying the fluorinating agent into the reaction system for example, a liquid fluorinating agent or a fluorinating agent solution obtained by dissolving a fluorinating agent in a solvent is added using a dropping funnel or a liquid mass flow controller.
- a method of supplying the fluorinating agent into the reaction system and a method of supplying the fluorinating agent vaporized using a vaporizer into the reaction system are exemplified.
- the temperature of the liquid fluorinating agent or fluorinating agent solution when supplied into the reaction system is the temperature at which the liquid fluorinating agent or fluorinating agent solution does not solidify (for example, if the liquid fluorinating agent is , a temperature equal to or higher than the melting point of the fluorinating agent) and a temperature at which the mass flow controller operates.
- the temperature of the liquid fluorinating agent or fluorinating agent solution when supplied into the reaction system is preferably about ⁇ 5° C. of the reaction temperature.
- the fluorination reaction may be performed while performing a reflux operation of cooling and liquefying the vaporized raw material compound and fluorinating agent with a cooling device and returning the liquefied raw material compound and fluorinating agent to the reaction solution.
- Solvents that can be used in the fluorination reaction include those that can dissolve the raw material compound, the target compound and the fluorinating agent and that do not or hardly react chemically with the raw material compound, the target compound and the fluorinating agent. be done.
- perfluoroalkanes, perfluoroethers, perfluoropolyethers, chlorinated fluorinated hydrocarbons, chlorinated hydrocarbons, perfluoroalkylamines, 1-ethoxy-1,1,2,2,3,3,4,4,4- Nonafluorobutane (C 6 H 5 F 9 O) can be mentioned.
- solvents from the viewpoint of availability, perfluoroalkanes, perfluoroethers, chlorinated hydrocarbons, 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane are preferred, and carbon tetrachloride (CCl 4 ), dichloromethane (CH 2 Cl 2 ) and 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane are more preferred.
- the amount of solvent used in the fluorination reaction is not particularly limited, but may be appropriately determined depending on the solubility of the raw material compound, target compound, and fluorinating agent in the solvent.
- the reaction temperature and reaction pressure of the fluorination reaction are not particularly limited as long as the liquid phase reaction is possible and the excessive progress of fluorination is suppressed, but the reaction temperature is ⁇ 80. C. to 200.degree. C., more preferably 0.degree. C. to 100.degree. C., and even more preferably 10.degree. If the reaction temperature is ⁇ 80° C. or higher, the reaction solution is less likely to solidify, and if it is 200° C. or lower, excessive progress of fluorination is suppressed, the yield of the target compound is improved, and the target compound is obtained with high selectivity. be able to.
- the reaction pressure is preferably atmospheric pressure or higher and 1 MPaG or lower from the viewpoint of the yield of the target compound, selectivity, and ease of industrial implementation. In this specification, pressure is represented by gauge pressure unless otherwise specified.
- the fluorination reaction may be performed in an inert gas atmosphere.
- inert gases include nitrogen gas (N 2 ), helium (He), and argon (Ar).
- the reaction vessel for carrying out the fluorination reaction may be made of any material as long as it has corrosion resistance to the fluorinating agent.
- suitable materials for the reaction vessel include nickel-based alloys such as Inconel (registered trademark), Hastelloy (registered trademark), and Monel (registered trademark), nickel, aluminum, alumina, stainless steel, and platinum (Pt). etc.
- the inner surface of the reaction vessel made of these materials may be lined with a fluorine resin.
- the reaction vessel may be made of a material having no corrosion resistance to the fluorinating agent as long as the inner surface is lined with a fluororesin.
- the reaction solution may be post-treated as necessary to extract the target compound from the reaction solution.
- post-treatment methods include washing, distillation, and filtration of the reaction solution. These post-treatments may be performed by one method alone, or may be performed by appropriately combining two or more methods.
- the present invention will be described more specifically below with reference to examples and comparative examples.
- Example 1 A raw material compound was fluorinated using the reactor shown in FIG. First, the configuration of the reactor shown in FIG. 1 will be described.
- the reaction apparatus of FIG. 1 includes a reaction vessel 20 made of Monel (registered trademark) with a capacity of 50 mL that can accommodate a reaction solution 25 and in which a fluorination reaction of a raw material compound is performed, and a pressure that measures the pressure inside the reaction vessel 20.
- Monel registered trademark
- thermometer 22 for measuring the temperature of the reaction solution 25; a stirrer 24 for stirring the reaction solution 25; a constant temperature bath 26 for controlling the temperature of the reaction solution 25;
- a dropping device 23 for dropping a fluorinating agent or a fluorinating agent solution, and a dropping speed control valve for adjusting the dropping speed of the liquid fluorinating agent or fluorinating agent solution supplied from the dropping device 23 to the inside of the reaction vessel 20.
- a gas phase extraction port 27 for extracting the gas phase inside the reaction vessel 20
- liquid phase extraction port 29 for extracting the liquid phase (reaction solution 25) inside the reaction vessel 20 and the liquid
- a phase extracting pipe 30 and a vaporizer 1 are provided.
- a fluorinating agent solution prepared by dissolving 3.3 g (24 mmol) of bromine trifluoride in 10 mL of carbon tetrachloride was placed in the dropping device 23 .
- 0.2 g of nickel powder with a purity of 99% manufactured by Hayashi Junyaku Kogyo Co., Ltd.
- 9.9 g (30 mmol) of carbon tetrabromide, and 15 mL of carbon tetrachloride were put into the reaction vessel 20 .
- the carbon tetrabromide was dissolved in the carbon tetrachloride by stirring with the stirrer 24 to obtain a reaction solution 25 .
- the fluorinating agent solution was dropped into the reaction solution 25 by the dropping device 23 to carry out the fluorination reaction of carbon tetrabromide.
- the dropping speed of the fluorinating agent solution was adjusted by adjusting the opening degree of the dropping speed control valve 28, and 10 mL of the fluorinating agent solution was dropped over 1 hour. Then, the fluorination reaction was continued for one hour after the dropwise addition of the fluorinating agent solution was completed.
- reaction solution 25 is allowed to stand still, and the reaction solution 25 is transferred to the vaporizer 1 through a liquid phase extraction port 29 and a liquid phase extraction pipe 30 to a gauge pressure of ⁇ 0.1 MPaG. extracted some of the Then, the vaporizer 1 containing the reaction solution 25 was removed from the reactor and connected to the analyzer shown in FIG.
- the analyzer shown in FIG. 2 a carrier gas flow control device 3 for controlling the flow rate of , a sample flow control device 4 for controlling the flow rate of the sample supplied from inside the vaporizer 1, and a fluorinating agent removed from the sample supplied from the vaporizer 1
- the carrier gas is supplied from the carrier gas cylinder 2 through the carrier gas pressure control device 5 and the carrier gas flow rate control device 3 so that the carrier gas is circulating in the analyzer.
- the reaction solution 25 in the vaporizer 1 was vaporized (hereinafter, the gas of the reaction solution 25 is referred to as "sample gas").
- Nitrogen gas with a purity of 99.99995% or higher was used as the carrier gas.
- the sample gas was sent to the fluorinating agent removal tank 6 by carrier gas to remove unreacted fluorinating agent from the sample gas.
- the inside of the fluorinating agent removing tank 6 is filled with porous nickel manufactured by The Nilaco Corporation (specific surface area: 7500 m 2 /m 3 ).
- the inner diameter of the fluorinating agent removing tank 6 is 1 inch and the length is 15 cm.
- the sample gas from which the fluorinating agent has been removed is passed through the gas measuring tube 8, and after measuring the amount of the gas, the flow path switching valve 9 is operated to obtain the sample gas from which the fluorinating agent has been removed. was introduced into the gas chromatograph 7 for analysis.
- the composition of the components contained in the reaction solution 25 liquid phase
- ratios of carbon tetrabromide, tribromofluoromethane, dibromodifluoromethane, bromotrifluoromethane, and carbon tetrafluoride were obtained. . Table 1 shows the results.
- Examples 2 to 18 Same as Example 1 except that the type and amount of fluorinating agent, the type and amount of elemental metal or salt, the type of solvent, and the reaction temperature in the fluorination reaction were as shown in Tables 1 and 2, respectively. Fluorination reaction and analysis were carried out. Tables 1 and 2 show the results.
- Example 19 to 23 Except that the raw material compound was changed from carbon tetrabromide to tribromofluoromethane, and that the type and amount of the fluorinating agent in the fluorination reaction and the reaction temperature were as shown in Table 2, The fluorination reaction and analysis were carried out in the same manner as in Example 1. Table 2 shows the results.
- the raw material compound is carbon tetrabromide, and the reaction in which tribromofluoromethane is produced (reaction of formula (2) above)
- reaction of formula (2) This is an example using a fluorinating agent in an amount 1.20 to 1.28 times the stoichiometric ratio.
- the raw material compound was tribromofluoromethane, and the stoichiometric ratio in the reaction to produce dibromodifluoromethane was 1.20 to 1.28. This is an example using twice the amount of fluorinating agent.
- the raw material compound is The desired compound, dibromodifluoromethane, was obtained with high selectivity from carbon tetrabromide or tribromofluoromethane.
- Examples 5 and 6 are examples using dichloromethane or 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane as a solvent instead of carbon tetrachloride. . Even when the raw material compound was fluorinated under such conditions, the target compound dibromodifluoromethane was selectively obtained in the same manner as in Examples 1-4.
- Examples 7 and 8 are examples in which the amount of nickel added is 5 mol % or 20 mol %. Even when the raw material compounds were fluorinated under such conditions, the desired compounds of tribromofluoromethane and dibromodifluoromethane were obtained without any problem. In particular, when the amount of nickel to be added is 5 mol%, the ratio of dibromodifluoromethane in the composition of the components contained in the reaction solution is improved, and when the amount of nickel to be added is 20 mol%, The proportion of tribromofluoromethane in the composition of components contained in the reaction solution was improved. From these facts, it can be seen that the composition of the target compound to be produced can be controlled by the amount of nickel added.
- Examples 9 to 12 are examples in which aluminum fluoride, cobalt, iron, or scandium was used as the elemental metal or salt to be added. Even when the raw material compound was fluorinated under such conditions, the desired compound, dibromodifluoromethane, was obtained with high selectivity.
- Examples 13-18 are examples of using 1.20-1.28 times the stoichiometric amount of fluorinating agent in the reaction to produce tribromofluoromethane. Even when the raw material compound was fluorinated under such conditions, the target compound, tribromofluoromethane, was obtained with high selectivity. In particular, from the results of Example 17, it can be seen that the fluorination reaction proceeds without problems even when metal fluorides are added, and tribromofluoromethane can be obtained with high selectivity.
- Comparative Examples 1 to 6 are examples in which the fluorination reaction was performed without adding a metal element or salt.
- the raw material compound is fluorinated under such conditions, at least one of bromotrifluoromethane and carbon tetrafluoride, which are not the target compound, is by-produced, and the composition of the target compound tribromofluoromethane and dibromodifluoromethane ratio decreased.
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Abstract
Description
本発明は、トリブロモフルオロメタン及びジブロモジフルオロメタンの少なくとも一方を選択的に合成することができるブロモフルオロメタンの製造方法を提供することを課題とする。
[1] 周期表の第3周期又は第4周期に属し且つ第3族から第13族のいずれかに属する金属の単体又は塩の存在下で、四臭化炭素及びトリブロモフルオロメタンの少なくとも一方である原料化合物にフッ素化剤を反応させてフッ素化して、トリブロモフルオロメタン及びジブロモジフルオロメタンの少なくとも一方である目的化合物を合成するフッ素化工程を備え、前記原料化合物と前記目的化合物は同一ではないブロモフルオロメタンの製造方法。
[3] 前記ハロゲン間化合物が、三フッ化臭素、五フッ化臭素、五フッ化ヨウ素、及び七フッ化ヨウ素から選ばれる少なくとも1種である[2]に記載のブロモフルオロメタンの製造方法。
[5] 前記金属の単体が、アルミニウム、スカンジウム、鉄、コバルト、及びニッケルから選ばれる少なくとも1種である[1]~[4]のいずれか一項に記載のブロモフルオロメタンの製造方法。
[7] 前記金属の単体又は塩の量が前記原料化合物の量の1モル%以上50モル%以下である[1]~[6]のいずれか一項に記載のブロモフルオロメタンの製造方法。
[9] 前記原料化合物が四臭化炭素であり、その四臭化炭素が有する4個の臭素原子のうち2個をフッ素原子に置換して前記目的化合物を合成する場合は、前記原料化合物のモル量に対する前記フッ素化剤が有するフッ素原子の総モル量の比を1.4以上3.0以下とする[1]~[7]のいずれか一項に記載のブロモフルオロメタンの製造方法。
〔金属〕
本実施形態に係るブロモフルオロメタンの製造方法においては、フッ素化の反応性及び目的化合物の選択率の向上のために、周期表の第3周期又は第4周期に属し且つ第3族から第13族のうちいずれかの族に属する金属の単体又は塩の存在下でフッ素化を行う。これらの金属の単体又は塩が、反応系中に存在するフッ素化剤と[MFA]+[ZFB]-との化学式(Mは金属、Fはフッ素原子、Zは臭素原子又はヨウ素原子、A及びBは任意の係数をそれぞれ示す。)で表される錯体を形成することにより、フッ素化したときに特定の構造の化合物が生成しやすくなり、つまり生成する化合物の選択性が向上することになると考えられる。
これら金属の単体は、1種を単独で用いてもよいし、2種以上を組み合わせて用いてもよい。また、金属の塩は、1種を単独で用いてもよいし、2種以上を組み合わせて用いてもよい。さらに、金属の単体と金属の塩を組み合わせて用いてもよい。
また、フッ素化に供する際の金属の単体、金属の塩の形状は特に限定されるものではなく、例えば、膜状、箔状、ペレット状、塊状、球状、粒状、粉末状でもよい。金属の単体及び金属の塩は、フッ素化剤と反応して、その一部又は全部が金属のフッ化物に転化する場合があるが、原料化合物のフッ素化に対して大きな問題にはならない。
本実施形態に係るブロモフルオロメタンの製造方法においては、原料化合物が有する臭素原子をフッ素原子に置換してフッ素化するために、フッ素化剤が用いられる。フッ素化剤としては、臭素原子又はヨウ素原子を有し、且つ、3個以上のフッ素原子を有するハロゲン間化合物が好ましい。そして、入手容易性や取り扱い容易性の観点から、三フッ化臭素(BrF3)、五フッ化臭素(BrF5)、五フッ化ヨウ素(IF5)、七フッ化ヨウ素(IF7)がより好ましい。フッ素化剤は、1種を単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
CBr4 + (2/3)BrF3 → CBr2F2 + (4/3)Br2・・・(1)
CBr4 + (1/3)BrF3 → CBr3F + (2/3)Br2・・・(2)
原料化合物にフッ素化剤を反応させるフッ素化は、液相反応にて行うことが好ましい。すなわち、原料化合物及びフッ素化剤の少なくとも一方を溶解可能な溶剤を用い、該溶剤に原料化合物及びフッ素化剤の少なくとも一方が溶解してなる反応溶液中でフッ素化反応を行うことが好ましい。
フッ素化剤を反応系内へ供給する方法としては、例えば、滴下漏斗や液体用のマスフローコントローラーを用いて、液体状のフッ素化剤又はフッ素化剤を溶剤に溶解してなるフッ素化剤溶液を反応系内へ供給する方法や、気化器を用いて気化させたフッ素化剤を反応系内へ供給する方法が挙げられる。
また、気化した原料化合物やフッ素化剤を冷却装置によって冷却して液化し、液化した原料化合物やフッ素化剤を反応溶液に戻す還流操作を行いながらフッ素化反応を行ってもよい。
フッ素化反応に使用する溶剤の量は特に限定されるものではないが、溶剤に対する原料化合物、目的化合物、フッ素化剤の溶解性によって適宜決定すればよい。
さらに、フッ素化反応を実施する反応容器は、フッ素化剤に対する耐食性を有する材質であれば、どのような材質で形成されていても差し支えない。反応容器の材質として好適なものとしては、例えば、インコネル(登録商標)、ハステロイ(登録商標)、モネル(登録商標)等のニッケル基合金や、ニッケル、アルミニウム、アルミナ、ステンレス鋼、白金(Pt)等が挙げられる。これらの材質で形成された反応容器の内面には、フッ素樹脂ライニングが施されていてもよい。なお、フッ素樹脂ライニングが内面に施されていれば、フッ素化剤に対する耐食性を有しない材質で反応容器が形成されていてもよい。
〔実施例1〕
図1に示す反応装置を用いて、原料化合物のフッ素化を行った。まず、図1の反応装置の構成について説明する。図1の反応装置は、反応溶液25を収容可能で且つ原料化合物のフッ素化反応が行われる容量50mLのモネル(登録商標)製の反応容器20と、反応容器20の内部の圧力を測定する圧力計21と、反応溶液25の温度を測定する温度計22と、反応溶液25を撹拌する撹拌機24と、反応溶液25の温度を制御する恒温槽26と、反応容器20の内部に液体状のフッ素化剤又はフッ素化剤溶液を滴下する滴下装置23と、滴下装置23から反応容器20の内部に供給される液体状のフッ素化剤又はフッ素化剤溶液の滴下速度を調節する滴下速度調節バルブ28と、反応容器20の内部の気相部を抜き出すための気相部抜き出し口27と、反応容器20の内部の液相部(反応溶液25)を抜き出すための液相部抜き出し口29及び液相部抜き出し用配管30と、気化器1と、を備えている。
なお、ガスクロマトグラフィーにおける四臭化炭素、トリブロモフルオロメタン、ジブロモジフルオロメタン、ブロモトリフルオロメタン、及び四フッ化炭素の定量は、絶対検量線法によって行った。
使用機器 :株式会社島津製作所製のガスクロマトグラフGC-2014
カラム :株式会社島津製作所製のガスクロマトグラフィー用キャピラリカラムPoraPLOT(登録商標) Q-HT
キャリアガス:窒素ガス(流量:2mL/min)
サンプルループの容量:5mL
注入口温度:200℃
カラム温度:120℃
検出器 :熱伝導度検出器(TCD)
検出器温度:200℃
電流値 :150mA
フッ素化反応におけるフッ素化剤の種類及び量、金属単体又は塩の種類及び量、溶剤の種類、反応温度を、それぞれ表1、2に示すとおりとした点を除いては、実施例1と同様にしてフッ素化反応及び分析を行った。結果を表1、2に示す。
原料化合物を四臭化炭素からトリブロモフルオロメタンに変更した点と、フッ素化反応におけるフッ素化剤の種類及び量、並びに反応温度を、それぞれ表2に示すとおりとした点を除いては、実施例1と同様にしてフッ素化反応及び分析を行った。結果を表2に示す。
フッ素化反応において金属単体又は塩を使用しない点と、フッ素化反応におけるフッ素化剤の種類及び量、並びに反応温度を、それぞれ表2に示すとおりとした点を除いては、実施例1と同様にしてフッ素化反応及び分析を行った。結果を表2に示す。
原料化合物を四臭化炭素からトリブロモフルオロメタンに変更した点を除いては、比較例5と同様にしてフッ素化反応及び分析を行った。結果を表2に示す。
表1から分かるように、実施例1~12及び比較例1~4は、原料化合物が四臭化炭素であり、ジブロモジフルオロメタンを生成する反応(上記(1)式の反応)における化学量論比の1.20~1.25倍量のフッ素化剤を使用した例である。
さらに、表2から分かるように、実施例19~23及び比較例6は、原料化合物がトリブロモフルオロメタンであり、ジブロモジフルオロメタンを生成する反応における化学量論比の1.20~1.28倍量のフッ素化剤を使用した例である。
実施例13~18は、トリブロモフルオロメタンを生成する反応における化学量論比の1.20~1.28倍量のフッ素化剤を使用した例である。このような条件で原料化合物のフッ素化を行った場合でも、目的化合物であるトリブロモフルオロメタンが高選択的に得られた。特に、実施例17の結果から、金属のフッ化物を添加した場合でもフッ素化反応は問題なく進行し、トリブロモフルオロメタンが高選択的に得られることが分かる。
2・・・キャリアガスボンベ
3・・・キャリアガス流量制御装置
4・・・サンプル流量制御装置
5・・・キャリアガス圧力制御装置
6・・・フッ素化剤除去槽
7・・・ガスクロマトグラフ
8・・・ガス計量管
9・・・流路切り替えバルブ
20・・・反応容器
21・・・圧力計
22・・・温度計
23・・・滴下装置
24・・・撹拌機
25・・・反応溶液
26・・・恒温槽
27・・・気相部抜き出し口
28・・・滴下速度調節バルブ
29・・・液相部抜き出し口
30・・・液相部抜き出し用配管
Claims (9)
- 周期表の第3周期又は第4周期に属し且つ第3族から第13族のいずれかに属する金属の単体又は塩の存在下で、四臭化炭素及びトリブロモフルオロメタンの少なくとも一方である原料化合物にフッ素化剤を反応させてフッ素化して、トリブロモフルオロメタン及びジブロモジフルオロメタンの少なくとも一方である目的化合物を合成するフッ素化工程を備え、前記原料化合物と前記目的化合物は同一ではないブロモフルオロメタンの製造方法。
- 前記フッ素化剤が、臭素原子又はヨウ素原子を有し且つ3個以上のフッ素原子を有するハロゲン間化合物である請求項1に記載のブロモフルオロメタンの製造方法。
- 前記ハロゲン間化合物が、三フッ化臭素、五フッ化臭素、五フッ化ヨウ素、及び七フッ化ヨウ素から選ばれる少なくとも1種である請求項2に記載のブロモフルオロメタンの製造方法。
- 前記フッ素化工程におけるフッ素化の反応温度が0℃以上100℃以下である請求項1~3のいずれか一項に記載のブロモフルオロメタンの製造方法。
- 前記金属の単体が、アルミニウム、スカンジウム、鉄、コバルト、及びニッケルから選ばれる少なくとも1種である請求項1~4のいずれか一項に記載のブロモフルオロメタンの製造方法。
- 前記金属の塩が、フッ化アルミニウム、フッ化スカンジウム、フッ化鉄、フッ化コバルト、及びフッ化ニッケルから選ばれる少なくとも1種である請求項1~4のいずれか一項に記載のブロモフルオロメタンの製造方法。
- 前記金属の単体又は塩の量が前記原料化合物の量の1モル%以上50モル%以下である請求項1~6のいずれか一項に記載のブロモフルオロメタンの製造方法。
- 前記原料化合物が有する複数の臭素原子のうち1個をフッ素原子に置換して前記目的化合物を合成する場合は、前記原料化合物のモル量に対する前記フッ素化剤が有するフッ素原子の総モル量の比を0.7以上1.5以下とする請求項1~7のいずれか一項に記載のブロモフルオロメタンの製造方法。
- 前記原料化合物が四臭化炭素であり、その四臭化炭素が有する4個の臭素原子のうち2個をフッ素原子に置換して前記目的化合物を合成する場合は、前記原料化合物のモル量に対する前記フッ素化剤が有するフッ素原子の総モル量の比を1.4以上3.0以下とする請求項1~7のいずれか一項に記載のブロモフルオロメタンの製造方法。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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GB805503A (en) * | 1956-03-15 | 1958-12-10 | Dow Chemical Co | Improved fluorination catalyst and process |
JPS5024202A (ja) * | 1973-03-30 | 1975-03-15 | ||
JPS58203924A (ja) * | 1982-05-24 | 1983-11-28 | Kanto Denka Kogyo Kk | 四フツ化炭素の製造法 |
JPH07179373A (ja) * | 1993-12-21 | 1995-07-18 | Chichibu Onoda Cement Corp | 1−ブロモ−2−フルオロエタンの製造方法 |
JP2000505082A (ja) * | 1996-02-23 | 2000-04-25 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | ジハロジフルオロメタンおよびその同族体の製造方法 |
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2022
- 2022-03-28 KR KR1020237039687A patent/KR20240009418A/ko unknown
- 2022-03-28 JP JP2023522293A patent/JPWO2022244481A1/ja active Pending
- 2022-03-28 WO PCT/JP2022/015079 patent/WO2022244481A1/ja active Application Filing
- 2022-04-08 TW TW111113419A patent/TWI816355B/zh active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB805503A (en) * | 1956-03-15 | 1958-12-10 | Dow Chemical Co | Improved fluorination catalyst and process |
JPS5024202A (ja) * | 1973-03-30 | 1975-03-15 | ||
JPS58203924A (ja) * | 1982-05-24 | 1983-11-28 | Kanto Denka Kogyo Kk | 四フツ化炭素の製造法 |
JPH07179373A (ja) * | 1993-12-21 | 1995-07-18 | Chichibu Onoda Cement Corp | 1−ブロモ−2−フルオロエタンの製造方法 |
JP2000505082A (ja) * | 1996-02-23 | 2000-04-25 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | ジハロジフルオロメタンおよびその同族体の製造方法 |
Non-Patent Citations (2)
Title |
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BURTON DONALD J., QUI WEIMING, TAYLOR RICHARD J. K., MCALLISTER GRAEME D.: "Dibromodifluoromethane", ENCYCLOPEDIA OF REAGENTS FOR ORGANIC SYNTHESIS, Chichester , pages 1 - 7, XP093007797, ISBN: 978-0-470-84289-8, DOI: 10.1002/047084289X.rd036.pub2 * |
LEMONNIER GÉRALD: "Tribromofluoromethane", ENCYCLOPEDIA OF REAGENTS FOR ORGANIC SYNTHESIS, Chichester , pages 1 - 4, XP093007793, ISBN: 978-0-470-84289-8, DOI: 10.1002/047084289X.rn01425 * |
Also Published As
Publication number | Publication date |
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JPWO2022244481A1 (ja) | 2022-11-24 |
KR20240009418A (ko) | 2024-01-22 |
TW202308969A (zh) | 2023-03-01 |
TWI816355B (zh) | 2023-09-21 |
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