WO2012117961A1 - フルオロスルホニルイミドアンモニウム塩の製造方法 - Google Patents
フルオロスルホニルイミドアンモニウム塩の製造方法 Download PDFInfo
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- WO2012117961A1 WO2012117961A1 PCT/JP2012/054566 JP2012054566W WO2012117961A1 WO 2012117961 A1 WO2012117961 A1 WO 2012117961A1 JP 2012054566 W JP2012054566 W JP 2012054566W WO 2012117961 A1 WO2012117961 A1 WO 2012117961A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/48—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups having nitrogen atoms of sulfonamide groups further bound to another hetero atom
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/087—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms
- C01B21/092—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms containing also one or more metal atoms
- C01B21/0923—Metal imides or amides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/087—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms
- C01B21/093—Compounds containing nitrogen and non-metals and optionally metals containing one or more hydrogen atoms containing also one or more sulfur atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/36—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of amides of sulfonic acids
- C07C303/40—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of amides of sulfonic acids by reactions not involving the formation of sulfonamide groups
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method for producing a fluorosulfonylimide ammonium salt. More specifically, the present invention relates to a method for efficiently producing a fluorosulfonylimidoammonium salt in which the mixing of metal impurities that degrade electrolyte properties and the like is suppressed to an unlimited extent.
- Fluorosulfonylimide salt is a compound useful in various fields as an electrolyte, an additive to an electrolyte of a fuel cell, a selective electron-absorbing material, etc. (Patent Document 1). Fluorosulfonylimide alkali metal salts and various fluorosulfonylimide onium salts can be obtained by a cation exchange reaction using an alkali metal compound or an onium compound.
- the fluorosulfonylimidoammonium salt is useful as an intermediate for producing a fluorosulfonylimide alkali metal salt or a fluorosulfonylimidoonium salt other than the ammonium salt.
- Non-Patent Document 1 discloses a method of synthesizing di (fluorosulfonyl) imide ammonium salt from di (fluorosulfonyl) imide and ammonia.
- Patent Document 2 di (chlorosulfonyl) imide and an onium compound are reacted to obtain a chlorosulfonylimidoonium salt, which is an element of Group 11 to Group 15, Group 4 to Group 6 (provided that A method for synthesizing a bis [di (fluorosulfonyl) imide] onium salt by reacting with a fluoride containing at least one element selected from the group consisting of arsenic and antimony) is disclosed.
- fluorides used in the production method described in Patent Document 2 zinc fluoride (ZnF 2 ), copper fluoride (CuF 2 ), bismuth fluoride (BiF 2 ), and the like are disclosed. These are all solid materials at room temperature.
- Non-Patent Document 2 or 3 di (fluorosulfonyl) imide is synthesized from di (chlorosulfonyl) imide using arsenic trifluoride (AsF 3 ) and antimony trifluoride (SbF 3 ) as a fluorinating agent. A method is disclosed.
- Di (fluorosulfonyl) imide which is a raw material for the synthesis method described in Non-Patent Document 1, can be obtained by treating a di (fluorosulfonyl) imide salt with a strong acid to make it free.
- di (fluorosulfonyl) imide itself is a strong acid, industrial production is not easy.
- There is a method of synthesizing di (fluorosulfonyl) imide using an ion exchange resin but the process is complicated and not suitable for industrial production.
- it is necessary to remove the metal element derived from fluoride because the metal element derived from fluoride deteriorates the characteristics of the electrolyte.
- Non-Patent Document 2 or 3 In order to completely remove the metal element, a complicated purification operation must be performed. AsF 3 used in the synthesis method described in Non-Patent Document 2 or 3 is relatively expensive. Since As and Sb are both highly toxic elements, workability is difficult. In particular, in the synthesis method using AsF 3 , a compound that is difficult to separate from the target product is by-produced. Therefore, the synthesis method disclosed in Non-Patent Document 2 or 3 is unsuitable for industrial production.
- An object of the present invention is to provide a method for efficiently producing a fluorosulfonylimidoammonium salt in which the mixing of metal impurities that degrade electrolyte properties and the like is suppressed to a minimum, and includes metal impurities that degrade electrolyte properties and the like It is an object of the present invention to provide a method for producing a non-fluorosulfonylimide salt from a fluorosulfonylimide ammonium salt.
- a fluorosulfonylimide ammonium salt was produced by reacting a specific chlorosulfonylimide with a fluorinating agent represented by NH 4 F (HF) p (p represents a real number of 0 to 10). It was found that it can be synthesized easily. In addition, it has been found that a fluorosulfonylimide metal salt that does not contain metal impurities that deteriorate electrolyte properties can be obtained by allowing a metal compound to act on the thus obtained fluorosulfonylimide ammonium salt to exchange ions. It was. The present invention has been completed based on these findings.
- the present invention includes the following. (1) A compound represented by the formula [I] (hereinafter sometimes referred to as the compound [I]) and a fluorinating agent represented by the formula [III] (hereinafter referred to as a fluorinating agent [III]) And a method for producing a fluorosulfonylimide ammonium salt represented by the formula [II] (hereinafter sometimes referred to as a compound [II]).
- At least one compound selected from the group consisting of a metal compound, an onium compound and an organic amine compound in the fluorosulfonylimide ammonium salt represented by the formula [II] obtained by the method described in (1) above A process for producing a fluorosulfonylimide salt represented by the formula [IV] (hereinafter sometimes referred to as the compound [IV]).
- R 1 represents a fluorinated alkyl group having 1 to 6 carbon atoms, a fluorine atom, or a chlorine atom.
- R 2 represents a fluorinated alkyl group having 1 to 6 carbon atoms or a fluorine atom.
- M n + represents a metal cation or onium cation (excluding NH 4 + )
- n corresponds to the valence of the metal cation or onium cation (excluding NH 4 + )
- 1 to 4 represents an integer of 4
- R 2 represents the same as in formula [II].
- a fluorosulfonylimidoammonium salt can be produced industrially efficiently.
- the other fluorosulfonyl imide salt which does not contain the metal impurity which reduces electrolyte characteristics etc. can be manufactured by carrying out the cation exchange reaction of the fluoro sulfonyl imide ammonium salt obtained in this way.
- the method for producing compound [II] according to the present invention comprises reacting compound [I] with fluorinating agent [III].
- the compound [I] used in the present invention is a compound represented by the formula [I].
- R 1 represents a fluorinated alkyl group having 1 to 6 carbon atoms, a fluorine atom, or a chlorine atom. Of these, R 1 is preferably a chlorine atom.
- the number of carbon atoms constituting the fluorinated alkyl group in R 1 is 1 to 6, preferably 1 to 4, more preferably 1 to 2.
- Fluoroalkyl groups include fluoromethyl group, difluoromethyl group, trifluoromethyl group, fluoroethyl group, difluoroethyl group, 2,2,2-trifluoroethyl group, pentafluoroethyl group, 3,3,3- Trifluoropropyl group, perfluoro-n-propyl group, fluoropropyl group, perfluoroisopropyl group, fluorobutyl group, 3,3,4,4,4-pentafluorobutyl group, perfluoro-n-butyl group, perfluoroisobutyl group, Perfluoro-t-butyl group, perfluoro-sec-butyl group, fluoropentyl group, perfluoropentyl group, perfluoroisopentyl group, perfluor
- a trifluoromethyl group, a pentafluoroethyl group or a perfluoro-n-propyl group is preferable, and a trifluoromethyl group or a pentafluoroethyl group is more preferable.
- the compound [I] include N- (chlorosulfonyl) -N- (fluorosulfonyl) imide, di (chlorosulfonyl) imide, N- (chlorosulfonyl) -N- (trifluoromethylsulfonyl) imide, N And-(chlorosulfonyl) -N- (pentafluoroethylsulfonyl) imide, N- (chlorosulfonyl) -N- (perfluoro-n-propylsulfonyl) imide, and the like.
- Compound [I] may be a commercially available product, or may be synthesized by the method described in Z. Anorg. Allg. Chem 2005, 631, 55-59, for example.
- di (chlorosulfonyl) imide which is one of the compounds represented by the formula [I]
- N- (chlorosulfonyl) -N- (fluoroalkylsulfonyl) imide can be obtained by reaction of chlorosulfonyl isocyanate and fluorinated alkyl sulfonic acid, reaction of fluorinated alkyl sulfonyl isocyanate and chlorosulfonic acid, or the like. it can.
- the fluorinating agent [III] used in the present invention is a compound represented by the formula [III].
- p represents a real number of 0 to 10, preferably a real number of 0 to 4, and more preferably an integer of 0 to 4.
- Specific examples of the fluorinating agent [III] include NH 4 F, NH 4 F HF, NH 4 F 2HF, NH 4 F 3HF, NH 4 F 4HF and the like. Of these, NH 4 F and NH 4 F HF are preferred.
- NH 4 F can be obtained by precipitation through anhydrous hydrogen fluoride through ammonia. It can also be obtained by heating and sublimating a mixture of ammonium chloride and sodium fluoride.
- NH 4 F HF, NH 4 F 2HF, and NH 4 F 3HF can be obtained through anhydrous hydrogen fluoride.
- the amount of the fluorinating agent [III] to be used is preferably 1 mol to 20 mol, more preferably 1 mol to 10 mol, still more preferably 1 mol to 5 mol, relative to 1 mol of the compound [I].
- the reaction of the compound [I] and the fluorinating agent [III] can be carried out in an organic solvent or without a solvent.
- the organic solvent that can be used in the reaction is not particularly limited as long as it does not inhibit the fluorination reaction.
- a polar solvent examples include acetonitrile, ethyl acetate, isopropyl acetate or butyl acetate.
- the organic solvent is preferably used after dehydration. In the presence of water, compound [I] is likely to be decomposed, and the yield may be reduced.
- the temperature during the fluorination reaction can be appropriately adjusted according to the progress of the reaction, but is preferably ⁇ 40 ° C. to 200 ° C., more preferably ⁇ 20 ° C. to 100 ° C.
- the time required for the reaction varies depending on the reaction scale, but is preferably 0.1 hour to 48 hours, more preferably 0.5 hour to 24 hours.
- Compound [II] can be obtained by the production method according to the present invention.
- Compound [II] is a fluorosulfonylimide ammonium salt represented by the formula [II].
- R 2 represents a fluorinated alkyl group having 1 to 6 carbon atoms or a fluorine atom.
- the fluorinated alkyl group the same groups as those described in the description of R 1 can be mentioned.
- the compound represented by the formula [II] include di (fluorosulfonyl) imide ammonium salt, N- (fluorosulfonyl) -N- (trifluoromethylsulfonyl) imide ammonium salt, N- (fluorosulfonyl)- N- (pentafluoroethylsulfonyl) imidoammonium salt, N- (fluorosulfonyl) -N- (perfluoro-n-propylsulfonyl) imidoammonium salt and the like can be mentioned. Of these, di (fluorosulfonyl) imidoammonium salt is preferred.
- Compound [II] is useful as an intermediate for producing a fluorosulfonylimide salt represented by the formula [IV].
- Compound [II] is an ion constituting an electrochemical device such as a secondary battery such as a primary battery or a lithium (ion) secondary battery, an electrolytic capacitor, an electric double layer capacitor, a fuel cell, a solar cell, or an electrochromic element. It is also useful as a conductor material.
- the compound [II] obtained by the production method is reacted with at least one compound selected from the group consisting of a metal compound, an onium compound and an organic amine compound (hereinafter referred to as “the compound [II]”). It may be expressed as a cation exchange reaction.).
- This cation exchange reaction can be carried out by mixing compound [II] with at least one compound selected from the group consisting of metal compounds, onium compounds and organic amine compounds in the presence of a solvent.
- the at least one compound is preferably selected from the group consisting of an alkali metal compound, an onium compound, and an organic amine compound, and more preferably an alkali metal compound.
- the metal compound used in the cation exchange reaction is not particularly limited as long as it undergoes a cation exchange reaction with compound [II], but is preferably an alkali metal compound.
- alkali metal compounds include hydroxides such as LiOH, NaOH, KOH, RbOH, and CsOH; carbonates such as Li 2 CO 3 , Na 2 CO 3 , K 2 CO 3 , Rb 2 CO 3 , and Cs 2 CO 3 ; Hydrogen carbonate such as LiHCO 3 , NaHCO 3 , KHCO 3 , RbHCO 3 , CsHCO 3 ; Chloride such as LiCl, NaCl, KCl, RbCl, CsCl; Bromide such as LiBr, NaBr, KBr, RbBr, CsBr; LiF, NaF , Fluorides such as KF, RbF, CsF; alkoxide compounds such as CH 3 OLi, EtOLi, t-BuOK, t
- hydroxides are preferred.
- a hydroxide ammonia is produced as a by-product in the cation exchange reaction. Therefore, the equilibrium can be brought into a state where the cation exchange reaction is promoted by removing the ammonia under reduced pressure.
- an alkali metal compound is used, the inorganic salt produced as a by-product can be removed by filtration or washing with water, so that it can be easily purified.
- the amount of the alkali metal compound to be used is preferably 1 mol to 10 mol, more preferably 1 mol to 5 mol, per 1 mol of compound [II].
- onium compounds used in the cation exchange reaction include imidazolium compounds, pyrazolium compounds, pyridinium compounds, pyrrolidinium compounds, piperidinium compounds, morpholinium compounds, quaternary ammonium compounds, and other nitrogen-based onium compounds; quaternary phosphonium compounds and tertiary phosphine compounds.
- Examples thereof include phosphorus onium compounds such as: sulfur onium compounds such as sulfonium compounds, guanidinium compounds, isouronium compounds, and isothiouronium compounds. Of these, organic onium compounds are preferred.
- an onium compound is a thing which does not contain the metal element which reduces electrolyte characteristics etc.
- imidazolium compounds include 1,3-dimethylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium chloride, 1-hexyl-3-methylimidazolium chloride.
- 1-octyl-3-methylimidazolium chloride 1-allyl-3-ethylimidazolium chloride, 1-allyl-3-butylimidazolium chloride, 1,3-diallylimidazolium chloride, 1-ethyl-2,3 -Chlorides such as dimethylimidazolium chloride, 1-butyl-2,3-dimethylimidazolium chloride, 1-hexyl-2,3-dimethylimidazolium chloride; 1,3-dimethylimidazolium bromide, 1-ethyl-3 -Methylimidazolium bromide, 1-buty -3-Methylimidazolium bromide, 1-hexyl-3-methylimidazolium bromide, 1-octyl-3-methylimidazolium bromide, 1-allyl-3-ethylimidazolium bromide, 1-allyl-3-butylimidazolium Bromide, 1,3
- pyrazolium compound examples include 2-ethyl-1,3,5-trimethylpyrazolium chloride, 2-propyl-1,3,5-trimethylpyrazolium chloride, 2-butyl-1,3,5- Chlorides such as trimethylpyrazolium chloride and 2-hexyl-1,3,5-trimethylpyrazolium chloride; 2-ethyl-1,3,5-trimethylpyrazolium bromide, 2-propyl-1,3, Bromides such as 5-trimethylpyrazolium bromide, 2-butyl-1,3,5-trimethylpyrazolium bromide, 2-hexyl-1,3,5-trimethylpyrazolium bromide; 2-ethyl-1,3 , 5-trimethylpyrazolium hydroxide, 2-propyl-1,3,5-trimethylpyrazolium hydroxide, 2-butyl-1,3,5-to It can be exemplified hydroxides such as; methyl pyrazolium hydroxide, 2-hexyl-1,3,5-
- pyridinium compound examples include 1-acetonylpyridinium chloride, 1-aminopyridinium iodide, 2-benzyloxy-1-methylpyridinium trifluoromethanesulfonate, 1,1 ′-[biphenyl-4,4′-diylbis (Methylene)] bis (4,4′-bipyridinium) bis (hexafluorophosphate), 1,1 ′-[biphenyl-4,4′-diylbis (methylene)] bis (4,4′-bipyridinium) dibromide, 1,1′-bis (2,4-dinitrophenyl) -4,4′-bipyridinium dichloride, bis (2,4,6-trimethylpyridine) bromonium hexafluorophosphate, 2-bromo-1-tetrafluoroborate Ethylpyridinium, 4-bromopyridine hydrobromide, 4-bromopyri Hydrochloride
- N-octadecyl-4-stilbazole bromide 1- (10,12-pentacosadiynyl) pyridinium bromide, 1-phenacylpyridinium bromide, 1,1 ′-[1,4-phenylenebis (methylene)] bis (4,4′-bipyridinium) bis (hexafluorophosphate), 1,1 ′-[1,4-phenylenebis (methylene)] bis (4,4′-bipyridinium) dibromide, N-phenylnicotinamide hydrochloride 1-propylpyridinium chloride, pyridine-2-carbonyl chloride hydrochloride, pyridine-2-carboxylic acid hydrochloride, pyridine hydrobromide, pyridine hydrochloride, pyridinium bromide perbromide, pyridinium chlorochromate, pyridinium dichromate , Pyridinium fluorochromate, pyridin
- pyrrolidinium compound examples include 1-butyl-1-methylpyrrolidinium bromide, 1-butyl-1-methylpyrrolidinium chloride, 1-butyl-1-propylpyrrolidinium bromide, 1-butyl-1- And propyl pyrrolidinium chloride.
- piperidinium compound examples include 1-butyl-1-methylpiperidinium bromide.
- morpholinium compound examples include 4-propyl-4-methylmorpholinium chloride, 4- (2-methoxyethyl) -4-methylmorpholinium chloride, 4-propyl-4-methylmorpholinium bromide, 4 -(2-methoxyethyl) -4-methylmorpholinium bromide, 4-propyl-4-methylmorpholinium hydroxide, 4- (2-methoxyethyl) -4-methylmorpholinium hydroxide, etc. Can do.
- quaternary ammonium compound examples include fluorine such as propyltrimethylammonium chloride, diethyl-2-methoxyethylmethylammonium fluoride, methyltrioctylammonium fluoride, cyclohexyltrimethylammonium fluoride, and 2-hydroxyethyltrimethylammonium fluoride.
- fluorine such as propyltrimethylammonium chloride, diethyl-2-methoxyethylmethylammonium fluoride, methyltrioctylammonium fluoride, cyclohexyltrimethylammonium fluoride, and 2-hydroxyethyltrimethylammonium fluoride.
- Chlorides such as propyltrimethylammonium chloride, diethyl-2-methoxyethylmethylammonium chloride, methyltrioctylammonium chloride, cyclohexyltrimethylammonium chloride, 2-hydroxyethyltrimethylammonium chloride; propyltrimethylammonium bromide, diethyl-2-methoxy Ethylmethylammonium bromide, methyltrioctylan Bromides such as nium bromide, cyclohexyltrimethylammonium bromide, 2-hydroxyethyltrimethylammonium bromide; propyltrimethylammonium iodide, diethyl-2-methoxyethylmethylammonium iodide, methyltrioctylammonium iodide, cyclohexyltrimethylammonium iodide, 2 -Iodides such as hydroxyethyltrimethylammoni
- phosphonium compounds include acetonyltriphenylphosphonium chloride, allyltriphenylphosphonium bromide, allyltriphenylphosphonium chloride, amyltriphenylphosphonium bromide, 1H-benzotriazol-1-yloxytripyrrolidinophosphonium hexafluorophosphate 1H-benzotriazol-1-yloxytris (dimethylamino) phosphonium hexafluorophosphate, benzyltriphenylphosphonium bromide, benzyltriphenylphosphonium chloride, (bromomethyl) triphenylphosphonium bromide, 3-bromopropyltriphenylphosphonium bromide, trans-2-butene-1,4-bis (triphenylphosphonium chloride), butyl Riphenylphosphonium bromide, (4-carboxybutyl) triphenylphosphonium bromide, (3
- Tetraphenylphosphonium bromide tetraphenylphosphonium chloride, tetraphenylphosphonium iodide, tetraphenylphosphonium tetraphenylborate, tetraphenylphosphonium tetra-p-tolylborate, tributyl (cyanomethyl) phosphonium chloride, tributyl (1,3-dioxolane-2- Ylmethyl) phosphonium bromide, tributyldodecylphosphonium bromide, tributylhexadecylphosphonium bromide, tributylmethylphosphonium iodide, tributyl-n-octylphosphonium bromide, tri-tert-butylphosphonium tetrafluoroborate, tri-tert-butylphosphonium tetraphenylborate Lato, tricyclohexylphosphon
- sulfonium compound examples include dimethylsulfoniopropionate, trimethylsulfonyl chloride, trimethylsulfonyl bromide, trimethylsulfonyl iodide and the like.
- guanidinium compound examples include guanidinium chloride, 2-ethyl-1,1,3,3-tetramethylguanidinium chloride, guanidinium bromide, 2-ethyl-1,1,3,3-tetra Examples thereof include methylguanidinium bromide, guanidinium hydroxide, 2-ethyl-1,1,3,3-tetramethylguanidinium hydroxide.
- isouronium compounds include 2-ethyl-1,1,3,3-tetramethylisouronium chloride, 2-ethyl-1,1,3,3-tetramethylisouronium bromide, 2-ethyl- Examples include 1,1,3,3-tetramethylisouronium hydroxide.
- isothiouronium compounds include 2-ethyl-1,1,3,3-tetramethylisothiouronium chloride, 2-ethyl-1,1,3,3-tetramethylisothiouronium bromide, 2- And ethyl-1,1,3,3-tetramethylisothiouronium hydroxide.
- onium hydroxide compounds are preferred.
- ammonia is produced as a by-product in the cation exchange reaction, so that the equilibrium can be brought into a state where the cation exchange reaction is promoted by removing the ammonia under reduced pressure.
- the inorganic salt produced as a by-product can be removed by filtration or washing with water, so that it can be easily purified.
- the amount of the onium compound to be used is preferably 0.3 mol to 10 mol, more preferably 0.3 mol to 5 mol, per 1 mol of compound [II].
- Organic amine compounds used in the cation exchange reaction include tertiary amines such as trimethylamine, triethylamine, and tributylamine, cyclic amines such as 1,4-diazabicyclo [2.2.2] octane, trimethylamine hydrochloride, triethylamine hydrochloride Tertiary amines such as salts, tributylamine hydrochloride, 1,4-diazabicyclo [2.2.2] octane hydrochloride, trimethylamine hydrobromide, triethylamine hydrobromide, tributylamine hydrobromide And cyclic amine salts such as 1,4-diazabicyclo [2.2.2] octane hydrobromide.
- tertiary amines such as trimethylamine, triethylamine, and tributylamine
- cyclic amines such as 1,4-diazabicyclo [2.2.2] oc
- tertiary amines and cyclic amines are preferred.
- ammonia is produced as a by-product in the cation exchange reaction. Therefore, the equilibrium can be brought into a state where the reaction is promoted by removing the ammonia under reduced pressure.
- the inorganic salt produced as a by-product can be removed by filtration or washing with water, so that it can be easily purified.
- the amount of the organic amine compound to be used is preferably 0.3 mol to 10 mol, more preferably 0.3 mol to 5 mol, per 1 mol of compound [II].
- the organic solvent used for the cation exchange reaction is not particularly limited.
- acetonitrile, ethyl acetate, isopropyl acetate or butyl acetate can be used for both the reaction of compound [I] with hydrogen fluoride and the cation exchange reaction of compound [II]. This is preferable because the above reaction can be carried out continuously in the same solvent.
- the temperature during the cation exchange reaction is not particularly limited, but is preferably 0 ° C. to 200 ° C., more preferably 10 ° C. to 100 ° C.
- the time required for the reaction varies depending on the reaction scale, but is preferably 0.1 hour to 48 hours, more preferably 0.5 hour to 24 hours.
- the reaction can be carried out under normal pressure, but when using a compound having hydroxide ions during cation exchange, if it is carried out under reduced pressure, ammonia produced as a by-product is removed, the equilibrium is biased, and the target product is easily synthesized. .
- the reaction pressure is not particularly limited, but is preferably from atmospheric pressure to 0.01 torr, and more preferably a degree of pressure reduction such that the solvent is refluxed at 0 ° C. to 100 ° C.
- the reaction vessel is made of glass or a resin such as a fluororesin or polyethylene, but when the fluorinating agent p represented by the formula [III] is 1 or more, the yield decreases if it is made of glass. Product made from fluororesin is more preferable.
- Compound [IV] can be obtained by the above cation exchange reaction.
- Compound [IV] is a fluorosulfonylimide salt represented by the formula [IV].
- M n + represents a metal cation or an onium cation (excluding NH 4 + )
- n corresponds to the valence of the metal cation or onium cation (excluding NH 4 + )
- 1 to 4 In the formula (preferably an integer of 1 to 3), and R 2 represents the same as in formula [II].
- the metal cation is not particularly limited, but is preferably an alkali metal cation.
- alkali metal cation examples include a lithium cation, a sodium cation, a potassium cation, a rubidium cation, and a cesium cation. Of these, lithium cation, sodium cation and potassium cation are preferred.
- Onium cations include phosphonium cations, oxonium cations, sulfonium cations, fluoronium cations, chloronium cations, bromonium cations, iodonium cations, selenonium cations, telluronium cations, arsonium cations , Stibonium cation, bismuthonium cation; iminium cation, diazenium cation, nitronium cation, diazonium cation, nitrosonium cation, hydrazonium dication, diazenium dication, diazonium dication; imidazolium cation, pyridinium cation Quaternary ammonium cation, tertiary ammonium cation, secondary ammonium cation, primary ammonium cation, piperidini Mukachion, mention may be made of pyrrolidinium cations,
- the onium cation is preferably an onium cation having an organic group, that is, an organic onium cation.
- the organic group include a saturated or unsaturated hydrocarbon group.
- a saturated or unsaturated hydrocarbon group may be linear, branched or cyclic.
- the saturated or unsaturated hydrocarbon group preferably has 1 to 18 carbon atoms, more preferably 1 to 8 carbon atoms.
- the organic group is preferably a hydrogen atom, a fluorine atom, an amino group, an imino group, an amide group, an ether group, a hydroxyl group, an ester group, a hydroxyl group, a carboxyl group, a carbamoyl group, a cyano as an atom or an atomic group constituting the organic group.
- These atoms or atomic groups may have only one, or may have two or more.
- the bond may be formed between the main skeleton of the organic group, or between the main skeleton of the organic group and the above-described atomic group, or Or formed between the atomic groups.
- Examples of the onium cation having an organic group include 1,3-dimethylimidazolium cation, 1-ethyl-3-methylimidazolium cation, 1-propyl-3-methylimidazolium cation, and 1-butyl-3-methylimidazolium cation.
- Tertiary ammonium cations such as trimethylammonium cation, triethylammonium cation, tributylammonium cation, diethylmethylammonium cation, dimethylethylammonium cation, dibutylmethylammonium cation, 4-aza-1-azoniabicyclo [2.2.2] octane cation; Secondary ammonium cations such as dimethylammonium cation, diethylammonium cation, dibutylammonium cation; Primary ammonium cations such as methylammonium cation, ethylammonium cation, butylammonium cation, hexylammonium cation, octylammonium cation;
- Organic ammonium cations such as N-methoxytrimethylammonium cation, N-ethoxytrimethylammonium cation, and N-propoxytrimethylammonium cation; Piperidinium cations such as 1-propyl-1-methylpiperidinium cation, 1- (2-methoxyethyl) -1-methylpiperidinium cation; Pylori such as 1-propyl-1-methylpyrrolidinium cation, 1-butyl-1-methylpyrrolidinium cation, 1-hexyl-1-methylpyrrolidinium cation, 1-octyl-1-methylpyrrolidinium cation Dinium cation; Morpholinium cations such as 4-propyl-4-methylmorpholinium cation, 4- (2-methoxyethyl) -4-methylmorpholinium cation; 2-ethyl-1,3,5-trimethylpyrazolium cation, 2-propyl-1,3,5-trimethylpyrazol
- Guanidinium cations such as guanidinium, 2-ethyl-1,1,3,3-tetramethylguanidinium cation; Sulfonium cations such as trimethylsulfonium cation; Phosphonium cations such as trihexyl tetradecylphosphonium cation; Isouronium cations such as 2-ethyl-1,1,3,3-tetramethylisouronium cation; and isothiouronium cations such as 2-ethyl-1,1,3,3-tetramethylisothiouronium cation Can be mentioned.
- the onium cation is preferably one that does not contain a metal element that degrades the electrolyte characteristics and the like.
- the compound [IV] include di (fluorosulfonyl) imide lithium salt, N- (fluorosulfonyl) -N- (trifluoromethylsulfonyl) imide lithium salt, N- (fluorosulfonyl) -N- (pentafluoro Ethylsulfonyl) imide lithium salt, N- (fluorosulfonyl) -N- (perfluoro-n-propylsulfonyl) imide lithium salt; di (fluorosulfonyl) imide potassium salt, N- (fluorosulfonyl) -N- (trifluoromethyl) Sulfonyl) imide potassium salt, N- (fluorosulfonyl) -N- (pentafluoroethylsulfonyl) imide potassium salt, N- (fluorosulfonyl) -N- (perfluoro-n-propyls
- the compound [IV] obtained according to the production method of the present invention has a smaller amount of metal impurities that degrade the electrolyte properties and the like than those obtained by the conventional method, so that secondary batteries such as primary batteries and lithium ion secondary batteries can be used. It can be suitably used as a material for ion conductors constituting electrochemical devices such as batteries, electrolytic capacitors, electric double layer capacitors, fuel cells, solar cells, and electrochromic elements.
- Synthesis example 1 Synthesis of di (chlorosulfonyl) imide
- a 500 ml reaction vessel equipped with a stirrer, a thermometer and a reflux tube 123.9 g (1.10 mol) of chlorosulfonic acid (ClSO 3 H) and 98.1 g (0.70 mol) of chlorosulfonyl isocyanate were charged.
- the mixture was heated to 130 ° C. over 2.5 hours with stirring, and reacted at the same temperature for 9 hours.
- distillation under reduced pressure was performed to fractionate a fraction of 98.5 ° C. to 101 ° C./4.2 torr. 77.9 g (0.36 mol) of di (chlorosulfonyl) imide was obtained as a colorless and transparent liquid.
- Example 1 Synthesis of di (fluorosulfonyl) imidoammonium salt
- a fluororesin reaction vessel 1.07 g (5.0 mmol) of di (chlorosulfonyl) imide obtained in Synthesis Example 1 was charged.
- 10 ml of acetonitrile and 0.89 g (24.0 mmol) of NH 4 F were added to this.
- the reaction mixture was cooled to room temperature, insoluble matters were filtered, and washed with 10 ml of acetonitrile.
- the solvent was then distilled off under reduced pressure.
- the obtained substance was quantitatively analyzed by 19 F-NMR, it was confirmed that the substance contained 0.95 g (4.8 mmol) of di (fluorosulfonyl) imidoammonium salt.
- Example 2 Synthesis of di (fluorosulfonyl) imidoammonium salt
- a fluororesin reaction vessel 1.07 g (5.0 mmol) of di (chlorosulfonyl) imide obtained in Synthesis Example 1 was charged. To this were added 10 ml of acetonitrile and 1.37 g (24.0 mmol) of NH 4 F HF, and the mixture was refluxed at 80 to 84 ° C. for 4 hours to be reacted. After completion of the reaction, the reaction mixture was cooled to room temperature, insoluble matters were filtered, and washed with 10 ml of acetonitrile. The solvent was then distilled off under reduced pressure. When the obtained substance was quantitatively analyzed by 19 F-NMR, it was confirmed that the substance contained 0.94 g (4.8 mmol) of di (fluorosulfonyl) imidoammonium salt.
- Example 3 Synthesis of di (fluorosulfonyl) imide potassium salt
- a reaction vessel was charged with a 20% aqueous solution of 1.98 g (10.0 mmol) of di (fluorosulfonyl) imidoammonium salt, 10 ml of butyl acetate, and 1.40 g (25.0 mmol) of potassium hydroxide, and 1 at 65 torr at 37 ° C. Reflux for hours.
- the reaction was cooled to 25 ° C. Thereafter, the solution was separated, and the aqueous phase was extracted three times with 10 ml of butyl acetate.
- the organic phases obtained in each extraction operation were combined and the solvent was distilled off under reduced pressure. 1.93 g of di (fluorosulfonyl) imide potassium salt was obtained.
- all of the products were potassium salts and did not contain ammonium ions.
- Example 4 Synthesis of di (fluorosulfonyl) imide lithium salt
- di (fluorosulfonyl) imidoammonium salt To 3.8 g (18.9 mmol) of di (fluorosulfonyl) imidoammonium salt were added 38 ml of butyl acetate, 2.4 g (56.7 mmol) of lithium hydroxide monohydrate and 14.3 ml of water, and 75 torr, 40 The mixture was heated at reflux for 1 hour. The reaction was cooled to 25 ° C. Thereafter, the solution was separated, and the aqueous phase was extracted three times with 19 ml of butyl acetate. The organic phases obtained in each extraction operation were combined and washed with 1.5 ml of water. Thereafter, the solvent was distilled off under reduced pressure. 3.4 g of di (fluorosulfonyl) imide lithium salt was obtained. As a result of quantitative analysis by cation chromatography, all the products were lithium salts and did not
- Example 5 Synthesis of di (fluorosulfonyl) imide sodium salt
- 160 ml of butyl acetate and a 20% aqueous solution of 40.0 g (200.0 mmol) of sodium hydroxide were added and heated at 65 torr at 37 ° C. for 1 hour. Refluxed.
- the reaction was cooled to 25 ° C. Thereafter, the solution was separated, and the aqueous phase was extracted three times with 80 ml of butyl acetate.
- the organic phases obtained in each extraction operation were combined and the solvent was distilled off under reduced pressure.
- a fluorosulfonylimidoammonium salt can be produced industrially efficiently.
- the other fluorosulfonyl imide salt which does not contain the metal impurity which reduces electrolyte characteristics etc. can be manufactured by carrying out the cation exchange reaction of the fluoro sulfonyl imide ammonium salt obtained in this way.
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Abstract
Description
本願は、2011年3月3日に、日本に出願された特願2011-046738号に基づき優先権を主張し、その内容をここに援用する。
特許文献2には、ジ(クロロスルホニル)イミドとオニウム化合物とを反応させてクロロスルホニルイミドオニウム塩を得、これと第11族~第15族、第4周期~第6周期の元素(但し、砒素およびアンチモンは除く)からなる群から選ばれる少なくとも1種の元素を含むフッ化物とを反応させることによってビス[ジ(フルオロスルホニル)イミド]オニウム塩を合成する方法が開示されている。特許文献2に記載の製法で用いられるフッ化物として、フッ化亜鉛(ZnF2)、フッ化銅(CuF2)、フッ化ビスマス(BiF2)などが開示されている。これらはいずれも常温固体の物質である。
また、非特許文献2または3には、三フッ化ヒ素(AsF3)、三フッ化アンチモン(SbF3)をフッ素化剤として用いてジ(クロロスルホニル)イミドからジ(フルオロスルホニル)イミドを合成する方法が開示されている。
特許文献2に記載の合成法では、前記フッ化物由来の金属元素が電解質の特性を低下させるので、フッ化物由来の金属元素を取り除くことが必要である。当該金属元素を完全に除去するためには、煩雑な精製操作を行わなければならない。
非特許文献2または3に記載の合成法に使用されるAsF3は比較的に高価である。AsおよびSbはいずれも高い毒性を有する元素であるので、作業性に難がある。特にAsF3を用いる合成法では、目的生成物との分離が困難な化合物が副生する。そのため、非特許文献2または3に開示される合成法は工業的生産に不適である。
(1) 式〔I〕で表される化合物(以下、化合物〔I〕と表記することがある。)と、式〔III〕で表されるフッ素化剤(以下、フッ素化剤〔III〕と表記することがある。)とを反応させることを含む式〔II〕で表されるフルオロスルホニルイミドアンモニウム塩(以下、化合物〔II〕と表記することがある。)の製造方法。
(2) 前記(1)に記載の方法で得られた式〔II〕で表されるフルオロスルホニルイミドアンモニウム塩に、金属化合物、オニウム化合物および有機アミン化合物からなる群から選ばれる少なくとも1種の化合物を反応させることを含む式〔IV〕で表されるフルオロスルホニルイミド塩(以下、化合物〔IV〕と表記することがある。)の製造方法。
(3) 前記少なくとも1種の化合物がアルカリ金属化合物、オニウム化合物および有機アミン化合物からなる群から選ばれる(2)に記載のフルオロスルホニルイミド塩の製造方法。
本発明に係る化合物〔II〕の製造方法は、化合物〔I〕と、フッ素化剤〔III〕とを反応させることを含むものである。
また、N-(クロロスルホニル)-N-(フルオロアルキルスルホニル)イミドは、クロロスルホニルイソシアネートとフッ化アルキルスルホン酸との反応や、フッ化アルキルスルホニルイソシアネートとクロロスルホン酸との反応などによって得ることができる。
NH4F HF、NH4F 2HF、NH4F 3HF、NH4F 4HFなどは、無水フッ化水素に任意の割合でアンモニアを通じて得ることができるし、フッ化水素酸(水溶液)にアンモニア水溶液を混合し、水を蒸発濃縮して得ることもできる。また、NH4Fを熱分解して得ることができる。更に、NH4F HF、NH4F 2HF、NH4F 3HFに無水フッ化水素を通じて得ることができる。
フッ素化剤〔III〕の使用量は、化合物〔I〕1モルに対して、好ましくは1モル~20モル、より好ましくは1モル~10モル、さらに好ましくは1モル~5モルである。
当該有機溶媒は脱水して使用することが好ましい。水が存在すると、化合物〔I〕が分解しやすくなるので、収率が低下するおそれがある。
式〔II〕で表される化合物の具体例としては、ジ(フルオロスルホニル)イミドアンモニウム塩、N-(フルオロスルホニル)-N-(トリフルオロメチルスルホニル)イミドアンモニウム塩、N-(フルオロスルホニル)-N-(ペンタフルオロエチルスルホニル)イミドアンモニウム塩、N-(フルオロスルホニル)-N-(ペルフルオロ-n-プロピルスルホニル)イミドアンモニウム塩などを挙げることができる。これらのうちジ(フルオロスルホニル)イミドアンモニウム塩が好ましい。
本発明に係る化合物〔IV〕の製造方法は、前記製造方法によって得られる化合物〔II〕に、金属化合物、オニウム化合物および有機アミン化合物からなる群から選ばれる少なくとも1種の化合物を反応(以下、カチオン交換反応と表記することがある。)させることを含むものである。
アルカリ金属化合物の使用量は、化合物〔II〕1モルに対して、好ましくは1モル~10モル、より好ましくは1モル~5モルである。
メチルピリジニウムトリフルオロメタンスルホナート、ジラール試薬P、1-ヘキサデシル-4-メチルピリジニウムクロリド水和物、ヘキサデシルピリジニウムブロミド水和物、ヘキサデシルピリジニウムクロリド一水和物、イソニコチノイルクロリド塩酸塩、MDEPAP、1-メチルピリジニウム-2-アルドキシムクロリド、1-メチルピリジニウムクロリド、NDEPAP、1-オクタデシル-4-(4-フェニル-1,3-ブタジエニル)ピリジニウムブロミド、
ピペリジニウム化合物の具体例としては、1-ブチル-1-メチルピペリジニウムブロミドなどを挙げることができる。
モルホリニウム化合物の具体例としては、4-プロピル-4-メチルモルホリニウムクロリド、4-(2-メトキシエチル)-4-メチルモルホリニウムクロリド、4-プロピル-4-メチルモルホリニウムブロミド、4-(2-メトキシエチル)-4-メチルモルホリニウムブロミド、4-プロピル-4-メチルモルホリニウムヒドロキシド、4-(2-メトキシエチル)-4-メチルモルホリニウムヒドロキシドなどを挙げることができる。
また、ホスホニウムカチオンを誘導できる、トリメチルホスフィン、トリエチルホスフィン、トリブチルホスフィン、トリフェニルホスフィンなどの有機ホスフィン化合物などを挙げることができる。
これらのうち、三級アミン、環状アミンが好ましい。三級アミン、環状アミンを用いると、カチオン交換反応ではアンモニアが副生するので、このアンモニアを減圧除去することによって平衡を反応が促進させる状態にすることができる。三級アミン塩、環状アミン塩を用いると副生する無機塩を濾過や水洗で除去できるので容易に精製することができる。
反応は、常圧下でも実施可能であるが、カチオン交換時に水酸化物イオンを有する化合物を使用する場合、減圧下で実施すると副生するアンモニアが除去され、平衡が偏り、目的物が合成しやすい。減圧する場合、反応圧力は特に限定されないが、大気圧~0.01torr、が好ましく、0℃~100℃で溶媒が還流する程度の減圧度がより好ましい。
反応容器はガラスでもフッ素樹脂やポリエチレン製等の樹脂製でも問題ないが、式〔III〕で表されるフッ素化剤のpが1以上の場合、ガラス製であると収率低下するため、樹脂製が好ましく、フッ素樹脂製がより好ましい。
ジメチルアンモニウムカチオン、ジエチルアンモニウムカチオン、ジブチルアンモニウムカチオンなどの2級アンモニウムカチオン;
メチルアンモニウムカチオン、エチルアンモニウムカチオン、ブチルアンモニウムカチオン、ヘキシルアンモニウムカチオン、オクチルアンモニウムカチオンなどの1級アンモニウムカチオン;
1-プロピル-1-メチルピペリジニウムカチオン、1-(2-メトキシエチル)-1-メチルピペリジニウムカチオンなどのピペリジニウムカチオン;
1-プロピル-1-メチルピロリジニウムカチオン、1-ブチル-1-メチルピロリジニウムカチオン、1-ヘキシル-1-メチルピロリジニウムカチオン、1-オクチル-1-メチルピロリジニウムカチオンなどのピロリジニウムカチオン;
4-プロピル-4-メチルモルホリニウムカチオン、4-(2-メトキシエチル)-4-メチルモルホリニウムカチオンなどのモルホリニウムカチオン;
2-エチル-1,3,5-トリメチルピラゾリウムカチオン、2-プロピル-1,3,5-トリメチルピラゾリウムカチオン、2-ブチル-1,3,5-トリメチルピラゾリウムカチオン、2-ヘキシル-1,3,5-トリメチルピラゾリウムカチオンなどのピラゾリウムカチオン;
トリメチルスルホニウムカチオンなどのスルホニウムカチオン;
トリヘキシルテトラデシルホスホニウムカチオンなどのホスホニウムカチオン;
2-エチル-1,1,3,3-テトラメチルイソウロニウムカチオンなどのイソウロニウムカチオン;および
2-エチル-1,1,3,3-テトラメチルイソチオウロニウムカチオンなどのイソチオウロニウムカチオン;を挙げることができる。
ジ(フルオロスルホニル)イミド1-エチル-2,3-ジメチルイミダゾリウム塩、N-(フルオロスルホニル)-N-(トリフルオロメチルスルホニル)イミド1-エチル-2,3-ジメチルイミダゾリウム塩、N-(フルオロスルホニル)-N-(ペンタフルオロエチルスルホニル)イミド1-エチル-2,3-ジメチルイミダゾリウム塩、N-(フルオロスルホニル)-N-(ペルフルオロ-n-プロピルスルホニル)イミド1-エチル-2,3-ジメチルイミダゾリウム塩;
ジ(フルオロスルホニル)イミド1-オクチルピリジニウム塩、N-(フルオロスルホニル)-N-(トリフルオロメチルスルホニル)イミド1-オクチルピリジニウム塩、N-(フルオロスルホニル)-N-(ペンタフルオロエチルスルホニル)イミド1-オクチルピリジニウム塩、N-(フルオロスルホニル)-N-(ペルフルオロ-n-プロピルスルホニル)イミド1-オクチルピリジニウム塩; ジ(フルオロスルホニル)イミド1-エチル-3-メチルピリジニウム塩、N-(フルオロスルホニル)-N-(トリフルオロメチルスルホニル)イミド1-エチル-3-メチルピリジニウム塩、N-(フルオロスルホニル)-N-(ペンタフルオロエチルスルホニル)イミド1-エチル-3-メチルピリジニウム塩、N-(フルオロスルホニル)-N-(ペルフルオロ-n-プロピルスルホニル)イミド1-エチル-3-メチルピリジニウム塩;
(ジ(クロロスルホニル)イミドの合成)
攪拌器、温度計および還流管を取り付けた500mlの反応容器に、クロロスルホン酸(ClSO3H)123.9g(1.10mol)、クロロスルホニルイソシアネート98.1g(0.70mol)を仕込んだ。この混合液を撹拌下で2.5時間かけて130℃まで昇温し、同温度で9時間反応させた。反応終了後、減圧蒸留を行って98.5℃~101℃/4.2torrの留分を分取した。ジ(クロロスルホニル)イミドが無色透明な液状物として77.9g(0.36mol)得られた。
(ジ(フルオロスルホニル)イミドアンモニウム塩の合成)
フッ素樹脂製反応容器に、合成例1で得られたジ(クロロスルホニル)イミド1.07g(5.0mmol)を仕込んだ。これにアセトニトリル10mlおよびNH4F0.89g(24.0mmol)を添加し、80~84℃で4時間還流して反応させた。反応終了後、室温に冷却し、不溶物を濾過し、アセトニトリル10mlで洗浄した。次いで、溶媒を減圧下で留去した。得られた物質を19F-NMRで定量分析したところ、ジ(フルオロスルホニル)イミドアンモニウム塩0.95g(4.8mmol)を含有していることを確認した。
(ジ(フルオロスルホニル)イミドアンモニウム塩の合成)
フッ素樹脂製反応容器に、合成例1で得られたジ(クロロスルホニル)イミド1.07g(5.0mmol)を仕込んだ。これにアセトニトリル10mlおよびNH4F HF1.37g(24.0mmol)を添加し、80~84℃で4時間還流して反応させた。反応終了後、室温に冷却し、不溶物を濾過し、アセトニトリル10mlで洗浄した。次いで、溶媒を減圧下で留去した。得られた物質を19F-NMRで定量分析したところ、ジ(フルオロスルホニル)イミドアンモニウム塩0.94g(4.8mmol)を含有していることを確認した。
(ジ(フルオロスルホニル)イミドカリウム塩の合成)
反応容器に、ジ(フルオロスルホニル)イミドアンモニウム塩1.98g(10.0mmol)、酢酸ブチル10ml、および水酸化カリウム1.40g(25.0mmol)の20%水溶液を仕込み、65torr、37℃で1時間還流した。反応液を25℃に冷却した。その後、分液し、水相を酢酸ブチル10mlで3回抽出した。各抽出操作において得られた有機相を混ぜ合わせ、減圧下で溶媒を留去した。ジ(フルオロスルホニル)イミドカリウム塩1.93gが得られた。陽イオンクロマトで定量分析した結果、生成物のすべては、カリウム塩であり、アンモニウムイオンを含まないものであった。
(ジ(フルオロスルホニル)イミドリチウム塩の合成)
ジ(フルオロスルホニル)イミドアンモニウム塩3.8g(18.9mmol)に、酢酸ブチル38ml、水酸化リチウム・1水和物2.4g(56.7mmol)および水14.3mlを添加し、75torr、40℃で1時間加熱還流した。反応液を25℃に冷却した。その後、分液し、水相を酢酸ブチル19mlで3回抽出した。各抽出操作において得られた有機相を混ぜ合わせ、水1.5mlで洗浄した。その後、減圧下で溶媒を留去した。ジ(フルオロスルホニル)イミドリチウム塩3.4gが得られた。陽イオンクロマトで定量分析した結果、生成物のすべてがリチウム塩であり、アンモニウムイオンを含まないものであった。
(ジ(フルオロスルホニル)イミドナトリウム塩の合成)
ジ(フルオロスルホニル)イミドアンモニウム塩15.8g(79.8mmol)に、酢酸ブチル160ml、および水酸化ナトリウム40.0g(200.0mmol)の20%水溶液を添加し、65torr、37℃で1時間加熱還流した。反応液を25℃に冷却した。その後、分液し、水相を酢酸ブチル80mlで3回抽出した。各抽出操作において得られた有機相を混ぜ合わせ、減圧下で溶媒を留去した。これに塩化メチレン80mlを添加し、室温で15分間撹拌した。その後、結晶を濾別した。得られた結晶を塩化メチレン80mlで洗浄し、室温で減圧乾燥させた。ジ(フルオロスルホニル)イミドナトリウム塩13.4gが得られた。陽イオンクロマトで定量分析した結果、生成物のすべてがナトリウム塩であり、アンモニウムイオンを含まないものであった。
Claims (3)
- 前記少なくとも1種の化合物がアルカリ金属化合物、オニウム化合物および有機アミン化合物からなる群から選ばれる請求項2に記載のフルオロスルホニルイミド塩の製造方法。
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Also Published As
Publication number | Publication date |
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EP2660196A4 (en) | 2014-06-25 |
EP2660196B1 (en) | 2017-05-03 |
CA2826547A1 (en) | 2012-09-07 |
US9096502B2 (en) | 2015-08-04 |
CN103391896A (zh) | 2013-11-13 |
TWI461392B (zh) | 2014-11-21 |
ES2670053T3 (es) | 2018-05-29 |
EP3170789A1 (en) | 2017-05-24 |
JP5740466B2 (ja) | 2015-06-24 |
CA2826547C (en) | 2016-03-22 |
JPWO2012117961A1 (ja) | 2014-07-07 |
SG192219A1 (en) | 2013-09-30 |
JP2015157758A (ja) | 2015-09-03 |
US20130331609A1 (en) | 2013-12-12 |
KR20130114738A (ko) | 2013-10-17 |
KR101702656B1 (ko) | 2017-02-03 |
TW201240954A (en) | 2012-10-16 |
KR20150061024A (ko) | 2015-06-03 |
JP5886998B2 (ja) | 2016-03-16 |
ES2634678T3 (es) | 2017-09-28 |
EP2660196A1 (en) | 2013-11-06 |
EP3170789B1 (en) | 2018-04-18 |
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