CN104710475B - A kind of preparation method of quaternary salt - Google Patents

A kind of preparation method of quaternary salt Download PDF

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CN104710475B
CN104710475B CN201310684970.3A CN201310684970A CN104710475B CN 104710475 B CN104710475 B CN 104710475B CN 201310684970 A CN201310684970 A CN 201310684970A CN 104710475 B CN104710475 B CN 104710475B
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acid
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reaction
phosphine
quaternary
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CN104710475A (en
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郑卓群
申大卫
邱建
聂云华
张玉梅
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Microvast Power Systems Huzhou Co Ltd
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Microvast Power Systems Huzhou Co Ltd
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Abstract

The invention provides the preparation method of a kind of quaternary salt, including: (a) phosphorus-containing compound (R1R2R3P) the corresponding salt of generation is reacted with Bronsted acid;B () salt and dialkyl carbonate react and prepare quaternary salt.The method can synthesize quaternary salt with hydrogen phosphide or organic phosphoric compound for initial reactant, and the selection degree of freedom of reaction mass is bigger;The various quaternary salts of various structures can also be obtained, and product purity is high.

Description

A kind of preparation method of quaternary salt
Technical field
The present invention relates to the preparation method of a kind of quaternary salt.
Background technology
At present, one of application that quaternary salt is maximum is water treatment agent.Quaternary salt is considered as that a new generation's cationic is killed Microbial inoculum (prior-generation cationic antibacterial is quaternary ammonium salt), can be applicable to the circulations such as oil-field flooding, petrochemical industry, iron and steel, electric power In water system.Such as, tetramethyl chlorination is the first generation quaternary salt product being applied to Treatment of Industrial Water, has proved to be one Plant and there is inhibition, scale inhibition and the multipurpose agent killed livestock.Quaternary salt is also used as phase transfer catalyst, at catalytic field There is important application.Another potential important applied field is electro-chemical systems, and the quaternary salt of low melting point is of ionic liquid Important branch, the quaternary salt of low melting point is used as the electrochemical device such as lithium rechargeable battery, electric chemical super capacitor Electrolyte.
The traditional processing technology of quaternary salt is the method using tertiary phosphine and alkyl halide to carry out quaternary reaction, and its reaction is such as following formula institute Show:
R1R2R3P+R4X→[R1R2R3R4P]+X- (1)
Such as, tributyl methyl phosphonium iodide can be prepared by tributyl tertiary phosphine and iodomethane reaction:
(C4H9)3P+CH3I→[(C4H9)3PCH3]+I- (2)
Prepare at least to replace on P elements and have the quaternary salt of a methyl, it is also possible to make alkylating reagent by dimethyl sulfate, as Shown in following formula:
R1R2R3P+(CH3)2SO4→[R1R2R3PCH3]+CH3SO4 - (3)
Tertiary phosphine and dimethyl sulfate are easier to reaction, and yield is high, use the shortcoming of dimethyl sulfate to be its severe toxicity, have carcinogenesis.
The maximum weak point of above-mentioned process route is to prepare certain several quaternary salt, such as quaternary instead according to halogenated alkane The method answered, can only prepare anion is Cl-、Br-、I-Quaternary salt;According to the method for dimethyl sulfate quaternization reaction, Can only prepare anion is CH3SO4 -Quaternary salt.When being the quaternary salt of other ion if desired for preparation anion, Zhi Nengtong Cross ion-exchange reactions to realize, as shown in formula (4) and formula (5):
[R1R2R3R4P]+X-+H+A-→[R1R2R3R4P]+A-+H+X- (4)
[R1R2R3R4P]+X-+M+A-→[R1R2R3R4P]+A-+M+X- (5)
Such as, preparation anion is SO4 2-Quaternary salt [R1R2R3R4P]2 2+SO4 2-, general the most synthesizing chlorinated via formula (1) Quaternary salt, makes chloride quaternary and sulfuric acid reaction via formula (4) the most again, utilizes the volatile feature of hydrochloric acid to remove hydrogen chlorine Acid, makes reaction (4) balance move right, thus reaches ion exchange to greatest extent.And for example preparing anion is BF4 - Quaternary salt [R1R2R3R4P]+BF4 -, in like manner first synthesize corresponding quaternary halide via formula (1), then via formula (5) Make quaternary halide and metal inorganic salt such as NaBF4React in organic solvent is such as acetone, utilize metal halide organic molten The feature that in agent, dissolubility is little makes halogen ion separate out to realize the purpose of ion exchange with precipitation form.Obviously, formula (4) and formula (5) it is all balancing response, all there is the halfway phenomenon of reaction, inevitably residual halogens ion in final products. Utilize silver salt such as AgBF4, reaction (5) can carry out in aqueous, and can react complete, but high cost.
On the one hand, due to halide anion such as Cl-、Br-、I-Equistability is poor, the most oxidized and discharge toxic property, Corrosive halogen simple substance, its range of application is restricted;On the other hand, along with in-depth and the extension of research, it has been found that (F when anion is a certain in following ion-、NO3 -、CO3 2-、PF6 -、BF4 -、C2O4 2-、SO4 2-、PO4 3-、 Al2Cl7 -、CH3COO-、CF3SO3 -、C4H9SO3 -、CF3COO-、N(CF3SO2)2 -、N(C2F5SO2)2 -、N(C4F9SO2)2 -、N[(CF3SO2)(C4F9SO2)]-、C(CF3SO2)3 -Etc.), quaternary salt generally has not available for quaternary halide Some characteristic, such as fusing point are lower, conductivity is higher, viscosity is lower, hydrophobicity is strong etc., thus have and widely use On the way.To this end, the new preparation process developing these special quaternary salts is particularly important.
United States Patent (USP) US4892944 describes dimethyl carbonate as a kind of method preparing quaternary salt of alkylating reagent. The method is undertaken in two steps, and first step tertiary phosphine and dimethyl carbonate generate season methylcarbonate, second step season methyl Carbonate and acid reaction discharge methanol and carbon dioxide prepared quaternary salt, and the anion species of quaternary salt is by the acid used Determining, reaction equation is as follows:
R1R2R3P+Me2CO3→[R1R2R3PMe]+MeCO3 - (6)
[R1R2R3PMe]+MeCO3 -+H+A-→[R1R2R3PMe]+A-+MeOH+CO2 (7)
The feature of the method is, the anion of the quaternary salt prepared is the anion of various acid, is not limited by quaternizing agents, The anion range of choice is big.But, still being limited to reactant must be that tertiary phosphine, only tertiary phosphine could be by dimethyl carbonate alkyl Metaplasia becomes corresponding quaternary salt, hydrogen phosphide, primary phosphine and secondary phosphine can not by dimethyl carbonate alkylation, can not get Ji Yang from Son.
Summary of the invention
The invention provides the preparation method of a kind of quaternary salt, including: in the first step is reacted, by phosphorus-containing compound R1R2R3P The corresponding salt of generation is reacted with Bronsted acid;In second step reacts, the salt that first step reaction is generated and dialkyl carbonate Reaction prepares quaternary salt;Wherein, R1、R2、R3Separately selected from H, alkyl, thiazolinyl, alkynyl, phenyl, aryl, Or containing boron, silicon, nitrogen, phosphorus, oxygen, sulfur, fluorine, chlorine, bromine, iodine at least one of which element in above-mentioned organic group Group;R1、R2、R3Can be independent substituted radical, it is also possible to be that adjacent group combines cyclization.Due to the inventive method not Need to introduce halogenated hydrocarbons and make quaternizing agents, it is not necessary to be the season of appointment ion with prepared anion by anion exchange reaction Salt, therefore, the quaternary salt purity prepared by the inventive method is high, there is not the situation of other anion residual.
Method in the present invention, the first step, phosphorus-containing compound R1R2R3P is selected from hydrogen phosphide (PH3) and organic phosphoric compound in At least one, organic phosphoric compound be selected from primary phosphine (RPH2), secondary phosphine (R1R2And tertiary phosphine (R PH)1R2R3P) in extremely Few one;They are with Bronsted acid (H+A-) the reaction corresponding salt (PH of generation4Or organic salt (R A)1PH3A, R1R2PH2A, R1R2R3PHA);In second step reacts, salt (PH4Or organic salt (R A)1PH3A, R1R2PH2A, R1R2R3PHA) prepared quaternary salt (R is reacted with dialkyl carbonate1R2R3R4PA).To use dimethyl carbonate to make quaternary As a example by (alkylation) reagent, with hydrogen phosphide (PH3) it is initial reactant when preparing quaternary salt, chemical equation such as formula (8) With formula (9) Suo Shi:
With primary phosphine (R1PH2) it is initial reactant when preparing quaternary salt, chemical equation such as formula (10) and formula (11) institute Show:
R1PH2+H+A-→R1H3P+A- (10)
With secondary phosphine (R1R2PH) it is initial reactant when preparing quaternary salt, chemical equation such as formula (12) and formula (13) institute Show:
R1R2PH+H+A-→R1R2H2P+A- (12)
With tertiary phosphine (R1R2R3P) it is initial reactant when preparing quaternary salt, chemical equation such as formula (14) and formula (15) Shown in:
R1R2R3P+H+A-→R1R2R3HP+A- (14)
In the preparation method of above-mentioned quaternary salt, R in chemical equation1、R2、R3Be independently selected from hydrogen, alkyl, thiazolinyl, alkynyl, In phenyl, aryl or above-mentioned organic group containing boron, silicon, nitrogen, phosphorus, oxygen, sulfur, fluorine, chlorine, bromine, iodine the most extremely The group of few a kind of element;R1、R2、R3Can be independent substituted radical, it is also possible to be that adjacent group combines cyclization.Enter one Step, R1、R2、R3Separately selected from the alkyl that H, phenyl, aryl, carbon number are 1~20.
According to one embodiment of the present invention, organic phosphoric compound is selected from methylphosphine, dimethylphosphine, three methylphosphines, ethyl phosphine, diethyl Base phosphine, triethyl phosphine, tripropyl phosphine, di-t-butyl phosphine, tri-butyl phosphine, tributylphosphine, three n-pentyl phosphines, cyclohexyl Phosphine, dicyclohexylphosphontetrafluoroborate, tricyclohexyl phosphine, three hexyl phosphines, tri octyl phosphine, Phenylphosphine, diphenylphosphine, triphenylphosphine, two Aminomethyl phenyl phosphine, diethyl Phenylphosphine, diphenyl butylphosphine, tribenzyl phosphine, tris hydroxymethyl phosphine, 2-chloroethyl diethyl phosphine With at least one in three (pentafluoroethyl group) phosphine.
The quaternary cation structure of quaternary alkylphosphonium salt can be selected from following structure, but is not limited to following structure:
Bronsted acid in the inventive method refers to the most at least to provide a proton and hydrogen phosphide (PH3) or Organic phosphoric compound (includes primary phosphine R1PH2, secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) compound that the P element on combines, Mineral acid oxyacid such as arsenic acid (H can be selected from3AsO4), arsenious acid (H3AsO3), pyroarsenic acid (H4As2O7), boron Acid (H3BO3), 12 tungsten boric acid (H5BW12O40), phosphoric acid (H3PO4), phosphorous acid (H3PO3), hypophosphorous acid (H3PO2), hypophosphoric acid (H4P2O6), pyrophosphoric acid (H4P2O7), sulphuric acid (H2SO4), sulfurous acid (H2SO3)、 Chlorosulfonic acid (HSO3Cl), fluosulfonic acid (HSO3F), metasilicic acid (H2SiO3Or SiO2·H2O), orthosilicic acid (H4SiO4) At least one in Deng;Bronsted acid is also selected from inorganic oxygen-free acid such as carborane acid (H [CHB11Cl11]), hydrosulphuric acid (H2S), fluoboric acid (HBF4), hexafluosilicic acid (H2SiF6), hexafluorophosphoric acid (HPF6), Fluohydric acid. (HF), At least one in hydrochloric acid (HCl), hydrobromic acid (HBr) and hydroiodic acid (HI);With organic acid such as oxalic acid, formic acid, Acetic acid, propanoic acid, succinic acid, trifluoracetic acid, trifluoromethanesulfonic acid, methanesulfonic acid, mandelic acid, methylsulfuric acid, ethyl sulfuric acid, Oleic acid, stearic acid, acrylic acid, maleic acid, citric acid, double (catechol) boric acid, double oxalic acid boric acid, dimalonic acid Boric acid, three (pentafluoroethyl group) three fluorophosphoric acid, triethyl group three fluorophosphoric acid, four cyano boric acid, tartaric acid, malic acid, citron At least one in acid, ascorbic acid, benzoic acid, benzenesulfonic acid, p-methyl benzenesulfonic acid, salicylic acid and caffeic acid etc..
The preparation method of the quaternary salt according to the present invention, above-mentioned Bronsted acid also includes that scope far surpasses the acid compounds of common meaning, We are defined as non-acids proton compound them, this compounds active proton hydrogen, and owing to neighboring group has The strongest electron-withdrawing and make hydrogen atom have greater activity, the most above-mentioned non-acids proton compound can discharge activity matter Son, and and phosphorus-containing compound R1R2R3P reaction generates salt.Such as imide analog compounds, above-mentioned imide compound has Just like the structure shown in formula 1 or formula 2:
Formula 1:HN (CmF2m+1SO2)(CnF2n+1SO2);
Formula 2:HNCxF2x(SO2)2
Wherein m is the integer of 0~5, and n is the integer of 0~5, and X is the integer of 1~10.
According to one embodiment of the present invention, above-mentioned imide compound is selected from
In at least one.
According to another embodiment of the invention, non-acids proton compound is also selected from three (trimethyl fluoride sulfonyl) first At least one in alkane, phenol, p-methyl phenol, betanaphthol, 2,4 dichloro phenol and para-aminophenol etc..
The kind of acid is influential for the yield of final reacting product.According to one embodiment of the present invention, acid strong The productivity that is favorably provided with of acid and the yield of product, such as halogen acids in hydrochloric acid (HCl), hydrobromic acid (HBr), hydrogen Iodic acid (HI) is all strong acid, and the yield of product is the highest.It addition, same type of acid often has close reaction to produce Thing yield, inorganic complex acid such as fluoboric acid (HBF4), hexafluosilicic acid (H2SiF6), hexafluorophosphoric acid (HPF6) there is close product Rate and product yield.In some cases, halogen acids is typically higher than the product rate of inorganic complex acid and yield.
Quaternary (alkylation) reagent dialkyl carbonate RO-CO-OR ' in the inventive method, it is considered to substituent R, R ' To electronics/factor such as sucting electronic effect, space steric effect to the thermodynamics of quaternary reaction, kinetic effect, preferably tie The relatively simple dimethyl carbonate of structure, Ethyl methyl carbonate, diethyl carbonate, ethylene carbonate, Allyl carbonate, phenyl carbons At least one in acid methyl ester, diphenyl carbonate and dimethyl benzyl, particularly preferred dimethyl carbonate, Ethyl methyl carbonate and carbon Diethyl phthalate.Particularly point out, when carbonic ester is circulus, utilize the method in the present invention can obtain multifunctional dough Compound.Such as in second step reacts, add ethylene carbonate or Allyl carbonate makees quaternizing agents, can be at end product Quaternary salt introduces ethoxy (-CH respectively2CH2And 2-hydroxypropyl (-CH OH)2CHOHCH3).Due to drawing of hydroxyl Entering, the application on the one hand expanding quaternary salt (such as strengthens hydrophilic or water solublity, can apply to water-related neck Territory);On the other hand, provide condition for " grafting " other functional group, on the basis of hydroxyl can sense dough further, Such as halogenation, be etherified, esterification etc., it is also possible to by being oxidized to carboxylic acid.
The preparation method of the quaternary salt according to the present invention, the first step is reacted, the most i.e. can be reacted.Phosphorous Compound such as hydrogen phosphide (PH3) or organic phosphoric compound (include primary phosphine R1PH2, secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) Corresponding salt (the PH of generation is reacted with Bronsted acid4Or organic salt (R A)1PH3A, R1R2PH2A, R1R2R3PHA), The mol ratio of reactant is depending on the proton number that Bronsted acid can provide.If a part Bronsted acid may only provide a proton, So, hydrogen phosphide (PH3) or organic phosphoric compound (include primary phosphine R1PH2, secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) with The mol ratio of Bronsted acid is preferably 1:1.Boiling point reaction relatively low, lower-cost can be considered to ensure reaction to carry out completely Thing is the most excessive.Can remove by the way of distillation of washing, distill or reduce pressure after reaction completely.Such as, hydrogen phosphide (PH3) Prepared PH is reacted with mol ratio 1:1 with Fluohydric acid. (HF)4F, hydrogen phosphide and Fluohydric acid. are all effumability compounds, permissible Which kind of consider to select more favourable (the economic one-tenth of material somewhat excess according to combined factors such as Material Cost height, waste recovery difficulty or ease This low and environmental friendliness);If a part Bronsted acid can provide two or the proton of more than two, then hydrogen phosphide (PH3) Or organic phosphoric compound (includes primary phosphine R1PH2, secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) mol ratio with Bronsted acid can be 1:1,2:1 or 3:1, such as, a part phosphoric acid at most can provide 3 protons, and triethyl phosphine can be pressed respectively with phosphoric acid Mol ratio 1:1,2:1 or 3:1 react, and prepare triethyl group dihydric phosphate ([(C respectively2H5)3PH][H2PO4]), three Ethyl phosphonic acid hydrogen salt ([(C2H5)3PH]2[HPO4]) or triethyl ([(C2H5)3PH]3[PO4]).In order to Ensure reaction to carry out completely and can consider that boiling point reactant relatively low, lower-cost is the most excessive, can pass through after reaction completely The mode distilled of washing, distill or reduce pressure removes.
According to raw material sources, hydrogen phosphide (PH3) or organic phosphoric compound (include primary phosphine R1PH2, secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) being usually pure substance, Bronsted acid can be that pure substance can also be dissolved in solvent formation solution, such as, common Mineral acid be usually aqueous solution, sulphuric acid, nitric acid, hydrochloric acid, hydrobromic acid, Fluohydric acid., phosphoric acid, hexafluorophosphoric acid, tetrafluoro boron Acid etc..If Bronsted acid is dissolved in the solution of solvent, first step reaction can be carried out in solution is such as aqueous solution, can be with volume Outer interpolation solvent can also be without.If Bronsted acid is pure substance, organic acid is pure substance mostly, such as acetic acid, propanoic acid, Benzoic acid etc., preferably interpolation solvent are beneficial to reaction and carry out completely.Molten to used in step chemical reaction each in the inventive method Agent system does not make specific requirement, alcohols (preferably methanol), ethers, ketone, dialkyl carbonate esters (preferably dimethyl carbonate), Nitrile, dichloro-methane, chloroform, oxolane, toluene etc. common are machine solvent and their mixed solvent all Can consider to use.If Bronsted acid is not traditional acid, it is owing to neighboring group has the strongest electron-withdrawing And make hydrogen atom have greater activity, and such as three (trimethyl fluoride sulfonyl) methane, two (trimethyl fluoride sulfonyl) imines etc., Single step reaction should select suitable solvent to avoid introducing side reaction.
Usually, in the present invention first step reaction be easier to carry out, generally-20 DEG C~80 DEG C relatively be beneficial to reaction, preferably 0~ 60 DEG C, if exothermic heat of reaction is obvious, preferably slow down another kind of reactant addition, or lowers the temperature.Reaction pressure is usual Being 0.05~2MPa absolute pressure, preferably 0.09~0.5MPa absolute pressure, particularly preferred 0.095~0.12MPa is absolute Pressure.This reaction required time is usually a few minutes to a few hours, preferably 0.1~12 hour, particularly preferred 0.5~8 hour. After reaction completely, can by the modes such as distillation, decompression distillation, recrystallization, washing remove unreacted reactant and Solvent;On the premise of not affecting second step reaction (introducing side reaction), it is also possible to be left intact and then carry out second Step reaction.
According to the preparation method in the present invention, in second step reacts, the first step reaction salt (PH prepared4Or have A) Machine salt (R1PH3A, R1R2PH2A, R1R2R3PHA) prepared quaternary salt (R is reacted with dialkyl carbonate4PA).? Salt (PH4Or organic salt (R A)1PH3A, R1R2PH2A, R1R2R3PHA) mol ratio with dialkyl carbonate regards hydrogen Depending on the number of proton, such as salt PH4A is 1:4 with the mol ratio of dialkyl carbonate, organic salt RPH3A、R2PH2A、 R3PHA is respectively 1:3,1:2,1:1 with the mol ratio of dialkyl carbonate.Certainly, carry out completely in order to ensure reaction, typically Ground, selects dialkyl carbonate the most excessive;Dialkyl carbonate can also be selected the most excessive, and the dialkyl carbonate of excess is permissible Serve as solvent.This reaction is generally carried out at a temperature of 60~280 DEG C, preferably 100~200 DEG C, reaction pressure be usually 0.1~ 3MPa absolute pressure, preferably 0.8~2.0MPa absolute pressure.Before reaction starts, the most first use inert atmosphere displacement reaction Air in container or take the air in reaction vessel away to avoid because reaction is adversely affected by air with vacuum pump.Should Reaction required time is usually a few hours, preferably 0.5~24 hour, particularly preferred 2~15 hours.After reaction completely, Unnecessary reactant and solvent can be removed, in order to ensure end product quaternary salt by the way of distillation or decompression distillation Purity, can pass through the Methods For Purification product such as recrystallization, extraction.From reaction equation, wherein the one of second step reaction Planting by-product is CO2.Along with constantly carrying out of reaction, CO2Amount be continuously increased, in causing reaction vessel, pressure is continuous Rise.Consider safety in production and reduce equipment manufacturing cost (pressure vessel by bear pressure graduation, pressure is the highest, consumption Material is the most, the highest to bubble-tight requirement), a certain reactant (control reaction rate) limit can be slowly added into limit and pass through Air valve release CO2So that the pressure stability in reaction vessel is in certain level.And use limit conveying material limit release CO2 Method be also beneficial to improve the production capacity of reactor in actual production.Such as according to practical experience, if discharging CO not in time2, The pressure reaction still of general 10L produces the quaternary salt of about 1kg, and under the reaction condition of 160 DEG C, pressure in still is it is possible to reach To 1.6MPa;If using conveying reaction raw materials (carbonic ester) limit, limit to discharge CO in right amount2Method, make reactor intrinsic pressure Power is in an equilibrium valve, such as, be still 1.6MPa, then the pressure reaction still of 10L can produce 5kg even more season Salt.Test result indicate that, adopt yield and the purity not interfering with final products in this way.
As consersion unit used by the inventive method, however, it would be possible to use all be applicable to liquid reactive container and pressure Container, especially first step reaction can also be carried out in the consersion unit of mixes liquid raw material such as stirring container.The material of container Matter need to select according to the physico-chemical property of reactant, preferably with having the material of characteristic acidproof, alkaline-resisting, and such as first step reaction Can carry out in enamel reaction vessel, second step reaction can at rustless steel (such as 316L rustless steel) pressure vessel or Person's titanium material pressure vessel is carried out.
The inventive method can in batches, semicontinuous or be carried out continuously.When being conducted batch-wise, after first step reaction terminates, logical Cross distillation, the decompression mode such as distillation, recrystallization, washing removes unreacted reactant and solvent to obtain purity higher Salt (PH4Or organic salt (R A)1PH3A, R1R2PH2A, R1R2R3PHA), react with dialkyl carbonate the most again Obtain quaternary salt.Especially when carrying protogenic reactant and being aqueous solution, preferably it is conducted batch-wise, to avoid water to second step The impact of reaction.When being carried out continuously, after first step reaction terminates, any process can not be made, add dialkyl carbonate with And suitable solvent continues second step reaction in right amount.
The invention provides a kind of method preparing quaternary salt, all can only be with tertiary phosphine for initial reactant system according to conventional method Standby quaternary salt, is with hydrogen phosphide (PH in one embodiment of the present invention3) or organic phosphoric compound (include primary phosphine R1PH2、 Secondary phosphine R1R2PH, tertiary phosphine R1R2R3P) synthesizing quaternary salt with initial reactant, the selection degree of freedom of reaction mass is bigger.Example As, prepare tetramethyl tetrafluoroborate, according to the inventive method, hydrogen phosphide (PH3), methylphosphine, dimethylphosphine, front three Phosphine can be employed as initial reactant.Furthermore, it is possible to by using different Bronsted acids, " freely " selects the moon of quaternary salt Ionic species.By hydrogen phosphide (PH3) or organic phosphoric compound react with Bronsted acid, by this way introduce required for the moon Ion is in final products quaternary salt, it is possible to obtain the various quaternary salts of various structures, and product purity is high, does not exist many Plant anion the problem depositing (former anion residual).Additionally, the inventive method low cost.By hydrogen phosphide or phosphine and acid Neutralize reaction introduce quaternary salt anion, and under normal circumstances acid price be intended to well below corresponding slaine chemical combination Thing, therefore greatly reduces Material Cost.
Additionally, low melting point quaternary salt prepared according to the methods of the invention, belong to the category of ionic liquid.Due in preparation process In can not introduce halide ion, be particularly well-suited to the electro-chemical systems sensitive to halide ion, such as lithium ion Secondary cell, electric chemical super capacitor etc..
Present invention also offers a kind of electrolyte for secondary cell, including the quaternary salt prepared according to above-mentioned preparation method.
The present invention still further provides a kind of secondary cell, including electrolyte as above.
Detailed description of the invention
The present invention is described in detail by following specific embodiment, but the present invention is not restricted to following example. Embodiment 1
Hydrochloric acid (260.0g, 36%, 2.60mol) is placed in (N in reaction vessel2Protection), it is cooled with an ice bath to 10 DEG C, It is slowly added into triethyl phosphine (300.0g, 2.54mol) while stirring, adds when reactant mixture viscosity is difficult to more greatly stirring Enter appropriate methanol, react about 0.5 hour;Being heated to 60 DEG C, decompression is distilled off overwhelming majority water and methanol, obtains chlorine Change triethyl group salt;Chlorination triethyl group salt is transferred in pressure reacting container, with vacuum pump, container inner pressure is down to 1 Below kPa, is warming up to 140 DEG C, then controls the addition speed of methanol and dimethyl carbonate with effusion meter, maintains reaction vessel Interior pressure is 1.3~1.5MPa, and when hypertonia, (air valve front end assembling condensing tube is to prevent solvent and reaction to open air valve Thing is discharged) release gas (CO2);A total of about addition 100g methanol and 500g dimethyl carbonate, the complete continuation that feeds exists Reacting 2 hours under the conditions of 150 DEG C and 1.6~1.8MPa, the response time amounts to 8 hours;After reaction terminates, subtract at 80 DEG C Pressure is distilled off major part low boilers, obtains crude product methyl chloride triethyl group quaternary salt, then at 45 DEG C and 0.1kPa Decompression is lower to be dried 8 hours, obtains methyl chloride triethyl group salt (419.0g, 2.49mol), productivity about 98%.
Embodiment 2
Use N2Displacement tainer air, is placed in tributylphosphine (300.0g, 1.49mol) together with 1000mL methanol In reaction vessel, be cooled with an ice bath to 10 DEG C, be slowly added into while stirring double (trimethyl fluoride sulfonyl) imines (427.6g, 1.49mol), it is subsequently adding dimethyl carbonate (202.0g, 2.24mol), is warming up to 180 DEG C, 1.6~1.7MPa React 6 hours under pressure;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then at 60 DEG C and 0.1 KPa decompression is lower to be dried 4 hours, obtain double (trimethyl fluoride sulfonyl) formimino group tributyl quaternary salt of product (705.7g, 1.42mol), productivity about 95%.
Embodiment 3
Use N2Displacement tainer air, is placed in triphenylphosphine (300.0g, 1.14mol) instead together with 500mL methanol Answer in container, be cooled with an ice bath to 10 DEG C, be slowly added into while stirring double (trimethyl fluoride sulfonyl) imines (321.8g, 1.14 Mol), it is subsequently adding dimethyl carbonate (202.0g, 2.24mol), is warming up to 160 DEG C, at 1.4~1.5MPa pressure Lower reaction 4 hours;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then at 60 DEG C and 0.1kPa Decompression is lower to be dried 4 hours, obtains double (trimethyl fluoride sulfonyl) formimino group triphenyl quaternary salt (584.8g, 1.05mol) of product, Productivity about 92%.
Embodiment 4
Use N2Displacement tainer air, is placed in reaction by triphenylphosphine (300.0g, 1.14mol) together with 500mL methanol In container, under room temperature, it is slowly added into fluoborate solution (250.8g, 40%, 1.14mol) while stirring, reacts 1 hour. It is warming up to 50 DEG C, removes major part first alcohol and water under reduced pressure, be subsequently adding dimethyl carbonate (202.0g, 2.24mol), rise Temperature, to 160 DEG C, is reacted 6 hours under 1.4~1.5MPa pressure;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing Low boilers, is dried 4 hours under then reducing pressure at 60 DEG C and 0.1kPa, obtains product fluoboric acid methyl triphenyl quaternary salt (375.0g, 1.03mol), productivity about 90%.
Embodiment 5
Use N2Displacement tainer air, is placed in diphenylphosphine (400.0g, 2.15mol) instead together with 400mL methanol Answer in container, be cooled with an ice bath to 10 DEG C, be slowly added into while stirring double (trimethyl fluoride sulfonyl) imines (604.3g, 2.15 Mol), reacting 1 hour, be then heated to 60 DEG C, decompression is distilled off overwhelming majority methanol, obtains double (trifluoromethyl Sulphonyl) inferior amine salt;Double (trimethyl fluoride sulfonyl) inferior amine salts are transferred in pressure reacting container, will hold with vacuum pump In device, pressure is down to below 1kPa, is warming up to 140 DEG C, then controls the addition speed of methanol and dimethyl carbonate with effusion meter, Maintain in reaction vessel that pressure is 1.2~1.4MPa, when hypertonia, open air valve (air valve front end assembling condensing tube in case Only solvent is discharged with reactant) release gas (CO2);A total of about addition 300g methanol and 500g dimethyl carbonate, add 4 hours material time, the complete continuation that feeds reacts 4 hours under the conditions of 150 DEG C and about 1.6MPa, and the response time amounts to 8 Hour;After reaction terminates, at 80 DEG C, decompression is distilled off major part low boilers, obtains double (the trifluoromethyl sulphur of crude product Acyl) imines dimethyl diphenyl quaternary salt, it is dried 4 hours under then reducing pressure at 60 DEG C and 0.1kPa, obtains product double (three Methyl fluoride sulphonyl) imines dimethyl diphenyl quaternary salt (1009.8g, 2.04mol), productivity about 95%.
Embodiment 6
Use N2Displacement tainer air, is placed in diethyl Phenylphosphine (200g, 1.2mol) instead together with 400mL methanol Answer in container, be cooled with an ice bath to 15 DEG C, be slowly added into while stirring double (trimethyl fluoride sulfonyl) imines (338.6g, 1.2 Mol), react 10 hours, be subsequently adding dimethyl carbonate (202g, 2.24mol), be warming up to 180 DEG C, 1.4~1.7 React 6 hours under MPa pressure;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then at 60 DEG C Lower with 0.1kPa decompression dry 4 hours, obtain double (trimethyl fluoride sulfonyl) formimino group diethyl phenyl quaternary salt of product (533.1g, 1.12mol), productivity about 93%.
Embodiment 7
Use N2Displacement tainer air, is placed in reaction by diphenylphosphine (200g, 1.08mol) together with 400mL methanol In container, it is cooled with an ice bath to 10 DEG C, is slowly added into acetic acid (71.34g, 1.19mol) while stirring, react 5 hours, It is subsequently adding dimethyl carbonate (202g, 2.24mol), is warming up to 170 DEG C, under 1.4~1.7MPa pressure, react 6 little Time;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then dry under 60 DEG C and 0.1kPa decompressions 4 hours, obtain acetic acid product dimethyl diphenyl quaternary salt (279.8g, 1.02mol), productivity about 94%.
Embodiment 8
Use N2Displacement tainer air, is placed in triphenylphosphine (300.0g, 1.14mol) instead together with 500mL methanol Answer in container, be cooled with an ice bath to 10 DEG C, be slowly added into while stirring double (trimethyl fluoride sulfonyl) imines (320.3g, 1.14 Mol), it is subsequently adding diethyl carbonate (264.3g, 2.24mol), is warming up to 180 DEG C, at 1.4~1.5MPa pressure Lower reaction 4 hours;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then at 60 DEG C and 0.1kPa Decompression is lower to be dried 4 hours, obtains double (trimethyl fluoride sulfonyl) iminoethyl triphenyl quaternary salt (599.5g, 1.05mol) of product, Productivity about 92%.
Embodiment 9
In draughty ventilating kitchen, hydrochloric acid (520g, 36%, 5.20mol) is placed in (N in reaction vessel2Protection), It is cooled with an ice bath to 0 DEG C, the most slowly hydrogen phosphide is slowly introducing in hydrochloric acid, before the intake of hydrogen phosphide is according to gas tank After of poor quality be calculated (180.2g, 5.30mol), react about 4 hours;Being heated to 45 DEG C, decompression is distilled off Major part water, obtains chlorate;Chlorate is transferred in pressure reacting container, with vacuum pump, container inner pressure is dropped To below 1kPa, add 500g methanol, be warming up to 180 DEG C, then control the addition speed of dimethyl carbonate with effusion meter Degree, in maintaining reaction vessel, pressure is 1.6~1.7MPa, when hypertonia, opens air valve (air valve front end assembling condensing tube To prevent solvent from discharging with reactant) release gas (CO2), amount to and add dimethyl carbonate (2052g, 22.8mol), The complete continuation that feeds is reacted 2 hours under the conditions of 160 DEG C and 1.6~1.7MPa, and the response time amounts to 12 hours;Reaction knot Shu Hou, at 80 DEG C, decompression is distilled off major part low boilers, obtains crude product tetramethyl phosphonium chloride quaternary salt, then at 45 DEG C Lower with 0.1kPa decompression dry 6 hours, obtain tetramethyl phosphonium chloride quaternary salt (619.8g, 4.9mol), productivity about 94%.
Embodiment 10
Use N2Displacement tainer air, is placed in triphenylphosphine (300.0g, 1.14mol) instead together with 500mL methanol Answer in container, be heated to 60 DEG C, be slowly added into double (trimethyl fluoride sulfonyl) imines (321.8g, 1.14mol) while stirring, It is subsequently adding ethylene carbonate (176.0g, 2.0mol), is warming up to 160 DEG C, under 1.4~1.5MPa pressure, react 4 Hour;Reaction is reduced pressure at 80 DEG C after terminating and is distilled decompression removing low boilers, then does under 60 DEG C and 0.1kPa decompressions Dry 4 hours, obtain double (trimethyl fluoride sulfonyl) imines 2-hydroxyethyl triphenyl quaternary salt (616.3g, 1.05mol) of product, Productivity about 92%.

Claims (27)

1. a preparation method for quaternary salt, including: the first step is reacted, by phosphorus-containing compound R1R2R3P reacts with Bronsted acid Generate corresponding salt;Second step reacts, the salt and the dialkyl carbonate that generate during the first step is reacted, ethylene carbonate, At least one reaction in Allyl carbonate, phenyl-carbonic acid methyl ester, diphenyl carbonate and dimethyl benzyl prepares quaternary salt; Wherein, R1、R2、R3Separately selected from H, alkyl, thiazolinyl, alkynyl, aryl or above-mentioned organic group In containing boron, silicon, nitrogen, phosphorus, oxygen, sulfur, fluorine, chlorine, bromine, the group of iodine at least one of which element;R1、R2、 R3Can be independent substituted radical, it is also possible to be that adjacent group combines cyclization;
Described Bronsted acid is selected from mineral acid, or organic acid, or non-acids proton compound, and described non-acids proton compound is permissible Discharge active proton, and and phosphorus-containing compound reaction generation salt;
Described mineral acid is selected from carborane acid (H [CHB11Cl11]), hydrosulphuric acid (H2S), fluoboric acid (HBF4), fluorine silicon Acid (H2SiF6), hexafluorophosphoric acid (HPF6), Fluohydric acid. (HF), hydrochloric acid (HCl), hydrobromic acid (HBr), Hydroiodic acid (HI), arsenic acid (H3AsO4), arsenious acid (H3AsO3), pyroarsenic acid (H4As2O7), boric acid (H3BO3)、 12 tungsten boric acid (H5BW12O40), phosphoric acid (H3PO4), phosphorous acid (H3PO3), hypophosphorous acid (H3PO2)、 Hypophosphoric acid (H4P2O6), pyrophosphoric acid (H4P2O7), sulphuric acid (H2SO4), sulfurous acid (H2SO3), chlorine sulphur Acid (HSO3Cl), fluosulfonic acid (HSO3F), metasilicic acid (H2SiO3Or SiO2·H2And orthosilicic acid (H O)4SiO4)、 In at least one;
Described organic acid selected from oxalic acid, formic acid, acetic acid, propanoic acid, succinic acid, trifluoracetic acid, trifluoromethanesulfonic acid, methanesulfonic acid, Mandelic acid, methylsulfuric acid, ethyl sulfuric acid, oleic acid, stearic acid, acrylic acid, maleic acid, citric acid, double (adjacent benzene two Phenol) boric acid, double oxalic acid boric acid, dimalonic acid boric acid, three (pentafluoroethyl group) three fluorophosphoric acid, triethyl group three fluorophosphoric acid, Four cyano boric acid, tartaric acid, malic acid, citric acid, ascorbic acid, benzoic acid, benzenesulfonic acid, p-methyl benzenesulfonic acid, water At least one in poplar acid and caffeic acid.
The preparation method of quaternary salt the most according to claim 1, it is characterised in that described phosphorus-containing compound R1R2R3P selects At least one in hydrogen phosphide and organic phosphoric compound.
The preparation method of quaternary salt the most according to claim 2, it is characterised in that described organic phosphoric compound selected from primary phosphine, At least one in secondary phosphine and tertiary phosphine.
The preparation method of quaternary salt the most according to claim 3, it is characterised in that described R1、R2、R3Separately Selected from the alkyl that H, aryl, carbon number are 1~20.
The preparation method of quaternary salt the most according to claim 2, it is characterised in that described organic phosphoric compound selected from methylphosphine, Dimethylphosphine, three methylphosphines, ethyl phosphine, diethyl phosphine, triethyl phosphine, tripropyl phosphine, di-t-butyl phosphine, tri-butyl phosphine, Tributylphosphine, three n-pentyl phosphines, cyclohexyl phosphine, dicyclohexylphosphontetrafluoroborate, tricyclohexyl phosphine, three hexyl phosphines, tri octyl phosphine, Phenylphosphine, diphenylphosphine, triphenylphosphine, dimethylphenylphosphine, diethyl Phenylphosphine, diphenyl butylphosphine, tribenzyl At least one in phosphine, tris hydroxymethyl phosphine, 2-chloroethyl diethyl phosphine and three (pentafluoroethyl group) phosphine.
The preparation method of quaternary salt the most according to claim 1, it is characterised in that described non-acids proton compound is selected from There is the imide analog compounds of structure as shown in formula 1 or formula 2:
Formula 1:HN (CmF2m+1SO2)(CnF2n+1SO2);
Formula 2:HNCxF2x(SO2)2
Wherein m is the integer of 0~5, and n is the integer of 0~5, and X is the integer of 1~10.
The preparation method of quaternary salt the most according to claim 6, it is characterised in that described imide analog compounds is selected from In at least one.
The preparation method of quaternary salt the most according to claim 1, it is characterised in that described non-acids proton compound is selected from In three (trimethyl fluoride sulfonyl) methane, phenol, p-methyl phenol, betanaphthol, 2,4 dichloro phenol and para-aminophenol At least one.
The preparation method of quaternary salt the most according to claim 1, it is characterised in that described dialkyl carbonate is selected from carbonic acid two At least one in methyl ester, Ethyl methyl carbonate and diethyl carbonate.
The preparation method of quaternary salt the most according to claim 1, it is characterised in that the reaction of the described first step is in a solvent Carry out.
The preparation method of 11. quaternary salts according to claim 10, it is characterised in that described solvent selected from water, alkane, At least one in cycloalkane, alkyl halide, aromatic hydrocarbons, alcohol, ether, ketone, ester, nitrile and amide.
The preparation method of 12. quaternary salts according to claim 1, it is characterised in that the reaction temperature of first step reaction is -20 DEG C~80 DEG C.
The preparation method of 13. quaternary salts according to claim 12, it is characterised in that the reaction temperature of first step reaction is 0 DEG C~60 DEG C.
The preparation method of 14. quaternary salts according to claim 1, it is characterised in that the reaction pressure of first step reaction is 0.05~2MPa.
The preparation method of 15. quaternary salts according to claim 14, it is characterised in that the reaction pressure of first step reaction is 0.09~0.5MPa.
The preparation method of 16. quaternary salts according to claim 1, it is characterised in that the first step reaction response time be 0.1~12 hour.
The preparation method of 17. quaternary salts according to claim 16, it is characterised in that the first step reaction response time be 0.5~8 hour.
The preparation method of 18. quaternary salts according to claim 1, it is characterised in that after the first step has been reacted, by washing The mode washed and distill removes unreacted reactant and solvent.
The preparation method of 19. quaternary salts according to claim 1, it is characterised in that the reaction temperature of second step reaction is 60~280 DEG C.
The preparation method of 20. quaternary salts according to claim 19, it is characterised in that the reaction temperature of second step reaction is 100~200 DEG C.
The preparation method of 21. quaternary salts according to claim 1, it is characterised in that the reaction pressure of second step reaction is 0.1~3MPa.
The preparation method of 22. quaternary salts according to claim 21, it is characterised in that the reaction pressure of second step reaction is 0.8~2MPa.
The preparation method of 23. quaternary salts according to claim 1, it is characterised in that second step reaction response time be 0.5~24 hour.
The preparation method of 24. quaternary salts according to claim 23, it is characterised in that second step reaction response time be 2~15 hours.
The preparation method of 25. quaternary salts according to claim 1, it is characterised in that before second step reaction starts, reaction is held Device noble gas is replaced or is evacuated.
The preparation method of 26. quaternary salts according to claim 1, it is characterised in that after second step has reacted, by steaming The mode evaporated removes remaining reactant and solvent.
The preparation method of 27. quaternary salts according to claim 1, it is characterised in that after second step has reacted, by weight Crystallization or the Methods For Purification product of extraction.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725926A (en) * 1986-01-17 1988-02-16 Asahi Glass Company Ltd. Electric double layer capacitor having high capacity
US4892944A (en) * 1987-05-13 1990-01-09 Mitsubishi Petrochemical Co., Ltd. Process for producing quaternary salts
CN1503778A (en) * 2001-03-26 2004-06-09 �����֯��ʽ���� Ionic liquid electrolyte salt for storage device electrolytic solution for storage device electric double layer capacitor and secondary battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4725926A (en) * 1986-01-17 1988-02-16 Asahi Glass Company Ltd. Electric double layer capacitor having high capacity
US4892944A (en) * 1987-05-13 1990-01-09 Mitsubishi Petrochemical Co., Ltd. Process for producing quaternary salts
CN1503778A (en) * 2001-03-26 2004-06-09 �����֯��ʽ���� Ionic liquid electrolyte salt for storage device electrolytic solution for storage device electric double layer capacitor and secondary battery

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