CN100427477C - Process of synthesizing cyclic carbonate by epoxy compound with carbon dioxide reaction - Google Patents
Process of synthesizing cyclic carbonate by epoxy compound with carbon dioxide reaction Download PDFInfo
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Abstract
This invention involves epoxy compounds and method of through synthetic reaction with carbon dioxide to produce cyclic carbonate, belong to fine chemical products catalytic synthesis technology. Feature is the catalyst system for the reaction is heterogeneous catalytic reaction system which takes amide RCONR'R 'as catalyst, water as promoter, steps: 1. First Amide into the reactor, then adds water and epoxy compounds, and then seal; 2. To bioreactor swap into carbon dioxide gas, stirring, heat reaction; 3. reaction 1-20 hours, and stop heating, stirring and cooling to room temperature, deflating. the invention uses cheaper small organic molecules amide RCONR'R ' and water as catalyst system, greatly reducing the cost of catalyst, to overcome the existing system is not high catalytic activity drawbacks, the reaction efficiently completed; the using catalyst is stable small organic molecules, easily recovered and reused, is environmental friendly catalyst system.
Description
One, technical field
The present invention relates to do the addition reaction method for cyclic carbonates of catalyst epoxy compounds and carbonic acid gas, belong to fine chemical product catalytic synthetic techniques field with acid amides and water.
Two, background technology
Cyclic carbonate is the high polar organic solvent of the high boiling point of excellent property, is widely used in fields such as organic synthesis, makeup, gas delivery, battery dielectric substance and metal extractions.For example, many in recent years urea production producer adopts propylene carbonate to make decarbonization solvent one after another, and its demand is greatly increased.
The synthetic method of propylene carbonate mainly contains phosgenation, ester-interchange method and epoxy compounds and carbonic acid gas additive process etc.Wherein, be raw material with epoxy compounds and carbonic acid gas, synthesizing annular carbonate is a low pollution, eco-friendly synthetic route in the presence of catalyzer, its research and development are subjected to generally paying attention to.Since the people such as Inoue of Japan in 1969 adopt zinc ethyl and water catalysis epoxidation compound and carbonic acid gas synthesizing annular carbonate first, successively there have been metallic compounds such as non-metallic catalyst such as human ammonium salt, amine, phosphine and nickel, zinc, molybdenum, tungsten, tin this reaction to be studied as catalyzer.But these catalyzer exist, and catalytic activity is not high, product separates and problem such as catalyst recovery difficulty.Simultaneously, some catalyzer uses to exist and costs an arm and a leg, and reaction system requires anhydrous condition etc., to fairly large synthesizing annular carbonate cost problem of higher.Therefore, novel, the high reactivity of research and development, reusable catalyst system seem very important.The focus of research mainly concentrates on several aspects such as electrochemical process, ionic liquid method and organometallic complex catalysis method at present.
Electrochemical process: people such as Deng have studied the [BF at [EMIM]
4] adopt process [Yang, the Hongzhou of cyclic voltammetry catalysis epoxidation compound and carbonic acid gas synthesizing annular carbonate in the plasma liquid; Gu, Yanlong, Deng, Youquan, and Shi, Feng Chem.Commun.3 (2002) 274-275].Its advantage is the reaction conditions gentleness, the catalytic efficiency height; Shortcoming is that energy consumption is big, the cost height.
Ionic liquid method: at the beginning of 80, the research institutions such as IFP of Britain BP company and France begin to explore with the possibility of ionic liquid as solvent and catalyzer, research mainly concentrates on traditional sulfuric acid, hydrofluoric acid and the Lewis acid of ionic liquid-catalyzed system replacement and comes catalyzed reaction, and obtains better effects.In addition, people such as Cal ó and Kawanami adopt fused TBAB ionic liquid [Vincenzo Cal ó respectively, AngeloNacci, Antonio Monopoli, and Antonello Fanizzi, Org.Lett.4 (2002) 2561-2564] and have 1 of different lengths alkyl chain, 3-dialkylimidazolium and BF
4 -Ionic liquid [the HajimeKawanami that forms, Akiyoshi Sasaki, Keitaro Matsui and Yutaka Ikushima, Chem.Commun.7 (2003) 896-897] for catalyst system the reaction of catalysis epoxidation compound and carbonic acid gas synthesizing annular carbonate is studied, also obtained result preferably.The advantage of ionic liquid method is that catalytic activity is higher, and reaction conditions is gentle relatively; Shortcoming is that toxicity is bigger, and expense is higher.
Organometallic complex catalysis method: in recent years, be that the catalyst system of catalyzer also shows excellent catalytic activity with the metal complexes in the reaction of epoxy compounds and carbonic acid gas synthesizing annular carbonate.Representative catalyst system has following a few class: binaphthyldiamino salen-type Zn, Cu, Co title complex [Yu-Mei Shen, Wei-Liang Duan, and Min Shi, J.Org.Chem.68 (2003) 1559-1562]; Alkali alkyl halogenide [Takeshi Sako, Toshiyuki Fukai and RyotaroSahashi, Ind.Eng.Chem.Res.41 (2002) 5353-5358]; Crown ether-like inorganic salt title complex [Baba Akio, Nozaki Takashi, Matsuda Haruo, Bull.Chem.Soc.Jpn.60 (1987) 1552-1554; T.V.Magdesieva, S.V.Milovanov, B.V.Lokshin, Z.S.Klemenkova, L.GTomilova, Russ.Chem.47 (1998) 2137-2145.]; CrTTPCl is that catalyzer, DMAP are solvent [S.A.Lermontov, T.N.Velikokhat ' ko, S.I.Zavorin, Russ.Chem.47 (1998) 1405-1406].These catalyst systems have advantages of high catalytic activity, but its price is higher relatively and with the product separation difficulty.
JP2000344715 A discloses at 100-10, and there are the method for preparing asymmetric carbon acid esters (for example carbonic acid methylethyl ester) down in the water of 000ppm (weight) and heterogeneous catalyst.JP52-003064A (on 01 11st, 1977 open) discloses to use and has comprised that the catalyzer of Grignard reagent and nitrogenous compound prepares the method for cyclic carbonate from epoxide and carbonic acid gas.In JP5-202022A (on 08 10th, 1993), be disclosed in catalyzer (amine, amidine, guanidine, imidazoles etc.) and promotor (basic metal or alkaline earth metal halide, oxyhydroxide, alkoxide and/or carbonate) have down the method for preparing cyclic carbonate from epoxide and carbonic acid gas.In JP51013720A (on 02 03rd, 1976 open), disclose by (1) Lewis acid (halogenide of zinc, iron, aluminium etc.), (2) nitrogenous organic base (methylamine, aniline, pyridine etc.) and the mixed catalyst formed of (3) water have the method for preparing alkylene carbonates down by oxyalkylene and carbon dioxide reaction.But these patent documentations all do not relate to the application's catalyst system.
In sum, efficient, the cheap and segregative catalyst system of research and development is the important topic of catalysis epoxidation compound and carbon dioxide reaction synthesizing annular carbonate.
Three, summary of the invention
The objective of the invention is to develop a kind of cheapness, catalytic activity height, environmentally friendly, " and water is as catalyst system, the method for catalysis epoxidation compound and carbon dioxide reaction synthesizing annular carbonate (ethylene (propylene) carbonate) to adopt organic molecule acid amides RCONR ' R.
Technical solution of the present invention is as follows
A kind of epoxy compounds and carbon dioxide reaction method for cyclic carbonates is characterized in that catalystic converter system is with acid amides RCONR ' R " be catalyzer, water is the homogeneous catalytic reaction system of promotor, and this reaction comprises following step:
(1) at first acid amides is joined in the reactor, add entry and epoxy compounds again, then sealing;
(2) in reactor, charge into carbon dioxide, stir, heat to make to react and carry out;
(3) reaction is 1-20 hour, and is preferred after 1-14 hour, stops heating, stirs, and is cooled to room temperature, venting.
Above-mentioned reaction conditions comprises:
Water and acid amides RCONR ' R " volume ratio be 1: 1-1: 6, preferably 1: 1-1: 5, be more preferably 1: 1-1: 3, more more preferably 1: 1-1: 2;
Temperature of reaction is 110～160 ℃, more preferably 120-130 ℃; Pressure carbon dioxide is 40-60atm, preferred especially 50-55atm; The mol ratio of carbonic acid gas and epoxy compounds is 12 in the reactor: 1-8: 1, preferred 10: 1-9: 1; Reactor uses the pressure reactor that can seal, and this reactor comprises reactor, and reactor and reactor can be used mutually.
Cyclic carbonate and ethylene (propylene) carbonate or alkylene carbonates can be used mutually, that is to say, when mentioning cyclic carbonate, " alkene " and " alkylidene group " in ethylene (propylene) carbonate or alkylene carbonates can be used mutually.Cyclic carbonate, ethylene (propylene) carbonate or alkylene carbonates are meant with tired (kind) compound, available three kinds of different calls.
The organic molecule acid amides is by RCONR ' R, and " expression, wherein R is selected from H or CH
3Or CH
3CH
2
R ' and R " are independently from each other hydrogen, methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, sec-butyl, amyl group, isopentyl, sec.-amyl sec-pentyl secondary amyl, hexyl, isohexyl, Sec-Hexyl, wherein any or several.
Preferably, when being R when being H, RCONR ' R " is selected from N, dinethylformamide; N, N-diethylformamide, N, N-dipropyl methane amide; N, N-dibutyl formamide, N, N-diamyl methane amide; N, N-dihexyl methane amide, N, N-methylethyl methane amide; N, N-methyl-propyl methane amide, N; N-methyl butyl methane amide, N, one or more in the N-methyl amyl methane amide.
When R is CH
3The time, RCONR ' R " is selected from ethanamide, N, N-two N,N-DIMETHYLACETAMIDEs; N, N-diethyl acetamide, N, N-Valpromide; N, N dibutyl acetamide, N, N-diamyl ethanamide; N, N-dihexyl ethanamide, N, N-methylethyl ethanamide; N, N-methyl-propyl ethanamide, N; N-methyl butyl ethanamide, N, a kind of or several multiple in the N-methyl amyl ethanamide.
When R is CH
3CH
2The time, RCONR ' R " is selected from propionic acid amide, N, N dimethyl propylene acid amides; N, N-diethyl propionic acid amide, N, N-dipropyl propionic acid amide; N, N-dibutyl propionic acid amide, N, N-diamyl propionic acid amide; N, N-dihexyl propionic acid amide, N, N-methylethyl propionic acid amide; N, N-methyl-propyl propionic acid amide, N; N-methyl butyl propionic acid amide, N, one or more in the N-methyl amyl propionic acid amide.
Preferably, R is selected from H or CH
3Preferably, R ' and R " select methyl or ethyl independently of one another; Most preferably, R ' and R " are methyl or ethyl simultaneously.
Acid amides of the present invention comprises monoamide and binary acid amides.
The present invention and traditional catalyst and technology relatively have the following advantages:
1, catalyst system is simple;
2, acid amides and the water with cheapness is that catalyst system can reduce reaction cost greatly;
3, catalytic activity is higher, and by the epoxy compounds hydrolysis obtain 1,2-two diol by-product also are important fine chemical products;
4, product and catalyzer can be used simple fractionation by distillation, and catalyzer can recycle.
The present invention adopts cheap organic molecule acid amides RCONR ' R " and water not only can reduce the cost of catalyst system widely as catalyst system, and can overcome the existing not high drawback of catalyst system catalytic activity, reaction is efficiently finished; In addition, because catalyzer used in the present invention is stable organic molecule,, be eco-friendly catalyst system easily by simple recycling.
Four, embodiment
Embodiment 1:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and propylene oxide 350 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, in oil bath, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature then, venting.Reaction result: the productive rate of propylene carbonate is 68%, 1, and the productive rate of 2-propylene glycol is 32%.
Embodiment 2:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and propylene oxide 350 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of propylene carbonate is 20%, 1, and the productive rate of 2-propylene glycol is 32%.
Embodiment 3:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 4h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 87%, and 3-chloro-1, the productive rate of 2-propylene glycol are 12%.
Embodiment 4:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 2h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 70%, and 3-chloro-1, the productive rate of 2-propylene glycol are 9.3%.
Embodiment 5:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and 1,2-butylene oxide ring 440 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of butylene is 67%, 1, and the productive rate of 2-butyleneglycol is 33%.
Embodiment 6:
Measure N respectively, dinethylformamide 80 μ L (1mmol), water 36 μ L and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 160 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid hexene ester is 65%, 1, and the productive rate of 2-hexylene glycol is 27%.
Embodiment 7:
Measure N respectively, dinethylformamide 80 μ L (1mmol), water 18 μ L and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 160 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid hexene ester is 72%, 1, and the productive rate of 2-hexylene glycol is 20%.
Embodiment 8:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid hexene ester is 45%, 1, and the productive rate of 2-hexylene glycol is 21%.
Embodiment 9:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid hexene ester is 22%, 1, and the productive rate of 2-hexylene glycol is 19%.
Embodiment 10:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and epoxy styrene 690 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid styrene esters is 82%, and the productive rate of 1-phenyl-1 is 17%.
Embodiment 11:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and epoxy styrene 690 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result: carbonic acid styrene esters productive rate is 20%, and 1-phenyl-1 productive rate is 15%.
Embodiment 12:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), water 40 μ L and GLYMO (3-glycidoxypropyltrimethoxysilane) 1.1mL (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result: the cyclic carbonate productive rate is 50%.
Embodiment 13:
Measure N,N-dimethylacetamide 92 μ L (1mmol) and epoxy chloropropane 409 μ L (5mmol) respectively, join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 98%.
Embodiment 14:
Take by weighing ethanamide 59mg (1mmol) respectively and measure epoxy chloropropane 409 μ L (5mmol), join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 71%.
Embodiment 15:
Take by weighing ethanamide 73mg (1mmol) respectively and measure epoxy chloropropane 409 μ L (5mmol), join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 75%.
Comparative Examples 1:
Under the catalyst-free condition, amount epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 22h.Be cooled to the room temperature venting.Reaction result: carbonic acid propenyl chloride ester productive rate is 0%.
Comparative Examples 2:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol), methyl alcohol 40 μ L and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 4h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 47%.
Comparative Examples 3:
Measure N respectively, dinethylformamide 80 μ L (1mmol), propylene oxide 350 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of propylene carbonate is 44%.
Comparative Examples 4:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 12h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 76%.
Comparative Examples 5:
Measure N respectively, dinethylformamide 95 μ L (1.25mmol) and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 6h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 60%.
Comparative Examples 6:
Measure N respectively, dinethylformamide 40 μ L (0.5mmol) and epoxy chloropropane 409 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid propenyl chloride ester is 84%.
Comparative Examples 7:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and 1,2-butylene oxide ring 440 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of butylene is 37%.
Comparative Examples 8:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of propylene carbonate is 21%.
Comparative Examples 9:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and 1,2-epoxy hexane 610 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to the room temperature venting.Reaction result: product is a trace.
Comparative Examples 10:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and epoxy styrene 690 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid styrene esters is 62%.
Comparative Examples 11:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and epoxy styrene 690 μ L (5mmol) join in the 25-mL reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 110 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result is: the productive rate of carbonic acid styrene esters is 8%.
Comparative Examples 12:
Measure N respectively, dinethylformamide 80 μ L (1mmol) and GLYMO (3-glycidoxypropyltrimethoxysilane) 1.1mL (5mmol) join in the 25ML reactor.After the reactor sealing, in the time of 25 ℃, charge into the carbonic acid gas of 50atm.Stir, be heated to 130 ℃.Insulation reaction 15h.Be cooled to room temperature, venting.Reaction result: the cyclic carbonate productive rate is 21%.
From the contrast between the result of above embodiment and Comparative Examples as can be seen: under the existence of no acid amides, epoxide and carbonic acid gas do not react.If add the acid amides of catalytic amount in reaction system, the reaction of epoxide and carbonic acid gas generates cyclic carbonate.Simultaneously, can further promote the carrying out that react if in the acid amides catalyst system, add suitable water.
Claims (8)
1, a kind of epoxy compounds and carbon dioxide reaction method for cyclic carbonates, catalyst system in it is characterized in that reacting is with acid amides RCONR ' R " be catalyzer; water is the homogeneous catalytic reaction system of promotor, and this reaction comprises following step:
(1) at first acid amides is joined in the reactor, add entry and epoxy compounds again, then sealing;
(2) in reactor, charge into carbon dioxide, stir, heat to make to react and carry out;
(3) reaction stopped heating, stirs after 1-20 hour, was cooled to room temperature, venting,
Wherein R is selected from H or CH
3Or CH
3CH
2R ' and R " are independently from each other hydrogen, methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, sec-butyl, amyl group, isopentyl, sec.-amyl sec-pentyl secondary amyl, hexyl, isohexyl, or Sec-Hexyl.
2. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that:
Water and acid amides RCONR ' R " volume ratio be 1: 1-1: 6; Temperature of reaction is 110～160 ℃; Pressure carbon dioxide is 40-60atm; The mol ratio of carbonic acid gas and epoxy compounds is 12 in the reactor: 1-8: 1; Reactor uses the pressure reactor that can seal.
3. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
R selects H or CH
3R ' and R " select methyl or ethyl independently of one another.
4. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
R ' and R " are methyl or ethyl simultaneously.
5. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
" be selected from N, dinethylformamide, N; the N-diethylformamide, N, N-dipropyl methane amide, N; N-dibutyl formamide, N, N-diamyl methane amide, N; N-dihexyl methane amide, N, N-methylethyl methane amide; N, N-methyl-propyl methane amide, N; N-methyl butyl methane amide, N, a kind of in the N-methyl amyl methane amide when being R when being H, RCONR ' R.
6. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
When R is CH
3The time, RCONR ' R " is selected from ethanamide, N,N-dimethylacetamide; N, N-diethyl acetamide, N, N-Valpromide; N, N-dibutyl acetamide, N, N-diamyl ethanamide; N, N-dihexyl ethanamide, N, N-methylethyl ethanamide; N, N-methyl-propyl ethanamide, N; N-methyl butyl ethanamide, N, a kind of in the N-methyl amyl ethanamide.
7. according to described a kind of epoxy compounds of claim 1 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
When R is CH
3CH
2The time, RCONR ' R " is selected from propionic acid amide, N, N-dimethyl propylene acid amides; N, N-diethyl propionic acid amide, N, N-dipropyl propionic acid amide; N, N-dibutyl propionic acid amide, N, N-diamyl propionic acid amide; N, N-dihexyl propionic acid amide, N, N-methylethyl propionic acid amide; N, N-methyl-propyl propionic acid amide, N; N-methyl butyl propionic acid amide, N, a kind of in the N-methyl amyl propionic acid amide.
8. according to described a kind of epoxy compounds of claim 2 and carbon dioxide reaction method for cyclic carbonates, it is characterized in that
Water and acid amides RCONR ' R " volume ratio be 1: 1-1: 3; Temperature of reaction is 120-130 ℃; Pressure carbon dioxide is 50-55atm; The mol ratio 10 of carbonic acid gas and epoxy compounds: 1-9: 1 in the reactor.
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| CN102775379B (en) * | 2012-07-17 | 2014-01-29 | 清华大学 | Method for synthesizing cyclic carbonate |
| CN103463950B (en) * | 2013-08-19 | 2015-08-19 | 浙江大学 | A kind of capture method of temperate condition carbon dioxide |
| CN112409317B (en) * | 2020-11-26 | 2022-04-22 | 南京工业大学 | Synthesis method of cyclic carbonate and derivatives thereof |
| CN113698428A (en) * | 2021-08-31 | 2021-11-26 | 石家庄圣泰化工有限公司 | Method for synthesizing carbonic ester functionalized silane |
| CN114478463B (en) * | 2022-02-28 | 2023-05-05 | 内蒙古工业大学 | Application of SAPO-34 molecular sieve as catalyst for cyclic carbonate preparation by cycloaddition of epoxy chloropropane to carbon dioxide |
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| SK284530B6 (en) * | 1998-08-10 | 2005-06-02 | Chemickotechnologická Fakulta Stu | Process for the preparation of cyclic carbonates |
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| SK284530B6 (en) * | 1998-08-10 | 2005-06-02 | Chemickotechnologická Fakulta Stu | Process for the preparation of cyclic carbonates |
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| DMF催化环氧化物C－O键的活化反应. 华瑞茂等.有机化学，第25卷第增刊期. 2005 |
| DMF催化环氧化物C－O键的活化反应. 华瑞茂等.有机化学，第25卷第增刊期. 2005 * |
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