EP0000218B1 - Verfahren zur Isolierung von 1,4,7,10,13,16-Hexaoxacycloocta-decan - Google Patents
Verfahren zur Isolierung von 1,4,7,10,13,16-Hexaoxacycloocta-decan Download PDFInfo
- Publication number
- EP0000218B1 EP0000218B1 EP78200037A EP78200037A EP0000218B1 EP 0000218 B1 EP0000218 B1 EP 0000218B1 EP 78200037 A EP78200037 A EP 78200037A EP 78200037 A EP78200037 A EP 78200037A EP 0000218 B1 EP0000218 B1 EP 0000218B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crown
- nitromethane
- complex
- ether
- hexaoxacyclooctadecane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XEZNGIUYQVAUSS-UHFFFAOYSA-N 18-crown-6 Chemical compound C1COCCOCCOCCOCCOCCO1 XEZNGIUYQVAUSS-UHFFFAOYSA-N 0.000 title claims description 93
- 238000000034 method Methods 0.000 title claims description 26
- 238000002955 isolation Methods 0.000 title claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 65
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 claims description 49
- 239000002904 solvent Substances 0.000 claims description 33
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 24
- 229920000570 polyether Polymers 0.000 claims description 22
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 claims description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 150000002430 hydrocarbons Chemical class 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 150000004292 cyclic ethers Chemical group 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 150000001983 dialkylethers Chemical group 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical group C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 34
- 238000002474 experimental method Methods 0.000 description 13
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- 239000004721 Polyphenylene oxide Substances 0.000 description 11
- 239000002244 precipitate Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000001103 potassium chloride Substances 0.000 description 6
- 235000011164 potassium chloride Nutrition 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010668 complexation reaction Methods 0.000 description 3
- ZNSMNVMLTJELDZ-UHFFFAOYSA-N Bis(2-chloroethyl)ether Chemical compound ClCCOCCCl ZNSMNVMLTJELDZ-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000012047 saturated solution Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- AGYUOJIYYGGHKV-UHFFFAOYSA-N 1,2-bis(2-chloroethoxy)ethane Chemical compound ClCCOCCOCCCl AGYUOJIYYGGHKV-UHFFFAOYSA-N 0.000 description 1
- OOTYQRGBXHSKRG-UHFFFAOYSA-N 1,4,7,10,13,16,19,22,25,28,31,34-dodecaoxacyclohexatriacontane Chemical compound C1COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO1 OOTYQRGBXHSKRG-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- IIRDTKBZINWQAW-UHFFFAOYSA-N hexaethylene glycol Chemical compound OCCOCCOCCOCCOCCOCCO IIRDTKBZINWQAW-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 125000002346 iodo group Chemical group I* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006384 oligomerization reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006798 ring closing metathesis reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- -1 which was sucked off Chemical compound 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D323/00—Heterocyclic compounds containing more than two oxygen atoms as the only ring hetero atoms
Definitions
- the invention relates to a process for the isolation of 1,4,7,10,13,16-hexaoxacydooctadecane from a mixture also containing one or more other macrocyclic polyethers.
- 18-Crown-6 can be prepared by heating tetraethylene glycol and bis(2-chloroethyl) ether in the presence of tetrahydrofuran as a solvent and potassium hydroxide, see "Synthesis" 1976, 515-516.
- the reaction mixture thus formed contains 18-crown-6, potassium chloride, water and by-products, i.a. macrocyclic polyethers having a ring of larger size than 18-crown-6.
- the solvent was evaporated from the reaction mixture to give a brown slurry to which dichloromethane was added.
- the invention provides a process for the isolation of 1,4,7,10,13,16-hexaoxacyclooctadecane from a mixture also containing one or more other macrocyclic polyethers containing rings of more than 7 carbon atoms, characterized by reacting the 1,4,7,10,13,16-hexaoxacyctooctadecane with nitromethane in the presence of a solvent for the said macrocyclic polyethers, to precipitate a complex of 1,4,7,10,13,16-hexaoxacyclooctadecane and nitromethane, separating precipitated complex from the mixture containing the complex, dissociating separated complex and separating the components from each other.
- nitromethane is selective in that, when contacted with a mixture containing 18- crown-6 and one or more other macrocyclic polyethers, it only forms a complex with 18-crown-6.
- the 18-crown-6-nitromethane complex obtained according to the invention does not, or hardly contains any macrocyclic polyethers other than 18-crown-6.
- the complex can simply be dissociated into 18-crown-6 and nitromethane by allowing it to stand in the open air.
- the complex is rapidly dissociated by heating it at sub-atmospheric pressure and removing the nitromethane vapour formed, leaving pure or almost pure 18-crown-6. Heating may take place at a temperature of, for example, 35°C to 125°C at a pressure of, for example, 5 to 1500 Pa.
- the process according to the invention must be carried out in a solvent for macrocyclic polyethers in which the 18-crown-6-nitromethane complex can be precipitated.
- a solvent may substantially consist of nitromethane.
- a solvent is taken to consist substantially of a specified compound when the content of this specified compound in the solvent is higher than 50%w.
- the solvent substantially consists of an ether (other than a macrocyclic polyester having more than 7 carbon atoms in the ring).
- Preferred ethers are dialkyl ethers and cyclic ethers.
- dialkyl ethers are diethyl ether, di-n-butyl ether and di-n-hexylether.
- the 18-crown-6-nitromethane complex is considerably less soluble in diethyl ether than in nitromethane at the same temperature, so that a considerably larger part of the 18-crown-6 present in the starting mixture can be isolated.
- Attractive examples of the cyclic ethers are 1,4-dioxane and tetrahydrofuran.
- the solvent substantially consists of an alkanol, a hydrocarbon (or a mixture of hydrocarbons) or water.
- suitable alkanols are those having in the range of from one to five carbon atoms, for example methanol, ethanol, 2-propanol and tert- butanol.
- suitable hydrocarbons are benzene, toluene, the three xylenes and heptane.
- Particularly attractive solvents are methanol and benzene.
- 18-Crown-6 dissolved in water may be removed therefrom by reaction with nitromethane to form a precipitate of the 18-crown-6-nitromethane complex in nitromethane-containing water. Mixtures of solvents may be used, for example of diethyl ether and ethanol.
- the 18-crown-6-acetonitrile complex is very difficult to precipitate from the solvents mentioned in the last three paragraphs, if at all, as this complex is too highly soluble in these solvents.
- the reaction between 18-crown-6 and nitromethane is preferably carried out at a temperature in the range of from -25°C to +35°C, and, when the solvent substantially consists of nitromethane, of from 0°C to -25°C, so as to enable a very large part of the 18-crown-6 to be isolated.
- the solvent substantially consists of an ether, an alkanol, a hydrocarbon (or a mixture of hydrocarbons) or water
- the reaction between 18-crown-6 and nitromethane is very suitably carried out at a temperature in the range of from 0°C to +35°C.
- Ambient Temperature for example, a temperature between 15°C and 25°, is very suitable.
- the 18-crown-6-nitromethane complex can easily be separated from the mixture containing the complex, for example by filtration, centrifugation or decantation.
- the 18-crown-6-nitromethane complex contains two molecules of nitromethane per molecule of 18-crown-6. Accordingly, the 18-crown-6 is reacted with nitromethane using a molar ratio of nitromethane to 18-crown-6 of at least 2:1. Preferably, this molar ratio is not higher than 20:1. This range is not critical, molar ratios of nitromethane to 18-crown-6 outside this range may be used, if desired.
- the 18-crown-6-nitromethane complex may be precipitated in any suitable manner, for example by adding nitromethane to the starting mixture and, if desired, cooling the mixture thus obtained to a suitable temperature, or by dissolving the starting mixture in diethyl ether and adding nitromethane at ambient temperature to the solution obtained, or by dissolving the starting mixture in any other of the above-mentioned solvents, for example methanol, adding nitromethane and, if desired, cooling the mixture obtained to a suitable temperature.
- the starting mixture may be solid or liquid at the temperature at which the 18-crown-6 is reacted with nitromethane.
- the 18-crown-6 in the starting mixture may have been formed by any process. Very good results have been obtained by reacting tetraethylene glycol with a bis(2-haloethyl)ether, halo representing chloro, bromo or iodo, in the presence of an alkali metal hydroxide. If desired, the alkali metal halide formed and solvent, if present, may be removed from the reaction mixture obtained, leaving the 18-crown-6-containing starting mixture.
- Other examples of processes for the preparation of 18-crown-6 are:
- Acetonitrile (1.48 mmol) was added to a solution of 18-crown-6 (0.19 mmol) and macrocyclic polyether No. 3 of the formula page (0.19 mmol) in diethyl ether (1 ml) at 25°C.
- the 18-crown-6-acetonitrile complex crystallized out immediately and was filtered off. It contained 40% of the starting amount of 18-crown-6.
- Comparison with Example VI shows that nitromethane had complexed a much larger part of the 18-crown-6 than acetonitrile. The purity of the 18-crown-6 was more than 99%.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2633377 | 1977-06-23 | ||
GB2633377 | 1977-06-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0000218A1 EP0000218A1 (de) | 1979-01-10 |
EP0000218B1 true EP0000218B1 (de) | 1981-11-11 |
Family
ID=10242029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP78200037A Expired EP0000218B1 (de) | 1977-06-23 | 1978-06-12 | Verfahren zur Isolierung von 1,4,7,10,13,16-Hexaoxacycloocta-decan |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0000218B1 (de) |
JP (1) | JPS6034955B2 (de) |
CA (1) | CA1095922A (de) |
DE (1) | DE2861306D1 (de) |
IT (1) | IT1096598B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MY128673A (en) * | 1997-10-30 | 2007-02-28 | Shell Int Research | Catalytic hydrolysis of alkylene oxides |
WO2017062398A1 (en) * | 2015-10-08 | 2017-04-13 | Novelis Inc. | A process for warm forming an age hardenable aluminum alloy in t4 temper |
-
1978
- 1978-06-05 CA CA304,729A patent/CA1095922A/en not_active Expired
- 1978-06-12 EP EP78200037A patent/EP0000218B1/de not_active Expired
- 1978-06-12 DE DE7878200037T patent/DE2861306D1/de not_active Expired
- 1978-06-21 IT IT24811/78A patent/IT1096598B/it active
- 1978-06-21 JP JP53074318A patent/JPS6034955B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0000218A1 (de) | 1979-01-10 |
IT1096598B (it) | 1985-08-26 |
IT7824811A0 (it) | 1978-06-21 |
JPS549291A (en) | 1979-01-24 |
CA1095922A (en) | 1981-02-17 |
JPS6034955B2 (ja) | 1985-08-12 |
DE2861306D1 (en) | 1982-01-14 |
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