WO2001046113A1 - Process for producing fluorocarboxylic anhydride - Google Patents
Process for producing fluorocarboxylic anhydride Download PDFInfo
- Publication number
- WO2001046113A1 WO2001046113A1 PCT/JP2000/008765 JP0008765W WO0146113A1 WO 2001046113 A1 WO2001046113 A1 WO 2001046113A1 JP 0008765 W JP0008765 W JP 0008765W WO 0146113 A1 WO0146113 A1 WO 0146113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reaction
- coc
- alkaline earth
- earth metal
- atom
- 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.)
- Ceased
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
Definitions
- the present invention relates to a method for producing fluorocarboxylic anhydride using RfCOC1 as a raw material. Related technology
- the P 2 0 5 is a dehydrating agent, but Ru Nodea dehydration of water of usually 3 molecules, can not be exerted force dehydrated ability of one molecule dehydrated par full O b carboxylic acid, tooth
- Ru Nodea dehydration of water of usually 3 molecules can not be exerted force dehydrated ability of one molecule dehydrated par full O b carboxylic acid, tooth
- the reaction is stopped round while having a dewatering capability. Therefore, it is difficult post-processing of the P 2 0 5 after completion of the reaction.
- Synthesis method 2 requires an excessive amount of CF 3 C 0 2 H, and the conversion of CF 3 C ⁇ 2 H is low. Further, the by-product CHC 1 2 C0 2 H in order to dehydrating, further is required (P 2 0 5 as an example) a dehydrating agent, the cost of the product H 3 P0 4 to be waste liquid treatment is also required.
- An object of the present invention is to provide a method of synthesizing no drawbacks as described above, i.e. from Ide Rf COC l such a plurality of steps of (R f CO) 2 0.
- a method for producing (R f CO) 20 with high yield by using R f COC l and inexpensive alkali metal or alkaline earth metal carbonate is found.
- R f is a saturated hydrocarbon group having 1 to 20 carbon atoms which may have an oxygen atom, in which all or a part of a hydrogen atom is substituted with a fluorine atom or a fluorine atom and another halogen atom.
- M is an alkali or alkaline earth metal
- m is 2 if M is an alkali metal
- R f is a saturated hydrocarbon group having 1 to 20 carbon atoms which may have an oxygen atom, in which all or a part of a hydrogen atom is substituted with a fluorine atom or a fluorine atom and another halogen atom.
- M is an alkali or alkaline earth metal
- m is 2 if M is an alkali metal
- R f represents all or part of a hydrogen atom as a fluorine atom or a fluorine atom and another halo It is a saturated hydrocarbon group having 1 to 20, especially 1 to 10 carbon atoms which may have an oxygen atom and is substituted by a gen atom. R f has at least one fluorine atom.
- each X is a halogen atom or a hydrogen atom, but at least one X is a fluorine atom.
- n :! ⁇ 10 integers, m :! An integer of ⁇ 5, s :! T is an integer from 1 to 10; ]
- R f may be a perfluoroalkyl group (F (CF 2 ) i—), which may be linear or branched.
- i is 1-20, for example 1-10, preferably 1
- R f COC 1 Specific examples include:
- M is an alkali metal or an alkaline earth metal, and is preferably L i, N a, K, or C a.
- R f CO depends 2 0 carbonates used yield, better high stability of MC 1 2 I of salt produced during the reaction.
- C a C ⁇ 3 , N a 2 C_ ⁇ 3, L i 2 C0 3 are preferred.
- the molar ratio between R f COC 1 and the carbonate is preferably 2 or more.
- the reaction temperature is preferably from 0 to 150 ° C, for example, from 10 to 50 ° C.
- a high reaction temperature is not preferred because the product starts to decompose.
- the reaction time is not particularly limited, but may be 20 to 600 minutes, for example, 120 to 240 minutes.
- (R f CO) 20 is synthesized with a high yield in a one-step reaction by using R f CO C 1 and an inexpensive alkali metal or alkaline earth metal carbonate.
- a solvent may not be used, but since an exothermic reaction is involved, a solvent may be used for heat removal.
- a polar solvent and a non-polar solvent can be used.
- n CH 3 (n 0 ⁇ 4), nitrobenzene (C 6 H 5 N0 2) , dimethylformamidine de (DMF), dimethyl sulfoxide (DMSO), and acetone.
- the non-polar solvent, a fluorine-based solvent (e.g., C 4 F 6 C 1 4 , C 6 F 9 C 1 5), CC 1 4, C n H 2n + 2 (n 5 ⁇ : 10) and the like .
- R f COC 1 is CF 3 COC 1 and the carbonate is Na 2 CO 3
- the overall reaction is 2 CF 3 C ⁇ C 1 + Na 2 C0 3 ⁇ (CF 3 CO) 2 0+ 2Na C 1 + C0 2 force
- This reaction is CF 3 C ⁇ C 1 + Na 2 C0 3 ⁇ CF 3 COONa + Na C
- this reaction can proceed in one step.
- the power can be divided into two steps as described above.
- the reactor pressure does not need to be increased, which is advantageous in terms of equipment (pressure resistance).
- a polar solvent is used, the above two-step reaction can proceed quantitatively. That is, when the CF 3 COC 1 raw material (equivalent raw material) suitable for the first-stage reaction is introduced, the reaction stops at the first-stage reaction without proceeding to the second-stage reaction. Therefore, when carbon dioxide gas is removed on the way, it is more advantageous because the raw material is released without loss.
- the reaction is finally performed at 70 ° C. or lower, preferably 50 ° C. or lower, more preferably 30 ° C. or lower. Therefore, it is preferable to carry out the reaction at this temperature also when recovering the target product, and it is preferable to carry out the distillation under reduced pressure.
- R f CO 20 obtained by the present invention can be used as an R f CO agent and a dehydrating agent.
- Preferred embodiments of the invention
- Example 3 250 cc SUS autoclave was charged with dry N a 2 C0 3 9. 3 g (87. 7 mmo l), then charged C 4 F 6 C 1 4 to 5 Om 1 as a solvent.
- the autoclave was cooled with dry ice / acetone, charged with 25.2 g (190.2 mmo 1) of CF 3 COC, and reacted by stirring.
- the reaction temperature was 71.1 ° C to 776 ° C, and the reaction time was 222 minutes.
- the maximum pressure was 0.83 MPa.
- the yield was 85.2% of 19 F-NMR (conversion 85.2%, selectivity 100%).
- the autoclave In the first-stage reaction, the autoclave is cooled in an ice bath, charging time: 3 to 6 min, reaction time after charging: 1 Omin, and then CO ⁇ blowing time: 5 min. 9 g of CF 3 COC 1 was charged and the reaction was repeated (charged 9 times). The final CF 3 COC 1 used in the reaction was 254 g (1.92 mol). The first stage after the completion of the reaction, was 30 Om 1 withdrawn at a reduced pressure of CH 3 CN to 40 OmmH g.
- (R f CO) 2 O can be produced by a one-step reaction using R f COC 1 as a raw material.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE60012991T DE60012991T2 (de) | 1999-12-21 | 2000-12-12 | Verfahren zur herstellung eines fluorocarbonsäureanhydrides |
| JP2001546626A JP4701577B2 (ja) | 1999-12-21 | 2000-12-12 | フルオロカルボン酸無水物の製造方法 |
| EP00980053A EP1254886B1 (en) | 1999-12-21 | 2000-12-12 | Process for producing fluorocarboxylic anhydride |
| US10/168,560 US6903236B2 (en) | 1999-12-21 | 2000-12-12 | Process for producing fluorocarboxylic anhydride |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36263199 | 1999-12-21 | ||
| JP11/362631 | 1999-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001046113A1 true WO2001046113A1 (en) | 2001-06-28 |
Family
ID=18477353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2000/008765 Ceased WO2001046113A1 (en) | 1999-12-21 | 2000-12-12 | Process for producing fluorocarboxylic anhydride |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6903236B2 (ja) |
| EP (1) | EP1254886B1 (ja) |
| JP (1) | JP4701577B2 (ja) |
| DE (1) | DE60012991T2 (ja) |
| WO (1) | WO2001046113A1 (ja) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4538523B1 (ja) * | 1968-04-30 | 1970-12-05 | ||
| US3676491A (en) * | 1968-06-18 | 1972-07-11 | Daikin Ind Ltd | Process for preparing trifluoroacetic anhydride |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS466888Y1 (ja) | 1967-03-01 | 1971-03-11 | ||
| FR2565967B1 (fr) * | 1984-06-13 | 1986-09-12 | Rhone Poulenc Spec Chim | Procede de preparation d'anhydride trifluoracetique |
| JP2001064228A (ja) * | 1999-08-25 | 2001-03-13 | Daikin Ind Ltd | フルオロカルボン酸無水物の製造方法 |
-
2000
- 2000-12-12 US US10/168,560 patent/US6903236B2/en not_active Expired - Lifetime
- 2000-12-12 WO PCT/JP2000/008765 patent/WO2001046113A1/ja not_active Ceased
- 2000-12-12 EP EP00980053A patent/EP1254886B1/en not_active Expired - Lifetime
- 2000-12-12 JP JP2001546626A patent/JP4701577B2/ja not_active Expired - Fee Related
- 2000-12-12 DE DE60012991T patent/DE60012991T2/de not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4538523B1 (ja) * | 1968-04-30 | 1970-12-05 | ||
| US3676491A (en) * | 1968-06-18 | 1972-07-11 | Daikin Ind Ltd | Process for preparing trifluoroacetic anhydride |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1254886A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1254886A1 (en) | 2002-11-06 |
| JP4701577B2 (ja) | 2011-06-15 |
| US6903236B2 (en) | 2005-06-07 |
| DE60012991D1 (de) | 2004-09-16 |
| DE60012991T2 (de) | 2005-08-18 |
| EP1254886A4 (en) | 2003-07-16 |
| US20020183550A1 (en) | 2002-12-05 |
| EP1254886B1 (en) | 2004-08-11 |
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