EP1254105A1 - Verfahren zur herstellung von alkoxymalonsäuredinitrilen - Google Patents
Verfahren zur herstellung von alkoxymalonsäuredinitrilenInfo
- Publication number
- EP1254105A1 EP1254105A1 EP01905765A EP01905765A EP1254105A1 EP 1254105 A1 EP1254105 A1 EP 1254105A1 EP 01905765 A EP01905765 A EP 01905765A EP 01905765 A EP01905765 A EP 01905765A EP 1254105 A1 EP1254105 A1 EP 1254105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- general formula
- dehydrating agent
- meaning given
- acid
- alkyl
- 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.)
- Withdrawn
Links
- -1 alkoxy malonic acid Chemical compound 0.000 title abstract description 5
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 10
- 230000018044 dehydration Effects 0.000 claims abstract description 8
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims description 13
- QAEDZJGFFMLHHQ-UHFFFAOYSA-N trifluoroacetic anhydride Chemical compound FC(F)(F)C(=O)OC(=O)C(F)(F)F QAEDZJGFFMLHHQ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 239000002841 Lewis acid Substances 0.000 claims description 5
- 150000007517 lewis acids Chemical class 0.000 claims description 5
- 239000011541 reaction mixture Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 150000001470 diamides Chemical class 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 2
- 125000003368 amide group Chemical group 0.000 claims description 2
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 claims description 2
- UHZYTMXLRWXGPK-UHFFFAOYSA-N phosphorus pentachloride Chemical compound ClP(Cl)(Cl)(Cl)Cl UHZYTMXLRWXGPK-UHFFFAOYSA-N 0.000 claims description 2
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 3
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 abstract 2
- 239000013067 intermediate product Substances 0.000 abstract 1
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- PZFUEFGAEXXPJP-UHFFFAOYSA-N COC(C#N)(O)CC#N Chemical compound COC(C#N)(O)CC#N PZFUEFGAEXXPJP-UHFFFAOYSA-N 0.000 description 5
- ZSPWEJMLRCUCIX-UHFFFAOYSA-N 2-methoxypropanediamide Chemical compound COC(C(N)=O)C(N)=O ZSPWEJMLRCUCIX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- DGJMPUGMZIKDRO-UHFFFAOYSA-N cyanoacetamide Chemical compound NC(=O)CC#N DGJMPUGMZIKDRO-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000004809 thin layer chromatography Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
- PBLGJMMEOGUSID-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoro-2-(fluoromethyl)-2-[1,1,1,3,3,3-hexafluoro-2-(fluoromethyl)propan-2-yl]oxypropane Chemical compound FCC(C(F)(F)F)(C(F)(F)F)OC(CF)(C(F)(F)F)C(F)(F)F PBLGJMMEOGUSID-UHFFFAOYSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- 125000006083 1-bromoethyl group Chemical group 0.000 description 1
- 125000001478 1-chloroethyl group Chemical group [H]C([H])([H])C([H])(Cl)* 0.000 description 1
- 125000004776 1-fluoroethyl group Chemical group [H]C([H])([H])C([H])(F)* 0.000 description 1
- HNEGJTWNOOWEMH-UHFFFAOYSA-N 1-fluoropropane Chemical group [CH2]CCF HNEGJTWNOOWEMH-UHFFFAOYSA-N 0.000 description 1
- BWOVACANEIVHST-UHFFFAOYSA-N 2-(1h-benzimidazol-2-yl)acetonitrile Chemical compound C1=CC=C2NC(CC#N)=NC2=C1 BWOVACANEIVHST-UHFFFAOYSA-N 0.000 description 1
- 125000005999 2-bromoethyl group Chemical group 0.000 description 1
- 125000001340 2-chloroethyl group Chemical group [H]C([H])(Cl)C([H])([H])* 0.000 description 1
- YOOCOQNRDYKGDP-UHFFFAOYSA-N 2-cyano-2-methoxyacetamide Chemical compound COC(C#N)C(N)=O YOOCOQNRDYKGDP-UHFFFAOYSA-N 0.000 description 1
- 125000004777 2-fluoroethyl group Chemical group [H]C([H])(F)C([H])([H])* 0.000 description 1
- WDYVUKGVKRZQNM-UHFFFAOYSA-N 6-phosphonohexylphosphonic acid Chemical compound OP(O)(=O)CCCCCCP(O)(O)=O WDYVUKGVKRZQNM-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 238000000023 Kugelrohr distillation Methods 0.000 description 1
- 229910018287 SbF 5 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910007926 ZrCl Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229940125717 barbiturate Drugs 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N benzo-alpha-pyrone Natural products C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000005997 bromomethyl group Chemical group 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 125000000332 coumarinyl group Chemical class O1C(=O)C(=CC2=CC=CC=C12)* 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 239000003193 general anesthetic agent Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- DFEYYRMXOJXZRJ-UHFFFAOYSA-N sevoflurane Chemical compound FCOC(C(F)(F)F)C(F)(F)F DFEYYRMXOJXZRJ-UHFFFAOYSA-N 0.000 description 1
- 229960002078 sevoflurane Drugs 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- NBOMNTLFRHMDEZ-UHFFFAOYSA-N thiosalicylic acid Chemical compound OC(=O)C1=CC=CC=C1S NBOMNTLFRHMDEZ-UHFFFAOYSA-N 0.000 description 1
- FQFKTKUFHWNTBN-UHFFFAOYSA-N trifluoro-$l^{3}-bromane Chemical compound FBr(F)F FQFKTKUFHWNTBN-UHFFFAOYSA-N 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/20—Preparation of carboxylic acid nitriles by dehydration of carboxylic acid amides
Definitions
- the invention relates to a process for the preparation of alkoxymalonitriles.
- Anesthetic agent sevoflurane (fluoromethyl-1,1, 1,3, 3, 3 -hexafluoro-2-propyl ether) by reacting methoxymalonitrile with bromine trifluoride.
- WO-A-98/31652 does not disclose the preparation of methoxymalonitrile.
- the object of the present invention was therefore to provide a process for the preparation of alkoxymalonitriles.
- R 1 is C ⁇ alkyl or halogen-substituted C ⁇ alkyl, by reaction of the corresponding alkoxymalonic acid diamides of the general formula
- R 1 has the meaning given above, can be prepared with a dehydrating agent.
- C 1-4 alkyl is to be understood to mean all linear or branched alkyl groups with 1-6 carbon atoms, such as, for example, methyl, ethyl,
- BESTATIGUNGSKOPIE Propyl, isopropyl, butyl, isobutyl, .yec-butyl, tert-butyl, pentyl, isopentyl, tert-pentyl, neopentyl, hexyl or isohexyl.
- Halogen-substituted C 1-4 alkyl means C 1-4 alkyl groups which are substituted one or more times by halogen. Preferred halogens are fluorine, chlorine and bromine. Fluorine is particularly preferred. Examples include: mono-, di- or trifluoromethyl, chloromethyl, bromomethyl, 1- or 2-fluoroethyl, 1- or 2-chloroethyl, 1- or 2-bromoethyl and 1-, 2- or 3-fluoropropyl.
- the radical R 1 is preferably methyl or trifluoromethyl.
- Suitable dehydrating agents are, for example, trifluoroacetic anhydride, dibutyltin oxide, phosphorus oxychloride, phosphorus trichloride or phosphorus pentachloride. Trifluoroacetic anhydride and phosphorus oxychloride are preferred.
- the dehydrating agent is advantageously used in amounts of 0.5 to 6 molar equivalents per amide group of the alkoxymalonic acid diamide of the formula II.
- Suitable solvents are, for example, acetonitrile, dioxane, 1,2-dichloroethane, toluene, cyclohexane, heptane or octane. Acetonitrile is preferred.
- the dehydration is preferably carried out in boiling solvent.
- the dehydration is optionally carried out in the presence of a Lewis acid.
- a Lewis acid examples are the following Lewis be mentioned as acids: BF 3, BC1 3, BBr 3, Bl 3, SbF 5, A1C1 3, AlBr 3, TiBr 4, TiCl 4, TiCl 3, ZrCl 4, PF 5, FeCl 3 and FeBr. 3
- A1C1 3 is preferably used as Lewis acid.
- the amount of Lewis acid is preferably 0.01 to 0.05 mol equivalent.
- the compounds of the formula II can be prepared by known processes. So z. B. in monthly Chem., 1965, 96, 1677-1689 describes a process for the preparation of alkoxymalonic acid diamides, methyl alkoxyacetate being reacted with oxalic acid dialkyl esters and the product (dialkyl alkoxymalonic acid) being reacted with liquid ammonia.
- R 1 has the meaning given above, is formed.
- the 2-cyano-2-alkoxyacetamide (III) can be isolated or the dehydration reaction is allowed to proceed until the reaction product of the formula I is formed.
- the compounds of formula III are chiral. They can therefore be in both the S configuration and the R configuration.
- the dehydration described above produces the racemate, which can be separated into the two isomers by known processes, for example by HPLC chromatography on a chiral column stationary phase.
- Chiral stationary phases are known and commercially available, for example from E. Merck, Waters, Daicel or Macherey & Nagel.
- the compounds of formula III are new and also a subject of the invention.
- the compounds of formula III can be reacted analogously to 2-cyanoacetamide, for example with 2-mercaptobenzoic acid for the preparation of 2- (4-oxobenzothiazin-2-yl) acetamide (NSuccint al., Heterocycles 1984, 22 (8 ), 1677-1682) with 1,2-diaminobenzene for the preparation of benzoimidazol-2-yl-acetonitrile (TA Fairley et al., J. Med. Chem. 1993, 36 (12), 1746-1753) or with 2-Cyanthioacetamide for the production of thiopyridines (RM Mohareb et al., Z Naturforsch. B. Anorg. Chem. Org. Chem. 1986, 41 (1), 105-109).
- the compounds of the formula III are also suitable for the preparation of barbiturates, coumarins or vitamins analogous to the known use of 2-cyanoacetamide.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01905765A EP1254105A1 (de) | 2000-02-10 | 2001-02-09 | Verfahren zur herstellung von alkoxymalonsäuredinitrilen |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00102758 | 2000-02-10 | ||
| EP00102758 | 2000-02-10 | ||
| EP00109505 | 2000-05-04 | ||
| EP00109505 | 2000-05-04 | ||
| US26708701P | 2001-02-07 | 2001-02-07 | |
| US267087P | 2001-02-07 | ||
| EP01905765A EP1254105A1 (de) | 2000-02-10 | 2001-02-09 | Verfahren zur herstellung von alkoxymalonsäuredinitrilen |
| PCT/EP2001/001505 WO2001058857A1 (de) | 2000-02-10 | 2001-02-09 | Verfahren zur herstellung von alkoxymalonsäuredinitrilen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1254105A1 true EP1254105A1 (de) | 2002-11-06 |
Family
ID=56290113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01905765A Withdrawn EP1254105A1 (de) | 2000-02-10 | 2001-02-09 | Verfahren zur herstellung von alkoxymalonsäuredinitrilen |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6673957B2 (de) |
| EP (1) | EP1254105A1 (de) |
| JP (1) | JP2003522753A (de) |
| AU (1) | AU2001233759A1 (de) |
| WO (1) | WO2001058857A1 (de) |
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| CN102498085A (zh) * | 2009-08-10 | 2012-06-13 | 苏威氟有限公司 | 用于制造七氟烷的方法 |
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| SG189933A1 (en) | 2010-10-20 | 2013-06-28 | Bioformix Llc | Synthesis of methylene malonates substantially free of impurities |
| US9279022B1 (en) | 2014-09-08 | 2016-03-08 | Sirrus, Inc. | Solution polymers including one or more 1,1-disubstituted alkene compounds, solution polymerization methods, and polymer compositions |
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| US10047192B2 (en) | 2012-06-01 | 2018-08-14 | Sirrus, Inc. | Optical material and articles formed therefrom |
| WO2014078689A1 (en) | 2012-11-16 | 2014-05-22 | Bioformix Inc. | Plastics bonding systems and methods |
| EP2926368B1 (de) | 2012-11-30 | 2020-04-08 | Sirrus, Inc. | Elektronische anordnung |
| CN105008321A (zh) | 2013-01-11 | 2015-10-28 | 瑟拉斯公司 | 经过双(羟甲基)丙二酸酯的途径获得亚甲基丙二酸酯的方法 |
| JP2016522231A (ja) | 2013-06-21 | 2016-07-28 | バイエル ファーマ アクチエンゲゼルシャフト | ジアミノヘテロアリール置換ピラゾール類 |
| US9765058B2 (en) | 2013-06-21 | 2017-09-19 | Bayer Pharma Aktiengesellschaft | Substituted benzylpyrazoles |
| US9416091B1 (en) | 2015-02-04 | 2016-08-16 | Sirrus, Inc. | Catalytic transesterification of ester compounds with groups reactive under transesterification conditions |
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| US10501400B2 (en) | 2015-02-04 | 2019-12-10 | Sirrus, Inc. | Heterogeneous catalytic transesterification of ester compounds with groups reactive under transesterification conditions |
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| US9217098B1 (en) | 2015-06-01 | 2015-12-22 | Sirrus, Inc. | Electroinitiated polymerization of compositions having a 1,1-disubstituted alkene compound |
| US9518001B1 (en) | 2016-05-13 | 2016-12-13 | Sirrus, Inc. | High purity 1,1-dicarbonyl substituted-1-alkenes and methods for their preparation |
| US9567475B1 (en) | 2016-06-03 | 2017-02-14 | Sirrus, Inc. | Coatings containing polyester macromers containing 1,1-dicarbonyl-substituted 1 alkenes |
| US9617377B1 (en) | 2016-06-03 | 2017-04-11 | Sirrus, Inc. | Polyester macromers containing 1,1-dicarbonyl-substituted 1 alkenes |
| US10196481B2 (en) | 2016-06-03 | 2019-02-05 | Sirrus, Inc. | Polymer and other compounds functionalized with terminal 1,1-disubstituted alkene monomer(s) and methods thereof |
| US10428177B2 (en) | 2016-06-03 | 2019-10-01 | Sirrus, Inc. | Water absorbing or water soluble polymers, intermediate compounds, and methods thereof |
| CN108586287A (zh) * | 2018-01-22 | 2018-09-28 | 精华制药集团南通有限公司 | 一种2-苯基-2-氰基丁酰胺的制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5705710A (en) | 1997-01-15 | 1998-01-06 | University Of Iowa Research Foundation | Process for the synthesis of hexafluoroisopropyl ethers |
-
2001
- 2001-02-09 JP JP2001558409A patent/JP2003522753A/ja active Pending
- 2001-02-09 AU AU2001233759A patent/AU2001233759A1/en not_active Abandoned
- 2001-02-09 WO PCT/EP2001/001505 patent/WO2001058857A1/de not_active Ceased
- 2001-02-09 EP EP01905765A patent/EP1254105A1/de not_active Withdrawn
- 2001-02-09 US US10/182,716 patent/US6673957B2/en not_active Expired - Fee Related
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2003
- 2003-09-30 US US10/673,988 patent/US20040063987A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0158857A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US6673957B2 (en) | 2004-01-06 |
| AU2001233759A1 (en) | 2001-08-20 |
| JP2003522753A (ja) | 2003-07-29 |
| US20030144538A1 (en) | 2003-07-31 |
| US20040063987A1 (en) | 2004-04-01 |
| WO2001058857A1 (de) | 2001-08-16 |
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