WO2001081320A1 - 2-alkoxy-5-methoxypyrimidine bzw. deren tautomere formen sowie verfahren zu deren herstellung - Google Patents
2-alkoxy-5-methoxypyrimidine bzw. deren tautomere formen sowie verfahren zu deren herstellung Download PDFInfo
- Publication number
- WO2001081320A1 WO2001081320A1 PCT/EP2001/004345 EP0104345W WO0181320A1 WO 2001081320 A1 WO2001081320 A1 WO 2001081320A1 EP 0104345 W EP0104345 W EP 0104345W WO 0181320 A1 WO0181320 A1 WO 0181320A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkoxy
- methoxypyrimidines
- hydroxy
- reaction
- alkylisourea
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000002585 base Substances 0.000 claims description 19
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 15
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 9
- -1 aliphatic hydrocarbon radical Chemical class 0.000 claims description 7
- 150000001447 alkali salts Chemical class 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- RMAHPRNLQIRHIJ-UHFFFAOYSA-N methyl carbamimidate Chemical compound COC(N)=N RMAHPRNLQIRHIJ-UHFFFAOYSA-N 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- HEFJCHKCDAWHDQ-UHFFFAOYSA-N ethyl carbamimidate Chemical compound CCOC(N)=N HEFJCHKCDAWHDQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 4
- GOCCAKSOVPOSMC-UHFFFAOYSA-N 3-hydroxy-2-methoxyprop-2-enoic acid Chemical compound COC(=CO)C(O)=O GOCCAKSOVPOSMC-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 125000005907 alkyl ester group Chemical group 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- ZZUFFOQIEWLWAY-UHFFFAOYSA-N 1-(thiophen-2-ylmethyl)piperazine;dihydrochloride Chemical compound Cl.Cl.C=1C=CSC=1CN1CCNCC1 ZZUFFOQIEWLWAY-UHFFFAOYSA-N 0.000 claims description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 2
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- 230000001476 alcoholic effect Effects 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- GGSUCNLOZRCGPQ-UHFFFAOYSA-N diethylaniline Chemical compound CCN(CC)C1=CC=CC=C1 GGSUCNLOZRCGPQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 125000004494 ethyl ester group Chemical group 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 2
- MDFRYRPNRLLJHT-UHFFFAOYSA-N methyl carbamimidate;sulfuric acid Chemical compound COC(N)=N.OS(O)(=O)=O MDFRYRPNRLLJHT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 150000002825 nitriles Chemical class 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 239000011698 potassium fluoride Substances 0.000 claims description 2
- 235000003270 potassium fluoride Nutrition 0.000 claims description 2
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011775 sodium fluoride Substances 0.000 claims description 2
- 235000013024 sodium fluoride Nutrition 0.000 claims description 2
- 125000003396 thiol group Chemical group [H]S* 0.000 claims description 2
- 150000003573 thiols Chemical class 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims 1
- 239000004202 carbamide Substances 0.000 claims 1
- 239000002244 precipitate Substances 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 claims 1
- 239000002243 precursor Substances 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 4
- UXCDUFKZSUBXGM-UHFFFAOYSA-N phosphoric tribromide Chemical compound BrP(Br)(Br)=O UXCDUFKZSUBXGM-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- JEARLRMCZMBVFC-UHFFFAOYSA-N 2,5-dimethoxy-1h-pyrimidin-6-one Chemical compound COC1=CN=C(OC)N=C1O JEARLRMCZMBVFC-UHFFFAOYSA-N 0.000 description 2
- JIADELSANNMYFC-UHFFFAOYSA-N 5-methoxypyrimidine Chemical class COC1=CN=CN=C1 JIADELSANNMYFC-UHFFFAOYSA-N 0.000 description 2
- QLDLBDOAIAUSCU-UHFFFAOYSA-N COC(=C(C)O)C(O)=O Chemical compound COC(=C(C)O)C(O)=O QLDLBDOAIAUSCU-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- BTTNYQZNBZNDOR-UHFFFAOYSA-N 2,4-dichloropyrimidine Chemical compound ClC1=CC=NC(Cl)=N1 BTTNYQZNBZNDOR-UHFFFAOYSA-N 0.000 description 1
- XOJPOIGPYBYDJF-UHFFFAOYSA-N 2,5-dimethoxypyrimidin-4-amine Chemical compound COC1=CN=C(OC)N=C1N XOJPOIGPYBYDJF-UHFFFAOYSA-N 0.000 description 1
- SADHVOSOZBAAGL-UHFFFAOYSA-N 3-(trifluoromethoxy)aniline Chemical compound NC1=CC=CC(OC(F)(F)F)=C1 SADHVOSOZBAAGL-UHFFFAOYSA-N 0.000 description 1
- BASQEQQOGLYRSJ-UHFFFAOYSA-N 3-pyrrolidin-1-ylsulfonylbenzonitrile Chemical compound C=1C=CC(C#N)=CC=1S(=O)(=O)N1CCCC1 BASQEQQOGLYRSJ-UHFFFAOYSA-N 0.000 description 1
- CFOZTZJHBPCPLO-UHFFFAOYSA-N 4-chloro-2,5-dimethoxypyrimidine Chemical compound COC1=CN=C(OC)N=C1Cl CFOZTZJHBPCPLO-UHFFFAOYSA-N 0.000 description 1
- PCFMDDLVLHIRNK-UHFFFAOYSA-N 5-methoxy-2-methylsulfanyl-1h-pyrimidin-6-one Chemical compound COC1=CN=C(SC)NC1=O PCFMDDLVLHIRNK-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QRMHDGWGLNLHMN-UHFFFAOYSA-N Methyl methoxyacetate Chemical compound COCC(=O)OC QRMHDGWGLNLHMN-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- ISAKRJDGNUQOIC-UHFFFAOYSA-N Uracil Chemical class O=C1C=CNC(=O)N1 ISAKRJDGNUQOIC-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001819 mass spectrum Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- RMIODHQZRUFFFF-UHFFFAOYSA-N methoxyacetic acid Chemical class COCC(O)=O RMIODHQZRUFFFF-UHFFFAOYSA-N 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000012485 toluene extract Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/60—Three or more oxygen or sulfur atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/52—Two oxygen atoms
Definitions
- the present invention relates to 2-alkoxy-5-methoxypyrimidines and their tautomeric forms and to processes for their preparation.
- 5-methoxypyrimidines are important intermediates for the production of pharmaceutical or agrochemical active substances.
- the active substance also contains a 2-alkoxy group in addition to other substituents.
- Such applications are e.g. B. in the publications US 5, 1 63.995, DE-OS 40 29 648, FR-A 1 33 31 8 or in Collect. Czech. Chem. Commun. 59 (2), 482 (1 994).
- a disadvantage of this production process is the extremely long reaction sequence, which, because of the lack of regioselectivity between the 2- and 4-positions on the pyrimidine ring, also tends to form isomers and also only gives low overall yields.
- the invention was therefore based on the object of providing new 2-alkoxy-5-methoxypyrimidines or their tautomeric forms which are relatively easy to produce technically and in high yields. This object was achieved according to the invention by the 2-alkoxy-5-methoxypyrimidines according to claim 1.
- R is a linear or branched and optionally unsaturated aliphatic
- the 2-alkoxy-5-methoxypyrimidines according to the invention can be synthesized from simple precursors in a few reaction steps and in high yields.
- the 2-alkoxy-4-hydroxy-5-methoxypyrimidines can be prepared by adding an alkyl ester of 3-hydroxy-2-methoxyacrylic acid or its tautomeric forms or an alkali salt thereof with an O-alkylisourea or a corresponding one Salt.
- Preferred alkyl esters of 3-hydroxy-2-methoxyacrylic acid are the corresponding methyl and ethyl esters. These compounds are preferably prepared from methoxyacetic acid esters in a known manner and reacted without isolation and further purification.
- Preferred alkali salts of the 3-hydroxy-2-methoxyacrylic acid alkyl ester are its sodium or potassium salt.
- those of O-methylisourea and O-ethylisourea or salts thereof are used as O-alkylisourea compounds.
- O-methylisourea sulfate, O-methylisourea hydrogen sulfate, the free O-methylisourea base, O-ethylisourea hydrochloride, O-ethylisourea hydrogen sulfate and the free O-ethylisourea base are used.
- C r C 4 alcohols especially methanol or ethanol are preferably used.
- the bases which are preferably used are the free O-alkylisourea, sodium hydroxide, sodium methylate or sodium ethylate.
- the molar ratio of 3-hydroxy-2-methoxyacrylic acid alkyl ester to O-alkylisourea derivative can be varied within wide limits, but it has proven to be particularly advantageous to set this ratio to 1: 2 to 2: 1.
- 1 to 5 mol of base are preferably used per mol of the desired pyrimidine compound.
- reaction of the 3-hydroxymethoxyacrylic acid alkyl ester (or its dautomeric forms or alkali salts) with the O-alkylisourea (salt) is carried out at temperatures between 20 and 100 ° C., in particular at 40 to 80 ° C.
- the reaction time can vary within wide limits, for economic reasons it is preferably 2 to 1 2 h.
- the 2-alkoxy-4-hydroxy-5-methoxypyrimidines obtained in this way are preferably precipitated from the reaction mixture by adjusting the pH to 2.0 to 8.0 and separated off by customary methods, for example by filtration.
- 2-alkoxy-4-hydroxy-5-methoxypyrimidines can easily be e.g. react with phosphorus oxychloride to the 2-alkoxy-4-chloro-5-methoxypyrimidines or with phosphorus oxybromide to the corresponding 2-alkoxy-4-bromo-5-methoxypyrimidines.
- auxiliary bases are, for example, triethylamine, dimethylaniline and diethylaniline. These auxiliary bases are used in an amount of 0 to 1 mol of auxiliary base per mol of 2-alkoxy-4-hydroxy-5-methoxypyrimidine.
- Suitable solvents are in principle all organic solvents that are inert towards phosphorus oxychloride or phosphorus oxybromide, such as. B. toluene, xylene, hexane, cyclohexane or dichloromethane.
- the corresponding reaction takes place at a temperature of 40 to 120 ° C., preferably 70 to 110 ° C.
- the 2-alkoxy-4-chloro-5-methoxypyrimidines according to the invention or the 2-alkoxy-4-bromo-5-methoxypyrimidines which can be prepared analogously can be prepared using conventional subsequent reactions, for. B. by reaction with potassium fluoride or sodium fluoride in the corresponding 2-alkoxy-4-fluoro-5-methoxypyrimidines.
- the reaction with the thiols R 3 SR or its alkali metal salts in an organic solvent can also be carried out analogously at temperatures between 40 and 120 ° C. Possibly. can then the mercapto group SR 3 with suitable oxidizing agents such. B.
- HOCl or peroxo compounds especially hydrogen peroxide
- Hydrocarbons, alcohols, ethers, esters, amides or nitriles have proven to be particularly advantageous as organic solvents.
- the 2-alkoxy-5-methoxypyrimidines according to the invention can be prepared in a few reaction steps, in excellent yields and in a technically simple manner.
- Example 1 31 5.5 g of 2-methoxyacetic acid methyl ester were mixed with 1485.8 g of methyl formate. 83.8 g of solid sodium methylate were metered into this mixture at 15 ° C. over 90 minutes. The mixture was stirred at 15 ° C for 22 hours. Then 450 g of methanol were added and the excess methyl formate was distilled off. A methanolic suspension of crude methyl 3-hydroxy-2-methoxyacrylic acid was obtained.
- Example 3 The suspension of methyl 3-hydroxy-2-methoxyacrylic acid obtained according to Example 1 was placed at 40 ° C. and the solution of O-methylisourea base obtained according to Example 2 was metered in over 2 hours. The mixture was then heated to 65 ° C. for 8 hours. Then 450 g of water were added and the methanol was distilled off as completely as possible. The dispersion obtained was adjusted from pH 1 3 to pH 5 with 321 g of 37% hydrochloric acid and stirred at room temperature for 2 hours. The precipitated product was filtered off, washed and dried at 60 ° C in a vacuum.
- the entire batch was poured onto 600 g of ice water, stirred for 1 2 hours and adjusted to pH 5 with sodium hydroxide solution.
- the toluene phase was separated off, the water phase was extracted a further 3 times with 50 mol of toluene each.
- the combined toluene extracts were evaporated to dryness.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/203,917 US6620932B2 (en) | 2000-04-19 | 2001-04-17 | 2-alkoxy-5-methoxypyrimidines or their tautomeric forms and methods for producing the same |
EP01931613A EP1274690A1 (de) | 2000-04-19 | 2001-04-17 | 2-alkoxy-5-methoxypyrimidine bzw. deren tautomere formen sowie verfahren zu deren herstellung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10019291A DE10019291C2 (de) | 2000-04-19 | 2000-04-19 | 2-Alkoxy-5-methoxypyrimidine bzw. deren tautomere Formen sowie Verfahren zu deren Herstellung |
DE10019291.2 | 2000-04-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001081320A1 true WO2001081320A1 (de) | 2001-11-01 |
Family
ID=7639240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/004345 WO2001081320A1 (de) | 2000-04-19 | 2001-04-17 | 2-alkoxy-5-methoxypyrimidine bzw. deren tautomere formen sowie verfahren zu deren herstellung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6620932B2 (de) |
EP (1) | EP1274690A1 (de) |
DE (1) | DE10019291C2 (de) |
WO (1) | WO2001081320A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7659540B2 (en) * | 2003-10-22 | 2010-02-09 | Merck Patent Gmbh | Materials for electroluminescence and the utilization thereof |
US9132119B2 (en) * | 2008-04-18 | 2015-09-15 | Medtronic, Inc. | Clonidine formulation in a polyorthoester carrier |
CN114539103B (zh) * | 2022-03-21 | 2023-04-07 | 佳木斯黑龙农药有限公司 | 2-二氟乙氧基-6-三氟甲基苯磺酰氯的合成方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4029648A1 (de) * | 1990-09-19 | 1992-03-26 | Hoechst Ag | 4-anilino-pyrimidine, verfahren zu ihrer herstellung, sie enthaltende mittel und ihre verwendung als fungizide |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2348213A1 (fr) * | 1976-04-16 | 1977-11-10 | Bellon Labor Sa Roger | Procede pour la preparation de l'ethoxycarbonyl-6 ethyl-8 methoxy-2 oxo-5 dihydro-5,8 pyrido(2,3-d) pyrimidine |
DE3441369A1 (de) * | 1984-11-13 | 1986-05-22 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung von hydroxymethylen-alkoxyessigsaeureestern |
AU6849701A (en) * | 2000-06-16 | 2002-01-02 | Dow Agrosciences Llc | Process for the preparation of 2-amino-5,8-dimethoxy(1,2,4)triazolo(1,5-c)pyrimidine |
-
2000
- 2000-04-19 DE DE10019291A patent/DE10019291C2/de not_active Expired - Fee Related
-
2001
- 2001-04-17 US US10/203,917 patent/US6620932B2/en not_active Expired - Fee Related
- 2001-04-17 WO PCT/EP2001/004345 patent/WO2001081320A1/de not_active Application Discontinuation
- 2001-04-17 EP EP01931613A patent/EP1274690A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4029648A1 (de) * | 1990-09-19 | 1992-03-26 | Hoechst Ag | 4-anilino-pyrimidine, verfahren zu ihrer herstellung, sie enthaltende mittel und ihre verwendung als fungizide |
Also Published As
Publication number | Publication date |
---|---|
EP1274690A1 (de) | 2003-01-15 |
US20030022908A1 (en) | 2003-01-30 |
DE10019291A1 (de) | 2001-10-31 |
US6620932B2 (en) | 2003-09-16 |
DE10019291C2 (de) | 2002-04-04 |
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