CN108456140B - 一种制备氟比洛芬杂质m的方法 - Google Patents
一种制备氟比洛芬杂质m的方法 Download PDFInfo
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- CN108456140B CN108456140B CN201810183301.0A CN201810183301A CN108456140B CN 108456140 B CN108456140 B CN 108456140B CN 201810183301 A CN201810183301 A CN 201810183301A CN 108456140 B CN108456140 B CN 108456140B
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- 239000012535 impurity Substances 0.000 title claims abstract description 48
- SYTBZMRGLBWNTM-UHFFFAOYSA-N flurbiprofen Chemical compound FC1=CC(C(C(O)=O)C)=CC=C1C1=CC=CC=C1 SYTBZMRGLBWNTM-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229960002390 flurbiprofen Drugs 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000006467 substitution reaction Methods 0.000 claims abstract description 20
- UPQZOUHVTJNGFK-UHFFFAOYSA-N diethyl 2-methylpropanedioate Chemical compound CCOC(=O)C(C)C(=O)OCC UPQZOUHVTJNGFK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- RUBQQRMAWLSCCJ-UHFFFAOYSA-N 1,2-difluoro-4-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(F)C(F)=C1 RUBQQRMAWLSCCJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000006193 diazotization reaction Methods 0.000 claims abstract description 7
- 238000006722 reduction reaction Methods 0.000 claims abstract description 7
- 238000006114 decarboxylation reaction Methods 0.000 claims abstract description 6
- 230000007062 hydrolysis Effects 0.000 claims abstract description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 6
- 239000007858 starting material Substances 0.000 claims abstract description 4
- -1 2-fluoro-4-nitrophenyl Chemical group 0.000 claims description 45
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 26
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 22
- 239000012074 organic phase Substances 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 15
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 235000019260 propionic acid Nutrition 0.000 claims description 11
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical compound OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 claims description 10
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 8
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 7
- 235000011181 potassium carbonates Nutrition 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 6
- CGKKDGMMKSOGLM-UHFFFAOYSA-N 1-chloroethyl acetate Chemical compound CC(Cl)OC(C)=O CGKKDGMMKSOGLM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 5
- 235000010288 sodium nitrite Nutrition 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000911 decarboxylating effect Effects 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 230000003301 hydrolyzing effect Effects 0.000 claims description 4
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 4
- PAGZTSLSNQZYEV-UHFFFAOYSA-L 2,2-dimethylpropanoate;palladium(2+) Chemical compound [Pd+2].CC(C)(C)C([O-])=O.CC(C)(C)C([O-])=O PAGZTSLSNQZYEV-UHFFFAOYSA-L 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- PYVFGADNEKZFDO-UHFFFAOYSA-N diethyl 2-(2-fluoro-4-nitrophenyl)-2-methylpropanedioate Chemical compound CCOC(=O)C(C)(C(=O)OCC)C1=CC=C([N+]([O-])=O)C=C1F PYVFGADNEKZFDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- PBDBXAQKXCXZCJ-UHFFFAOYSA-L palladium(2+);2,2,2-trifluoroacetate Chemical compound [Pd+2].[O-]C(=O)C(F)(F)F.[O-]C(=O)C(F)(F)F PBDBXAQKXCXZCJ-UHFFFAOYSA-L 0.000 claims description 3
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 0.000 claims description 3
- MXQOYLRVSVOCQT-UHFFFAOYSA-N palladium;tritert-butylphosphane Chemical compound [Pd].CC(C)(C)P(C(C)(C)C)C(C)(C)C.CC(C)(C)P(C(C)(C)C)C(C)(C)C MXQOYLRVSVOCQT-UHFFFAOYSA-N 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000012065 filter cake Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- UKVIEHSSVKSQBA-UHFFFAOYSA-N methane;palladium Chemical compound C.[Pd] UKVIEHSSVKSQBA-UHFFFAOYSA-N 0.000 claims description 2
- 239000011736 potassium bicarbonate Substances 0.000 claims description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims 2
- 238000000746 purification Methods 0.000 claims 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims 1
- 235000017557 sodium bicarbonate Nutrition 0.000 claims 1
- 239000013558 reference substance Substances 0.000 abstract description 5
- 238000010812 external standard method Methods 0.000 abstract description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229960001138 acetylsalicylic acid Drugs 0.000 description 3
- 230000003110 anti-inflammatory effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 208000033962 Fontaine progeroid syndrome Diseases 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229940035676 analgesics Drugs 0.000 description 2
- 239000000730 antalgic agent Substances 0.000 description 2
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- 229940079593 drug Drugs 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
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- 239000012312 sodium hydride Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
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- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
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- 229940124599 anti-inflammatory drug Drugs 0.000 description 1
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- 229910052786 argon Inorganic materials 0.000 description 1
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- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
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- 201000008482 osteoarthritis Diseases 0.000 description 1
- 229930015704 phenylpropanoid Natural products 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/10—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/12—Preparation of nitro compounds by reactions not involving the formation of nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C227/00—Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C227/04—Formation of amino groups in compounds containing carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
- C07C67/307—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of halogen; by substitution of halogen atoms by other halogen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
- C07C67/333—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisation; by change of size of the carbon skeleton
- C07C67/343—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
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Abstract
本发明公开了一种制备氟比洛芬杂质M的方法,以3,4‑二氟硝基苯为起始原料,与甲基丙二酸二乙酯发生取代反应,然后经还原反应、重氮化反应、偶联反应、水解脱羧反应、取代反应后得到高纯度的氟比洛芬杂质M。本发明的制备氟比洛芬杂质M的方法能够快速、简便、高效地得到杂质对照品,对采用外标法(即杂质对照品法)严格控制氟比洛芬的质量等方面做出贡献。
Description
技术领域
本发明涉及医药制备技术领域,具体是一种制备氟比洛芬杂质M的方法。
背景技术
氟比洛芬,化学名为2-(2-氟-4-联苯)丙酸,CAS:5104-49-4,具有下式所示的化学结构:
氟比洛芬(Flurbiprofen)是英国布兹公司开发的一种非甾体消炎镇痛药。该药于1976年在英国上市,目前已列入英国、美国等多国药典,该药是一种强效苯丙酸类解热抗炎镇痛药,是优秀的非甾体消炎镇痛药之一,能抑制***素制备环氧合酶而起止痛、抗炎及解热作用。其消炎和镇痛作用分别为阿司匹林(亦称乙酰水杨酸)的250倍及50倍。主要用于风湿性关节炎、类风湿性关节炎、强直性脊椎炎、变性关节炎。也可预防手术摘除晶状体后发生无晶状体囊样斑点状水肿,抑制手术中瞳孔收缩,白内障及小梁成形氩气激光手术后眼睛炎症的治疗。还适用于其他一些原因如外伤、扭伤、手术等引起的疼痛。
氟比洛芬的质量标准在英国药典、欧洲药典和美国药典中已有收载,其中明确指出可能含有的B、C、D、E、F、G、H、I、J、K、L、M,此12杂质的结构如下:
上述12种杂质采用混合对照的方式进行***适应性试验以控制杂质,现有文献中未见有关于制备氟比洛芬杂质M的高效合成方法。
《化学药物杂质研究的技术指导原则》([H]GPH3-1,第6~7页)指出:有机杂质的检测一般多采用HPLC法。如采用HPLC法,须采用峰面积法,具体定量方法采用外标法(杂质对照品法),外标法定量比较准确。
氟比洛芬杂质M是氟比洛芬质量标准中所关注的杂质之一,其对于氟比洛芬杂质的相关研究意义非常重大。因此,提供一种简便高效制备高纯度的氟比洛芬杂质M的方法,对于氟比洛芬杂质的相关研究意义重大。它可以用于氟比洛芬生产中的杂质定性和定量的分析,从而可以提高氟比洛芬的质量标准,为人民群众安全用药提供重要的指导意义。
发明内容
本发明的目的在于提供一种制备氟比洛芬杂质M的方法,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种制备氟比洛芬杂质M的方法,以3,4-二氟硝基苯为起始原料,与甲基丙二酸二乙酯发生取代反应,然后经还原反应、重氮化反应、偶联反应、水解脱羧反应、取代反应后得到高纯度的氟比洛芬杂质M;总反应流程式为:
作为本发明进一步的方案:所述的氟比洛芬杂质M由1-氯乙基乙酸酯与2-(2-氟-4-苯基苯基)丙酸在碱性条件下取代反应得到的,反应方程式为:
作为本发明进一步的方案:所述的碱为碳酸钾、碳酸钠、叔丁醇钾或三乙胺。
作为本发明进一步的方案:所述的2-(2-氟-4-苯基苯基)丙酸由(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯在碱性条件下水解脱羧得到的,反应方程式为:
作为本发明进一步的方案:所述的(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯由2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯与苯硼酸在碱性条件下,加入催化剂偶联得到的,反应方程式为:
作为本发明进一步的方案:所述的催化剂为四(三苯基膦)钯、二(三叔丁基膦)钯、三苯基膦、醋酸钯、新戊酸钯或三氟乙酸钯。
作为本发明进一步的方案:所述的2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯在酸性条件下与亚硝酸钠、碘化钾重氮化反应得到的,反应方程式为:
作为本发明进一步的方案:所述的2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯还原得到的,反应方程式为:
作为本发明进一步的方案:所述的2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯由3,4-二氟硝基苯与甲基丙二酸二乙酯在碱性条件下发生取代反应得到的,反应方程式为:
作为本发明进一步的方案:所述的碱为叔丁醇钾、叔丁醇钠、甲醇钠或氢化钠。
与现有技术相比,本发明的有益效果是:
本发明的制备氟比洛芬杂质M的方法能够快速、简便、高效地得到杂质对照品,对采用外标法(即杂质对照品法)严格控制氟比洛芬的质量等方面做出贡献。
附图说明
图1是本发明的氟比洛芬杂质M的气相图。
图2是本发明的氟比洛芬杂质M的质谱图。
图3是本发明的氟比洛芬杂质M的核磁图(溶剂为CDCl3)。
具体实施方式
下面结合具体实施方式对本专利的技术方案作进一步详细地说明。
一种制备氟比洛芬杂质M的方法,以3,4-二氟硝基苯为起始原料,与甲基丙二酸二乙酯发生取代反应,然后经还原反应、重氮化反应、偶联反应、水解脱羧反应、取代反应后得到高纯度的氟比洛芬杂质M;总反应流程式为:
制备氟比洛芬杂质M的方法,具体步骤如下:
第一步:取代反应,合成化合物5,即2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯。2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯由3,4-二氟硝基苯与甲基丙二酸二乙酯在碱性条件下发生取代反应得到的。步骤为:在250m单口瓶加入12.04g甲基丙二酸二乙酯,100ml无水THF,搅拌,在0~5℃加入8.91g叔丁醇钾(还可替换为叔丁醇钠、甲醇钠或氢化钠等),加完搅拌30分钟,然后缓慢加入3,4-二氟硝基苯,20~25℃反应12h,反应完浓干,加入100ml饱和氯化铵溶液,150ml乙酸乙酯萃取,有机相用100ml饱和氯化钠溶液洗,浓干得18.1g黄色油状2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯,收率92%。
第二步:还原反应,合成化合物4,即2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯。2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯还原得到的。步骤为:在100ml单口瓶加入7.0g 2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯,45ml乙醇(溶剂还可替换为甲醇、苯、甲苯、乙腈或1,2-二氯乙烷等),搅拌,15~20℃下加入700mg钯碳(还原剂还可替换为铁粉、锌粉、硫氢化钠、硫代硫酸钠或水合肼等),20~25℃通入氢气反应14h,反应完过滤,滤饼用30ml的乙酸乙酯洗,滤液浓缩干,得到5.7g黄色油状2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯,收率90%。
第三步:重氮化反应,合成化合物3,即2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯。2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯在酸性条件下与亚硝酸钠、碘化钾重氮化反应得到的。步骤为:250ml单口瓶加入6.428g 2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯,43ml水和40ml甲苯,搅拌,0~5℃滴加入9ml浓盐酸,搅拌30min,再滴加1.9g亚硝酸钠水溶液,反应30min,加入7.62g碘化钾,20~25℃反应4h,反应完加入40ml水和60ml乙酸乙酯萃取,有机相用30ml饱和氯化钠溶液洗,有机相无水硫酸钠干燥,浓干有机相得6.8g棕红色油状2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯,收率94%。
第四步:偶联反应,合成化合物2,即(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯。(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯由2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯与苯硼酸在碱性条件下,加入催化剂偶联得到的。步骤为:250ml单口瓶中加入6.4g2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯,46ml四氢呋喃和40ml水搅拌,20~25℃加6.8g入碳酸钾(还可替换为碳酸钠、碳酸氢钠或碳酸氢钾等),2.2g苯硼酸,640mg四(三苯基膦)钯(催化剂还可替换为二(三叔丁基膦)钯、三苯基膦、醋酸钯、新戊酸钯或三氟乙酸钯等),回流反应14h。反应完过滤,滤液乙酸乙酯萃取,有机相饱和氯化钠溶液洗,无水硫酸钠干燥有机相,浓干得5.1g浅黄色油状(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯,收率90.5%。
第五步:水解脱羧反应,合成化合物1,即2-(2-氟-4-苯基苯基)丙酸。2-(2-氟-4-苯基苯基)丙酸由(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯在碱性条件下水解脱羧得到的。步骤为:100ml单口瓶中加入4.5g(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯,25ml乙醇,25ml水,搅拌,加入2.6g氢氧化钠(还可替换为氢氧化锂或氢氧化钾等),80℃回流10h。浓干乙醇,加入50ml水,稀盐酸调pH=1~3,乙酸乙酯萃取分层,有机相用40ml饱和氯化钠溶液洗,无水硫酸钠干燥有机相,浓干纯化得到2.7g白色至类白色固体粉末2-(2-氟-4-苯基苯基)丙酸,收率85%。
第六步:取代反应,合成氟比洛芬杂质M。氟比洛芬杂质M由1-氯乙基乙酸酯与2-(2-氟-4-苯基苯基)丙酸在碱性条件下发生取代反应得到的。步骤为:在50ml单口瓶中加入0.6g反应底物,10ml二氯甲烷,搅拌降温,室温加入750mg碳酸钾(还可替换为碳酸钠、叔丁醇钾或三乙胺等),反应10min,缓慢滴加451mg 1-氯乙基乙酸酯,滴加时间10min。10min后升至30-45℃反应14h,反应完浓干,0℃加入饱和氯化铵调pH=7,20ml乙酸乙酯萃取,分出有机相,有机相用10ml饱和氯化钠溶液洗,浓干得690mg无色至浅黄色油状氟比洛芬杂质M,收率85%,GC≥98.0%。
图1-2是本发明的氟比洛芬杂质M的气相图及其质谱图,检测参数为:
进样名称:FBLFM121901-1
进样体积:1.00
方法文件:E:\GCMS-DATA\2017\10\30\SH-Rxi-5Sil MS-40-140-310.qgm
数据文件:E:\GCMS-DATA\2017\12\FBLFM121901-1.qgd
检测结果为:
峰表TIC
谱库
《目标组分》
行号#:1 保留时间:17.720(扫描数#:3025) 质量峰:420
原始模式:单个17.720(3025) 基峰:199.05(7937500)
背景模式:无 组 1-事件 1 Scan
上面对本专利的较佳实施方式作了详细说明,但是本专利并不限于上述实施方式,在本领域的普通技术人员所具备的知识范围内,还可以在不脱离本专利宗旨的前提下作出各种变化。
Claims (6)
1.一种制备氟比洛芬杂质M的方法,其特征在于,以3,4-二氟硝基苯为起始原料,与甲基丙二酸二乙酯发生取代反应,然后经还原反应、重氮化反应、偶联反应、水解脱羧反应、取代反应后得到高纯度的氟比洛芬杂质M;总反应流程式为:
具体步骤如下:
第一步:取代反应,合成2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯;2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯由3,4-二氟硝基苯与甲基丙二酸二乙酯在碱性条件下发生取代反应得到的;步骤为:在瓶中加入12.04g甲基丙二酸二乙酯,100ml无水THF,搅拌,在0~5℃加入8.91g叔丁醇钾,加完搅拌30分钟,然后缓慢加入3,4-二氟硝基苯,20~25℃反应12h,反应完浓干,加入100ml饱和氯化铵溶液,150ml乙酸乙酯萃取,有机相用100ml饱和氯化钠溶液洗,浓干得黄色油状2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯;
第二步:还原反应,合成2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯;2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯还原得到的;步骤为:在瓶中加入7.0g 2-(2-氟-4-硝基苯基)-2-甲基丙二酸二乙酯,45ml乙醇,搅拌,15~20℃下加入700mg钯碳,20~25℃通入氢气反应14h,反应完过滤,滤饼用30ml的乙酸乙酯洗,滤液浓缩干,得到黄色油状2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯;
第三步:重氮化反应,合成2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯;2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯由2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯在酸性条件下与亚硝酸钠、碘化钾重氮化反应得到的;步骤为:瓶中加入6.428g 2-(2-氟-4-氨基苯基)-2-甲基丙二酸二乙酯,43ml水和40ml甲苯,搅拌,0~5℃滴加入9ml浓盐酸,搅拌30min,再滴加1.9g亚硝酸钠水溶液,反应30min,加入7.62g碘化钾,20~25℃反应4h,反应完加入40ml水和60ml乙酸乙酯萃取,有机相用30ml饱和氯化钠溶液洗,有机相无水硫酸钠干燥,浓干有机相得棕红色油状2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯;
第四步:偶联反应,合成(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯;(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯由2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯与苯硼酸在碱性条件下,加入催化剂偶联得到的;步骤为:瓶中加入6.4g 2-(2-氟-4-碘基苯基)-2-甲基丙二酸二乙酯,46ml四氢呋喃和40ml水搅拌,20~25℃加6.8g入碳酸钾,2.2g苯硼酸,640mg四(三苯基膦)钯,回流反应14h;反应完过滤,滤液乙酸乙酯萃取,有机相饱和氯化钠溶液洗,无水硫酸钠干燥有机相,浓干得浅黄色油状(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯;
第五步:水解脱羧反应,合成2-(2-氟-4-苯基苯基)丙酸;2-(2-氟-4-苯基苯基)丙酸由(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯在碱性条件下水解脱羧得到的;步骤为:瓶中加入4.5g(3-氟[1,1'-联苯]-4-基)甲基丙二酸二乙酯,25ml乙醇,25ml水,搅拌,加入2.6g氢氧化钠,80℃回流10h;浓干乙醇,加入50ml水,稀盐酸调pH=1~3,乙酸乙酯萃取分层,有机相用40ml饱和氯化钠溶液洗,无水硫酸钠干燥有机相,浓干纯化得到白色至类白色固体粉末2-(2-氟-4-苯基苯基)丙酸;
第六步:取代反应,合成氟比洛芬杂质M;氟比洛芬杂质M由1-氯乙基乙酸酯与2-(2-氟-4-苯基苯基)丙酸在碱性条件下发生取代反应得到的;步骤为:在瓶中加入0.6g反应底物,10ml二氯甲烷,搅拌降温,室温加入750mg碳酸钾,反应10min,缓慢滴加451mg 1-氯乙基乙酸酯,滴加时间10min;10min后升至30-45℃反应14h,反应完浓干,0℃加入饱和氯化铵调pH=7,20ml乙酸乙酯萃取,分出有机相,有机相用10ml饱和氯化钠溶液洗,浓干得无色至浅黄色油状氟比洛芬杂质M。
2.根据权利要求1所述的制备氟比洛芬杂质M的方法,其特征在于,所述的第一步取代反应中,叔丁醇钾替换为叔丁醇钠。
3.根据权利要求1所述的制备氟比洛芬杂质M的方法,其特征在于,所述的第二步还原反应中,乙醇替换为甲醇。
4.根据权利要求1所述的制备氟比洛芬杂质M的方法,其特征在于,所述的第四步偶联反应中,碳酸钾替换为碳酸钠、碳酸氢钠或碳酸氢钾;四(三苯基膦)钯替换为二(三叔丁基膦)钯、醋酸钯、新戊酸钯或三氟乙酸钯。
5.根据权利要求1所述的制备氟比洛芬杂质M的方法,其特征在于,所述的第五步水解脱羧反应中,氢氧化钠替换为氢氧化锂或氢氧化钾。
6.根据权利要求1所述的制备氟比洛芬杂质M的方法,其特征在于,所述的第六步取代反应中,碳酸钾替换为碳酸钠。
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