CN105949118A - 一种2-芳基喹啉衍生物的制备方法 - Google Patents
一种2-芳基喹啉衍生物的制备方法 Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229940027991 antiseptic and disinfectant quinoline derivative Drugs 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- -1 substituted aryl formic acids Chemical class 0.000 claims abstract description 19
- 239000007800 oxidant agent Substances 0.000 claims abstract description 12
- 230000001590 oxidative effect Effects 0.000 claims abstract description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 125000002943 quinolinyl group Chemical class N1=C(C=CC2=CC=CC=C12)* 0.000 claims abstract description 8
- 235000019253 formic acid Nutrition 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- WROMPOXWARCANT-UHFFFAOYSA-N tfa trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F.OC(=O)C(F)(F)F WROMPOXWARCANT-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 3
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 20
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 10
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 9
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(I) nitrate Inorganic materials [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 7
- 229940111121 antirheumatic drug quinolines Drugs 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 238000001953 recrystallisation Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 3
- 229910002567 K2S2O8 Inorganic materials 0.000 claims 2
- 239000002671 adjuvant Substances 0.000 claims 2
- 229910052736 halogen Inorganic materials 0.000 claims 2
- 150000002367 halogens Chemical class 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- SMWDFEZZVXVKRB-UHFFFAOYSA-N anhydrous quinoline Natural products N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 abstract description 15
- 101710134784 Agnoprotein Proteins 0.000 abstract description 9
- 239000012752 auxiliary agent Substances 0.000 abstract description 9
- 238000003786 synthesis reaction Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 3
- 230000035484 reaction time Effects 0.000 abstract description 3
- 238000010189 synthetic method Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 45
- 239000000243 solution Substances 0.000 description 10
- MUDSDYNRBDKLGK-UHFFFAOYSA-N 4-methylquinoline Chemical compound C1=CC=C2C(C)=CC=NC2=C1 MUDSDYNRBDKLGK-UHFFFAOYSA-N 0.000 description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 150000003248 quinolines Chemical class 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 7
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 6
- 238000004440 column chromatography Methods 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 6
- 238000006254 arylation reaction Methods 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 5
- 238000004896 high resolution mass spectrometry Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 239000005711 Benzoic acid Substances 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 235000010233 benzoic acid Nutrition 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 230000004071 biological effect Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000003480 eluent Substances 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- ZEYHEAKUIGZSGI-UHFFFAOYSA-N 4-methoxybenzoic acid Chemical compound COC1=CC=C(C(O)=O)C=C1 ZEYHEAKUIGZSGI-UHFFFAOYSA-N 0.000 description 2
- LPDYVLMKILCHDE-UHFFFAOYSA-N 4-methyl-2-phenylquinoline Chemical class N=1C2=CC=CC=C2C(C)=CC=1C1=CC=CC=C1 LPDYVLMKILCHDE-UHFFFAOYSA-N 0.000 description 2
- RFNYVZFDHXXQBP-UHFFFAOYSA-N 4-methylquinoline;2,2,2-trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F.C1=CC=C2C(C)=CC=NC2=C1 RFNYVZFDHXXQBP-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 2
- 239000007810 chemical reaction solvent Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005580 one pot reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- SEVBQRQACXXUJG-UHFFFAOYSA-N 2-(4-bromophenyl)quinoline Chemical class C1=CC(Br)=CC=C1C1=CC=C(C=CC=C2)C2=N1 SEVBQRQACXXUJG-UHFFFAOYSA-N 0.000 description 1
- RIQFGXSMEPCXCI-UHFFFAOYSA-N 2-(4-fluorophenyl)-4-methylquinoline Chemical class N=1C2=CC=CC=C2C(C)=CC=1C1=CC=C(F)C=C1 RIQFGXSMEPCXCI-UHFFFAOYSA-N 0.000 description 1
- JBZVOJLQMOIBRS-UHFFFAOYSA-N 2-(4-methoxyphenyl)-4-methylquinoline Chemical class C1=CC(OC)=CC=C1C1=CC(C)=C(C=CC=C2)C2=N1 JBZVOJLQMOIBRS-UHFFFAOYSA-N 0.000 description 1
- TUXYZHVUPGXXQG-UHFFFAOYSA-N 4-bromobenzoic acid Chemical compound OC(=O)C1=CC=C(Br)C=C1 TUXYZHVUPGXXQG-UHFFFAOYSA-N 0.000 description 1
- BBYDXOIZLAWGSL-UHFFFAOYSA-N 4-fluorobenzoic acid Chemical compound OC(=O)C1=CC=C(F)C=C1 BBYDXOIZLAWGSL-UHFFFAOYSA-N 0.000 description 1
- DCXIOVPAISJRMN-UHFFFAOYSA-N 6-methoxy-2-phenylquinoline Chemical class C1=CC2=CC(OC)=CC=C2N=C1C1=CC=CC=C1 DCXIOVPAISJRMN-UHFFFAOYSA-N 0.000 description 1
- HFDLDPJYCIEXJP-UHFFFAOYSA-N 6-methoxyquinoline Chemical compound N1=CC=CC2=CC(OC)=CC=C21 HFDLDPJYCIEXJP-UHFFFAOYSA-N 0.000 description 1
- QGJPWQJZBMPMAT-UHFFFAOYSA-N 6-nitro-2-phenylquinoline Chemical class C1=CC2=CC([N+](=O)[O-])=CC=C2N=C1C1=CC=CC=C1 QGJPWQJZBMPMAT-UHFFFAOYSA-N 0.000 description 1
- SMHPLBXIVNQFBA-UHFFFAOYSA-N 6-nitroquinoline Chemical compound N1=CC=CC2=CC([N+](=O)[O-])=CC=C21 SMHPLBXIVNQFBA-UHFFFAOYSA-N 0.000 description 1
- 101100391174 Dictyostelium discoideum forC gene Proteins 0.000 description 1
- 239000007832 Na2SO4 Substances 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
- 230000003266 anti-allergic effect Effects 0.000 description 1
- 230000001093 anti-cancer Effects 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007337 electrophilic addition reaction Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001623 magnesium bromide Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007347 radical substitution reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/04—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to the ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/12—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/12—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D215/14—Radicals substituted by oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/18—Halogen atoms or nitro radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/20—Oxygen atoms
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
本发明公开了一种2‑芳基喹啉衍生物 (I) 的制备方法,属有机化学领域。该方法以取代喹啉衍生物和取代芳基甲酸为原料,在AgNO3催化下,K2S2O8为氧化剂,三氟乙酸(TFA)为辅助剂,在溶剂中反应温度为60‑100℃,反应时间为6‑10小时,合成3‑芳基喹啉衍生物。本发明与已有的合成方法相比,具有以下的优点:(1)使用廉价易得的取代喹啉与取代芳基甲酸为原料,一步合成2‑芳基喹啉,成本低廉,有良好的应用前景;(2)反应条件温和,在空气条件下进行反应,产率高、操作方便等,有利于工业化生产。该类衍生物在材料、化工、医药等领域具有潜在的应用,本发明为2‑芳基喹啉衍生物的合成提供了一条新的途径。
Description
技术领域
本发明涉及一种2-芳基喹啉衍生物的制备方法,属于有机合成领域。
背景技术
喹啉是一种重要的含氮杂环化合物,是天然产物和药物中重要的结构单元,具有显著的杀菌、抗过敏、抗抑郁、抗肿瘤和抗癌等生物活性。另外,喹啉的芳基化衍生物是许多药物的前体,由于其独特的物理性质和生物活性,在有机合成、功能材料和药理学中是有价值的分子构建模块,在许多药物分子中都含有这个重要的结构。因此,开展喹啉芳基化衍生物的合成是极具研究价值的。
(a)
(b)
2-芳基喹啉衍生物作为喹啉衍生物中重要一类,近年来,其合成方法与生物活性研究受到重视。目前,通过喹啉直接芳基化合成2-芳基喹啉衍生物主要通过二种方法:(1)利用过渡金属催化直接官能团化形成C-C键,如以取代喹啉与卤代芳烃(或芳基硼酸)为原料,在金属Rh,Pd,Mn或Fe等催化下,合成了系列的2-芳基喹啉衍生物(a路线)(J.Am.Chem.Soc.,2008,130,14926;J.Org.Chem.,2010,75,7863;J.Am.Chem.Soc.,2011,133,19090;Synthesis,2010,7,1166;J.Org.Chem.,2013,78,2639.);(2)通过金属芳基化试剂进行芳基化,如以芳基锌或芳基溴化镁等为芳基化试剂,分别与取代喹啉反应合成2-芳基喹啉衍生物(b路线)(J.Am.Chem.Soc.,2009,131,12070;Chem.Asian J.,2012,7,1357.J.Org.Chem.,2013,78,3243.)。虽然这些方法都能合成2-芳基喹啉衍生物,但是仍然存在一些问题:使用的芳基源底物或催化剂价格较为昂贵,反应条件比较苛刻,反应时间长,底物适用范围有限等。因此,急需发展一种高效简便,条件温和,收率高,成本低且符合绿色化学要求的合成方法制备2-芳基喹啉衍生物。
发明内容
基于上述研究背景,本发明的目的在于提供一种原料廉价、条件温和、收率高,通过一步反应得到2-芳基喹啉衍生物的合成新方法。
本发明的目的通过下述技术方案实现:
所述一类2-芳基喹啉衍生物,其结构用下述式(I)表示:
式中,R1代表如下基团:氢基、甲基、乙基、甲氧基或苯基等;R2代表如下基团:氢基、甲基、乙基、甲氧基、乙氧基、硝基、氨基、羟基、乙酰氨基、乙酰氧基或卤基等;R3代表如下基团:氢基、甲基、乙基、甲氧基、乙氧基、硝基、乙酰氨基、乙酰氧基或卤基等。
优选:R1代表如下基团:氢基、甲基、乙基、甲氧基等;R2代表如下基团:氢基、甲基、乙基、甲氧基等;R3代表如下基团:氢基、甲基、乙基、甲氧基、乙氧基。
上述2-芳基喹啉衍生物的制备方法,包括下述步骤:
将取代喹啉与取代芳香甲酸溶于溶剂中,AgNO3为催化剂,K2S2O8为氧化剂,三氟乙酸(TFA)为辅助剂,在一定温度下加热反应,反应结束后通过柱色谱分离,或进行重结晶分离得到2-芳基喹啉衍生物(I)。
所述的取代喹啉和取代芳香甲酸的摩尔比选1:1.2~2.0,优选1:2。
所述的催化剂AgNO3与取代喹啉的摩尔比选0.05~0.15:1,优选0.1:1。
所述的氧化剂K2S2O8与取代喹啉的摩尔比选1.0~3.0:1,优选3:1。
所述的辅助剂三氟乙酸(TFA)与取代喹啉的摩尔比选1:1。
所述的反应溶剂为二氧六环、1,2-二氯乙烷、四氢呋喃、乙腈、水中的一种或多种,优选乙腈为反应溶剂。
所述的反应温度为60-100℃,优选90℃,反应时间为6-10小时。
本发明的合成路线如下:
式中R1、R2和R3表述同上。
所述的分离、提纯过程是:(1)将反应液过滤除去不溶物,再向滤液中加入饱和的NaHCO3溶液中和至中性。用乙酸乙酯萃取三次,萃取液用饱和的食盐水洗涤二次。萃取液经过干燥、浓缩后通过柱色谱分离提纯,产率为70-80%;(2)将上述经饱和的NaHCO3溶液、饱和的食盐水洗涤后的萃取液倒入冰水中搅拌,析出固体,然后静置抽滤,将滤饼晾干后再用有机溶剂重结晶,产率为60-75%。
本发明所用试剂均市售可得。
本发明原理在于:Ag(I)在氧化剂K2S2O8作用下生成Ag(II),苯甲酸A在Ag(II)作用下生成苯基自由基B;4-甲基喹啉C与TFA作用下生成4-甲基喹啉三氟醋酸盐D;苯基自由基B在4-甲基喹啉三氟醋酸盐D的2位发生亲电加成反应得到自由基E,氮原子上的电子向苯环分散能形成稳定的中间体F;F在Ag(II)作用下,脱去一个质子,形成4-甲基-2-苯基喹啉三氟醋酸盐G;最后G脱去一分子TFA得到产物4-甲基-2-苯基喹啉衍生物H。该反应的原理是在AgNO3催化下的自由基取代反应。
本发明有益效果在于:本发明2-芳基喹啉衍生物的合成方法原料廉价易得,通过一步反应得到目标物,反应条件温和、操作简便、产率高,达70%以上。有利于工业化生产,为制备具有功能性作用的2-芳基喹啉衍生物提供了一条新的途径。
具体实施方式
下面通过实施例对本发明进行进一步的阐述,但并不意味着本发明的内容局限于实施例。
实施例1.R1=-CH3,R2=R3=-H时,2-苯基-4-甲基喹啉衍生物的制备
在50mL圆底烧瓶中加入4-甲基喹啉(0.5mmol,71.5mg)和苯甲酸(1.0mmol,122mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和5.0mL乙腈为溶剂,在90℃下回流反应8.0h;反应结束后,过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用15mL乙酸乙酯萃取二次,萃取液用饱和的食盐水洗涤二次;萃取液用无水Na2SO4干燥,减压浓缩后通过柱色谱(洗脱剂:乙酸乙酯/石油醚=1/15)分离提纯,得到黄色粘稠状液体0.083g,产率76.0%。
黄色粘稠状液体;1H NMR(400MHz,CDCl3)δ:8.24(d,JH-H=8.4Hz,1H),8.16(d,JH-H=7.2Hz,1H),7.75-7.71(m,2H),7.58-7.51(m,3H),7.46(t,JH-H=7.2Hz,1H),2.78(s,3H).13C NMR(100MHz,CDCl3)δ:157.0,148.1,144.8,139.8,130.2(CH),129.3(CH),129.2(CH),128.7(CH),127.5(CH),127.2,126.0(CH),123.6(CH),119.7(CH),19.0(CH3).IR(KBr)ν(cm-1):2925(CH3),1598,1552,1494(Ar-).MS(ESI)m/z:220.2[M+H]+(calcd for C16H14N+220.1).
实施例2.R1=-CH3,R2=-H,R3=-OCH3时,2-(4-甲氧基苯基)-4-甲基喹啉衍生物的制备
在50mL圆底烧瓶中加入4-甲基喹啉(0.5mmol,71.5mg)和4-甲氧基苯甲酸(1.0mmol,152mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和5.0mL水为溶剂,在100℃下回流反应10.0h;反应结束后,加入5.0mL乙酸乙酯,然后过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用15mL乙酸乙酯萃取二次,萃取液用饱和的食盐水洗涤二次;萃取液用无水Na2SO4干燥,减压浓缩后通过柱色谱(洗脱剂:乙酸乙酯/石油醚=1/15)分离提纯,得到黄色粘稠状液体0.097g,产率78.0%。
黄色粘稠状液体;1H NMR(400MHz,CDCl3)δ:8.18-8.12(m,3H),7.98(d,JH-H=8.3Hz,1H),7.72-7.68(m,2H),7.54-7.50(m,1H),7.04(d,JH-H=8.8Hz,2H),3.89(s,3H),2.76(s,3H).13C NMR(100MHz,CDCl3)δ:160.7,156.6,148.0,144.7,132.2,129.9(CH),129.3(CH),128.8(CH),127.0,125.7(CH),123.6(CH),119.3(CH),114.1(CH),55.4(CH3),19.0(CH3).IR(KBr)ν(cm-1):2924(CH3),1599,1504(Ar-).HR MS(ESI)m/z:250.1228[M+H]+(calcd for C17H16NO+250.1226).
实施例3.R1=-CH3,R2=-H,R3=-F时,2-(4-氟苯基)-4-甲基喹啉衍生物的制备
在50mL圆底烧瓶中加入4-甲基喹啉(0.5mmol,71.5mg)和4-氟苯甲酸(1.0mmol,140mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和3.0mL乙腈与3.0mL水为混合溶剂,在100℃下回流反应9.0h;反应结束后,加入5.0mL乙酸乙酯,然后过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用15mL乙酸乙酯萃取二次,萃取液用饱和的食盐水洗涤二次;萃取液用无水Na2SO4干燥,减压浓缩后通过柱色谱(洗脱剂:乙酸乙酯/石油醚=1/10)分离提纯,得到黄色粘稠状液体0.089g,产率75.0%。
淡黄色粘稠状液体;1H NMR(400MHz,CDCl3)δ:8.16-8.13(m,3H),7.99(d,JH-H=8.3Hz,1H),7.72(td,JH-H=8.2Hz,JH-H=1.2Hz,1H),7.67(s,1H),7.54(td,JH-H=8.0Hz,JH-H=0.9Hz,1H),7.19(t,JH-H=8.6Hz,2H),2.77(s,3H).13C NMR(100MHz,CDCl3)δ:164.9,162.5,155.9,148.0,145.0,130.1(CH),129.5(CH),129.3(d,JF-C=8.2Hz,CH),127.1,126.1(CH),123.6(CH),119.4(CH),115.7(d,JF-C=21.4Hz,CH),19.0(CH3).19F NMR(376MHz,CDCl3)δ:-112.6.IR(KBr)ν(cm-1):2924(CH3),1599,1550,1504(Ar-).HR MS(ESI)m/z:238.1025[M+H]+(calcd for C16H13FN+238.1027).
实施例4.R1=-H,R2=-OCH3,R3=-H时,2-苯基-6-甲氧基喹啉衍生物的制备
在50mL圆底烧瓶中加入6-甲氧基喹啉(0.5mmol,79.5mg)和苯甲酸(1.0mmol,122mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和5.0mL二氧六环为溶剂,在80℃下反应7.0h;反应结束后,然后过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用10mL乙酸乙酯萃取二次,将萃取液倒入20g的冰水混合物中,搅拌析出固体,然后静置抽滤,将滤饼晾干后再用乙酸乙酯和石油醚进行重结晶,得到黄色晶体0.076g,产率75.0%。
黄色晶体,熔点99-100℃;1H NMR(400MHz,CDCl3)δ:8.14-8.05(m,4H),7.83(d,JH-H=8.6Hz,1H),7.51(t,JH-H=7.2Hz,2H),7.45-7.36(m,2H),7.09(d,JH-H=2.8Hz,1H),3.95(s,3H).13C NMR(100MHz,CDCl3)δ:157.7,155.1,144.4,139.8,135.5,131.1,128.9,128.7,128.1,127.2,122.3,119.2,105.0,55.5(CH3).IR(KBr)ν(cm-1):2921(CH3),1619,1596,1492(Ar-).HR MS(ESI)m/z:236.1072[M+H]+(calcd for C16H14NO+236.1070).
实施例5.R1=-H,R2=-NO2,R3=-H时,2-苯基-6-硝基喹啉衍生物的制备
在50mL圆底烧瓶中加入6-硝基喹啉(0.5mmol,87mg)和苯甲酸(1.0mmol,122mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和5.0mL四氢呋喃为溶剂,在80℃下反应6.0h;反应结束后,然后过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用10mL乙酸乙酯萃取二次,将萃取液倒入20g的冰水混合物中,搅拌析出固体,然后静置抽滤,将滤饼晾干后再用乙酸乙酯和石油醚进行重结晶,得到淡黄色晶体0.079g,产率73.0%。
淡黄色晶体,熔点134-135℃;1H NMR(400MHz,CDCl3)δ:8.80(d,JH-H=2.4Hz,1H),8.49(dd,JH-H=9.2Hz,JH-H=2.5Hz,1H),8.40(d,JH-H=8.7Hz,1H),8.29(d,JH-H=9.2Hz,1H),8.22(d,JH-H=8.7Hz,2H),8.05(d,JH-H=8.7Hz,1H),7.59-7.53(m,3H).13C NMR(100MHz,CDCl3)δ:160.6,150.3,145.2,138.5,138.3,131.3,130.5,129.0,127.8,125.8,124.3,123.2,120.6.HR MS(ESI)m/z:251.0817[M+H]+(calcd for C15H11N2O2 +251.0815).
实施例6.R1=R2=-H,R3=-Br时,2-(4-溴苯基)喹啉衍生物的制备
在50mL圆底烧瓶中加入喹啉(0.5mmol,64.5mg)和4-溴苯甲酸(1.0mmol,200mg),再加入催化剂AgNO3(0.05mmol,8.5mg),氧化剂K2S2O8(1.5mmol,405mg),三氟乙酸(0.5mmol,72mg)为辅助剂和5.0mL 1,2-二氯乙烷为溶剂,在90℃下回流反应8.0h;反应结束后,然后过滤除去不溶物,向滤液中加入饱和的NaHCO3溶液中和至中性,用15mL乙酸乙酯萃取二次,萃取液用饱和的食盐水洗涤二次;萃取液用无水Na2SO4干燥,减压浓缩后通过柱色谱(洗脱剂:乙酸乙酯/石油醚=1/10)分离提纯,得到黄色粘稠状液体0.105g,产率74.0%。
黄色粘稠状液体,1H NMR(400MHz,CDCl3)δ:8.21(d,JH-H=8.6Hz,1H),8.16(d,JH-H=8.6Hz,1H),8.05(d,JH-H=8.6Hz,2H),7.82(d,JH-H=8.6Hz,2H),7.73(td,JH-H=6.9Hz,JH-H=1.4Hz,1H),7.65(d,JH-H=8.6Hz,2H),7.53(td,JH-H=6.9Hz,JH-H=1.2Hz,1H).13C NMR(100MHz,CDCl3)δ:156.0,148.2,138.4,137.0(CH),131.9(CH),129.8(CH),129.6(CH),129.1(CH),127.5(CH),127.3,126.6(CH),123.9,118.5(CH).HR MS(ESI)m/z:284.0071[M+H]+(calcd forC15H11BrN+284.0069).。
Claims (4)
1. 一种制备2-芳基喹啉衍生物的方法,其特征在于,通过如下步骤实现:在AgNO3催化下,K2S2O8为氧化剂,三氟乙酸(TFA)为辅助剂,取代喹啉与取代芳香甲酸在溶剂中加热反应,反应结束后通过柱色谱分离,或进行重结晶分离得到2-芳基喹啉衍生物(I);反应式为:
式中,R1代表如下基团:氢基、甲基、乙基、甲氧基或苯基;R2代表如下基团:氢基、甲基、乙基、甲氧基、乙氧基、硝基、氨基、羟基、乙酰氨基、乙酰氧基或卤基;R3代表如下基团:氢基、甲基、乙基、甲氧基、乙氧基、硝基、乙酰氨基、乙酰氧基或卤基。
2.根据权利要求1所述的2-芳基喹啉衍生物的制备方法,其特征在于所述的溶剂为二氧六环、1,2-二氯乙烷、四氢呋喃、乙腈、水中的一种或多种。
3.根据权利要求1所述的2-芳基喹啉衍生物的制备方法,其特征在于,所述的取代喹啉与取代芳基甲酸的摩尔比为1 : 1.2~2.0;催化剂AgNO3的用量为取代喹啉的0.05-0.15摩尔当量,氧化剂K2S2O8的用量为取代喹啉的1.0-3.0摩尔当量,辅助剂三氟乙酸(TFA)的用量为取代喹啉的1.0摩尔当量。
4.根据权利要求1所述的2-芳基喹啉衍生物的制备方法,其特征在于,反应温度为60-100℃,反应时间为6-10小时。
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