CN115197155A - 一种2-喹喔啉磺酸酯类化合物及其合成方法 - Google Patents
一种2-喹喔啉磺酸酯类化合物及其合成方法 Download PDFInfo
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- -1 2-quinoxaline sulfonate compound Chemical class 0.000 title claims abstract description 34
- 238000001308 synthesis method Methods 0.000 title claims abstract description 7
- 125000003118 aryl group Chemical group 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000011734 sodium Substances 0.000 claims abstract description 10
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 8
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 115
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 30
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 28
- 239000012043 crude product Substances 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical group [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 claims description 15
- 239000003208 petroleum Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052736 halogen Inorganic materials 0.000 claims description 10
- 150000002367 halogens Chemical class 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 8
- 238000010898 silica gel chromatography Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 6
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000003115 supporting electrolyte Substances 0.000 claims description 3
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 claims description 2
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 claims description 2
- 125000000175 2-thienyl group Chemical group S1C([*])=C([H])C([H])=C1[H] 0.000 claims description 2
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 claims description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052794 bromium Inorganic materials 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 239000003480 eluent Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 125000000623 heterocyclic group Chemical group 0.000 claims description 2
- 125000001624 naphthyl group Chemical group 0.000 claims description 2
- BSCHIACBONPEOB-UHFFFAOYSA-N oxolane;hydrate Chemical compound O.C1CCOC1 BSCHIACBONPEOB-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 28
- FFRYUAVNPBUEIC-UHFFFAOYSA-N quinoxalin-2-ol Chemical compound C1=CC=CC2=NC(O)=CN=C21 FFRYUAVNPBUEIC-UHFFFAOYSA-N 0.000 abstract description 11
- 150000003252 quinoxalines Chemical class 0.000 abstract description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 abstract description 4
- 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 abstract description 3
- 125000000304 alkynyl group Chemical group 0.000 abstract description 3
- 238000006880 cross-coupling reaction Methods 0.000 abstract description 3
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000004071 biological effect Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 26
- GQLNDUDWXKHBND-UHFFFAOYSA-N quinoxaline-2-sulfonic acid Chemical compound C1=CC=CC2=NC(S(=O)(=O)O)=CN=C21 GQLNDUDWXKHBND-UHFFFAOYSA-N 0.000 description 26
- 238000003786 synthesis reaction Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 239000012046 mixed solvent Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 12
- 238000001035 drying Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000003818 flash chromatography Methods 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 7
- 229910002027 silica gel Inorganic materials 0.000 description 7
- KVCGISUBCHHTDD-UHFFFAOYSA-M sodium;4-methylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1 KVCGISUBCHHTDD-UHFFFAOYSA-M 0.000 description 7
- 239000000047 product Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- BBXFVDGUPMYLQO-UHFFFAOYSA-N 2H-pyrrol-2-id-3-one Chemical compound N1=[C-]C(C=C1)=O BBXFVDGUPMYLQO-UHFFFAOYSA-N 0.000 description 1
- LSAZSONOFASSJF-UHFFFAOYSA-N 5-methyl-1h-quinoxalin-2-one Chemical compound N1C(=O)C=NC2=C1C=CC=C2C LSAZSONOFASSJF-UHFFFAOYSA-N 0.000 description 1
- SJAZZQLTKBYDHN-UHFFFAOYSA-N 6-chloro-1h-quinoxalin-2-one Chemical compound C1=C(Cl)C=CC2=NC(O)=CN=C21 SJAZZQLTKBYDHN-UHFFFAOYSA-N 0.000 description 1
- SBPUELVBFXEMHH-UHFFFAOYSA-N 6-fluoro-1h-quinoxalin-2-one Chemical compound N1C(=O)C=NC2=CC(F)=CC=C21 SBPUELVBFXEMHH-UHFFFAOYSA-N 0.000 description 1
- SYEUUDPGKMMKRU-UHFFFAOYSA-N 6-methoxy-1h-quinoxalin-2-one Chemical compound N1C(=O)C=NC2=CC(OC)=CC=C21 SYEUUDPGKMMKRU-UHFFFAOYSA-N 0.000 description 1
- PXVQWJPOMIRXQL-UHFFFAOYSA-N 7-bromo-1h-quinoxalin-2-one Chemical compound C1=CC(Br)=CC2=NC(O)=CN=C21 PXVQWJPOMIRXQL-UHFFFAOYSA-N 0.000 description 1
- NZKPWVAKHWJDAX-UHFFFAOYSA-N 8-methyl-1h-quinoxalin-2-one Chemical compound C1=C(O)N=C2C(C)=CC=CC2=N1 NZKPWVAKHWJDAX-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010651 palladium-catalyzed cross coupling reaction Methods 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- HWDIRMKMGCHDBF-UHFFFAOYSA-M sodium;2-bromobenzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1Br HWDIRMKMGCHDBF-UHFFFAOYSA-M 0.000 description 1
- PSGXOVBSDGJENZ-UHFFFAOYSA-M sodium;4-methoxybenzenesulfonate Chemical compound [Na+].COC1=CC=C(S([O-])(=O)=O)C=C1 PSGXOVBSDGJENZ-UHFFFAOYSA-M 0.000 description 1
- YWPOLRBWRRKLMW-UHFFFAOYSA-M sodium;naphthalene-2-sulfonate Chemical compound [Na+].C1=CC=CC2=CC(S(=O)(=O)[O-])=CC=C21 YWPOLRBWRRKLMW-UHFFFAOYSA-M 0.000 description 1
- XANVQSXUSVTAND-UHFFFAOYSA-N sodium;thiophene-2-sulfonic acid Chemical compound [Na].OS(=O)(=O)C1=CC=CS1 XANVQSXUSVTAND-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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- C07D241/36—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems
- C07D241/38—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems with only hydrogen or carbon atoms directly attached to the ring nitrogen atoms
- C07D241/40—Benzopyrazines
- C07D241/44—Benzopyrazines 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 carbon atoms of the hetero ring
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Abstract
本发明提供了一种2‑喹喔啉磺酸酯类化合物及其合成方法,该方法以电氧化促进了2‑喹喔啉酮与芳基磺酸钠的交叉偶联,使得制备2‑喹喔啉磺酸酯类化合物的操作简便,成本低廉,反应效率高,对环境友好,是目前报道的2‑喹喔啉磺酸酯类化合物合成的最直接高效的方法之一。另外,本发明提供的2‑喹喔啉磺酸酯类化合物是一系列结构多样性的、具有潜在应用价值的化合物,可以通过钯催化的偶联反应转化为含有炔基或者芳基的喹喔啉衍生物。经实验证实该类分子具有重要的药物和生物活性。
Description
技术领域
本发明属于有机合成技术领域,具体而言,涉及一种2-喹喔啉磺酸酯类化合物及其合成和纯化方法。
背景技术
官能团化的喹喔啉衍生物是一类重要的含氮杂环化合物,在多种具有生理功能和药学活性的分子合成中有着重要的应用(Journal of Medicinal Chemistry,2010,53,1128-1137;Organic Letters,2020,22,4217-4221)。作为一类特殊的喹喔啉类化合物,2-喹喔啉磺酸酯还可以通过钯催化的交叉偶联反应转化为炔基或者芳基取代喹喔啉衍生物等重要的药物活性分子(Bioorganic&Medicinal Chemistry Letters,2021,35,127784;Bioorganic&Medicinal Chemistry,2019,27,16-35)。然而,现有的2-喹喔啉磺酸酯的合成方法需要使用具有毒性的磺酰氯试剂,同时会产生盐酸副产物,从而造成潜在的环境污染,并给后续纯化工艺带来困扰。
发明内容
鉴于现有技术存在的不足,本发明人通过大量试验研究并不懈探索,建立了一种简单实用的2-喹喔啉磺酸酯类化合物制备方法,即使用取代2-喹喔啉酮和芳基磺酸钠盐为原料经电氧化交叉偶联反应合成了一系列2-喹喔啉磺酸酯类化合物。
基于发明人的上述研究成果,本发明的第一个目的在于提供一系列2-喹喔啉磺酸酯类化合物,结构通式如下:
其中R1为芳基,R2为氢或甲基,R3为氢或卤素,R4为氢或甲氧基或卤素,R5为氢或甲基。
进一步优选地,如上所述的2-喹喔啉磺酸酯类化合物,其中的芳基为含有取代基的C6-C7苯基、萘基或C4-C5杂环芳基。
再进一步优选地,如上所述的2-喹喔啉磺酸酯类化合物,其中的芳基选自如下的一种:含有一个取代基的苯基、2-萘基、2-噻吩基、3-吡啶基。
再进一步优选地,如上所述的2-喹喔啉磺酸酯类化合物,其中苯基上的取代基为甲基、甲氧基或卤素。
进一步优选地,如上所述的2-喹喔啉磺酸酯类化合物,其中所述的卤素为氟、氯、溴。
另外,本发明的第二个目的在于提供了一种上述2-喹喔啉磺酸酯类化合物的合成方法,该方法包括如下步骤:以2-喹喔啉酮类化合物和磺酸钠盐类化合物为原料,使用石墨碳作为阳极,泡沫镍片作为阴极,加入支持电解质和溶剂,在室温下以25~35mA 恒电流电解2~5h,得到2-喹喔啉磺酸酯类化合物粗品产物,其具体反应式如下:
其中R1为芳基,R2为氢或甲基,R3为氢或卤素,R4为氢或甲氧基或卤素,R5为氢或甲基。
进一步优选地,如上所述2-喹喔啉磺酸酯类化合物的合成方法,其中所述的电解质为四丁基溴化铵,所述的溶剂为体积比8:1的四氢呋喃-水混合液。
再者,本发明还提供了一种2-喹喔啉磺酸酯类化合物粗品的纯化方法,该方法包括:取上述合成方法得到的2-喹喔啉磺酸酯类化合物粗品产物,加入乙酸乙酯萃取,萃取物经硅胶柱层析纯化,洗脱液是体积比为5:1的石油醚:乙酸乙酯。
与现有技术相比,本发明创造性地以电氧化促进了2-喹喔啉酮与芳基磺酸钠的交叉偶联,使得制备2-喹喔啉磺酸酯类化合物的操作简便,成本低廉,反应效率高,环境污染少,取得到了较为理想的效果,是目前报道的2-喹喔啉磺酸酯类化合物合成的最直接高效的方法之一。另外,本发明提供的2-喹喔啉磺酸酯类化合物是一系列结构多样性的、具有潜在应用价值的化合物,可以通过钯催化的偶联反应转化为含有炔基或者芳基的喹喔啉衍生物。经实验证实该类分子具有重要的药物和生物活性。
附图说明
图1为本发明合成2-喹喔啉磺酸酯类化合物的反应式图。
具体实施方式
参见图1,在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮类化合物、1mmol磺酸钠盐类化合物)、1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液,从而得到2-喹喔啉磺酸酯类化合物粗品产物。
以下是本发明的具体实施例,对本发明的技术方案做进一步作描述,但是本发明的保护范围并不限于这些实施例。凡是不背离本发明构思的改变或等同替代均包括在本发明的保护范围之内。
实施例1:2-喹喔啉磺酸酯(3a)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol对甲基苯磺酸钠(2a)、1mmol 四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL× 3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶ 1),得到产品102mg,经计算收率为68%。
其主要理化性质如下:白色固体,熔点90-91℃;1H NMR(400MHz,CDCl3)δ8.65 (s,1H),8.10(d,J=9.4Hz,1H),8.03(d,J=8.0Hz,2H),7.90(d,J=9.8Hz,1H),7.82– 7.69(m,2H),7.38(d,J=8.0Hz,2H),2.46(s,3H).13C NMR(100MHz,CDCl3)δ151.05, 146.06,141.33,139.84,139.28,133.45,131.20,129.90,129.83,129.27,129.17,128.60,21.87.HRMS(ESI)Calcd for C15H12N2O3S(M+H)+:301.0641,Found:301.0628。
实施例2:2-喹喔啉磺酸酯(3b)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 6-甲氧基喹喔啉-2-酮(1b)、1mmol对甲基苯磺酸钠 (2a)、1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶ V乙酸乙酯=5∶1),得到产品141.9mg,经计算收率为86%。
其主要理化性质如下:白色固体,熔点116-117℃;1H NMR(400MHz,CDCl3)δ8.57(s,1H),7.95(d,J=8.4Hz,2H),7.74(ddd,J=8.6,2.1,1.0Hz,1H),7.36(td,J=9.1,2.1Hz,4H),3.92(s,3H),2.43(s,3H).13C NMR(100MHz,CDCl3)δ160.83,149.61,145.90,143.04,139.23,135.53,133.41,129.87,129.39,128.96,124.24,106.93,55.92,21.81.HRMS(ESI)Calcd for C16H14N2O4S(M+H)+:331.0753,Found:331.0747。
实施例3:2-喹喔啉磺酸酯(3c)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 5-甲基喹喔啉-2-酮(1c)、1mmol对甲基苯磺酸钠(2a)、 1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品114.6mg,经计算收率为73%。
其主要理化性质如下:白色固体,熔点:103-104℃;1H NMR(400MHz,CDCl3)δ 8.62(s,1H),7.99(d,J=8.0Hz,2H),7.69(d,J=8.8Hz,1H),7.61(t,J=7.7Hz,1H),7.53 (d,J=7.1Hz,1H),7.34(d,J=8.0Hz,2H),2.73(s,3H),2.42(s,3H).13C NMR(100MHz, CDCl3)δ150.89,145.96,140.54,140.11,137.86,137.78,133.50,131.07,129.95,129.86,129.13,126.41,21.84,17.44,17.44.HRMS(ESI)Calcd for C16H14N2O3S(M+H)+:315.0798,Found:315.0808。
实施例4:2-喹喔啉磺酸酯(3d)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 8-甲基喹喔啉-2-酮(1d)、1mmol对甲基苯磺酸钠(2a)、 1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品111.5mg,经计算收率为71%。
其主要理化性质如下:白色固体,熔点:99-100℃;1H NMR(400MHz,CDCl3)δ 8.65(s,1H),8.03(d,J=8.0Hz,2H),7.92(d,J=8.1Hz,1H),7.65–7.52(m,2H),7.37(d, J=8.0Hz,2H),2.54(s,3H),2.45(s,3H).13C NMR(100MHz,CDCl3)δ150.37,145.82, 141.53,138.92,138.72,137.10,133.90,131.29,129.79,129.48,129.17,127.02,21.85,17.26.HRMS(ESI)Calcd for C16H14N2O3S(M+H)+:315.0798,Found:315.0804。
实施例5:2-喹喔啉磺酸酯(3e)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 6-氟喹喔啉-2-酮(1e)、1mmol对甲基苯磺酸钠(2a)、 1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品79.5mg,经计算收率为50%。
其主要理化性质如下:白色固体,熔点:67-68℃;1H NMR(400MHz,CDCl3)δ8.64 (s,1H),7.99(d,J=8.0Hz,2H),7.88(dd,J=9.2,5.6Hz,1H),7.71(dd,J=8.8,2.8Hz, 1H),7.58–7.47(m,1H),7.37(d,J=8.0Hz,2H),2.45(s,3H).13C NMR(100MHz,CDCl3) δ163.85,161.34,150.71,150.68,146.16,141.96(d,J=13.0Hz),140.21,136.81,136.80, 133.30,130.48(d,J=9.9Hz),129.93,129.08,121.39(d,J=25.9Hz),113.11(d,J=21.9 Hz),21.84.19F NMR(376MHz,CDCl3)δ-107.86.HRMS(ESI)Calcd for C15H11FN2O3S (M+H)+:319.0547,Found:319.0551。
实施例6:2-喹喔啉磺酸酯(3f)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 6-氯喹喔啉-2-酮(1f)、1mmol对甲基苯磺酸钠(2a)、 1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品80.2mg,经计算收率为48%。
其主要理化性质如下:白色固体,熔点:93-94℃;1H NMR(400MHz,CDCl3)δ8.62 (s,1H),8.05(d,J=2.3Hz,1H),8.00(d,J=8.0Hz,2H),7.81(d,J=9.0Hz,1H),7.67(dd, J=9.0,2.3Hz,1H),7.37(d,J=8.0Hz,2H),2.45(s,3H).13C NMR(100MHz,CDCl3)δ 151.13,146.20,141.41,140.21,138.29,135.62,133.25,132.11,129.92,129.67,129.12,128.20,21.85.HRMS(ESI)Calcd for C15H11ClN2O3S(M+H)+:335.0252,Found: 335.0267。
实施例7:2-喹喔啉磺酸酯(3g)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 7-溴喹喔啉-2-酮(1g)、1mmol对甲基苯磺酸钠(2a)、1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品88.8mg,经计算收率为47%。
其主要理化性质如下:白色固体,熔点:128-129℃;1H NMR(400MHz,CDCl3) δ8.64(s,1H),8.12–7.99(m,3H),7.96(d,J=8.9Hz,1H),7.86–7.77(m,1H),7.41(d,J =8.0Hz,2H),2.48(s,3H).13C NMR(100MHz,CDCl3)δ151.69,146.27,140.49,140.03, 139.56,133.40,130.88,130.54,130.00,129.25,125.48,21.95.HRMS(ESI)Calcd forC15H11BrN2O3S(M+H)+:378.9747,Found:378.9736。
实施例8:2-喹喔啉磺酸酯(3h)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol对甲氧基苯磺酸钠(2h)、1 mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10 mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶1),得到产品96.4mg,经计算收率为61%。
其主要理化性质如下:灰白色固体,熔点:76-78℃;1H NMR(400MHz,CDCl3) δ8.65(s,1H),8.15–8.01(m,3H),7.93–7.84(m,1H),7.80–7.67(m,2H),7.03(d,J= 8.0Hz,2H),3.88(s,3H).13C NMR(100MHz,CDCl3)δ164.56,151.02,141.17,139.72, 139.21,131.46,131.11,129.70,129.15,128.47,127.40,114.41,55.83.HRMS(ESI)Calcd for C15H12N2O4S(M+Na)+:339.0410,Found:339.0410。
实施例9:2-喹喔啉磺酸酯(3i)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol邻溴苯磺酸钠(2i)、1mmol 四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶ 1),得到产品149.2mg,经计算收率为82%。
其主要理化性质如下:白色固体,熔点:98-99℃;1H NMR(400MHz,CDCl3)δ8.69 (s,1H),8.23(dt,J=7.3,1.7Hz,1H),8.07–7.98(m,1H),7.75(dt,J=7.8,1.4Hz,1H), 7.72–7.62(m,3H),7.54–7.42(m,2H).13C NMR(100MHz,CDCl3)δ150.68,141.19, 139.42,138.66,136.75,135.60,135.27,132.72,131.15,129.83,129.07,128.35,127.66, 120.96.HRMS(ESI)Calcd for C14H9BrN2O3S(M+H)+:364.9590,Found:364.9572。
实施例10:2-喹喔啉磺酸酯(3j)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol 2-萘磺酸钠(2j)、1mmol四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL×3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶ 1),得到产品110.9mg,经计算收率为66%。
其主要理化性质如下:白色固体,熔点:77-78℃;1H NMR(400MHz,CDCl3)δ8.71 (s,1H),8.67(s,1H),8.11(dd,J=8.7,1.9Hz,1H),8.08–8.02(m,1H),7.98(dd,J=11.4,8.4Hz,2H),7.89(dd,J=8.1,1.3Hz,1H),7.85–7.78(m,1H),7.73–7.56(m,4H).13C NMR(100MHz,CDCl3)δ150.94,141.22,139.65,139.09,135.64,133.18,131.84,131.30,131.14,129.84,129.76,129.50,129.45,129.14,128.42,128.03,127.92,123.23.HRMS(ESI)Calcd for C18H12N2O3S(M+Na)+:359.0461,Found:359.0460。
实施例11:2-喹喔啉磺酸酯(3k)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol 2-噻吩磺酸钠(2k)、1mmol 四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL× 3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶ 1),得到产品102.2mg,经计算收率为70%。
其主要理化性质如下:白色固体,熔点:117-118℃;1H NMR(400MHz,CDCl3) δ8.68(s,1H),8.18–8.09(m,1H),8.03–7.93(m,2H),7.85–7.73(m,3H),7.17(dd,J= 5.0,3.9Hz,1H).13C NMR(100MHz,CDCl3)δ151.05,141.47,139.77,139.07,136.67, 135.73,135.62,131.37,130.02,129.38,128.61,127.65.HRMS(ESI)Calcd for C12H8N2O3S2(M+Na)+:314.9869,Found:314.9883。
实施例12:3H-2-吡咯烷酮(3l)的合成,其结构式具体如下:
在电解池中安置石墨碳阳极和泡沫镍阴极,并将两电极与直流电源连接。接着,在电解池中依次加入0.5mmol 2-喹喔啉酮(1a)、1mmol 3-吡啶磺酸钠(2l)、1mmol 四丁基溴化铵、10mL四氢呋喃与水(体积比8:1)的混合溶剂。随后,在室温下电磁搅拌得均一溶液,与此同时以30mA恒电流电解该溶液4h。反应结束后,取出电极并用乙酸乙酯洗涤,反应液加入10mL饱和氯化钠溶液,然后用乙酸乙酯萃取(10mL× 3),无水硫酸钠干燥,过滤后减压浓缩,粗产品快速硅胶柱层析(V石油醚∶V乙酸乙酯=5∶ 1),得到产品86.1mg,经计算收率为60%。
其主要理化性质如下:白色固体,熔点:74-75℃;1H NMR(400MHz,CDCl3)δ9.40 (s,1H),8.93(dd,J=4.9,1.6Hz,1H),8.71(s,1H),8.48(dt,J=8.2,1.9Hz,1H),8.19– 8.07(m,1H),7.86(dt,J=8.1,2.8Hz,1H),7.83–7.72(m,2H),7.58(dd,J=8.1,4.9Hz, 1H).13CNMR(100MHz,CDCl3)δ154.92,150.94,150.09,141.49,139.46,138.83,136.89, 133.79,131.51,130.13,129.38,128.42,123.75.HRMS(ESI)Calcd for C13H9N3O3S (M+Na)+:310.0257,Found:310.0256。
Claims (9)
2.根据权利要求1所述的2-喹喔啉磺酸酯类化合物,其特征在于,所述的芳基为含有取代基的C6-C7苯基、萘基或C4-C5杂环芳基。
3.根据权利要求2所述的2-喹喔啉磺酸酯类化合物,其特征在于,所述的芳基选自如下的一种:含有一个取代基的苯基、2-萘基、2-噻吩基、3-吡啶基。
4.根据权利要求2所述的2-喹喔啉磺酸酯类化合物,其特征在于,所述的取代基为甲基、甲氧基或卤素。
5.根据权利要求1或4所述的2-喹喔啉磺酸酯类化合物,其特征在于,所述的卤素为氟、氯、溴。
6.一种根据权利要求1-5任一项所述2-喹喔啉磺酸酯类化合物的合成方法,其特征在于,该方法以2-喹喔啉酮类化合物和磺酸钠盐类化合物为原料,使用石墨碳作为阳极,泡沫镍片作为阴极,加入支持电解质和溶剂,在室温下以25~35mA恒电流电解2~5h,得到2-喹喔啉磺酸酯类化合物粗品产物。
7.根据权利要求6所述2-喹喔啉磺酸酯类化合物的合成方法,其特征在于,所述的支持电解质为四丁基溴化铵。
8.根据权利要求6所述2-喹喔啉磺酸酯类化合物的合成方法,其特征在于,所述的溶剂为体积比8:1的四氢呋喃-水混合液。
9.一种2-喹喔啉磺酸酯类化合物粗品的纯化方法,其特征在于,该方法包括:取权利要求6所述合成方法得到的2-喹喔啉磺酸酯类化合物粗品产物,加入乙酸乙酯萃取,萃取物经硅胶柱层析纯化,洗脱液是体积比为5:1的石油醚:乙酸乙酯。
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BRIJESH BHAYANA ET AL.: "A Versatile Catalyst System for Suzuki-Miyaura Cross-Coupling Reactions of C(sp2)-Tosylates and Mesylates", ORG. LETT., vol. 11, no. 17, pages 3954 - 3957, XP055056731, DOI: 10.1021/ol9015892 * |
JUNFENG YANG ET AL.: "Room-Temperature Suzuki–Miyaura Coupling of Heteroaryl Chlorides and Tosylates", EUR. J. ORG. CHEM., pages 6248 - 6259 * |
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