CN103951666B - 一种合成七元含氮杂环化合物的新方法 - Google Patents
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- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N dimethyl sulfoxide Natural products CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 8
- -1 methoxyl group Chemical group 0.000 claims description 8
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 claims description 7
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 claims description 6
- 238000010189 synthetic method Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 2
- UOHBMRODJBFDPN-UHFFFAOYSA-N C(C)(C)(C)O.[Li] Chemical compound C(C)(C)(C)O.[Li] UOHBMRODJBFDPN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 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
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 2
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- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-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
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229940113088 dimethylacetamide Drugs 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
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- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- NTTOTNSKUYCDAV-UHFFFAOYSA-N potassium hydride Chemical compound [KH] NTTOTNSKUYCDAV-UHFFFAOYSA-N 0.000 claims description 2
- 229910000105 potassium hydride Inorganic materials 0.000 claims description 2
- BDAWXSQJJCIFIK-UHFFFAOYSA-N potassium methoxide Chemical compound [K+].[O-]C BDAWXSQJJCIFIK-UHFFFAOYSA-N 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000012312 sodium hydride Substances 0.000 claims description 2
- 229910000104 sodium hydride Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract description 3
- 229910052723 transition metal Inorganic materials 0.000 abstract description 3
- 150000003624 transition metals Chemical class 0.000 abstract description 3
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 20
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 5
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
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- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- FQXNZGACVLDMKC-UHFFFAOYSA-N COc(cc(CCN(C1)C(c2c(C=C)cccc2)=O)c1c1)c1OC Chemical compound COc(cc(CCN(C1)C(c2c(C=C)cccc2)=O)c1c1)c1OC FQXNZGACVLDMKC-UHFFFAOYSA-N 0.000 description 1
- 0 COc1c(*)cc(C(CCc2c3cccc2)N(CC2)C3=O)c2c1 Chemical compound COc1c(*)cc(C(CCc2c3cccc2)N(CC2)C3=O)c2c1 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 238000005576 amination reaction Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/10—Spiro-condensed systems
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
本发明提供一种合成七元含氮杂环化合物的新方法。该方法以乙烯基芳酰胺为原料,在氮气保护下,加入一种碱,在溶剂中加热,即可以良好的产率得到七元含氮杂环化合物。该方法无需使用过渡金属催化剂,反应操作简便,反应产率高,对于七元含氮杂环化合物的工业制备具有很高的实用价值。
Description
技术领域
本发明涉及一种合成七元含氮杂环化合物的新方法,属有机合成领域。
背景技术
七元环含氮杂环化合物广泛存在于天然产物和合成药物中。目前该类化合物通常采用以下几种方法制备:过渡金属催化的[4+3]加成反应;以邻胺基苯乙烯类化合物和丁烯二醇双碳酸甲酯为原料,过渡金属催化的烯基化与分子内烯丙基胺化串联反应(Angew.Chem.Int.Ed.,2010,49,1496);以酰胺化合物及不饱和醛酮为原料,过渡金属催化的C-H活化反应(Angew.Chem.Int.Ed.,2013,52,5393)。上述制备方法都有各自的局限性,如产率低、使用特殊的原料、操作困难、需要昂贵的金属催化剂等。因此,发展高效和低成本的七元含氮杂环化合物的合成新方法具有必要性。
本发明提供一种合成七元含氮杂环化合物的新方法。以乙烯基芳酰胺为原料,加入一种碱,在溶剂中加热,即可以良好的产率得到七元含氮杂环化合物。该方法无需使用过渡金属催化剂,反应操作简便,反应产率高,对于七元含氮杂环化合物的工业制备具有很高的实用价值。
发明内容
本发明的目的是提供一种合成七元含氮杂环化合物的新方法。
具体的技术方案为:采用式(II)所示的乙烯基芳酰胺为原料,加入一种碱,在溶剂中加热,反应一定时间后即可得到式(I)所示的七元含氮杂环化合物。
其中R1、R2可以独立的代表单取代、双取代的甲基、甲氧基、硝基、三氟甲基、氟、氯、溴、碘、羟基、二甲基胺基,也可以代表双取代碳与其相连的碳组成的苯环、吡啶环;
R3、R4代表氢、C1-C6的烷烃及环烷烃、甲氧基;
X,Y代表CH=CH,CH=N,O,S,NH,NCH3。
所述的碱为叔丁醇钾、叔丁醇钠、叔丁醇锂、甲醇钾、甲醇钠、氢氧化钾、氢氧化钠、氢化钠、氢化钾,优选为叔丁醇钾。
所述的溶剂为N,N-二甲基甲酰胺、二甲基亚砜、N,N-二甲基乙酰胺,优选为N,N-二甲基甲酰胺。
所述的碱与底物的摩尔比为1∶1~5∶1,优选为3∶1。
所述的反应温度为60~120℃,优选为90℃。
所述的反应时间为0.2~8小时,优选为0.5小时。
本发明所述合成七元含氮杂环化合物的新方法,具有操作简便,反应产率高,无需添加过渡金属催化剂的优点。
具体实施方式
以下结合实施例对本发明做进一步的阐述,但这些实施例不是对本发明的限制。
实施例1
在50mL圆底烧瓶中,加入叔丁醇钾(336mg,3.0mmol),IIa(263mg,1.0mmol),N,N-二甲基甲酰胺(10mL),在氮气保护下反应0.5小时。反应完成后加入二氯甲烷(20mL),分离有机层,水层用二氯甲烷(20mL)萃取一次,合并的有机层用无水硫酸镁干燥,减压蒸馏除去溶剂得到粗产物。以石油醚和乙酸乙酯的混合溶剂为洗脱剂,用硅胶柱层析分离纯化得到白色固体Ia(166mg,收率63%)。熔点:129.0-129.9℃.1HNMR(400MHz,CDCl3):δ7.70(n,1H),7.39(m,2H),7.18(m,4H),6.95(d,J=7.1Hz,1H),4.50(dd,J=12.3,5.3Hz,1H),3.92(dd,J=8.9,4.0Hz,2H),2.99(dt,J=11.7,5.5Hz,3H),2.76(dd,J=13.7,6.4Hz,1H),2.16(m,2H).13CNMR(100MHz,CDCl3):δ170.6,137.4,136.1,136.1,135.2,131.0,128.8,128.4,128.3,127.2,127.0,126.7,126.1,55.5,39.8,39.5,30.9,29.0.IR(KBr)v/cm-1:2927,2910,2861,1639,1603,1457,1425,1230,749.HRMS(ESI)C18H18NO(M+H)+理论计算值:264.1383,实际值:264.1380.
实施例2
采用与实施例1相同的程序,减少叔丁醇钾用量为168mg(1.5mmol),得到IIa(66mg,收率25%)。
实施例3
采用与实施例1相同的程序,用叔丁醇钠(288mg,3.0mmol)代替叔丁醇钾,得到IIa(15mg,收率6%)。
实施例4
采用与实施例1相同的程序,以二甲亚砜代替N,N-二甲基甲酰胺为溶剂,得到IIa(53mg,收率20%)。
实施例5
采用与实施例1相同的程序,改变反应温度为60℃,得到IIa(132mg,收率50%)。
实施例6
采用与实施例1相同的程序,以IIb(277mg,1.0mmol)为原料,得到白色固体Ib(213mg,收率77%)。熔点:132.3-133.1℃.1HNMR(400MHz,CDCl3):δ7.74(dd,J=7.4,1.5Hz,1H),7.46-7.34(m,2H),7.22(dd,J=10.0,2.5Hz,2H),7.16(ddd,J=11.8,7.8,2.5Hz,2H),6.87(d,J=7.4Hz,1H),4.38(ddd,J=12.5,4.7,2.1Hz,1H),3.88(d,J=11.3Hz,1H),3.36-3.15(m,2H),3.12-3.00(m,1H),2.99-2.90(m,1H),2.51(d,J=13.3Hz,1H),2.26-2.12(m,1H),0.87(d,J=6.7Hz,3H).13CNMR(100MHz,CDCl3):δ171.1,136.6,136.0,135.7,135.0,130.6,129.6,128.6,128.2,127.7,127.5,127.2,126.1,62.8,42.9,42.7,39.0,28.8,16.4.IR(KBr)v/cm-1:3033,2960,2930,2871,1635,1603,1400,1380,771,756.HRMS(ESI)C19H20NO(M+H)+理论计算值:278.1535,实际值:278.1539.
实施例7
采用与实施例1相同的程序,以IIc(317mg,1.0mmol)为原料,得到白色固体Ic(232mg,收率73%)。熔点:195.1-197.0℃.1HNMR(400MHz,CDCl3):δ7.74(dd,J=7.5,1.4Hz,1H),7.43(td,J=7.4,1.5Hz,1H),7.38(td,J=7.5,1.1Hz,1H),7.26-7.20(m,2H),7.19-7.10(m,2H),6.87(d,J=7.6Hz,1H),4.40(s,1H),4.27(ddd,J=12.7,5.4,1.8Hz,1H),3.31(td,J=13.2,4.3Hz,1H),3.14-3.04(m,1H),2.88(ddd,J=13.5,6.8,4.7Hz,2H),2.68(d,J=13.1Hz,1H),1.77-1.63(m,2H),1.53(dt,J=12.0,7.5Hz,2H),1.42(ddd,J=30.0,14.6,6.7Hz,3H),1.11-1.02(m,1H).13CNMR(100MHz,CDCl3):δ171.8,137.8,136.9,136.0,133.1,130.7,129.3,129.1,128.7,127.7,127.5,127.2,126.0,62.7,57.0,42.6,42.2,32.8,31.2,28.7,23.5,21.9.IR(KBr)v/cm-1:2956,2873,1631,1601,1457,1399,761.HRMS(ESI)C22H24NO(M+H)+理论计算值:318.1852,实际值:318.1854.
实施例8
采用与实施例1相同的程序,以IId(277mg,1.0mmol)为原料,得到白色固体Id(175mg,收率63%)。熔点:140.3-140.9℃.1HNMR(400MHz,CDCl3):δ7.52(s,1H),7.24-7.12(m,4H),7.10(d,J=7.6Hz,1H),6.96(d,J=7.1Hz,1H),4.51(dd,J=12.2,5.4Hz,1H),3.92(s,2H),2.97(d,J=5.6Hz,3H),2.73(dd,J=13.8,6.1Hz,1H),2.37(s,3H),2.21-2.07(m,2H).13CNMR(100MHz,CDCl3):δ170.8,136.9,136.2,135.9,135.3,134.4,131.6,129.3,128.3,128.2,126.9,126.7,126.1,55.6,39.8,39.5,30.4,29.0,21.0.IR(KBr)v/cm-1:3305,2933,2837,1629,1606,1531,1504,1453,1252,1177,1030,844,763.HRMS(ESI)C19H20NO(M+H)+理论计算值:278.1539,实际值:278.1539.
实施例8
采用与实施例1相同的程序,以IIe(323mg,1.0mmol)为原料,得到白色固体Ie(294mg,收率91%)。熔点:149.0-150.5℃.1HNMR(400MHz,CDCl3):δ7.70(dd,J=7.5,1.3Hz,1H),7.41(tdd,J=14.9,10.6,4.5Hz,2H),7.22(d,J=7.3Hz,1H),6.70(s,1H),6.47(s,1H),4.45(dd,J=12.2,5.3Hz,1H),4.02-3.95(m,1H),3.89(d,J=11.1Hz,3H),3.84(dd,J=9.1,3.7Hz,1H),3.76(d,J=16.7Hz,3H),3.06-2.98(m,1H),2.92-2.87(m,2H),2.77(dd,J=13.6,6.2Hz,1H),2.26-2.09(m,2H).13CNMR(100MHz,CDCl3):δ170.5,147.9,147.7,137.3,136.2,130.9,128.7,128.2,127.7,127.2,127.1,111.3,109.3,56.0,55.9,55.1,39.6,39.1,30.8,28.5.IR(KBr)v/cm-1:3030,2962,2931,2870,2853,1630,1598,1457,1420,752.HRMS(ESI)C20H22NO3(M+H)+理论计算值:324.1588,实际值:324.1594。
Claims (6)
1.一种合成式(I)所示七元含氮杂环化合物的方法,其特征在于采用式(II)所示的乙烯基芳酰胺为原料,加入一种碱,在溶剂中加热,得到式(I)所示的七元含氮杂环化合物;所述的碱为叔丁醇钾、叔丁醇钠、叔丁醇锂、甲醇钾、甲醇钠、氢氧化钾、氢氧化钠、氢化钠、氢化钾;所述的溶剂为二甲基亚砜、N,N-二甲基甲酰胺、N,N-二甲基乙酰胺;所述的式(I)、式(II)化合物的结构如下:
其中R1、R2可以独立的代表单取代、双取代的甲基、甲氧基、硝基、三氟甲基、氟、氯、溴、碘、羟基、二甲基胺基,也可以代表双取代碳与其相连的碳组成的苯环、吡啶环;
R3、R4代表氢、C1-C6的烷烃及环烷烃、甲氧基;
X,Y代表CH=CH,CH=N,O,S,NH,NCH3。
2.根据权利要求1所述的合成方法,其特征在于所述的碱为叔丁醇钾。
3.根据权利要求1所述的合成方法,其特征在于所述的碱相对于式(II)所示的酰胺的用量的摩尔比为1∶1~5∶1。
4.根据权利要求1所述的合成方法,其特征在于所述的溶剂为N,N-二甲基甲酰胺。
5.根据权利要求1所述的合成方法,其特征在于反应温度为60~120℃。
6.根据权利要求1所述的合成方法,其特征在于反应时间为0.2~8小时。
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Efficient cyclization of tertiary amines and alkenes promoted by KOt-Bu-DMF;Chen YY et al;《Chemical Communications》;20131008;第49卷(第93期);第10974-10976页 * |
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