CN101054347A - 合成3-甲酯-2-卤素-1,3(z)-共轭二烯的方法 - Google Patents
合成3-甲酯-2-卤素-1,3(z)-共轭二烯的方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 150000001993 dienes Chemical class 0.000 title abstract 3
- 230000002194 synthesizing effect Effects 0.000 title abstract 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 12
- 125000001424 substituent group Chemical group 0.000 claims abstract description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 24
- 150000002367 halogens Chemical class 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical group CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 9
- 235000009518 sodium iodide Nutrition 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000003118 aryl group Chemical group 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004440 column chromatography Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 229940059936 lithium bromide Drugs 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
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 19
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010189 synthetic method Methods 0.000 abstract description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- -1 diene compounds Chemical class 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 238000005481 NMR spectroscopy Methods 0.000 description 33
- 239000007788 liquid Substances 0.000 description 18
- 239000000758 substrate Substances 0.000 description 17
- 239000011734 sodium Substances 0.000 description 5
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 101100391174 Dictyostelium discoideum forC gene Proteins 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 239000003586 protic polar solvent Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
本发明涉及一种3-甲酯-2-卤素-1,3(Z)-共轭二烯及其合成方法,通过卤盐与3-甲酯-1,2-联烯-4-醇在三氟乙酸或乙酸回流条件下发生加成消除反应得到一系列的3-甲酯-2-卤素-1,3(Z)-共轭二烯化合物,本方法操作简单,原料和试剂易得,反应具有高度的立体选择性,能同时引入多个取代基,产物易分离纯化,适用于合成各种取代的3-甲酯-2-卤素-1,3(Z)-共轭二烯。
Description
技术领域
本发明涉及一种高立体选择性地合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法,即通过卤盐与3-甲酯-1,2-联烯-4-醇的加成消除反应合成3-甲酯-2-卤素-1,3(Z)-共轭二烯。
背景技术
1,3-共轭二烯是有机合成中最重要的中间体之一,也是天然产物中最常见的结构单元之一,具有多种重要的生理活性,在生物技术领域,医药及农药等方面有巨大的开发利用价值。以往文献报道的关于1,3-共轭二烯的合成方法的反应立体选择性不高或需要贵金属的参与。
因此有效方便、不需要贵金属参与合成高立体选择性1,3-共轭二烯将是对以往反应的很大突破。
发明内容
本发明的目的就是提供一种通过卤盐与3-甲酯-1,2-联烯-4-醇的加成消除反应,高立体选择性地合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法。
本发明合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法,通过卤盐与3-甲酯-1,2-联烯-4-醇的加成消除反应合成3-甲酯-2-卤素-1,3(Z)-共轭二烯,反应式如下:
其中烷基为CnH2n+1(n=2-5),芳基为苯基以及含有取代基的上述基团,其步骤是:
(1)在室温下将3-甲酯-1,2-联烯-4-醇加入到卤盐MX的有机溶剂中,然后加热回流1-4小时,冷到室温加水淬灭,碳酸氢钠固体中和,乙醚萃取。
(2)浓缩,快速柱层析,获得3-甲酯-2-卤素-1,3(Z)-共轭二烯。
本发明的有机溶剂为质子性溶剂:三氟乙酸,乙酸。当R=烷基时,所述的有机溶剂为三氟乙酸;当R=芳基时,所述的有机溶剂为乙酸。
本发明的3-甲酯-1,2-联烯-4-醇与有机溶剂摩尔比为:0.48~0.52mmol/1mL,优选为0.5mmol/1mL。
本发明的卤盐与3-甲酯-1,2-联烯-4-醇的当量比为2~4∶1。
本发明的卤盐为碘化钠,溴化锂(带一个结晶水),氯化锂(带一个结晶水)。
本发明涉及一种3-甲酯-2-卤素-1,3(Z)-共轭二烯,通过卤盐与3-甲酯-1,2-联烯-4-醇的加成消除反应合成3-甲酯-2-卤素-1,3(Z)-共轭二烯,本方法操作简单,原料和试剂易得,反应具有高度的立体选择性,适用于合成各种取代的3-甲酯-2-卤素-1,3(Z)-共轭二烯。
本发明克服了传统方法的弊端,具有以下优点:1)反应具有高度的立体选择性;2)不需要贵金属参与;3)产物易分离纯化。
本发明创新点在于发展了一种高立体选择性地合成-1,3(Z)-共轭二烯的方法学。
本方法所得的相应的3-甲酯-2-卤素-1,3(Z)-共轭二烯的产率为26~76%。
具体实施方式
以下实施例有助于理解本发明,但不限于本发明的内容。
实施例1
室温下加入NaI(151.1mg,1.0mmol),3-甲酯-1,2-己二烯-4-醇(77.0mg,0.49mmol)和三氟乙酸(1mL),然后置八十度下回流1小时反应完全,冷至室温,加10mL水淬灭,再加碳酸氢钠中和,直到几乎不冒气泡,乙醚萃取(3×25mL),饱和Na2S2O3水溶液,饱和食盐水各洗一次,无水硫酸钠干燥,过滤,浓缩,快速柱层析,得产物65.4mg,产率为50%。产物为无色液体。
1H NMR(300MHz,CDCl3)δ6.75(t,J=7.8Hz,1H),6.08(d,J=1.1Hz,1H),6.03(d,J=1.1Hz,1H),3.77(s,3H),2.29-2.18(m,2H),1.06(t,J=7.7Hz,3H);
13C NMR(75MHz,CDCl3):δ165.3,146.6,135.7,131.2,96.3,52.1,22.8,12.3;
MS(m/z):267(M++1,100);
IR(neat,cm-1):2962,1722,1603,1434,1243;
HRMS calcd for C8H11IO2(M+):265.9798,Found:265.9790.
实施例2
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(105.0mg,1.0mmol),3-甲酯-1,2-己二烯-4-醇(77.1mg,0.49mmol)和三氟乙酸(1mL),得产物60.2mg,产率为56%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.88(t,J=7.8Hz,1H),5.84(d,J=2.0Hz,1H),5.66(d,J=2.0Hz,1H),3.79(s,3H),2.32-2.26(m,2H),1.07(t,J=7.6Hz,3H);13C NMR(100-MHz,CDCl3):δ165.5,148.5,132.9,122.6,122.3,52.2,22.9,12.8;MS(m/z):220(M+(81Br),8.22),218(M+(79Br),8.32),139(100);IR(neat,cm-1):2971,2952,1724,1645,1615,1267,1245.HRMS calcdfor C8H11BrNaO2(M++Na):242.9822(81Br),240.9835(79Br),Found:242.9811(81Br),240.9833(79Br).
实施例3
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(122.1mg,2.02mmol),3-甲酯-1,2-己二烯-4-醇(78.8mg,0.51mmol)和三氟乙酸(1mL),得产物35.5mg,产率为40%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.94(t,J=7.8Hz,1H),5.62(d,J=1.2Hz,1H),5.26(d,J=1.2Hz,1H),3.79(s,3H),2.36-2.27(m,2H),1.07(t,J=7.6Hz,3H);13C NMR(100MHz,CDCl3):δ165.6,149.1,133.0,131.4,118.3,52.2,23.0,13.0;MS(m/z):176(M+(37Cl),3.72),174(M+(35Cl),11.67),139(100);IR(neat,cm-1):2971,2955,1725,1644,1619,1246.HRMS calcd for C8H11ClO2(M+):174.0448(35Cl),Found:174.0448(35Cl).
实施例4
按实施例1所述的方法,不同的是所用底物和试剂为:NaI(150.1mg,1.0mmol),3-甲酯-1,2-庚二烯-4-醇(85.2mg,0.50mmol)和三氟乙酸(1mL),得产物102.1mg,产率为73%。产物为无色液体。
1H NMR(300MHz,CDCl3)δ6.75(t,J=7.7Hz,1H),6.07(d,J=1.0Hz,1H),6.01(d,J=1.0Hz,1H),3.75(s,3H),2.18(q,J=7.6Hz,2H),1.56-1.40(m,2H),0.92(t,J=7.2Hz,3H);13CNMR(75MHz,CDCl3):δ165.3,145.3,136.2,131.2,96.5,52.1,31.3,21.3,13.9;MS(m/z):280(M+,16.64),93(100);IR(neat,cm-1):2959,1723,1639,1605,1249.HRMS calcd for C9H13IO2(M+):279.9960,Found:279.9974.
实施例5
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(105.1mg,1.0mmol),3-甲酯-1,2-庚二烯-4-醇(83.7mg,0.49mmol)和三氟乙酸(1mL),得产物87.2mg,产率为76%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.88(t,J=7.6Hz,1H),5.83(d,J=1.2Hz,1H),5.64(d,J=1.2Hz,1H),3.77(s,3H),2.26(q,J=7.6Hz,2H),1.55-1.43(m,2H),0.94(t,J=7.4Hz,3H);13CNMR(100MHz,CDCl3):δ165.3,147.1,133.4,122.6,122.5,52.1,31.4,21.6,13.8;MS(m/z):234(M+(81Br),6.15,232(M+(79Br),6.45),93(100);IR(neat,cm-1):2960,1725,1614,1251.HRMScalcd for C9H13BrNaO2(M++Na):256.9979(81Br),254.9991(79Br),Found:256.9974(81Br),254.9994(79Br).
实施例6
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(122.0mg,2.02mmol),3-甲酯-1,2-庚二烯-4-醇(84.5mg,0.50mmol)和三氟乙酸(1mL),得产物51.1mg,产率为55%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.94(t,J=7.8Hz,1H),5.60(d,J=1.2Hz,1H),5.24(d,J=1.2Hz,1H,3.77(s,3H),2.28(q,J=7.5Hz,2H),1.55-1.42(m,2H),0.94(t,J=7.4Hz,3H);13CNMR(100MHz,CDCl3):δ165.5,147.7,133.1,132.0,118.3,52.1,31.5,21.7,13.8;MS(m/z):190(M+(37Cl),3.81),188(M+(35Cl),11.30),93(100);IR(neat,cm-1):2961,1727,1618,1251.HRMScalcd for C9H13ClNaO2(M+Na):213.0481(37Cl),211.0496(35Cl),Found:213.0468(37Cl),211.0497(35Cl).
实施例7
按实施例1所述的方法,不同的是所用底物和试剂为:NaI(150.2mg,1.0mmol),3-甲酯-5-甲基-1,2-己二烯-4-醇(84.3mg,0.50mmol)和三氟乙酸(1mL),得产物74mg,产率为53%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.55(d,J=10.8Hz,1H),6.07(d,J=0.8Hz,1H),6.02(d,J=0.8Hz,1H),3.76(s,3H),2.82-2.69(m,1H),1.03(d,J=6.8Hz,6H);13C NMR(100MHz,CDCl3):δ165.5,151.3,134.1,131.0, 96.3,52.1,28.8,21.2;MS(m/z):280(M+,19.15),93(100);IR(neat,cm-1):2962,1724,1643,1605,1434,1248.HRMS calcd for C9H13IO2(M+):279.9955,Found:279.9957.
实施例8
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(105.1mg,1.0mmol),3-甲酯-5-甲基-1,2-己二烯-4-醇(86.2mg,0.51mmol)和三氟乙酸(1mL),得产物75mg,产率为64%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.69(d,J=11.2Hz,1H,5.83(d,J=1.6Hz,1H),5.66(d,J=1.6Hz,1H),3.79(s,3H),2.86-2.74(m,1H),1.05(d,J=6.4Hz,6H);13C NMR(100MHz,CDCl3):δ165.6,153.2,131.1,122.5,122.4,52.2,28.9,21.7;MS(m/z):234(M+(81Br),0.98),232(M+(79Br),1.01),153(100);IR(neat,cm-1):2964,1725,1614,1249.HRMS calcd for C9H13BrO2(M+):234.0082(81Br),232.0093(79Br),Found:234.0069(81Br),232.0098(79Br).
实施例9
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(122.1mg,2.01mmol),3-甲酯-5-甲基-1,2-己二烯-4-醇(85.7mg,0.50mmol)和三氟乙酸(1mL),得产物36.9mg,产率为39%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.73(d,J=10.8Hz,1H),5.59(d,J=1.0Hz,1H),5.25(d,J=1.0Hz,1H),3.77(s,3H),2.85-2.73(m,1H),1.04(d,J=6.8Hz,6H);13C NMR(100MHz,CDCl3):δ165.7,153.7,133.2,129.6,118.0,52.2,28.9,21.8;MS(m/z):190(M+(37Cl),4.81),188(M+(35Cl),14.93),93(100);IR(neat,cm-1):2964,1726,1618,1251.HRMS calcd for C9H13ClO2(M+):190.0583(37Cl),188.0600(35Cl),Found:190.0574(37Cl),188.0604(35Cl).
实施例10
按实施例1所述的方法,不同的是所用底物和试剂为:NaI(150.1mg,1.0mmol),3-甲酯-5-甲基-1,2-壬二烯-4-醇(96.0mg,0.48mmol)和三氟乙酸(1mL),得产物111.7mg,产率为75%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.77(t,J=7.6Hz,1H),6.09(d,J=1.2Hz,1H),6.02(d,J=1.2Hz,1H),3.77(s,3H),2.21(q,J=7.6Hz,2H),1.51-1.38(m,2H),1.36-1.26(m,4H),0.88(t,J=7.0Hz,3H);13C NMR(100MHz,CDCl3):δ165.3,145.6,136.1,131.2,96.6,52.1,31.5,29.4,27.7,22.4,13.9;MS(m/z):308(M+,16.31),121(100);IR(neat,cm-1):2955,2927,l724,1640,1606,1434,1251,1051.HRMS calcd for C11H17INaO2(M++Na):331.0165,Found:331.0161.
实施例11
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(104.5mg,1.0mmol),3-甲酯-5-甲基-1,2-壬二烯-4-醇(98.1mg,0.49mmol)和三氟乙酸(1mL),得产物86.4mg,产率为67%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.90(t,J=7.6Hz,1H),5.84(d,J=1.6Hz,1H),5.65(d,J=1.6Hz,1H),3.78(s,3H),2.28(q,J=7.6Hz,2H),1.51-1.39(m,2H),1.35-1.26(m,4H),0.88(tJ=6.8Hz,3H);13C NMR(100MHz,CDCl3):δ165.4,147.5,133.1,122.7,122.4,52.2,31.4,29.4,27.9,22.4,l3.9;MS(m/z):262(M+(81Br),1.01,260(M+(79Br),1.03),181(100);IR(neat,cm-1):2955,2928,1726,1647,1615,1457,1435,1254.HRMS calcd for C11H17O2(M+-Br):181.1223.Found:181.1223.HRMS calcd for C10H14BrO(M+-OCH3):231.0211(81Br),229.0223(79Br),Found:231.0202(81Br),229.0220(79Br).
实施例12
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(118.2mg,1.95mmol),3-甲酯-5-甲基-1,2-壬二烯-4-醇(98.6mg,0.50mmol)和三氟乙酸(1mL),得产物50.8mg,产率为47%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ6.94(t,J=8.0Hz,1H),5.60(d,J=1.2Hz,1H),5.24(d,J=1.2Hz,1H),3.77(s,3H),2.28(q,J=8.0Hz,2H),1.51-1.38(m,2H),1.35-1.22(m,4H),0.87(t,J=7.0Hz,3H);13C NMR(100MHz,CDCl3):δ165.5,148.1,133.0,131.7,118.3,52.2,31.4,29.5,28.1,22.4,13.9;MS(m/z):218(M+(37Cl),0.93),216(M+(35Cl),2.82,181(100);IR(neat,cm-1):2956,2929,1727,1650,1619,1458,1435,1255,1053.HRMS calcd for C11H17ClO2(M+):218.0899(37Cl),216.0912(35Cl),Found:218.0886(37Cl),216.0917(35Cl).
实施例13
按实施例1所述的方法,不同的是所用底物和试剂为:NaI(150.2mg,1.0mmol),3-甲酯-4-苯基-1,2-丁二烯-4-醇(100.4mg,0.49mmol)和乙酸(1mL),得产物61.6mg,产率为40%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.76-7.65(m,2H),7.52(s,1H),7.45-7.38(m,3H),6.21(d,J=1.4Hz,1H),6.13(d,J=1.4Hz,1H),3.86(s,3H);13C NMR(100MHz,CDCl3):δ166.0,139.6,133.9,133.5,131.8,131.1,130.0, 128.6, 98.4,52.6;MS(m/z):314(M+,8.26),128(100);IR(neat,cm-1):2949,1716,1635,1597,1448,1434,1255,1201.HRMS calcd for C12H11IO2(M+):313.9798,Found:313.9801.
实施例14
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(105.0mg,1.0mmol),3-甲酯-4-苯基-1,2-丁二烯-4-醇(103.7mg,0.51mmol)和乙酸(1mL),得产物59.1mg,产率为44%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.74-7.66(m,2H),7.65(s,1H),7.44-7.35(m,3H),5.86(d,J=1.8Hz,1H),5.79(d,J=1.8Hz,1H),3.86(s,3H);13C NMR(100MHz,CDCl3):δ166.0,141.5,133.3,130.8,130.1,128.5,123.6,123.2,52.5;MS(m/z):268(M+(81Br),4.34),266(M+(79Br),4.40),128(100);IR(neat,cm-1):2950,1717,1644,1604,1448,1434,1256,1202.HRMS calcd forC12H11BrO2(M+):267.9927(81Br),265.9937(79Br),Found:267.9919(81Br),265.9939(79Br).
实施例15
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(123.1mg,2.03mmol),3-甲酯-4-苯基-1,2-丁二烯-4-醇(103.3mg,0.51mmol)和乙酸(1mL),得产物33.9mg,产率为31%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.71(s,1H),7.69-7.61(M,2H),7.40-7.35(m,3H,5.61(d J=1.8Hz,1H),5.37(d,J=1.8Hz,1H),3.86(s,3H);13C NMR(100MHz,CDCl3):δ166.1,142.3,134.0,133.4,130.5,130.1,129.4,128.6,118.9,52.6;MS(m/z):224(M+(37Cl),3.78),222(M+(35Cl),11.39),128(100);IR(neat,cm-1):2951,1717,1649,1608,1448,1435,1258,1202.HRMScalcd for C12H11ClO2(M+):224.0430(37Cl),222.0442(35Cl),Found:224.0417(37Cl),222.0446(35Cl).
实施例16
按实施例1所述的方法,不同的是所用底物和试剂为:NaI(150.2mg,1.0mmol),3-甲酯-4-对甲基苯基-1,2-丁二烯-4-醇(107.7mg,0.49mmol)和乙酸(1mL),得产物117.5mg,产率为73%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.62(d,J=7.6Hz,2H),7.49(s,1H),7.20(d,J=8.0Hz,2H),6.20(d,J=1.6Hz,1H),6.13(d,J=1.6Hz,1H),3.85(s,3H),2.37(s,3H);13C NMR(100MHz,CDCl3):δ166.0,140.5,139.6,132.8,131.6,131.3,130.6,129.3,98.9,52.4,21.5;MS(m/z):328(M+,9.21),142(100);IR(neat,cm-l):2949,1716,1659,1605,1434,1256.HRMS calcd forC13H13IO2(M+):327.9955,Found:327.9955.
实施例17
按实施例1所述的方法,不同的是所用底物和试剂为:LiBr·H2O(105.1mg,1.0mmol),3-甲酯-4-对甲基苯基-1,2-丁二烯-4-醇(111.8mg,0.51mmol)和乙酸(1mL),得产物88.8mg,产率为62%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.62(s,1H),7.61(d,J=8.4Hz,2H),7.20(d,J=8.4Hz,2H),5.86(d,J=1.6Hz,1H),5.80(d,J=1.6Hz,1H),3.85(s,3H),2.37(s,3H);13C NMR(100MHz,CDCl3):δ166.1,141.5,140.7,130.9,130.5,129.7,129.3,124.0,123.0,52.4,21.4;MS(m/z):282(M+(81Br),4.46),280(M+(79Br),4.5),142(100);IR(meat,cm-1):2950,1716,1640,1604,1511,1434,1258,1050.HRMS calcd for C13H13BrO2(M+):282.0084(81Br),280.0093(79Br),Found:282.0071(81Br),280.0096(79Br).
实施例18
按实施例1所述的方法,不同的是所用底物和试剂为:LiCl·H2O(120.5mg,1.99mmol),3-甲酯-4-对甲基苯基-1,2-丁二烯-4-醇(110.5mg,0.51mmol)和乙酸(1mL),得产物70.4mg,产率为59%。产物为无色液体。
1H NMR(400MHz,CDCl3)δ7.69(s,1H),7.57(d,J=8.4Hz,2H),7.19(d,J=8.4Hz,2H),5.62(d,J=1.4Hz,1H),5.38(d,J=1.4Hz,1H,3.85(s,3H),2.37(s,3H);13C NMR(100MHz,CDCl3):δ166.2,142.3,140.7,134.2,130.6,130.5,129.3,128.2,118.8,52.4,21.4;MS(m/z):238(M+(37Cl),3.48),236(M+(35Cl),10.33),142(100);IR(neat,cm-1):2951,1716,1641,1607.1512,1435,1258,1052.HRMS calcd for C13H13ClO2(M+):238.0588(37Cl),236.0599(35Cl),Found:238.0574(37Cl),236.0600(35Cl).
Claims (4)
2、根据权利要求1所述的合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法,其特征是当R=烷基时所述的有机溶剂为三氟乙酸;当R=芳基时所述的有机溶剂为乙酸,3-甲酯-1,2-联烯-4-醇与有机溶剂比为:0.48~0.52mmol∶1mL。
3、根据权利要求1所述的合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法,其特征是所述卤盐为碘化钠,带一个结晶水的溴化锂,带一个结晶水的氯化锂的一种。
4、根据权利要求1所述的合成3-甲酯-2-卤素-1,3(Z)-共轭二烯的方法,其特征是卤盐与3-甲酯-1,2-联烯-4-醇的当量比为2~4∶1。
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