CN101691329B - 一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 - Google Patents
一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 Download PDFInfo
- Publication number
- CN101691329B CN101691329B CN2009101524183A CN200910152418A CN101691329B CN 101691329 B CN101691329 B CN 101691329B CN 2009101524183 A CN2009101524183 A CN 2009101524183A CN 200910152418 A CN200910152418 A CN 200910152418A CN 101691329 B CN101691329 B CN 101691329B
- Authority
- CN
- China
- Prior art keywords
- fluoro
- oxygen
- instead
- crotonate
- acid ester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000002194 synthesizing effect Effects 0.000 title abstract 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002253 acid Substances 0.000 claims abstract description 31
- 150000002148 esters Chemical group 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- QVCUKHQDEZNNOC-UHFFFAOYSA-N 1,2-diazabicyclo[2.2.2]octane Chemical compound C1CC2CCN1NC2 QVCUKHQDEZNNOC-UHFFFAOYSA-N 0.000 claims description 15
- 150000001336 alkenes Chemical class 0.000 claims description 14
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 238000004334 fluoridation Methods 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 3
- 238000004440 column chromatography Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims 2
- 239000002904 solvent Substances 0.000 claims 1
- 230000000707 stereoselective effect Effects 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 238000003682 fluorination reaction Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- -1 1-chloromethyl Chemical group 0.000 abstract 1
- PVEOYINWKBTPIZ-UHFFFAOYSA-N 3-Butenoic acid Natural products OC(=O)CC=C PVEOYINWKBTPIZ-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012363 selectfluor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- IGELFKKMDLGCJO-UHFFFAOYSA-N xenon difluoride Chemical compound F[Xe]F IGELFKKMDLGCJO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
本发明涉及一种高立体和区域选择性的3-氟-4-氧-2(反)-丁烯酸酯的合成方法。通过2,3-联烯酸酯与1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐在无水乙腈中,80℃下搅拌,发生亲电氟化反应,合成3-氟-4-氧-2(反)-丁烯酸酯。本发明操作简单,原料和试剂易得,反应具有高度的区域和立体选择性,产物易分离纯化,适用于高效快速合成3-氟-4-氧-2(反)-丁烯酸酯。
Description
技术领域
本发明涉及一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法,即通过2,3-联烯酸酯和1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(Selectfluor)反应,高区域和立体选择性地合成3-氟-4-氧-2(反)-丁烯酸酯的方法。
背景技术
目前已经证实许多的单氟取代的有机化合物都具有潜在的生理活性,也是天然产物中常见的结构单元之一,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(J.FluorineChem.2001,109,3;Modern Fluoroorganic Chemistry,1st ed.,Willly-VCH,Weinhein,2004;J.Med.Chem.2008,51,4359.)。目前还没有对3-氟-4-氧-2(反)-丁烯酸酯类化合物合成方法的文献报导。
发明内容
本发明的目的就是提供一种通过对2,3-联烯酸酯的亲电氟化反应,高区域和立体选择性有效的合成3-氟-4-氧-2(反)-丁烯酸酯类化合物的方法,产物为单一立体构型。
本发明提供合成3-氟-4-氧-2(反)-丁烯酸酯的方法,由2,3-联烯酸酯和1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐的亲电氟化反应,高区域和立体选择性地合成3-氟-4-氧-2(反)-丁烯酸酯2,3-联烯酸酯,反应式如下:
R1=芳基,R2=烷基或苄基,其中烷基为CnH2n+1(n=1~7),其步骤是:
(1)在氮气保护下,将2,3-联烯酸酯,1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐及水,溶解在无水乙腈中,加热到80℃搅拌9-12小时;
(2)步骤(1)反应完全后,用水淬灭反应;
(3)用乙醚萃取,无水硫酸钠干燥,过滤,浓缩,快速柱层析,获得3-氟-4-氧-2(反)-丁烯酸酯。
本发明中联烯酸酯与1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐的摩尔比为1∶1.2~1∶3.0,其中1∶3.0最佳。
本发明中联烯酸酯与水的摩尔比为1∶0.5。
本发明中联烯酸酯在无水乙腈中的浓度为0.1mol/L。
本发明具有以下优点:1)反应条件相对简单,不需要金属和酶催化剂;2)反应具有高度的区域和立体选择性;3)选用了一种温和,低毒的氟化试剂,避免传统使用氟气、氟化氙等进行氟化反应所带来的高危险与高污染性;4)产物易分离纯化。
本发明创新点在于避免了使用剧毒氟化试剂,发展了一种高选择性合成单一3-氟-4-氧-2(反)-丁烯酸酯的新模式。所得的相应的3-氟-4-氧-2(反)-丁烯酸酯的产率为43-56%。
具体实施方式
实施例1
在氮气保护下,将2-甲基-4-苯基-2,3-丁烯酸乙酯(39.9mg,0.20mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,223.2mg,0.60mmol)及水(1.8mg,1.8μL,0.10mmol),溶解在2.0mL无水乙腈中,加热到80℃搅拌10.5小时,薄层层析跟踪原料消失后,加入10mL水萃灭反应。用乙醚萃取,饱和氯化钠溶液洗涤,无水硫酸钠干燥,过滤,浓缩,快速柱层析,得产物3-氟-4-氧-2-甲基-4-苯基-2(反)-丁烯酸乙酯25.8mg,产率为55%,产物为液体。
1H NMR(300MHz,CDCl3)δ7.96-7.89(m,2H),7.66-7.58(m,1H),7.53-7.45(m,2H),3.99(q,J=7.2Hz,2H),2.05(d,J=4.2Hz,3H),0.98(t,J=7.4Hz,3H);
13C NMR(75MHz,CDCl3)δ187.2(d,J=28.1Hz),166.1(d,J=17.4Hz),158.9(d,J=276.2),134.6,134.1,129.2,128.8,114.9(d,J=16.9Hz),61.4,13.4,10.7(d,J=5.4Hz);
19F NMR(282MHz,CDCl3)δ-100.5;
IR(neat)v(cm-1)3064,2984,2936,1725,1682,1598,1583,1451,1369,1302,1202,1176,1113,1082,1019;
MS(70eV,EI)m/z(%):236(M+,7.13),105(100);
HRMS calcd for C13H13O3F(M+):236.0849.Found:236.0842.
实施例2
按实施例1所述的方法,不同的是所用底物为:2-乙基-4-苯基-2,3-丁烯酸乙酯(64.1mg,0.30mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,336.2mg,0.90mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-乙基-4-苯基-2(反)-丁烯酸乙酯41.5mg,产率为56%。产物为液体。
1H NMR(300MHz,CDCl3)δ7.95-7.88(m,2H),7.66-7.58(m,1H),7.54-7.46(m,2H),4.01(q,J=7.1Hz,2H),2.53(qd,J1=7.6Hz,J2=3.6Hz,2H),1.91(t,J=7.6Hz,3H),1.01(t,J=7.1Hz,3H);
13C NMR(75MHz,CDCl3)δ187.1(d,J=28.8Hz),165.9(d,J=16.5Hz),158.0(d,J=276.8Hz),134.7,134.1,129.2(d,J=2.0Hz),128.8,121.5(d,J=15.4Hz),61.4,19.2(d,J=4.4Hz),13.4,12.8(d,J=2.0Hz);
19F NMR(282MHz,CDCl3)δ-104.5;
IR(neat)v(cm-1)2981,2940,1727,1683,1598,1582,1450,1369,1309,1276,1256,1201,1176,1122,1024;
MS(70eV,EI)m/z(%):250(M+,6.31),105(100);
HRMS calcd for C14H15O3F(M+):250.1005.Found:250.1007.
实施例3
按实施例1所述的方法,不同的是所用底物为:2-苄基-4-苯基-2,3-丁烯酸乙酯(83.9mg,0.30mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,336.1mg,0.90mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-苄基-4-苯基-2(反)-丁烯酸乙酯42.1mg,产率为45%。产物为液体。
1H NMR(300MHz,CDCl3)δ7.97-7.88(m,2H),7.66-7.57(m,1H),7.53-7.44(m,2H),7.36-7.21(m,5H),3.93(q,J=7.2Hz,2H),3.85(d,J=3.6Hz,2H),0.90(t,J=7.2Hz,3H);
13C NMR(75MHz,CDCl3)δ186.9(d,J=28.4Hz),165.3(d,J=17.0Hz),159.2(d,J=278.6Hz),137.6(d,J=2.6Hz),134.5,134.2,129.2,128.9,128.7,128.6,126.7,118.3(d,J=14.4Hz),61.5,31.1(d,J=4.0Hz),13.2;
19F NMR(282MHz,CDCl3)δ-100.3;
IR(neat)v(cm-1)3084,3064,3030,2983,2937,1724,1682,1598,1582,1495,1451,1370,1310,1276,1203,1182,1103,1037,1022;
MS(70eV,EI)m/z(%):312(M+,4.06),266(100);
HRMS calcd for C19H17O3F(M+):312.1162.Found:312.1168.
实施例4
按实施例1所述的方法,不同的是所用底物为:2-甲基-4-(对氟苯基)-2,3-丁烯酸乙酯(65.8mg,0.30mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,335.6mg,0.90mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-甲基-4-(对氟苯基)-2(反)-丁烯酸乙酯34.1mg,产率为45%。产物为液体。
1H NMR(300MHz,CDCl3)δ8.00-7.92(m,2H),7.22-7.12(m,2H),4.04(q,J=7.2Hz,2H),2.05(d,J=4.5Hz,3H),1.03(t,J=7.2Hz,3H);
13C NMR(75MHz,CDCl3)δ185.6(d,J=28.8Hz),166.3(d,J=256.1Hz),166.0(d,J=16.8Hz),158.6(d,J=276.5Hz),132.0(dd,J1=9.8Hz,J2=1.4Hz),131.1(d,J=3.2Hz),116.2(d,J=22.1Hz),115.2(d,J=16.0Hz),61.5,13.5,10.8(d,J=5.8Hz);
19F NMR(282MHz,CDCl3)δ-101.2,-102.7;
IR(neat)v(cm-1)3078,2985,2937,1727,1683,1600,1507,1446,1413,1370,1306,1240,1202,1155,1114,1082,1018;
MS(70eV,EI)m/z(%):254(M+,6.93),123(100);
HRMS calcd for C13H12O3F2(M+):254.0755.Found:254.0761.
实施例5
按实施例1所述的方法,不同的是所用底物为:2-甲基-4-(对溴苯基)-2,3-丁烯酸乙酯(83.8mg,0.30mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,335.5mg,0.90mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-甲基-4-(对溴苯基)-2(反)-丁烯酸乙酯51.5mg,产率为55%。产物为液体。
1H NMR(300MHz,CDCl3)δ7.78(d,J=8.4Hz,2H),7.64(d,J=8.4Hz,2H),4.03(q,J=7.2Hz,2H),2.04(d,J=4.2Hz,3H),1.04(t,J=7.2Hz,3H);
13C NMR(75MHz,CDCl3)δ186.1(d,J=28.7Hz),166.0(d,J=15.9Hz),158.3(d,J=276.6Hz),133.4,132.2,130.6(d,J=1.0Hz),129.5,115.5(d,J=16.0Hz),61.5,13.5,10.8(d,J=5.2Hz);
19F NMR(282MHz,CDCl3)δ-101.8;
IR(neat)v(cm-1)3091,2984,2936,2872,1728,1682,1586,1484,1446,1399,1369,1304,1202,1173,1112,1069,1012;
MS(70eV,EI)m/z(%):316(M+(81Br),17.93),314(M+(79Br),17.55),185(99.06),183(100);
HRMS calcd for C13H12O3 79BrF(M+):313.9954.Found:313.9952.
实施例6
按实施例1所述的方法,不同的是所用底物为:2-甲基-4-(对甲苯基)-2,3-丁烯酸乙酯(64.6mg,0.30mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,335.9mg,0.90mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-甲基-4-(对甲苯基)-2(反)-丁烯酸乙酯32.4mg,产率为43%。产物为液体。
1H NMR(300MHz,CDCl3)δ7.85-7.79(m,2H),7.31-7.26(m,2H),3.99(q,J=7.2Hz,2H),2.42(s,3H),2.04(d,J=4.2Hz,3H),0.99(t,J=7.2Hz,3H);
13C NMR(75MHz,CDCl3)δ186.8(d,J=28.2Hz),166.1(d,J=17.6Hz),159.3(d,J=277.2Hz),145.3,132.2,129.5,129.4(d,J=1.2Hz),114.4(d,J=15.4Hz),61.4,21.8,13.4,10.7(d,J=5.5Hz);
19F NMR(282MHz,CDCl3)δ-99.9;
IR(neat)v(cm-1)3033,2984,2934,2872,1727,1681,1606,1574,1446,1410,1369,1299,1202,1177,1113,1081,1019;
MS(70eV,EI)m/z(%):250(M+,8.05),119(100);
HRMS calcd for C14H15O3F(M+):250.1005.Found:250.1003.
实施例7
按实施例1所述的方法,不同的是所用底物为:2-正丙基-4-(对溴苯基)-2,3-丁烯酸乙酯(91.1mg,0.29mmol),1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐(95%,330.6mg,0.89mmol)和水(2.7mg,2.7μL,0.15mmol),在3mL乙腈中,得产物3-氟-4-氧-2-正丙基-4-(对溴苯基)-2(反)-丁烯酸乙酯46.7mg,产率为46%。产物为液体。
1H NMR(300MHz,CDCl3)δ7.81-7.73(m,2H),7.67-7.60(m,2H),4.05(q,J=7.2Hz,2H),2.54-2.42(m,2H),1.67-1.55(m,2H),1.06(t,J=7.2Hz,3H),1.01(t,J=7.4Hz,3H);
13C NMR(75MHz,CDCl3)δ186.0(d,J=30.0Hz),165.9(d,J=15.4Hz),157.8(d,J=275.0Hz),133.5,132.2,130.6(d,J=2.0Hz),129.4,120.8(d,J=16.0Hz),61.5,27.6(d,J=3.5Hz),21.3(d,J=2.2Hz),13.8,13.5;
19F NMR(282MHz,CDCl3)δ-105.3;
IR(neat)v(cm-1)2965,2935,2874,1728,1687,1586,1484,1464,1399,1369,1311,1272,1228,1199,1173,1124,1070,1011;
MS(70eV,EI)m/z(%):344(M+(81Br),20.01),342(M+(79Br),20.23),185(98.06),183(100);
HRMS calcd for C15H16O3 79BrF(M+):342.0267.Found:342.0263.
Claims (5)
1.一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法,其特征是:2,3-联烯酸酯与1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐,水,在无水乙腈溶剂中,高区域和立体选择性地的发生亲电氟化反应,生成3-氟-4-氧-2(反)-丁烯酸酯,反应式如下:
R1=芳基;R2=烷基或苄基,其中烷基为CnH2n+1,式中n=1~7;其步骤是:
(1)在氮气保护下,将2,3-联烯酸酯,1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)盐和水,溶解在无水乙腈中,加热到80℃搅拌9-12小时;
(2)步骤(1)反应完全后,用水淬灭反应;
(3)用乙醚萃取,无水硫酸钠干燥,过滤,浓缩,快速柱层析,获得3-氟-4-氧-2(反)-丁烯酸酯。
2.根据权利要求1所述的合成3-氟-4-氧-2(反)-丁烯酸酯的方法,其特征是所述的联烯酸酯与1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)的摩尔比为1∶1.2~1∶3.0。
3.根据权利要求2所述的合成3-氟-4-氧-2(反)-丁烯酸酯的方法,其特征是所述的联烯酸酯与1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷二(四氟硼酸)的摩尔比为1∶3.0。
4.根据权利要求1所述的合成3-氟-4-氧-2(反)-丁烯酸酯的方法,其特征是所述的联烯酸酯与水摩尔比为1∶0.5。
5.根据权利要求1所述的合成3-氟-4-氧-2(反)-丁烯酸酯的方法,其特征是所述的联烯酸酯在无水乙腈中的浓度为0.1mol/L。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009101524183A CN101691329B (zh) | 2009-09-08 | 2009-09-08 | 一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009101524183A CN101691329B (zh) | 2009-09-08 | 2009-09-08 | 一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101691329A CN101691329A (zh) | 2010-04-07 |
CN101691329B true CN101691329B (zh) | 2012-11-28 |
Family
ID=42080066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2009101524183A Expired - Fee Related CN101691329B (zh) | 2009-09-08 | 2009-09-08 | 一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101691329B (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101220012A (zh) * | 2008-01-09 | 2008-07-16 | 浙江大学 | 一种合成多取代4-氟-2(5h)-呋喃酮的方法 |
CN101250091A (zh) * | 2008-01-09 | 2008-08-27 | 浙江大学 | 多取代2-氟烯丙醇类化合物的合成 |
-
2009
- 2009-09-08 CN CN2009101524183A patent/CN101691329B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101220012A (zh) * | 2008-01-09 | 2008-07-16 | 浙江大学 | 一种合成多取代4-氟-2(5h)-呋喃酮的方法 |
CN101250091A (zh) * | 2008-01-09 | 2008-08-27 | 浙江大学 | 多取代2-氟烯丙醇类化合物的合成 |
Non-Patent Citations (2)
Title |
---|
"Easy Access to 5-Alkyl-4-bromo-2(5H)-furanonesS: ynthesis of a Fimbrolide, an Acetoxyfimbrolide, and Bromobeckerelide";Pedro de March, et al.;《J. Org. Chem.》;19951231;第60卷;第1814-1822页 * |
PedrodeMarch et al.."Easy Access to 5-Alkyl-4-bromo-2(5H)-furanonesS: ynthesis of a Fimbrolide |
Also Published As
Publication number | Publication date |
---|---|
CN101691329A (zh) | 2010-04-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20030181759A1 (en) | Process for the preparation of 2-halobenzoic acids | |
CN102659494B (zh) | 3,3-二取代-2-氧化吲哚类化合物的不对称合成方法 | |
CN102491974A (zh) | 1-(2-氟苄基)-1H-吡唑并[3,4-b]吡啶-3-甲脒盐酸盐的合成方法 | |
CN106117216A (zh) | 一种常压高效合成6H‑异吲哚[2,1‑a]吲哚‑6‑酮类化合物的方法 | |
CN103965093A (zh) | 2-全氟烷基吲哚类化合物及其制备方法和应用 | |
CN108864164A (zh) | 一种一级胺导向的2-炔基吲哚类化合物的合成方法 | |
CN101691329B (zh) | 一种合成3-氟-4-氧-2(反)-丁烯酸酯的方法 | |
CN105017048A (zh) | 一种含有四取代碳手性中心的α-氟烷基-α-氨基酸类化合物及其制备方法 | |
CN102863371B (zh) | 氟代二氢吡咯或氟代吡咯 | |
CN105007734A (zh) | 制备4-氨基-5-氟-3-氯-6-(取代的)吡啶甲酸酯的方法 | |
CN111233666A (zh) | 一种高效合成三氟甲基化合物的方法、三氟甲基化合物及应用 | |
CN106349161A (zh) | 一种4‑(2’,2’,2’‑三氟)乙基喹啉系列物的制备方法 | |
CN114573512B (zh) | 一种合成c2-二氟烷基苯并咪唑衍生物的方法 | |
CN101220012B (zh) | 一种合成多取代4-氟-2(5h)-呋喃酮的方法 | |
CN109776488A (zh) | 一种邻位醛基的α-酮酰胺类化合物的合成方法 | |
CN106397377B (zh) | 一种富电子五元杂环酸及其衍生物脱羧上氟的方法 | |
CN105524062A (zh) | 他达拉非的合成方法 | |
CN106008362B (zh) | 一种嘧啶衍生物的制备方法 | |
US8530666B2 (en) | Copper-catalysed process for the production of substituted or unsubstituted trifluormethylated aryl and heteroaryl compounds | |
CN101691364B (zh) | 一种合成4-氟-2-(5氢)呋喃酮的方法 | |
CN107417548A (zh) | 可比司他中间体及其制备方法 | |
CN104478799B (zh) | 1,4-二烯丙基异喹啉的制备方法 | |
CN104230926A (zh) | 米诺膦酸关键中间体的制备方法 | |
CN104447439B (zh) | 一种具有光学活性的含氟烷基烯丙基胺类化合物及制备方法 | |
CN108047114B (zh) | 卤代三氟甲基吡咯衍生物及其制备方法和应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 |