CN103880790B - 一种呋喃偶联化合物的合成方法 - Google Patents

一种呋喃偶联化合物的合成方法 Download PDF

Info

Publication number
CN103880790B
CN103880790B CN201410092085.0A CN201410092085A CN103880790B CN 103880790 B CN103880790 B CN 103880790B CN 201410092085 A CN201410092085 A CN 201410092085A CN 103880790 B CN103880790 B CN 103880790B
Authority
CN
China
Prior art keywords
furan
synthetic method
coupling compound
oxygen
methylene
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
Application number
CN201410092085.0A
Other languages
English (en)
Other versions
CN103880790A (zh
Inventor
王永强
李娜娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northwest University
Original Assignee
Northwest University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Northwest University filed Critical Northwest University
Priority to CN201410092085.0A priority Critical patent/CN103880790B/zh
Publication of CN103880790A publication Critical patent/CN103880790A/zh
Application granted granted Critical
Publication of CN103880790B publication Critical patent/CN103880790B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/36Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/40Radicals substituted by oxygen atoms
    • C07D307/42Singly bound oxygen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/54Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

本发明公开了一种呋喃偶联化合物的合成方法,其步骤是以取代呋喃为起始原料,三氟乙酸钯或醋酸钯为催化剂,氧气为氧化剂,在有机溶剂中经一步合成得到取代呋喃偶联产物。本发明方法实现了通过C‑H键活化直接氧化呋喃偶联,其与传统方法相比操作简单,底物适应范围更广,反应效率更高,环境友好,产率高,原子利用率高。

Description

一种呋喃偶联化合物的合成方法
技术领域
本发明涉及一种呋喃偶联化合物的合成方法,属于有机合成技术领域。
背景技术
低聚的呋喃化合物在自然界、药物和功能性材料上发挥着重要和广泛的作用。因此,许多有机化学家们试图寻找有效的合成方法来合成这类化合物。传统的合成方法是通过呋喃卤化物与呋喃的有机金属试剂、呋喃的硼酸试剂、其他富电子的呋喃试剂反应合成;或通过两个呋喃有机金属试剂或两个呋喃卤化物直接自身偶联合成。这些方法需要事先制备呋喃卤化物或金属试剂,因此步骤比较繁琐;而且有机金属试剂高的反应活性,容易与水和氧反应,因而这些反应一般需要在无水无氧的气氛中进行,反应条件苛刻,反应要求较高的操作技巧;加之有些呋喃的金属试剂本身较难合成,因此这些传统的方法从原子经济性、步骤经济性、可操作性和环境保护方面具有很大提升空间。
近年来,利用碳氢键活化策略的芳基偶联反应取得了很大发展,这类方法是直接通过切断两个芳香环的C-H键而偶联,因此,这种方法用于制备芳基偶联化合物不仅合成步骤非常简洁,而且节能环保,具有很好的经济效益和应用价值。现今,这类碳氢键活化策略已成功应用到苯环、噻吩环、吲哚环、咔唑环、吡啶环等芳香环的偶联。然而据发明人所知,尽管呋喃是一种很重要而常见的杂芳环,但这类碳氢键活化的策略还未应用到呋喃化合物的偶联上。最近报道,呋喃低聚物具有高荧光性、刚性和溶解性,而且含呋喃基的材料可以生物降解,因而本方法具有重要的应用价值。
发明内容
本发明的目的在于提供一种操作简单、底物适应范围广、反应效率更高、环境友好、原子经济效益高的呋喃偶联化合物的合成方法。
本发明实现过程如下:
一种呋喃偶联化合物的合成方法,其以取代呋喃I为起始原料,三氟乙酸钯或醋酸钯为催化剂,氧气为氧化剂,在有机溶剂中经一步合成得到取代呋喃偶联产物II;
其中,R为C1~C18的烷基、卤素、C2~C6的烷氧亚甲基、苄氧亚甲基、C2~C18的酯基。
R优选为甲基、乙基、丙基、丁基、戊基、己基、甲氧亚甲基、苄氧亚甲基、丙酸乙酯基等酯基。
上述的有机溶剂为二甲亚砜(DMSO);上述反应中加入有三氟乙酸(TFA)。
本发明的合成机理是由C2-位或C3-位取代呋喃I出发,通过钯催化的C-H键活化反应一步得到目标产物产物II。
本发明的优点:(1)本发明实现了通过C-H键活化直接氧化呋喃偶联,此方法与传统方法相比操作简单,底物适应范围更广,反应效率更高,环境友好,产率高,原子利用率高。(2)本发明应用于C2位或C3位不同取代的呋喃化合物的合成,所得的化合物具有高的C5位偶联的区域选择性。
具体实施方式
在10mL单颈烧瓶中加入三氟乙酸钯或醋酸钯 (10 mmol %),橡皮塞封口抽真空,用氧气球置换瓶中的空气,使瓶中充满氧气。然后,在氧气氛围下向烧瓶中依次通过注射器加入DMSO (1.5 mL)、TFA (1mmol),并将反应混合物在室温下搅拌均匀。向搅拌均匀的烧瓶中加入取代呋喃I(1 mmol),在室温下反应24h (反应时间和温度由不同的底物决定),TLC板检测反应,直到原料反应完全。然后向反应混合物中加少量的NaHCO3中和过量的TFA,用适量乙醚萃取三次,合并有机相;水洗,饱和食盐水洗,用MgSO 4干燥,减压浓缩,柱色谱分离得自身偶联产物。
实施例1
IIa
在10mL单颈烧瓶中加入Pd(OAc)2 (22.4 mg,10 mmol %),封口抽真空,用氧气球置换瓶中的空气,使烧瓶中充满氧气。然后,在氧气氛围下向烧瓶中依次通过注射器加入DMSO (1.5 mL)、TFA(75 μL,1 mmol),并将反应混合物在室温下搅拌均匀。向搅拌均匀的烧瓶中加入2-乙基呋喃(105 μL, 1 mmol),在室温下反应24h,TLC板检测反应,直到原料反应完全。然后向反应混合物中加少量的NaHCO3中和过量的TFA,用乙醚萃取三次,合并有机相;水洗,饱和食盐水洗,用MgSO 4干燥,减压浓缩,柱色谱分离,正己烷为洗脱剂,得自身偶联产物IIa(76 mg,80%)。
IR (KBr) υ 3116, 2973, 2933, 1658, 1512, 780 cm-1;HRMS (ESI): Exact mass calcd for C12H14O2 [M + Na]+: 213.0886. Found: 213.0897;1H NMR (400 MHz, CDCl3) δ 6.38 (s, 2H), 6.02 (s, 2H), 2.91 – 2.41 (m, 4H), 1.26 (t, J = 8 Hz, 6H);13C NMR (100 MHz, CDCl3) δ 157.1, 145.3, 105.7, 105.0, 21.5 , 12.3。
实施例2
IIb
在10mL单颈烧瓶中加入Pd(OAc)2 (22.4 mg,10 mmol %),封口抽真空,用氧气球置换瓶中的空气,使烧瓶中充满氧气。然后,在氧气氛围下向烧瓶中依次通过注射器加入DMSO (1.5 mL)、TFA (75 μL,1 mmol),并将反应混合物在室温下搅拌均匀。向搅拌均匀的烧瓶中加入2-苄氧亚甲基呋喃(188 mg,1 mmol),在50℃下反应24h,TLC板检测反应,直到原料反应完全。然后向反应混合物中加少量的NaHCO3中和过量的TFA,用乙醚萃取三次,合并有机相;水洗,饱和食盐水洗,用MgSO4干燥,减压浓缩,柱色谱分离,正己烷/乙酸乙酯为1:20做洗脱剂,得自身偶联产物IIb(159 mg,85%)。
IR (KBr) υ 3026, 2853, 2793, 1466, 1205, 1060, 796, 733, 694 cm-1; HRMS (ESI):Exact mass calcd for C24H22O4[M + Na]+: 397.1410. Found: 397.1420;1H NMR (400 MHz, CDCl3) δ 7.58 – 7.36 (m, 8H), 7.36 – 7.26 (m, 2H), 6.59 (d,J = 2.8 Hz, 2H), 6.44 (d,J = 4Hz,2H), 4.62 (s, 4H), 4.56 (s,4H);13C NMR (100 MHz, CDCl3) δ 151.2, 146.8, 137. 9, 128.5, 128.1, 127.9, 111.5, 106.1, 72.0, 63. 9。
实施例3
IIc
在10mL单颈烧瓶中加入Pd(OAc)2 (22.4 mg, 10 mmol %),封口抽真空,用氧气球置换瓶中的空气,使烧瓶中充满氧气。然后,在氧气氛围下向烧瓶中依次通过注射器加入DMSO (1.5 mL)、TFA (75 μL,1 mmol),并将反应混合物在室温下搅拌均匀。向搅拌均匀的烧瓶中加入2-呋喃丙酸乙酯(168 mg,1 mmol),在50℃下反应24h,TLC板检测反应,直到原料反应完全。然后向反应混合物中加少量的NaHCO3中和过量的TFA,用乙醚萃取三次,合并有机相;水洗,饱和食盐水洗,用MgSO4干燥,减压浓缩,柱色谱分离,正己烷/乙酸乙酯为1:10做洗脱剂,得自身偶联产物IIc(136 mg,81%)。
IR (KBr) υ 2991, 2922, 2853,1730, 1390, 791 cm-1 ;HRMS (ESI): Exact mass calcd for C18H22O6[M + Na]+: 357.1309. Found: 357.1311;1H NMR (400 MHz, CDCl3) δ 6.38 (d, J = 4 Hz, 2H), 6.09 (d, J = 4 Hz, 2H), 4.17 (dd, J = 8, 4 Hz, 4H), 3.02 (t, J = 8 Hz, 4H), 2.69 (t, J = 6 Hz, 4H), 1.28 (t, J =6 Hz, 6H); 13C NMR (100 MHz, CDCl3) δ 172.5, 153.5, 145.5, 107.2, 105.3, 60.7, 32.9, 23.2, 14.3。
实施例4
IId
在10mL单颈烧瓶中加入Pd(OAc)2 (22.4 mg,10 mmol %),封口抽真空,用氧气球置换瓶中的空气,使烧瓶中充满氧气。然后,在氧气氛围下向烧瓶中依次通过注射器加入DMSO (1.5 mL)、TFA(75 μL,1 mmol),并将反应混合物在室温下搅拌均匀。向搅拌均匀的烧瓶中加入3-苄氧亚甲基呋喃(188 mg,1 mmol),在50℃下反应24h,TLC板检测反应,直到原料反应完全。然后向反应混合物中加少量的NaHCO3中和过量的TFA,用乙醚萃取三次,合并有机相;水洗,饱和食盐水洗,用MgSO4干燥,减压浓缩,柱色谱分离,正己烷/乙酸乙酯为1:20做洗脱剂,得自身偶联产物IId(106mg,57%)。
IR (KBr) υ 3029, 2923, 2854, 1735, 1449, 1051, 794, 749, 695 cm-1; HRMS (ESI): Exact mass calcd for C24H22O4[M + Na]+: 397.1410. Found: 397.1420;1H NMR (400 MHz, CDCl3) δ 7.54 – 7.18 (m, 12H), 6.60 (s, 2H), 4.55 (s, 4H), 4.44 (s, 4H); 13C NMR (100 MHz, CDCl3) δ 147.2, 140.1, 138.2, 128.7, 128.1, 128.0, 124.3, 106.2, 72.2, 63.5。

Claims (3)

1.一种呋喃偶联化合物的合成方法,其特征在于:以取代呋喃I为起始原料,醋酸钯为催化剂,氧气为氧化剂,在二甲亚砜中经一步合成得到取代呋喃偶联产物II;
其中,R为C1~C18的烷基、卤素、C2~C6的烷氧亚甲基、苄氧亚甲基、C2~C18的酯基。
2.根据权利要求1所述呋喃偶联化合物的合成方法,其特征在于:R为甲基、乙基、丙基、丁基、戊基、己基、甲氧亚甲基、苄氧亚甲基或丙酸乙酯基。
3.根据权利要求1所述呋喃偶联化合物的合成方法,其特征在于:反应中加入三氟乙酸。
CN201410092085.0A 2014-03-13 2014-03-13 一种呋喃偶联化合物的合成方法 Expired - Fee Related CN103880790B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410092085.0A CN103880790B (zh) 2014-03-13 2014-03-13 一种呋喃偶联化合物的合成方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410092085.0A CN103880790B (zh) 2014-03-13 2014-03-13 一种呋喃偶联化合物的合成方法

Publications (2)

Publication Number Publication Date
CN103880790A CN103880790A (zh) 2014-06-25
CN103880790B true CN103880790B (zh) 2016-08-24

Family

ID=50949957

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410092085.0A Expired - Fee Related CN103880790B (zh) 2014-03-13 2014-03-13 一种呋喃偶联化合物的合成方法

Country Status (1)

Country Link
CN (1) CN103880790B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3768760A1 (en) * 2018-03-21 2021-01-27 ExxonMobil Chemical Patents Inc. Functionalized bifuran and synthesis thereof
CN109776298B (zh) * 2019-03-17 2021-04-27 西北大学 一种肉桂醛类化合物的合成方法
WO2020215812A1 (zh) * 2019-04-25 2020-10-29 中国科学院大连化学物理研究所 一种2-烷基呋喃制4,4'-二烷基联苯的方法
CN111848555B (zh) * 2019-04-25 2023-06-20 中国科学院大连化学物理研究所 一种2-烷基呋喃制5,5′-二烷基-2,2′-联呋喃类化合物的新方法
CN115073401B (zh) * 2021-03-16 2023-07-14 华南理工大学 2,3’-双呋喃类化合物和2,3’-低聚呋喃类化合物及其制备方法和应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101142204A (zh) * 2005-01-12 2008-03-12 霍尼韦尔国际公司 Kumada偶联反应的改进方法
CN101792427A (zh) * 2010-03-25 2010-08-04 浙江大学 一种合成多取代呋喃的方法
CN102120735A (zh) * 2011-01-20 2011-07-13 清华大学 一种制备含有2,5-二取代基的取代呋喃的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101142204A (zh) * 2005-01-12 2008-03-12 霍尼韦尔国际公司 Kumada偶联反应的改进方法
CN101792427A (zh) * 2010-03-25 2010-08-04 浙江大学 一种合成多取代呋喃的方法
CN102120735A (zh) * 2011-01-20 2011-07-13 清华大学 一种制备含有2,5-二取代基的取代呋喃的方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Oxidative dimerization of thiophenes and furans bearing electron-withdrawing substituents by palladium acetate;Toshio Itahara 等;《Synthesis》;19840331;第255-256页 *
Tetrathia- and Tetraoxarubyrins : Aromatic, Core-Modified, Expanded Porphyrins;Alagar Srinivasan 等;《Angew. Chem. Int. Ed. Engl.》;19971231;第36卷(第23期);第2598-2601页 *

Also Published As

Publication number Publication date
CN103880790A (zh) 2014-06-25

Similar Documents

Publication Publication Date Title
CN103880790B (zh) 一种呋喃偶联化合物的合成方法
Feng et al. Rhodium (III)-catalyzed C–H allylation of electron-deficient alkenes with allyl acetates
Xiao et al. Visible-light induced decarboxylative coupling of redox-active esters with disulfides to construct C–S bonds
CN102947000B (zh) 羧基化催化剂
Pietruszka et al. Laccase-catalyzed 3-Arylation of 3-Substituted Oxindoles.
CN104327008A (zh) 一种苯并噁唑类化合物的合成方法
Miao et al. Direct carboxylation of allylic halides with carbon dioxide in the presence of indium
Yao et al. Catalytic hydrogenation of carbonyl and nitro compounds using an [N, O]-chelate half-sandwich ruthenium catalyst
Shao et al. Zirconocene-catalyzed sequential ethylcarboxylation of alkenes using ethylmagnesium chloride and carbon dioxide
Landais et al. Free-radical carbo-oximation of olefins and subsequent radical-ionic cascades
CN105801575A (zh) 一种咪唑并[1,2-a]吡啶的合成方法
CN103224479B (zh) 一种2-芳基苯并呋喃类化合物的合成方法
CN108059610B (zh) 一种3-酰基螺环三烯酮化合物的制备方法
McGonagle et al. A three-step tandem process for the synthesis of bicyclic γ-lactams
CN110357801A (zh) 一种碘催化三组分反应合成含氮五元杂环化合物的方法
CN104211723B (zh) 乙烯基硼化试剂的合成及应用
Song et al. The use of iminopyridines as efficient ligands in the palladium (II)-catalyzed cyclization of (Z)-4′-acetoxy-2′-butenyl 2-alkynoates
Zhang et al. Application of asymmetric aminohydroxylation to heteroaromatic acrylates
Hajipour et al. Cobalt-catalyzed CH activation/CO formation: Synthesis of benzofuranones
Reddy et al. Ru-Catalyzed highly site-selective C–H bond arylation of 9-(pyrimidin-2-yl)-9 H-carbazole
Fujii et al. A novel one-pot synthesis of carbazole-1, 4-quinones through Pd-catalyzed cyclocarbonylation, desilylation and oxidation processes from 3-iodo-2-propenylindoles
WO2016197580A1 (zh) α-烷基支链取代的α-氨基酸衍生物的合成方法
CN111484436A (zh) 一种在吲哚c3位引入异戊烯基的方法
CN106916093B (zh) 一种氮杂环卡宾催化合成多取代吡咯烷酮类化合物的方法
CN107176906A (zh) 一种取代茚酮的合成方法

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: 20160824

Termination date: 20170313