2,3,5-tribromobenzofuran | 64150-67-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 2,3,5-tribromobenzofuran
• 英文别名: 2,3,5-tribromo-benzofuran；2,3,5-Tribrom-benzofuran；2,3,5-Tribromo-1-benzofuran
• CAS: 64150-67-0
• 化学式: C₈H₃Br₃O
• 分子量: 354.823
• InChiKey: VRKBYKVOXLZPHF-UHFFFAOYSA-N

物化性质

• 熔点：
  101 °C
• 沸点：
  353.7±37.0 °C(Predicted)
• 密度：
  2.290±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,3,5-tribromobenzofuran 在 (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride 、 sodium tetrahydroborate 、 四甲基乙二胺 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 以84%的产率得到3,5-二溴苯并呋喃
  参考文献：
  名称：

  NaBH4-TMEDA and a palladium catalyst as efficient regio- and chemoselective system for the hydrodehalogenation of halogenated heterocycles

  摘要：

  DOI：

  10.1016/j.molcata.2014.06.012
• 作为产物：
  描述：

  2,3,5-tribromo-2,3-dihydrobenzofuran 在 氢氧化钾 、 溴 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 19.5h， 生成 2,3,5-tribromobenzofuran
  参考文献：
  名称：

  Bach, Thorsten; Bartels, Marc, Synthesis, 2003, # 6, p. 925 - 939

  摘要：

  DOI：

文献信息

• 2,3-Disubstituted and 2,3,5-Trisubstituted Benzofurans by Regioselective Pd-Catalyzed Cross-coupling Reactions; a Short Synthesis of Eupomatenoid-15
  作者：Thorsten Bach、Marc Bartels

  DOI：10.1055/s-2001-16052

  日期：——

  2,3-Dibromobenzofuran (1) and 2,3,5-tribromobenzofuran (2) undergo regioselective Sonogashira- and Negishi-type cross-coupling reactions at the 2-position. Subsequent substitution reactions at C-3 are possible for the cross-coupling products obtained from compound 1. A regioselective functionalization of the 3,5-dibromobenzofurans derived from substrate 2 was achieved by an halogen-metal exchange which occurred selectively at the 3-position. In a conclusive reaction step cross-coupling reactions at C-5 were used to build up 2,3,5-trisubstituted benzofurans. As an example, the synthesis of eupomatenoid-15 (8) is described.

  2,3-二溴苯并呋喃（1）和2,3,5-三溴苯并呋喃（2）在2-位点进行区域选择性的Sonogashira型和Negishi型交叉偶联反应。从化合物1得到的交叉偶联产物在C-3位可以进行后续取代反应。通过对2来自底物2的3,5-二溴苯并呋喃进行区域选择性功能化，实现了在3-位点选择性发生卤素-金属交换。在最终的反应步骤中，利用C-5位的交叉偶联反应构建了2,3,5-三取代的苯并呋喃。作为一个例子，描述了eupomatenoid-15（8）的合成。
• Synthesis of Arylated Benzofurans by RegioselectiveSuzuki-Miyaura Cross-Coupling Reactions of 2,3-Dibromobenzofurans- and 2,3,5-Tribromobenzofurans
  作者：M. Hussain、N. Thai Hung、N. Abbas、R. A. Khera、I. Malik、T. Patonay、N. Kelzhanova、Z. A. Abilov、A. Villinger、P. Langer

  DOI：10.1002/jhet.2083

  日期：2015.3

  Arylated benzofurans were prepared by regioselective Suzuki–Miyaura cross‐coupling reactions of 2,3‐dibromobenzofuran. The reactions proceeded with very good site‐selectivity in favor of the more electron deficient position 2. The Suzuki–Miyaura reactions of 2,3,5‐tribromobenzofuran also proceeded in favor of position 2.

  通过2,3-二溴苯并呋喃的区域选择性Suzuki-Miyaura交叉偶联反应制备了丙烯酸化的苯并呋喃。该反应以非常好的位点选择性进行，有利于电子缺乏的第2位。2,3,5-三溴苯并呋喃的Suzuki-Miyaura反应也有利于第2位。
• Rapid regio- and multi-coupling reactivity of 2,3-dibromobenzofurans with atom-economic triarylbismuths under palladium catalysis
  作者：Maddali L N Rao、Jalindar B Talode、Venneti N Murty

  DOI：10.3762/bjoc.12.195

  日期：——

  A regio- and chemoselective cross-coupling study using 2,3-dibromobenzofurans and 2,3,5-tribromobenzofuran was achieved with sub-stoichiometric loadings of triarylbismuths as atom-economic reagents under Pd-catalyzed conditions. As part of this study, various 2,3-diaryl- and 2,3,5-triarylbenzofuran products were obtained in high yields, involving one-pot operations and short reaction times.

  使用亚化学和选择性交叉偶联研究，利用2,3-二溴苯并呋喃和2,3,5-三溴苯并呋喃，采用亚化学试剂三芳基铋的亚化学负载，在Pd催化条件下实现。在这项研究的一部分中，通过一锅操作和短反应时间，得到了各种2,3-二芳基和2,3,5-三芳基苯并呋喃产品，收率高。
• Synthesis of eupomatenoids by three consecutive transition metal-catalyzed cross-coupling reactions
  作者：Thorsten Bach、Marc Bartels

  DOI：10.1016/s0040-4039(02)02287-6

  日期：2002.12

  Six different eupomatenoids (1a-c, 1f-h) were prepared from 2,3,5-tribroinobenzofuran (2) in a concise and high-yielding synthetic sequence. The overall yields vary between 29 and 60% over four to six steps. Key to the success of the syntheses is the high regioselectivity achieved in three Pd(0)- and Ni(0)-catalyzed cross-coupling reactions which were conducted consecutively. The order of substitution at the benzofuran nucleus is C-2, C-5 and C-3. (C) 2002 Elsevier Science Ltd. All rights reserved.
• Efficient synthesis of functionalized dibenzofurans by domino ‘twofold Heck/6π-electrocyclization’ reactions of 2,3-di- and 2,3,5-tribromobenzofuran
  作者：Munawar Hussain、Nguyen Thai Hung、Peter Langer

  DOI：10.1016/j.tetlet.2009.04.069

  日期：2009.7

  Functionalized dibenzofurans were prepared based on domino 'twofold Heck/6 pi-electrocyclization' reactions of 2,3-di- and 43,5-tribromobenzofuran. (C) 2009 Elsevier Ltd. All rights reserved.

表征谱图