4-bromo-α-iodostyrene

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 4-bromo-α-iodostyrene
• 英文别名: 1-bromo-4-(1-iodoethenyl)benzene；1-bromo-4-(1-iodovinyl)benzene；4-bromo-1-(1-iodoethenyl)benzene；1-(1-iodoethenyl)-4-bromobenzene
• 化学式: C₈H₆BrI
• 分子量: 308.944
• InChiKey: BIKHNTJAOOKHHG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  10
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  4-bromo-α-iodostyrene 在 copper(l) iodide 、 N,N-二甲基甘氨酸盐酸盐 、 sodium hydride 、 caesium carbonate 作用下， 以 1,4-二氧六环 、 N,N-二甲基甲酰胺 为溶剂， 反应 4.5h， 生成
  参考文献：
  名称：

  含环氧乙烷的叔烯酰胺的分子内亲核加成反应合成羟基化 3,4-二氢吡啶-2-酮

  摘要：

  由对甲苯磺酸在干燥乙腈中催化，含环氧乙烷的叔烯酰胺通过分子内加成进行有效环化，以中等至良好的产率生产 3-羟基-3,4-二氢吡啶-2(1H)-酮衍生物。

  DOI：

  10.1055/s-0030-1259703
• 作为产物：
  描述：

  (4-溴苯基)乙炔 在 cerium(III) chloride heptahydrate 、 sodium iodide 作用下， 以 乙腈 为溶剂， 生成 4-bromo-α-iodostyrene
  参考文献：
  名称：

  光催化氧化自由基加成合成不对称 1,4-二羰基化合物

  摘要：

  在此，我们报道了一种用于合成不对称 1,4-二羰基化合物的光催化氧化自由基加成反应。该反应利用脱硫过程产生亲电自由基，该自由基与 α-卤代烯烃相加并进一步氧化以产生 1,4-二羰基化合物。这种温和且高效的方法为已知策略提供了一种有价值的替代方法。

  DOI：

  10.1021/acs.orglett.1c02208

文献信息

• A convergent approach to (R)-Tiagabine by a regio- and stereocontrolled hydroiodination of alkynes
  作者：Giuseppe Bartoli、Roberto Cipolletti、Giustino Di Antonio、Riccardo Giovannini、Silvia Lanari、Mauro Marcolini、Enrico Marcantoni

  DOI：10.1039/c005042c

  日期：——

  The occurrence of unsaturated systems in natural products combined with the mildness and the wide range of applicability of CeCl3 promoted methodologies suggest several potential future synthetic applications within the field of total synthesis of biologically active molecules. On this concept, the use of CeCl3·7H2O–NaI system as an efficient heterogeneous promoter has been highlighted in the iodofunctionalization of carbon–carbon triple bonds. The study has shown that this method would be particularly interesting for the stereoselective formation of trisubstituted (Z)- or (E)-iodoalkenes by simply changing the nature of the solvent. The methodology has been successfully applied to the synthesis of (R)-1-[4,4-bis-(3-methyl-2-thienyl)-3-butenyl]-3-piperidinecarboxylic acid 1, named (R)-Tiagabine, which is a potent and selective γ-aminobutyric acid (GABA) uptake inhibitor with proven anticonvulsant efficacy in humans.

  不饱和体系在天然产物中的出现，以及CeCl3促进的方法所具有的温和性和广泛的适用性，提示在生物活性分子的全合成领域存在多个潜在的未来合成应用。在这个概念下，使用CeCl3·7H2O–NaI体系作为有效的异相促进剂，在碳-碳三重键的碘功能化中得到了强调。研究表明，这种方法对于立体选择性合成三取代的（Z）或（E）碘烯特别有趣，只需改变溶剂的性质。该方法已成功应用于合成（R）-1-[4,4-双-(3-甲基-2-噻吩基)-3-丁烯基]-3-哌啶甲酸1，即（R）-Tiagabine，这是一种有效且选择性的γ-氨基丁酸（GABA）摄取抑制剂，在人类中具有经过验证的抗癫痫疗效。
• Atom-Efficient Vinylic Arylations with Triarylbismuths as Substoichiometric Multicoupling Reagents under Palladium Catalysis
  作者：Maddali L. N. Rao、Deepak N. Jadhav、Varadhachari Venkatesh

  DOI：10.1002/ejoc.200900487

  日期：2009.9

  The first atom-efficient arylation of vinylic iodides was achieved by using triarylbismuths as substoichiometric multicoupling reagents under palladium catalysis. Vinylic iodides were efficiently coupled with electronically divergent triarylbismuths to furnish the corresponding arylated products in short reaction times. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

  通过在钯催化下使用三芳基铋作为亚化学计量的多偶联试剂，实现了乙烯基碘的第一个原子有效芳基化。乙烯基碘化物与电子发散的三芳基铋有效偶联，以在较短的反应时间内提供相应的芳基化产物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
• Synthesis of 2-(1-Phenylvinyl)benzofurans and 2-(1-Phenylvinyl)indoles as Antimitotic Agents by a Tandem Palladium-Assisted Coupling-Cyclization Reaction between 1-Phenylvinyl Iodides and ortho-Substituted Arylalkynes
  作者：Bret Tréguier、Evelia Rasolofonjatovo、Abdallah Hamze、Olivier Provot、Joanna Wdzieczak-Bakala、Joëlle Dubois、Jean-Daniel Brion、Mouad Alami

  DOI：10.1002/ejoc.201100540

  日期：2011.7.18

  1-phenylvinyl iodides and silylated alkynes in a one-pot reaction. After a desilylation step, the Sonogashira coupling reaction between the resulting terminal alkynes and 1-phenylvinyliodide derivatives 6 gave enyne intermediates, which underwent a 5-endo-dig cyclization to afford 2-(1-phenylvinyl) heterocycles 2 and 3 in good yields. This method provides a rapid and efficient approach to build up

  一系列功能化的 2-(1-苯基乙烯基) 苯并呋喃 2 和 2-(1-苯基乙烯基) 吲哚 3 是由 1-苯基碘化物和硅烷化炔烃在一锅反应中制备的。在脱甲硅烷基化步骤之后，所得末端炔烃和 1-苯基乙烯基碘衍生物 6 之间的 Sonogashira 偶联反应得到烯炔中间体，该中间体经过 5-endo-dig 环化，以良好的收率得到 2-（1-苯基乙烯基）杂环 2 和 3。该方法提供了一种快速有效的方法来建立具有生物学意义的基于苯并杂环的异康布他汀 A-4 类似物。在这一系列化合物中，吲哚 3o 和 3r 以微摩尔水平抑制微管蛋白组装，与 isoCA-4 相当。
• Highly regioselective hydroiodination of terminal alkynes and silylalkynes with iodine and phosphorus reagents leading to internal iodoalkenes
  作者：Shin-ichi Kawaguchi、Haruna Masuno、Motohiro Sonoda、Akihiro Nomoto、Akiya Ogawa

  DOI：10.1016/j.tet.2012.08.096

  日期：2012.11

  Markovnikov-type hydroiodination of terminal alkynes with iodine and Ph2P(O)H took place selectively to afford the corresponding internal iodoalkenes in good yields. Combination of (PhO)(2)P(O)H and Ph2P(O)OH instead of Ph2P(O)H also provided internal iodoalkenes in excellent yields. This hydroiodination is advantageous in terms of mild conditions, convenient operation, and tolerance to various functional groups. In addition, direct synthesis of internal iodoalkenes from silylalkynes was also achieved by using a mixed system of iodine and phosphorus reagents. (c) 2012 Elsevier Ltd. All rights reserved.
• Highly Selective Hydroiodation of Alkynes Using an Iodine−Hydrophosphine Binary System
  作者：Shin-ichi Kawaguchi、Akiya Ogawa

  DOI：10.1021/ol1005246

  日期：2010.5.7

  A novel hydroiodation of alkynes (1) using an iodine/hydrophosphine binary system takes place regioselectively to provide the corresponding Markovnikov-type adducts (2) in good yield. This hydroiodation is advantageous in terms of mild conditions, convenient operation, and tolerance to various functional groups.