(4,4-dibromobut-3-en-1-ynyl)benzene | 181214-43-7

• 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: (4,4-dibromobut-3-en-1-ynyl)benzene
• 英文别名: 1,1-dibromo-4-phenyl-1-buten-3-yne；Benzene, (4,4-dibromo-3-buten-1-ynyl)-；4,4-dibromobut-3-en-1-ynylbenzene
• CAS: 181214-43-7
• 化学式: C₁₀H₆Br₂
• 分子量: 285.966
• InChiKey: LVUBIZYRGOLKTP-UHFFFAOYSA-N

物化性质

• 沸点：
  263.1±40.0 °C(Predicted)
• 密度：
  1.79±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  12
• 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：

  (4,4-dibromobut-3-en-1-ynyl)benzene 在 正丁基锂 、 potassium carbonate 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 为溶剂， 反应 20.5h， 生成 7-苯基-2,4,6-庚三炔-1-醇
  参考文献：
  名称：

  Highly Efficient and Selective Synthesis of Conjugated Triynes and Higher Oligoynes of Biological and Materials Chemical Interest via Palladium-Catalyzed Alkynyl−Alkenyl Coupling

  摘要：

  Iteration of a Pd-catalyzed reaction of alkynyl- and oligoynylzincs with (E)-ICH-CHCI followed by metalation-termination with electrophiles(E) has provided a linear route to conjugated tri- and tetraynes, and Pd-catalyzed monoalkynylation of 1,1-dibromoenynes accompanied by dehydrobromination has provided a convergent route to conjugated tri-, tetra-, and pentaynes. Both display unprecedented high efficiency and selectivity.

  DOI：

  10.1021/ol0623825
• 作为产物：
  描述：

  苯丙炔醛 在 triphenylphosphine monolith functionalized with carbon tetrabromide 作用下， 以 二氯甲烷 为溶剂， 以83%的产率得到(4,4-dibromobut-3-en-1-ynyl)benzene
  参考文献：
  名称：

  The application of a monolithic triphenylphosphine reagent for conducting Ramirez gem-dibromoolefination reactions in flow

  摘要：

  报道了在流动化学技术中应用单体三苯基膦进行Ramirez的gem-二溴烯化反应。通过仅去除溶剂而无需进一步离线纯化，合成了多种高纯度和优良产率的gem-二溴化合物。还可以使用相同的单体进行Appel反应，并讨论了两种反应机制之间的关系。

  DOI：

  10.3762/bjoc.9.207

文献信息

• Horner-Wadsworth-Emmons Modification for Ramirez <i>gem-</i>Dibromoolefination of Aldehydes and Ketones Using P(O<i>i</i>-Pr)₃
  作者：Mark Lautens、Yuan-Qing Fang、Olga Lifchits

  DOI：10.1055/s-2008-1032045

  日期：2008.2

  A simple procedure for the use of triisopropylphosphite in the Ramirez olefination is described. This reagent is equally or more reactive than PPh3 toward aldehydes and ketones in the gem-dibromoolefination of aldehydes and ketones. Under the reaction conditions, an α-bromoketone gave a novel tribromomethyl-substituted oxirane product in good yield. The substrate-dependent nature of this reaction suggests that this Horner-Wadsworth-Emmons equivalent of the Ramirez gem-dibromoolefination reaction proceeds through an ionic mechanism.

  介绍了在Ramirez烯化反应中使用三异丙基亚磷酸酯的一个简单程序。在醛和酮的偕二溴烯化反应中，该试剂对醛和酮的反应性等同或高于三苯基膦。在反应条件下，α-溴酮以良好产率生成了一种新型三溴甲基取代的环氧乙烷产物。这一反应的底物依赖性质表明，Ramirez偕二溴烯化反应的Horner-Wadsworth-Emmons等效过程是通过离子机制进行的。
• Formation of Quaternary Stereogenic Centers by NHC-Cu-Catalyzed Asymmetric Conjugate Addition Reactions with Grignard Reagents on Polyconjugated Cyclic Enones
  作者：Matthieu Tissot、Daniele Poggiali、Hélène Hénon、Daniel Müller、Laure Guénée、Marc Mauduit、Alexandre Alexakis

  DOI：10.1002/chem.201200502

  日期：2012.7.9

  The copper‐catalyzed conjugate addition of various Grignard reagents to polyconjugated enones (dienone and enynone derivatives) is reported. The catalyst system, composed of copper triflate and an NHC ligand, led to the unusual selective formation of the 1,4‐addition products. This reaction allows for the creation of all‐carbon chiral quaternary centers with enantiomeric excesses up to 99 %. The remaining

  据报道，各种格氏试剂在铜催化下将共轭加成物加到共轭烯酮（二烯酮和烯酮衍生物）上。由三氟甲磺酸铜和NHC配体组成的催化剂体系导致1,4加成产物的异常选择性形成。该反应可以创建对映异构体过量高达99％的全碳手性四元中心。1,4加合物上剩余的不饱和基团使您可以进行有价值的合成转化。
• Tellurium-promoted stereoselective hydrodebromination of 1,1-dibromoalkenes: synthesis of (E)-bromoalkenes
  作者：Gelson Perin、Angelita M. Barcellos、Thiago J. Peglow、Patrick C. Nobre、Roberta Cargnelutti、Eder J. Lenardão、Francesca Marini、Claudio Santi

  DOI：10.1039/c6ra24295b

  日期：——

  We describe herein an efficient and simple method to the stereoselective hydrodebromination of 1,1-dibromoalkenes by using a catalytic amount of the nucleophilic species of tellurium, generated in situ by the...

  我们在本文中描述了一种有效而简单的方法，该方法通过使用催化量的碲亲核物质（由金属原位生成）来对1,1-二溴烯烃进行立体选择性加氢脱溴。
• A Tandem Oxidation Procedure for the Conversion of Alcohols into 1,1-Dibromoalkenes
  作者：Richard J. Taylor、Steven A. Raw、Mark Reid、Estelle Roman

  DOI：10.1055/s-2004-820027

  日期：——

  A practical and concise route to dibromoalkenes directly from activated alcohols in good to excellent yields using a new Tandem Oxidation Procedure (TOP) is reported. We also describe the use of these dibromoalkenes as intermediates in a one-pot route to 4,5-dihydro-1H-imidazoles and in the synthesis of bromoalkynes through MTBD-induced elimination.

  报道了使用新的串联氧化程序 (TOP) 直接从活化的醇中获得二溴烯烃的实用且简洁的路线，产率很高。我们还描述了这些二溴烯烃作为中间体的用途，用于 4,5-二氢-1H-咪唑的一锅法以及通过 MTBD 诱导的消除合成溴炔。
• One-pot conversion of activated alcohols into 1,1-dibromoalkenes and terminal alkynes using tandem oxidation processes with manganese dioxide
  作者：Ernesto Quesada、Steven A. Raw、Mark Reid、Estelle Roman、Richard J.K. Taylor

  DOI：10.1016/j.tet.2005.12.077

  日期：2006.7

  Approaches to the preparation of C1-homologated dibromoalkenes and terminal alkynes from activated alcohols using one-pot tandem oxidation processes (TOPs) with manganese dioxide are outlined. The conversion of alcohols into dibromoalkenes is described using dibromomethyltriphenylphosphonium bromide and the formation of terminal alkynes was achieved via a sequential one-pot, two-step process utilising

  概述了使用一锅串联氧化法（TOP）和二氧化锰从活化的醇制备C 1均一的二溴代烯烃和末端炔烃的方法。描述了使用溴化二溴甲基三苯基phosph将醇类转化为二溴代烯烃，末端炔烃的形成是通过使用Bestmann-Ohira试剂的顺序一锅两步工艺实现的。