5-[(Z)-2-bromovinyl]-1,3-benzodioxole | 150357-72-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并间二氧杂环戊烯类
• 英文名称: 5-[(Z)-2-bromovinyl]-1,3-benzodioxole
• 英文别名: (Z)-β-bromo-3,4-methylenedioxystyrene；5-((Z)-2-bromovinyl)benzo[d][1,3]dioxole；(Z)-5-(2-Bromovinyl)benzo[d][1,3]dioxole；5-[(Z)-2-bromoethenyl]-1,3-benzodioxole
• CAS: 150357-72-5
• 化学式: C₉H₇BrO₂
• 分子量: 227.057
• InChiKey: SVXOJPBBVAQCRW-ARJAWSKDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  5-[(Z)-2-bromovinyl]-1,3-benzodioxole 在 N-溴代丁二酰亚胺(NBS) 作用下， 以73%的产率得到(E)-5-(2-bromovinyl)benzo[d][1,3]dioxole
  参考文献：
  名称：

  Synthesis applications of cationic aza-Cope rearrangements. Part 25. Total synthesis of Amaryllidaceae alkaloids of the 5,11-methanomorphanthridine type. Efficient total syntheses of (-)-pancracine and (.+-.)-pancracine

  摘要：

  Stereocontrolled total syntheses of the 5,11-methanomorphanthridine alkaloid pancracine in racemic (rac-1) and natural levorotatory form (1) are described. The key step is a Lewis acid-mediated aza-Cope rearrangement-Mannich cyclization reaction (9 --> 6, Scheme I).

  DOI：

  10.1021/jo00069a032
• 作为产物：
  描述：

  3,4-methylenedioxy-trans-cinnamic acid 在 溴 、 三乙胺 作用下， 以 氯仿 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.01h， 生成 5-[(Z)-2-bromovinyl]-1,3-benzodioxole
  参考文献：
  名称：

  Convenient and stereoselective synthesis of (Z)-1-bromo-1-alkenes by microwave-induced reaction

  摘要：

  (Z)-l-Bromo-l-alkenes were stereoselectively prepared in high yields in a short reaction time (0.2 1.0 min) by microwave irradiation of the corresponding 2,3-dibromoalkanoic acids in DMF in the presence of triethylamine. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(01)00595-0

文献信息

• Illuminating <i>anti</i>-hydrozirconation: controlled geometric isomerization of an organometallic species
  作者：Theresa Hostmann、Tomáš Neveselý、Ryan Gilmour

  DOI：10.1039/d1sc02454j

  日期：——

  reaction product functions as an efficient in situ generated photocatalyst. Coupling of the E-vinyl zirconium species with an alkyne unit generates a conjugated diene: this has been leveraged as a selective energy transfer catalyst to enable E → Z isomerization of an organometallic species. Through an Umpolung metal–halogen exchange process (Cl, Br, I), synthetically useful vinyl halides can be generated

  据报道，实现芳基乙炔正式反加氢锆化的一般策略是将使用 Schwartz 试剂（Cp 2 ZrHCl）的顺式加氢金属化与随后在λ = 400 nm 处的光介导几何异构化相结合。所述的机理划定禁忌-thermodynamic异构化步骤指示次要反应产物用作高效的原位产生的光催化剂。所述的联接ë与炔烃单元-乙烯基锆物质生成的共轭二烯：这已被利用作为选择性能量转移催化剂以使È → ž有机金属物种的异构化。通过Umpolung金属 - 卤素交换过程（Cl、Br、I），可以生成合成有用的乙烯基卤化物（高达Z  :  E = 90 : 10）。这个支持平台提供了一种策略，可以从简单的芳基乙炔中获取两种几何形式的亲核和亲电烯烃片段。
• Ionic Liquid–Promoted Stereoselective Synthesis of (<i>Z</i>)‐Vinyl Bromides by [bmIm]OH under Organic Solvent–Free Conditions: A Green Approach
  作者：Brindaban C. Ranu、Subhash Banerjee、Jhinuk Gupta

  DOI：10.1080/00397910701471386

  日期：2007.8.1

  Abstract A simple and easily accessible ionic liquid, 1‐butyl‐3‐methylimidazolium hydroxide ([bmIm]OH), has been demonstrated as an efficient promoter and reaction medium for the highly stereoselective synthesis of (Z)‐vinyl bromides by the debrominative decraboxylation of dibrominated α,β‐unsaturated carboxylic acids in high yields. The reaction does not require either a conventional base or an organic

  摘要 一种简单易得的离子液体，1-丁基-3-甲基咪唑鎓氢氧化物 ([bmIm]OH)，已被证明是一种有效的促进剂和反应介质，用于通过脱溴脱羧反应高立体选择性合成 (Z)-乙烯基溴。高产率的二溴化 α,β-不饱和羧酸。该反应不需要常规碱或有机溶剂。
• An Efficient Microwave-Promoted Route to (Z)-Stilbenes from trans-Cinnamic Acids: Synthesis of Combretastatin A-4 and Analogues
  作者：Sylvain Rault、Marc-Antoine Bazin、Marie Jouanne、Hussein El-Kashef

  DOI：10.1055/s-0029-1217981

  日期：2009.10

  cis-Stilbenes were synthesized from trans-cinnamic acids, involving ethylenic-bond bromination and a subsequent one-pot microwave-promoted stereoselective debrominative decarboxylation-Suzuki cross-coupling strategy. This sequence represents a useful way to prepare a variety of combretastatin A-4 derivatives.

  顺式二苯乙烯由反式肉桂酸合成，涉及烯键溴化和随后的一锅微波促进立体选择性脱溴脱羧-铃木交叉偶联策略。该序列代表了制备多种考布他汀 A-4 衍生物的有用方法。
• Synthesis of (Z)-1-bromo-1-alkenes and terminal alkynes from anti-2,3-dibromoalkanoic acids by microwave-induced reaction
  作者：Chunxiang Kuang、Qing Yang、Hisanori Senboku、Masao Tokuda

  DOI：10.1016/j.tet.2005.02.043

  日期：2005.4

  (Z)-1-Bromo-1-alkenes were stereoselectively prepared in high yields in a short reaction time by microwave irradiation of the corresponding anti-2,3-dibromoalkanoic acids in a Et3N/DMF system. A one-pot synthesis of terminal alkynes and enynes from 2,3-dibromoalkanoic acids were also developed by microwave-induced reaction. (c) 2005 Elsevier Ltd. All rights reserved.
• Stereoselective Synthesis of <i>Z</i> Alkenyl Halides via Julia Olefination
  作者：Marie-Eve Lebrun、Paul Le Marquand、Carl Berthelette

  DOI：10.1021/jo052370h

  日期：2006.3.1

  Julia olefination between alpha-halomethyl sulfones and a variety of aldehydes afforded alkenyl halides in good to excellent yields with high E/Z stereo selectivities. Sulfones were readily prepared in two or three steps from commercially available reagents in good yields. Optimization revealed that the nature of the Z solvent, the base, and the additive were crucial to obtain the desired alkenyl halides.