ω-Brom-3-methoxy-styrol | 107415-80-5

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: ω-Brom-3-methoxy-styrol
• 英文别名: 1-[(E)-2-Bromovinyl]-3-methoxybenzene；1-(2-bromoethenyl)-3-methoxybenzene
• CAS: 107415-80-5
• 化学式: C₉H₉BrO
• 分子量: 213.074
• InChiKey: JHZYGPAIKZFVOS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  11
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  ω-Brom-3-methoxy-styrol 在 sodium hydroxide 作用下， 以 异丙醇 为溶剂， 反应 1.5h， 以3.37 g的产率得到(E)-1-(2-bromovinyl)-3-methoxybenzene
  参考文献：
  名称：

  镍卤化物与乙烯基溴的镍催化还原偶联制备乙烯基芳烃

  摘要：

  这项工作强调了在温和且易于操作的镍催化反应条件下，通过芳基卤化物与乙烯基溴的还原偶联来合成取代的乙烯基芳烃。广泛使用的芳基卤化物，包括杂芳族化合物和乙烯基溴化物，以中等至优异的收率生产了具有高官能团耐受性的产品。镍催化系统在两个C（sp 2）-卤化物偶合体之间显示出良好的化学选择性，从而证明了不同于其他逐步方案的机理途径。

  DOI：

  10.1002/anie.201607959
• 作为产物：
  描述：

  3-甲氧基肉桂酸 在 Oxone 、 三乙胺氢溴酸盐 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 生成 ω-Brom-3-methoxy-styrol
  参考文献：
  名称：

  Triazole-curcuminoids: A new class of derivatives for ‘tuning’ curcumin bioactivities?

  摘要：

  Curcumin is a unique blend of pharmacophores responsible for the pleiotropy of this natural pigment. In the present study we have replaced the 1,3-dicarbonyl moiety with a 1,2,3-triazole ring to furnish a new class of triazole-curcuminoids as a possible strategy to generate new compounds with different potency and selectivity compared to curcumin. We obtained a proof-of-principle library of 28 compounds tested for their cytotoxicity (SY-SY5Y and HeLa cells) and for their ability to inhibit NF-kappa B. Furthermore, we also generated 1,3-dicarbonyl curcuminoids of selected click compounds. Triazole-curcuminoids lost their ability to be Michael's acceptors, yet maintained some of the features of the parent compounds and disclosed new ones. In particular, we found that some compounds were able to inhibit NF-kappa B without showing cytotoxicity, while others, unlike curcumin, activated NF-kappa B signalling. This validates the hypothesis that click libraries can be used to investigate the biological activities of curcumin as well as generate analogs with selected features. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2015.11.044

文献信息

• Lithium Binaphtholate-Catalyzed Enantioselective Enyne Addition to Ketones: Access to Enynylated Tertiary Alcohols
  作者：Hua Cai、Jing Nie、Yan Zheng、Jun-An Ma

  DOI：10.1021/jo5005839

  日期：2014.6.20

  A new catalytic enantioselective enyne addition to ketones has been developed. In the presence of chiral lithium binaphtholate, the addition reaction proceeded smoothly to produce a series of enynylated tertiary alcohols in up to 96% yield and 94% enantiomeric excess. Convenient transformation of the adduct via Pauson–Khand cycloaddition reaction afforded the bicyclic product without detectable loss

  已经开发了一种向酮中添加新的催化对映选择性烯炔的方法。在手性联萘甲酸锂的存在下，加成反应顺利进行，从而产生一系列烯化的叔醇，产率高达96％，对映体过量达94％。通过Pauson-Khand环加成反应对加合物进行方便的转化，得到了双环产物，对映选择性没有可检测到的损失。此外，将三氟甲基酮中的催化不对称烯炔加成用于依夫韦伦类似物的合成中。
• Iron-Catalyzed Reductive Vinylation of Tertiary Alkyl Oxalates with Activated Vinyl Halides
  作者：Yang Ye、Haifeng Chen、Ken Yao、Hegui Gong

  DOI：10.1021/acs.orglett.0c00561

  日期：2020.3.6

  of vinylated all carbon quaternary centers via Fe-catalyzed cross-electrophile coupling of vinyl halides with tertiary alkyl methyl oxalates. The reaction displays excellent functional group tolerance and broad substrate scope, which allows cascade radical cyclization and vinylation to afford complex bicyclic and spiral structural motifs. The reaction proceeds via tertiary alkyl radicals, and the putative

  我们在本文中提出了一种罕见而有效的方法，用于通过卤化乙烯与草酸叔烷基甲基酯的铁催化的交亲电偶合来创建乙烯基化的所有碳季碳原子中心。该反应显示出优异的官能团耐受性和广泛的底物范围，这允许级联自由基环化和乙烯基化以提供复杂的双环和螺旋结构基序。反应通过叔烷基进行，假定的乙烯基-Br / Fe络合对于活化烯烃和实现可能的协同加成/ C-Fe形成过程至关重要。
• Stereo- and Enantioselective Benzylic C–H Alkenylation via Photoredox/Nickel Dual Catalysis
  作者：Xiaokai Cheng、Tongtong Li、Yuting Liu、Zhan Lu

  DOI：10.1021/acscatal.1c02851

  日期：2021.9.3

  molecules undergo this cross-coupling reaction smoothly to afford chiral allylic compounds in up to 93% ee and >20/1 E/Z ratio under mild reaction conditions with good functional group tolerance. A triplet-energy-transfer-inhibiting strategy is developed for the stereoselective synthesis of alkenes under visible-light photocatalysis. The coordination pattern of nickel with chiral bis-imidazoline ligand has

  报道了通过光氧化还原/镍催化的立体和对映选择性苄基 C-H 烯基化。容易获得的烷基苯和烯基溴化物，包括复杂的分子，在温和的反应条件下顺利地进行这种交叉偶联反应，以提供高达 93% ee 和 >20/1 E / Z比的手性烯丙基化合物，具有良好的官能团耐受性。开发了一种三重态能量转移抑制策略，用于在可见光光催化下立体选择性合成烯烃。基于非线性效应实验和 X 射线衍射，阐明了镍与手性双咪唑啉配体的配位模式。
• Ligand-accelerating low-loading copper-catalyzed effective synthesis of (E)-1,3-enynes by coupling between vinyl halides and alkynes performed in water
  作者：Peng Sun、Hong Yan、Linhua Lu、Defu Liu、Guangwei Rong、Jincheng Mao

  DOI：10.1016/j.tet.2013.06.063

  日期：2013.8

  The useful conjugated enynes could be easily prepared via low-loading (0.0001 mol %) copper-catalyzed coupling between vinyl halides and terminal alkynes. It is noteworthy that this reaction could be preformed in water without using any co-solvents and the desired 1,3-enynes could be obtained with good yields. In the catalytic reaction, ligand-acceleration effect was markable.

  有用的共轭烯炔可以通过乙烯基卤化物和末端炔烃之间的低负载（0.0001 mol％）铜催化的偶联容易地制备。值得注意的是，该反应可以在水中进行而无需使用任何助溶剂，并且可以良好的收率获得所需的1，3-烯炔。在催化反应中，配体促进作用是显着的。
• Palladium-catalyzed coupling reaction of 2-iodobiphenyls with alkenyl bromides for the construction of 9-(diorganomethylidene)fluorenes
  作者：Ya-Heng Zhao、Jian-Long Wang、Yun-Bing Zhou、Miao-Chang Liu、Hua-Yue Wu

  DOI：10.1039/d1ob01547h

  日期：——

  protocol for the construction of 9-(diorganomethylidene)fluorenes through palladium-catalyzed coupling reactions of 2-iodobiphenyls with alkenyl bromides has been reported. The reaction proceeds through the C–H activation/oxidative addition/reduction elimination/intramolecular Heck coupling reaction to afford a series of 9-(diorganomethylidene)fluorenes with good yields. Control experiments demonstrate that

  已经报道了通过钯催化的 2-碘联苯与烯基溴的偶联反应构建 9-（二有机亚甲基）芴的原子经济协议。该反应通过C-H活化/氧化加成/还原消除/分子内Heck偶联反应进行，以良好的收率得到一系列9-(二有机亚甲基)芴。对照实验表明，五元钯环作为关键中间体，β-H 消除作为限速步骤。