(Z)-4-(2-bromovinyl)-1,1'-biphenyl | 357914-41-1

• 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: (Z)-4-(2-bromovinyl)-1,1'-biphenyl
• 英文别名: 1-[(Z)-2-bromoethenyl]-4-phenylbenzene
• CAS: 357914-41-1
• 化学式: C₁₄H₁₁Br
• 分子量: 259.145
• InChiKey: VFVRPOOBPFHYDE-KHPPLWFESA-N

物化性质

• 沸点：
  361.6±21.0 °C(Predicted)
• 密度：
  1.347±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• 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：

  (Z)-4-(2-bromovinyl)-1,1'-biphenyl 在 四丁基氟化铵 、 叔丁基锂 作用下， 生成 [4-[(Z)-2-(4-phenylphenyl)ethenyl]phenyl]methanol
  参考文献：
  名称：

  Precipiton strategies applied to the isolation of α-substituted β-ketoesters

  摘要：

  Diaryl alkene 1Z is a 'precipiton', a protecting group that allows reaction products to be isolated by simple filtration. Here we illustrate the use of this protecting group for the preparation and isolation, without distillation or chromatography, of pure cc-substituted beta -ketoesters. The precipiton 1Z was prepared in 43% overall yield. It is anticipated that development of precipiton-based syntheses will provide a new alternative for automated reaction product isolation that may be useful for bench-scale and process-scale chemical preparations. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(01)00726-2
• 作为产物：
  描述：

  1-(2,2-二溴乙烯基)-4-苯基苯 在 四(三苯基膦)钯 三正丁基氢锡 作用下， 以 二氯甲烷 为溶剂， 生成 (Z)-4-(2-bromovinyl)-1,1'-biphenyl
  参考文献：
  名称：

  Precipiton strategies applied to the isolation of α-substituted β-ketoesters

  摘要：

  Diaryl alkene 1Z is a 'precipiton', a protecting group that allows reaction products to be isolated by simple filtration. Here we illustrate the use of this protecting group for the preparation and isolation, without distillation or chromatography, of pure cc-substituted beta -ketoesters. The precipiton 1Z was prepared in 43% overall yield. It is anticipated that development of precipiton-based syntheses will provide a new alternative for automated reaction product isolation that may be useful for bench-scale and process-scale chemical preparations. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(01)00726-2

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。
• H-β-zeolite catalyzed synthesis of β-bromostyrenes from styrene bromohydrins
  作者：Venkatanarayana Pappula、Ramachandra Reddy Donthiri、Chandra Mohan Darapaneni、Adimurthy Subbarayappa

  DOI：10.1016/j.tetlet.2014.01.118

  日期：2014.3

  Synthesis of β-bromostyrenes from styrene bromohydrins using H-β-zeolite as catalyst under moderate conditions is reported. The catalyst could be regenerated and reused up to three consecutive cycles.

  报道了在中等条件下使用H-β-沸石作为催化剂由苯乙烯溴代醇合成β-溴苯乙烯的方法。该催化剂可以再生并重复使用多达三个连续循环。
• Regio- and stereoselective synthesis of bromoalkenes by homolytic hydrobromination of alkynes with hydrogen bromide
  作者：Wataru Kumaki、Hidenori Kinoshita、Katsukiyo Miura

  DOI：10.1016/j.tet.2022.132687

  日期：2022.3

  hydrobromination of terminal and internal alkynes with a commercially available solution of hydrogen bromide in acetic acid has been investigated for regio- and stereoselective synthesis of bromoalkenes. Under an aerobic atmosphere at room temperature, the reaction of ethynylarenes with a small excess of HBr efficiently gave (2-bromoethenyl)arenes with good to high E-selectivity. (Alk-1-ynyl)arenes, or internal

  已经研究了用市售的溴化氢在乙酸中的溶液对末端和内部炔烃进行均裂氢溴化反应，以用于溴代烯烃的区域选择性和立体选择性合成。在室温下的有氧气氛下，乙炔基芳烃与少量过量的 HBr 反应有效地产生了具有良好至高E选择性的 (2-溴乙烯基) 芳烃。(Alk-1-ynyl) 芳烃或在 sp-碳上同时带有苯基和烷基的内部炔烃也经历了空气引发的溴化氢反应，在使用半当量 HBr 的动力学条件下表现出高Z选择性。
• Palladium-Catalyzed Vinylation of Cyclopentenes with Inverted <i>Z,E</i>-Isomerism of Vinylic Substrates
  作者：Chao-Ting Yen、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu

  DOI：10.1021/acs.orglett.2c01131

  日期：2022.5.13

  efficiently produce the coupled vinyl cyclopentenes with excellent regio- and stereoselectivity is reported. Typically, a Pd-catalyzed reaction of 2-(cyclopent-2-en-1-yl)-N-tosylacetamide (1a) with (E)-styryl bromides gave cis-2-((Z)-styryl)cyclopent-3-en-1-yl-N-tosylacetamide (3e), an allylic substitution product. Interestingly, we have found that the E,Z-stereochemistry of vinylic substrates is inverted in

  报道了一种钯促进的 Mizoroki-Heck 型反应，该反应采用导向基团策略有效地生产具有优异区域和立体选择性的偶联乙烯基环戊烯。通常，Pd 催化的 2-(cyclopent-2-en-1-yl) -N - tosylacetamide ( 1a ) 与 ( E )-styryl bromides 的反应得到cis -2-((( Z )-styryl)cyclopent-3 -en-1- yl- N - tosylacetamide ( 3e )，一种烯丙基取代产物。有趣的是，我们发现乙烯基底物的E、Z立体化学在这些产品中是相反的。讨论了这种催化反应的机理。
• Chromium-catalyzed olefination of arylaldehydes with haloforms assisted by 2,3,5,6-tetramethyl-<i>N</i>,<i>N</i>′-bis(trimethylsilyl)-1,4-dihydropyrazine
  作者：Kohei Nishi、Hayato Tsurugi、Kazushi Mashima

  DOI：10.1039/d2cc06104j

  日期：——

  Chromium-catalyzed olefination of arylaldehydes with haloforms was achieved using 2,3,5,6-tetramethyl-N,N′-bis(trimethylsilyl)-1,4-dihydropyrazine (1a) as an organic reducing agent, giving β-halostyrene derivatives in a trans-selective manner. The reaction required no metal powders, such as zinc and manganese, as reductants, thereby minimizing metal-based reaction waste.

  以2,3,5,6-四甲基-N , N'-双(三甲基甲硅烷基)-1,4-二氢吡嗪( 1a )为有机还原剂,铬催化卤代芳醛烯化,得到β-卤代苯乙烯衍生物以反式选择的方式。该反应不需要锌和锰等金属粉末作为还原剂，从而最大限度地减少了金属基反应废物。