ethyl 3,3-dibromo-2-phenylacrylate | 632358-70-4

• 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: ethyl 3,3-dibromo-2-phenylacrylate
• 英文别名: Ethyl 3,3-dibromo-2-phenylprop-2-enoate
• CAS: 632358-70-4
• 化学式: C₁₁H₁₀Br₂O₂
• 分子量: 334.007
• InChiKey: JBNAACFDFHSUNR-UHFFFAOYSA-N

物化性质

• 沸点：
  340.8±42.0 °C(Predicted)
• 密度：
  1.700±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  ethyl 3,3-dibromo-2-phenylacrylate 在 异丙基氯化镁 作用下， 以 乙醚 为溶剂， 反应 15.0h， 以45%的产率得到ethyl 3-bromo-2-phenylacrylate
  参考文献：
  名称：

  连续的烯醇化和烯基化策略单取代多组分合成高取代度的α-吡喃酮

  摘要：

  三取代的α-吡喃酮通过Pd催化的三组分单瓶操作，通过α-芳基化，随后的α-烯基化，烯烃异构化和二烯酸酯内酯化而获得。在温和条件下，各种偶联组分可提供高达93％的吡喃酮分离产率，并能完全控制区域选择性。在该路径的三个步骤中都发现了金属依赖性。通过进一步的转化证明了吡喃酮产品的效用，进一步的转化提供了对聚芳族化合物的方便使用，展现出广泛的分子多样性。

  DOI：

  10.1021/acs.orglett.6b02969
• 作为产物：
  描述：

  (1Z)-2-偶氮基-1-乙氧基-3-氧代-3-苯基-1-丙烯-1-醇 在 tris(triphenylphosphine)ruthenium(II) chloride 、 草酰溴 作用下， 以 氟苯 为溶剂， 反应 10.0h， 以45%的产率得到ethyl 3,3-dibromo-2-phenylacrylate
  参考文献：
  名称：

  钌（II）催化的重氮二羰基化合物制备各种α，β-和β，β-二卤代烯酮的方案

  摘要：

  AbstractEfficient one‐step syntheses of α,β‐ and β,β‐dihaloenones were achieved by ruthenium(II)‐catalyzed reactions between cyclic or acyclic diazodicarbonyl compounds and oxalyl chloride or oxalyl bromide in moderate to good yields. This methodology offers several significant advantages, which include ease of handling, mild reaction conditions, one‐step reaction, and the use of an effective and non‐toxic catalyst. The synthesized compounds were further transformed into highly functionalized novel molecules bearing aromatic rings on the enone moiety using the Suzuki reaction.magnified image

  DOI：

  10.1002/adsc.201400348

文献信息

• Preparation of 2,3,3-Triarylacrylic Acid Esters Using Suzuki–Miyaura Coupling Reactions
  作者：Normand Voyer、Sébastien Cardinal

  DOI：10.1055/s-0035-1560419

  日期：——

  esters, a class of 1,2,2-triarylethene compounds with an α,β-unsaturated ester functionality. Our approach requires the preparation of a gem-dibromoalkene precursor from an α-keto ester, followed by the installation of two aryl groups by Suzuki–Miyaura coupling reactions on the two C–Br bonds. Many 2,3,3-triarylacrylic acid esters with one, two, or three different aryl groups were obtained with complete

  摘要 我们在这里报告了一种生产2,3,3-三芳基丙烯酸酯的新策略，该酯是一类具有α，β-不饱和酯官能度的1,2,2-三芳基乙烯化合物。我们的方法要求由α-酮基酯制备宝石-二溴烯烃前体，然后通过Suzuki-Miyaura偶联反应在两个C-Br键上安装两个芳基。在大多数情况下，获得了具有1、2或3个不同芳基的许多2,3,3-三芳基丙烯酸酯。 我们在这里报告了一种生产2,3,3-三芳基丙烯酸酯的新策略，该酯是一类具有α，β-不饱和酯官能度的1,2,2-三芳基乙烯化合物。我们的方法要求由α-酮基酯制备宝石-二溴烯烃前体，然后通过Suzuki-Miyaura偶联反应在两个C-Br键上安装两个芳基。在大多数情况下，获得了具有1、2或3个不同芳基的许多2,3,3-三芳基丙烯酸酯。
• Stereoselective Preparationof Functionalized Unsaturated Lactones and Esters via FunctionalizedMagnesium Carbenoids
  作者：Paul Knochel、Viet Anh Vu、Ilan Marek

  DOI：10.1055/s-2003-41035

  日期：——

  The reaction of β,β-dibromo or diiodo unsaturatedesters with i-PrMgCl (1 equivalent) indiethyl ether allows the generation of functionalized alkenylmagnesiumcarbenoids which react with retention of configuration with variouselectrophiles providing polyfunctionalized unsaturated esters andlactones. By using two equivalents of i-PrMgCl,a 1,2-migration with retention of configuration occurs in diethylether allowing a new synthesis of tetrasubstituted esters and lactones.

  在二乙醚中，β,β-二溴或二碘不饱和酯与i-PrMgCl（1当量）反应，可以生成官能化的烯基镁卡宾，这些卡宾以构型保留的方式与各种亲电试剂反应，生成多官能化的不饱和酯和内酯。通过使用两当量的i-PrMgCl，在二乙醚中会发生构型保留的1,2-迁移，从而实现新型四取代酯和内酯的合成。
• Rapid Bis-Coupling Reactivity with Triarylbismuth Reagents: Synthesis of Structurally Diverse Scaffolds and Step-economic Convergent Synthesis of Quebecol
  作者：Maddali L. N. Rao、Venneti N. Murty、Sachchida Nand

  DOI：10.1002/ejoc.201901830

  日期：2020.3.22

  The cross‐coupling study of gem‐dibromoesters with triarylbismuths furnished a variety of multi‐functional trisubstituted acrylates embedded with aryl, alkene and alkyne scaffolds in high yields under palladium catalysis. Further, the established method was applied in the step‐economic and convergent synthesis of quebecol natural product in good yield.

  宝石二溴酸酯与三芳基铋的交叉偶联研究提供了在钯催化下高产率嵌入芳基，烯烃和炔烃骨架的多种多功能三取代丙烯酸酯。此外，已建立的方法被用于步伐经济和收敛合成高品质的魁北克天然产物。
• Single-Flask Multicomponent Synthesis of Highly Substituted α-Pyrones via a Sequential Enolate Arylation and Alkenylation Strategy
  作者：Michael Grigalunas、Olaf Wiest、Paul Helquist

  DOI：10.1021/acs.orglett.6b02969

  日期：2016.11.4

  Trisubstituted α-pyrones are obtained by a Pd-catalyzed three-component, single-flask operation via an α-arylation, subsequent α-alkenylation, alkene isomerization, and dienolate lactonization. A variety of coupling components under mild conditions afforded isolated yields of up to 93% of the pyrones with complete control of regioselectivity. Metal dependence was noted for three of the steps of the

  三取代的α-吡喃酮通过Pd催化的三组分单瓶操作，通过α-芳基化，随后的α-烯基化，烯烃异构化和二烯酸酯内酯化而获得。在温和条件下，各种偶联组分可提供高达93％的吡喃酮分离产率，并能完全控制区域选择性。在该路径的三个步骤中都发现了金属依赖性。通过进一步的转化证明了吡喃酮产品的效用，进一步的转化提供了对聚芳族化合物的方便使用，展现出广泛的分子多样性。
• Ruthenium(II)-Catalyzed Protocol for Preparation of Diverse α,β- and β,β-Dihaloenones from Diazodicarbonyls
  作者：Krishna Bahadur Somai Magar、Yong Rok Lee

  DOI：10.1002/adsc.201400348

  日期：2014.11.3

  AbstractEfficient one‐step syntheses of α,β‐ and β,β‐dihaloenones were achieved by ruthenium(II)‐catalyzed reactions between cyclic or acyclic diazodicarbonyl compounds and oxalyl chloride or oxalyl bromide in moderate to good yields. This methodology offers several significant advantages, which include ease of handling, mild reaction conditions, one‐step reaction, and the use of an effective and non‐toxic catalyst. The synthesized compounds were further transformed into highly functionalized novel molecules bearing aromatic rings on the enone moiety using the Suzuki reaction.magnified image