(E)-2-cinnamyl-1,3,4-trifluorobenzene | 1616842-51-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 直链 1,3-二芳基丙烷
• 英文名称: (E)-2-cinnamyl-1,3,4-trifluorobenzene
• 英文别名: 2-cinnamyl-1,3,4-trifluorobenzene
• CAS: 1616842-51-3
• 化学式: C₁₅H₁₁F₃
• 分子量: 248.248
• InChiKey: MFCPLLYBTBHMJH-QPJJXVBHSA-N

物化性质

• 沸点：
  300.5±37.0 °C(predicted)
• 密度：
  1.218±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.36
• 重原子数：
  18.0
• 可旋转键数：
  3.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为产物：
  描述：

  cinnamyl 2,3,6-trifluorobenzoate 在 tris-(dibenzylideneacetone)dipalladium(0) 、 三对苯甲基膦 作用下， 以 1,4-二氧六环 为溶剂， 反应 24.0h， 以90%的产率得到(E)-2-cinnamyl-1,3,4-trifluorobenzene
  参考文献：
  名称：

  Allylarenes的合成通过烯丙基苯甲酸酯催化脱羧

  摘要：

  AbstractA catalyst system consisting of the palladium(0) complex Pd2(dba)3 and tri(p‐tolyl)phosphine was found to efficiently promote the decarboxylation of allyl benzoates with formation of allylarenes. This catalytic CO activation followed by extrusion of carbon dioxide and CC bond formation represents a sustainable alternative to traditional waste‐intensive cross‐couplings. The scope of the transformation includes allyl and cinnamyl esters of various ortho‐substituted benzoic acids. For particularly activated substrates, the palladium catalyst can optionally be replaced by an inexpensive nickel complex.magnified image

  DOI：

  10.1002/adsc.201400624

文献信息

• Palladium-Catalyzed Direct C–H Allylation of Electron-Deficient Polyfluoroarenes with Alkynes
  作者：Jun Zheng、Bernhard Breit

  DOI：10.1021/acs.orglett.8b00393

  日期：2018.4.6

  A palladium-catalyzed intermolecular direct C–H allylation of polyfluoroarenes with alkynes is reported. Unlike classic hydroarylation reactions, alkynes are used as allylic electrophile surrogates in this direct aromatic C–H allylation. As an atom-economic and efficient method, various linear allylated fluoroarenes were synthesized from two simple and easy-to-access feedstocks in good to excellent

  据报道，钯催化炔烃与多氟芳烃进行分子间直接CH-H烯丙基化反应。与经典的氢芳基化反应不同，炔烃在这种直接的芳族C–H烯丙基化反应中被用作烯丙基亲电子替代物。作为一种原子经济有效的方法，从两种简单易用的原料以良好到极好的收率以及区域和立体选择性合成了各种线性烯丙基化氟代芳烃。
• [Cu(NHC)]-Catalyzed C−H Allylation and Alkenylation of both Electron-Deficient and Electron-Rich (Hetero)arenes with Allyl Halides
  作者：Weilong Xie、Sukbok Chang

  DOI：10.1002/anie.201510180

  日期：2016.1.26

  a [Cu(NHC)] (NHC=N‐heterocyclic carbene) catalyst is disclosed for the efficient C−H allylation of polyfluoroarenes using allyl halides in benzene at room temperature. The same catalyst system also promotes an isomerization‐induced alkenylation of initially the generated allyl arenes when the reaction is run in tetrahydrofuran. Significantly, not only electron‐deficient but also electron‐rich (hetero)arenes

  公开了[Cu（NHC）]（NHC = N-杂环卡宾）催化剂的新反应性，用于在室温下使用烯丙基卤化物在苯中进行多氟芳烃的高效CH烯丙基化。当反应在四氢呋喃中进行时，相同的催化剂体系还促进了最初生成的烯丙基芳烃的异构化诱导的烯基化。值得注意的是，不仅缺电子的芳烃而且富电子的（杂）芳烃都经历了这种双键迁移过程，从而导致了烯基化产物。本系统具有温和的反应条件，相对于芳烃底物和烯丙基卤化物反应物的广泛范围，良好的官能团耐受性和高立体选择性。
• Palladium-catalyzed aerobic oxidative allylic C–H arylation of alkenes with polyfluorobenzenes
  作者：Huanfeng Jiang、Wanfei Yang、Huoji Chen、Jianxiao Li、Wanqing Wu

  DOI：10.1039/c4cc02023e

  日期：——

  An aerobic oxidative cross-coupling reaction of alkenes with polyfluorobenzenes, through palladium-catalyzed allylic C-H activation, is reported. This attractive route provides a new way to forge allylic C-C bonds of valuable products, in good yields, with high regioselectivity.

  据报道，通过钯催化的烯丙基CH活化，烯烃与多氟苯的需氧氧化交叉偶联反应。这一诱人的途径提供了一种新方法，可以以高收率和高区域选择性来锻造有价值产品的烯丙基CC键。