ethyl (Z)-4,4,4-trifluoro-3-phenylbut-2-enoate | 56210-75-4

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 肉桂酸及其衍生物
• 英文名称: ethyl (Z)-4,4,4-trifluoro-3-phenylbut-2-enoate
• 英文别名: (Z)-ethyl 4,4,4-trifluoro-3-phenylbut-2-enoate；ethyl 4,4,4-trifluoro-3-phenylbut-2-enoate；ethyl (2Z)-3-trifluoromethyl-3-phenylprop-2-enoate
• CAS: 56210-75-4
• 化学式: C₁₂H₁₁F₃O₂
• 分子量: 244.213
• InChiKey: SNOHGJYJJUSAKS-NTMALXAHSA-N

物化性质

• 沸点：
  286.4±40.0 °C(Predicted)
• 密度：
  1.202±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  ethyl (Z)-4,4,4-trifluoro-3-phenylbut-2-enoate 在 维生素 B2 作用下， 以 乙腈 为溶剂， 反应 24.0h， 以100%的产率得到ethyl (E)-4,4,4-trifluoro-3-phenylbut-2-enoate
  参考文献：
  名称：

  A Bio-Inspired, CatalyticE→ZIsomerization of Activated Olefins

  摘要：

  Herein, Nature's flavin-mediated activation of complex (poly)enes has been translated to a small molecule paradigm culminating in a highly (Z)-selective, catalytic isomerization of activated olefins using (-)-ribo-flavin (up to 99:1 Z/E). In contrast to the prominent Z -> E isomerization of the natural system, it was possible to invert the directionality of the isomerization (E -> Z) by simultaneously truncating the retinal scaffold, and introducing a third olefin substituent to augment A1,3-strain upon isomerization. Consequently, conjugation is reduced in the product chromophore leading to a substrate/product combination with discrete photophysical signatures. The operationally simple isomerization protocol has been applied to a variety of enone-derived substrates and showcased in the preparation of the medically relevant 4-substituted coumarin scaffold. A correlation of sensitizer triplet energy (ET) and reaction efficiency, together with the study of additive effects and mechanistic probes, is consistent with a triplet energy transfer mechanism.

  DOI：

  10.1021/jacs.5b07136
• 作为产物：
  描述：

  2,2,2-三氟苯乙酮 在 copper diacetate 、 sodium hydride 、 R-(+)-1,1'-联萘-2,2'-双二苯膦 作用下， 以 四氢呋喃 、 乙酸乙酯 、 mineral oil 为溶剂， 反应 24.5h， 生成 ethyl (Z)-4,4,4-trifluoro-3-phenylbut-2-enoate
  参考文献：
  名称：

  铜对极化烯烃的催化热力学异构化。

  摘要：

  报道了Cu（OAc）2 / rac -BINAP配合物在蓝光下催化α-和β-取代肉桂酸酯衍生物的反热力学异构化。恶唑烷酮模板的使用有利于铜催化剂与底物的络合，允许在简单而稳定的反应条件下以良好至优异的比率进行催化形成的生色团的E → Z异构化。还研究了基于生色团的瞬时形成的该过程的机理。

  DOI：

  10.1021/acs.orglett.0c02894

文献信息

• Efficient Trifluoromethylation of Activated and Non-Activated Alkenyl Halides by Using (Trifluoromethyl)trimethylsilane
  作者：Andreas Hafner、Stefan Bräse

  DOI：10.1002/adsc.201100528

  日期：2011.11

  An efficient method for the trifluoromethylation of halogenated double bonds by using in situ generated “trifluoromethyl copper” is described. Herein, the most common trifluoromethyl source, (trifluoromethyl)trimethylsilane, was converted selectively into “trifluoromethyl copper” by using copper iodide as copper source and potassium fluoride as promoter. In 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone

  描述了一种通过使用原位生成的“三氟甲基铜”对卤代双键进行三氟甲基化的有效方法。在此，最常见的三氟甲基源（（三氟甲基）三甲基硅烷）通过使用碘化铜作为铜源和氟化钾作为助催化剂选择性地转化为“三氟甲基铜”。在作为螯合溶剂的1,3-二甲基-3,4,5,6-四氢-2（1 H）-嘧啶酮（DMPU）中，活化和非活化链烯基卤化物的三氟甲基化反应主要以良好或优异的收率进行，最高可达克秤。
• Synthesis of β-CF3 ketones from trifluoromethylated allylic alcohols by ruthenium catalyzed isomerization
  作者：Vincent Bizet、Xavier Pannecoucke、Jean-Luc Renaud、Dominique Cahard

  DOI：10.1016/j.jfluchem.2013.01.004

  日期：2013.8

  This work describes the optimization process for the synthesis of β-trifluoromethylated ketones from trifluoromethylated allylic alcohols. This transformation proceeds through a ruthenium catalyzed isomerization under mild conditions with high atom economy. The effect of the CF3 group was analyzed and it provides fundamental insights into the isomerization reaction.

  这项工作描述了从三氟甲基化的烯丙醇β-三氟甲基化的酮的合成优化过程。该转化通过与高原子经济温和的条件下钌催化的异构化进行。所述CF的效果3进行分析组，并将其提供基本见解异构化反应。
• Remarkable reversal of stereoselectivity in Wittig-type olefinations of α-fluorinated alkyl aryl ketones
  作者：Tadashi Eguchi、Tetsuya Aoyama、Katsumi Kakinuma

  DOI：10.1016/s0040-4039(00)61141-3

  日期：1992.9

  reversal of stereoselectivity in the Wittig-type olefinations of α-fluorinated alkyl aryl ketones were described. Stabilized Wittig and Horner-Emmons reagents with these ketones selectively afforded the olefinic products in the stereochemically oppposite fashion to the non-flourinated ketone cases. The Still's reagent further reversed the stereochemical outcome with the fluorinated ketones.

  描述了在α-氟化烷基芳基酮的维蒂希型烯化反应中显着的反应性和立体选择性的逆转。具有这些酮的稳定化的Wittig和Horner-Emmons试剂选择性地提供了与非氟化酮盒立体化学相反的烯烃产物。斯蒂尔试剂与氟化酮进一步逆转了立体化学结果。
• Efficient and Stereoselective Synthesis of β-Trifluoromethyl α,β-Unsaturated Esters via Iron(III) Porphyrin-Catalyzed Olefination of Ketones
  作者：Ying Chen、Lingyu Huang、X. Peter Zhang

  DOI：10.1021/jo034509z

  日期：2003.7.1

  beta-Trifluoromethyl alpha,beta-unsaturated esters were efficiently prepared by reactions of fluorine-containing ketones with diazo compounds via metalloporphyrin-catalyzed olefination in the presence of triphenylphosphine. The commercially available Fe(III)(TPP)Cl (TPP: tetraphenylporphyrin) is effective for catalyzing the olefination of a variety of trifluoromethyl ketones with different diazoacetate esters under

  在三苯基膦的存在下，通过金属卟啉催化的含氟酮与重氮化合物的反应，可以有效地制备β-三氟甲基α，β-不饱和酯。市售的Fe（III）（TPP）Cl（TPP：四苯基卟啉）在温和条件下可有效催化各种三氟甲基酮与不同的重氮乙酸酯的烯化反应。反应以高产率（高达95％的分离产率）和高立体选择性（高达99％（E）-选择性）进行。
• Spatiotemporal Control of Pre-existing Alkene Geometry: A Bio-Inspired Route to 4-Trifluoromethyl-2<i>H</i>-chromenes
  作者：Svenja I. Faßbender、Jan B. Metternich、Ryan Gilmour

  DOI：10.1021/acs.orglett.7b03859

  日期：2018.2.2

  Routes to prepare C4-trifluoromethyl analogues of the 2H-chromene scaffold are scarce: this is particularly striking given the importance of fluorine in pharmaceutical development. To address this limitation, a facile strategy has been developed that is reliant on catalytic, geometric isomerization of easily accessible allylic alcohols (up to >95:5) followed by intramolecular cyclization via Pd catalysis

  制备2 H-亚甲基支架的C4-三氟甲基类似物的途径很少：鉴于氟在药物开发中的重要性，这一点尤其令人震惊。为了解决该限制，已经开发了一种容易的策略，该策略依赖于容易获得的烯丙醇的催化几何异构化（高达> 95：5），然后通过Pd催化进行分子内环化（高达96％）。这种简洁的仿生方法模拟了苯丙烷生物合成固有的光异构化/环化级联反应。