(E)-4-(4-methoxyphenyl)-1,1,1-trifluorobut-3-en-2-one | 96107-02-7

• 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: (E)-4-(4-methoxyphenyl)-1,1,1-trifluorobut-3-en-2-one
• 英文别名: (E)-1,1,1-trifluoro-4-(4-methoxyphenyl)but-3-en-2-one；(3E)-1,1,1-trifluoro-4-(4-methoxyphenyl)but-3-en-2-one
• CAS: 96107-02-7
• 化学式: C₁₁H₉F₃O₂
• 分子量: 230.186
• InChiKey: UUEUIHMPHYBCFZ-QPJJXVBHSA-N

物化性质

• 熔点：
  38 °C
• 沸点：
  252.6±40.0 °C(Predicted)
• 密度：
  1.248±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  16
• 可旋转键数：
  3
• 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：
  5

反应信息

• 作为反应物：
  描述：

  (E)-4-(4-methoxyphenyl)-1,1,1-trifluorobut-3-en-2-one 在 sodium acetate 、 对甲苯磺酰肼 作用下， 以 乙醇 为溶剂， 反应 12.0h， 以90%的产率得到3-(4-甲氧基苯基)-5-(三氟甲基)-1H-吡唑
  参考文献：
  名称：

  An efficient route to 3-trifluoromethylpyrazole via cyclization/1,5-H shift and its applications in the synthesis of bioactive compounds

  摘要：

  A methodology for regioselective synthesis of 3-trifluoromethylpyrazole from the reaction of trifluoromethyl alkenone and tosylhydrazone has been developed. The reaction was proposed to proceed through a tandem cyclization and 1,5-H shift reaction, which can be applied to the synthesis of bioactive compounds like Celecoxib, Mavacoxib, and SC-560. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2015.09.007
• 作为产物：
  描述：

  2-ethoxy-4-(4-methoxyphenyl)-6-trifluoromethyl-3,4-dihydro-2H-pyran 300.0 ℃ 、101.33 kPa 条件下， 反应 1.0h， 以79%的产率得到(E)-4-(4-methoxyphenyl)-1,1,1-trifluorobut-3-en-2-one
  参考文献：
  名称：

  A Facile Synthesis of 4-Aryl-1,1,1-trifluorobut-3-en-2-ones via 4-Aryl Substituted CF3 - Containing Dihydropyran Derivatives: A Versatile Method for the Introduction of Fluorine-Containing C4- and C6-Unit to Aromatic Compounds

  摘要：

  The CF3 - containing dihydropyran derivative (2) reacted easily with various aromatic compounds in trifluoroacetic acid to give novel 4-aryl substituted dihydropyran derivatives (7) in moderate to high yields. Retro hetero Die Is-Alder reaction of thus obtained 7 proceeded readily by heating at 300 degrees C to afford the corresponding 4-aryl-1,1,1-trifluorobut-3-en-2-ones (12) in good to excellent yields. With the use of p-toluenesulfonic acid instead of trifluoroacetic acid together with dihydropyran (2) in acetonitrile, 4-trifluoroacetyl-1,3-butalienylation of 1,3-dimethoxybenzene occurred successfully. The bimolecular reaction of dihydropyran (2) in the presence of p-toluenesulfonic acid was also examined.

  DOI：

  10.3987/com-09-s(s)60

文献信息

• Radical Trifluoroacetylation of Alkenes Triggered by a Visible‐Light‐Promoted C–O Bond Fragmentation of Trifluoroacetic Anhydride
  作者：Kun Zhang、David Rombach、Nicolas Yannick Nötel、Gunnar Jeschke、Dmitry Katayev

  DOI：10.1002/anie.202109235

  日期：2021.10.4

  methodologies and occurs through a trifluoroacyl radical mechanism promoted by a photocatalyst, which triggers a C−O bond fragmentation. Mechanistic studies (kinetic isotope effects, spectroelectrochemistry, optical spectroscopy, theoretical investigations) highlight the evidence of a fleeting CF3CO radical under photoredox conditions. The trifluoroacyl radical can be stabilized under CO atmosphere, delivering

  我们报告了一种温和且操作简单的烯烃三氟酰化策略，该策略利用三氟乙酸酐作为低成本且易于获得的试剂。这种光介导的过程与传统方法有着根本的不同，它通过由光催化剂促进的三氟酰基自由基机制发生，从而触发 CO 键断裂。机理研究（动力学同位素效应、光谱电化学、光谱学、理论研究）突出了转瞬即逝的 CF 3的证据光氧化还原条件下的 CO 自由基。三氟酰基自由基可以在 CO 气氛下稳定，提供具有更高化学效率的三氟乙酰化产物。此外，该方法可以通过简单地改变反应参数变成三氟甲基化协议。除了简单的烯烃外，该方法还允许小分子药物和常见药效团的化学和区域选择性功能化。
• Catalytic Enantioselective Cloke–Wilson Rearrangement
  作者：Alesandere Ortega、Rubén Manzano、Uxue Uria、Luisa Carrillo、Efraim Reyes、Tomas Tejero、Pedro Merino、Jose L. Vicario

  DOI：10.1002/anie.201804614

  日期：2018.7.2

  Racemic cyclopropyl ketones undergo enantioselective rearrangement to deliver the corresponding dihydrofurans in the presence of a chiral phosphoric acid as the catalyst. The reaction involves activation of the donor‐acceptor cyclopropane substrate by the chiral Brønsted acid catalyst to promote the ring‐opening event, thus generating a carbocationic intermediate that subsequently undergoes cyclization

  外消旋环丙基酮在手性磷酸作为催化剂存在下进行对映选择性重排，以递送相应的二氢呋喃。该反应涉及通过手性布朗斯台德酸催化剂活化供体-受体环丙烷底物以促进开环事件，从而产生碳阳离子中间体，随后进行环化。计算研究和控制实验支持这种机制途径。
• One-pot Preparation of 2,6-Disubstituted 4-(Trifluoromethyl)pyrimidines <i>via</i> the Tandem Cyclization, Dehydration, and Oxidation Reaction of α,β-Unsaturated Trifluoromethyl Ketones Using POCl₃-Pyridine-Silica Gel and MnO₂ Systems
  作者：Kazumasa Funabiki、Hiroko Nakamura、Masaki Matsui、Katsuyoshi Shibata

  DOI：10.1055/s-1999-2741

  日期：1999.6

  The treatment of α,β-unsaturated trifluoromethyl ketones with amidines in acetonitrile gave the corresponding 4-hydroxy-4-(trifluoromethyl)-3,5,6-trihydropyrimidines, followed by successive dehydration with phosphorus oxychloride-pyridine-silica gel and oxidation with manganese(IV) oxide, producing 2,6-disubstituted 4-(trifluoromethyl)pyrimidines in good to excellent yields.

  在乙腈中，以酰胺处理α,β-不饱和三氟甲基酮，得到了相应的4-羟基-4-(三氟甲基)-3,5,6-三氢嘧啶，随后通过磷酰氯-吡啶-硅胶依次脱水，再以二氧化锰氧化，在优良至极佳的产率下生成2,6-二取代4-(三氟甲基)嘧啶。
• A Weinreb amide approach to the synthesis of trifluoromethylketones
  作者：DiAndra M. Rudzinski、Christopher B. Kelly、Nicholas E. Leadbeater

  DOI：10.1039/c2cc35037h

  日期：——

  A novel route to access trifluoromethylketones (TFMKs) from Weinreb amides is reported. This represents the first documented case of the Ruppert–Prakash reagent (TMS–CF3) reacting in a constructive manner with an amide and enables synthesis of TMFKs without risk of over-trifluoromethylation.

  报道了一条从Weinreb酰胺制备三氟甲基酮（TFMKs）的新路线。这是首次记录到Ruppert–Prakash试剂（TMS–CF3）以建设性方式与酰胺反应，并且可以无需担心过度三氟甲基化风险地合成TMFKs。
• Highly enantioselective copper(<scp>i</scp>)-catalyzed conjugate addition of 1,3-diynes to α,β-unsaturated trifluoromethyl ketones
  作者：Amparo Sanz-Marco、Gonzalo Blay、M. Carmen Muñoz、José R. Pedro

  DOI：10.1039/c5cc01676b

  日期：——

  The conjugate diynylation of [small alpha],[small beta]-unsaturated trifluoromethyl ketones is carried out in the presence of a low catalytic load (2.5 mol %) of a copper(I)-MeOBIPHEP complex, triethylamine and a terminal 1,3-diyne....

  在低催化负荷（2.5 mol％）的铜（I）-MeOBIPHEP络合物，三乙胺和末端1,3的存在下，进行小α，小β-不饱和三氟甲基酮的共轭二炔化反应。 -狄恩...

表征谱图