potassium (E)-4-(3-bromophenyl)-2-oxobut-3-enoate | 1267589-63-8

• 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: potassium (E)-4-(3-bromophenyl)-2-oxobut-3-enoate
• 英文别名: potassium 4-(3-bromophenyl)-2-oxobut-3-enoate
• CAS: 1267589-63-8
• 化学式: C₁₀H₆BrO₃*K
• 分子量: 293.158
• InChiKey: BYFVEZPGPJXKCP-FXRZFVDSSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  -2.21
• 重原子数：
  15.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  57.2
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  potassium (E)-4-(3-bromophenyl)-2-oxobut-3-enoate 在 indium(III) chloride 、 乙酰氯 、 三氟乙酸 作用下， 以 甲苯 为溶剂， 20.0 ℃ 、101.33 kPa 条件下， 反应 8.5h， 生成 (Z)-ethyl 4-(3-bromophenyl)-2-((triethylsilyl)oxy)but-2-enoate
  参考文献：
  名称：

  A Mild Method for Indium(III)-Catalyzed 1,4-Hydrosilylation of α,β-Enone Esters with Triethylsilane and Trifluoroacetic Acid

  摘要：

  A chemo- and stereoselective 1,4-hydrosilylation of alpha,beta-enone esters was developed using triethylsilane and trifluoroacetic acid under indium chloride catalysis.

  DOI：

  10.1055/s-0031-1290448
• 作为产物：
  描述：

  间溴苯甲醛 、 丙酮酸 在 potassium hydroxide 作用下， 以 甲醇 为溶剂， 以41%的产率得到potassium (E)-4-(3-bromophenyl)-2-oxobut-3-enoate
  参考文献：
  名称：

  2-羟基-3-烯酸钾可作为NHC催化的不对称反应中α，β-不饱和醛的有效且多用途的替代物

  摘要：

  2-羟基-3-烯酸钾很容易大规模制备并易于储存，已被发现是NHC催化的不对称反应中α，β-不饱和醛的有效且多用途的替代物。这些易处理的固体盐在手性N-杂环卡宾与LiCl的共同作用下可以释放出CO 2，然后通过同烯酸酯和α，β-不饱和酰基偶氮中间体发生不对称反应。反应具有高对映选择性的广泛的底物范围。

  DOI：

  10.1002/adsc.201701413

文献信息

• 4,5-DIHYDRO-1H-PYRAZOLE DERIVATIVE OR SALTS THEREOF, AND PHARMACEUTICAL COMPOSITION COMPRISING SAME
  申请人：YUHAN CORPORATION

  公开号：US20150291563A1

  公开（公告）日：2015-10-15

  The present invention provides a 4,5-dihydro-1H-pyrazole derivative or its pharmaceutically acceptable salt, a process for the preparation thereof, and a pharmaceutical composition comprising the same. The 4,5-dihydro-1H-pyrazole derivative or its pharmaceutically acceptable salt effectively increases the LXR transcriptional activity, and therefore can be usefully applied for preventing or treating a dysfunction in cholesterol metabolism, such as cholesterol gallstone, hyperlipidemia, or coronary atherosclerosis.

  本发明提供了一种4,5-二氢-1H-吡唑烷衍生物或其药用可接受盐，以及其制备方法和包含该衍生物的药物组合物。4,5-二氢-1H-吡唑烷衍生物或其药用可接受盐有效增加LXR转录活性，因此可以有效地用于预防或治疗胆固醇代谢功能障碍，如胆固醇结石、高脂血症或冠状动脉粥样硬化。
• Facile synthesis of substituted diaryl sulfones <i>via</i> a [3 + 3] benzannulation strategy
  作者：Xiang-zheng Tang、Lang Tong、Hua-ju Liang、Jie Liang、Yong Zou、Xue-jing Zhang、Ming Yan、Albert S. C. Chan

  DOI：10.1039/c8ob00662h

  日期：——

  base-mediated [3 + 3] benzannulation strategy for the conversion of 1,3-bis(sulfonyl)propenes and β,γ-unsaturated α-ketoesters to diaryl sulfones has been developed. This method provides facile, metal-free and efficient access to highly substituted diaryl sulfones in good to excellent yields. In addition, the sulfonyl group could be easily removed or converted to other functional groups via an organostannane

  已开发出一种由碱介导的[3 + 3]苯环芳构化策略，可将1,3-双（磺酰基）丙烯和β，γ-不饱和α-酮酸酯转化为二芳基砜。该方法可以轻松，无金属且高效地获得高取代的二芳基砜，且收率良好。另外，磺酰基可通过有机锡烷中间体容易地除去或转化为其他官能团。
• Synthesis of Chiral Bispirotetrahydrofuran Oxindoles by Cooperative Bimetallic-Catalyzed Asymmetric Cascade Reaction
  作者：Meng-Meng Liu、Xiao-Chao Yang、Yuan-Zhao Hua、Jun-Biao Chang、Min-Can Wang

  DOI：10.1021/acs.orglett.9b00386

  日期：2019.4.5

  Under mild conditions, a broad range of bispirotetrahydrofuran oxindoles have been synthesized with excellent stereoselectivities through the cascade Michael/hemiketalization/Friedel–Crafts reaction of β,γ-unsaturated α-ketoamide and 2-hydroxy-1-indanone. The reaction can be performed on a gram scale with low catalyst loading (2 mol %) without impacting its efficiency.

  通过协同双核锌-AzePhenol催化剂描述了一种对映选择性构建双螺四氢呋喃羟吲哚的新的有效途径。在温和的条件下，通过β，γ-不饱和α-酮酰胺和2-羟基-1-茚满酮的级联迈克尔/半缩酮化/弗里德-克拉夫茨反应，合成了多种具有优良立体选择性的双螺四氢呋喃恶吲哚。该反应可以以克级进行，催化剂负载量低（2mol％），而不会影响其效率。
• Organocatalytic Functionalization of Carboxylic Acids: Isothiourea-Catalyzed Asymmetric Intra- and Intermolecular Michael Addition−Lactonizations
  作者：Dorine Belmessieri、Louis C. Morrill、Carmen Simal、Alexandra M. Z. Slawin、Andrew D. Smith

  DOI：10.1021/ja109975c

  日期：2011.3.2

  Tetramisole promotes the catalytic asymmetric intramolecular Michael addition-lactonization of a variety of enone acids, giving carbo- and heterocyclic products with high diastereo- and enantiocontrol (up to 99:1 dr, up to 99% ee) that are readily derivatized to afford functionalized indene and dihydrobenzofuran carboxylates. Chiral isothioureas also promote the catalytic asymmetric intermolecular Michael addition-lactonization of arylacetic acids and alpha-keto-beta,gamma,-unsaturated esters, giving anti-dihydropyranones with high diastereo- and enantiocontrol (up to 98:2 dr, up to 99% ee).
• Dienamine-Mediated Inverse-Electron-Demand Hetero-Diels-Alder Reaction by Using an Enantioselective H-Bond-Directing Strategy
  作者：Łukasz Albrecht、Gustav Dickmeiss、Christian F. Weise、Carles Rodríguez-Escrich、Karl Anker Jørgensen

  DOI：10.1002/anie.201207122

  日期：2012.12.21

  Giving directions: optically active dihydropyrans bearing three contiguous stereogenic centers can be efficiently prepared by the title reaction. High stereo- and regiocontrol can be achieved by employing a bifunctional H-bond-directing aminocatalyst.