ethyl (Z)-3-(thiophen-2-yl)but-2-enoate | 62815-71-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl (Z)-3-(thiophen-2-yl)but-2-enoate
• 英文别名: Ethyl(2Z)-3-(thiophen-2-yl)but-2-enoate；ethyl (Z)-3-thiophen-2-ylbut-2-enoate
• CAS: 62815-71-8
• 化学式: C₁₀H₁₂O₂S
• 分子量: 196.27
• InChiKey: KIVVRIRTPXUNIQ-FPLPWBNLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  54.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  (E)-ethyl 3-(thiophen-2-yl)but-2-enoate 以 二氯甲烷 为溶剂， 以35%的产率得到ethyl (Z)-3-(thiophen-2-yl)but-2-enoate
  参考文献：
  名称：

  （E）-β-氯-α-碘-α，β-不饱和酯和酰胺新型反应的单异构体三取代烯烃

  摘要：

  （E）-β-氯代-α-碘-α，β-不饱和酯通过在回流下交叉偶联而转化为带有三个不同碳取代基的单一异构体三取代的烯烃。机理研究表明，该过程将氢从硼酸转移到底物的α位置，然后在取代氯化物的同时将芳基引入中间模板的β位置。该反应是高度立体选择性的，显示出对E-异构体的偏好。该过程通过（E）-β-氯代-α-芳基-α，β-不饱和酯进行，这些酯被有效地转化为相应的E立体选择性的铃木型反应生成单异构体。所观察到的立体化学显然是通过脲基酸钯的中间体实现的。该反应涉及催化循环，其中通过形成联芳基偶联的产物将Pd II还原为Pd 0。

  DOI：

  10.1021/jo8008325

文献信息

• A Multicomponent Ni-, Zr-, and Cu-Catalyzed Strategy for Enantioselective Synthesis of Alkenyl-Substituted Quaternary Carbons
  作者：Kevin P. McGrath、Amir H. Hoveyda

  DOI：10.1002/anie.201309456

  日期：2014.2.10

  of alkenyl groups to acyclic trisubstituted enones, an advance achieved by adopting an easily modifiable and fully catalytic approach. The requisite alkenylaluminum reagents are synthesized with exceptional site‐ and/or stereoselectivity by a Ni‐catalyzed hydroalumination process, and the necessary enones are prepared through a site‐ and stereoselective zirconocene‐catalyzed carboalumination/acylation

  富含对映体的含羰基化合物的可用性对于生物活性分子的合成至关重要。由于催化对映选择性共轭加成 (ECA) 反应直接生成后一类有价值的分子，因此此类方案的设计和开发代表了现代化学中一个引人注目的目标。在此，我们公开了烯基到无环三取代烯酮的 ECA 问题的第一个解决方案，这是通过采用易于修改和完全催化的方法取得的进展。通过镍催化的加氢铝化过程合成了具有特殊位点和/或立体选择性的所需烯基铝试剂，并通过位点和立体选择性二茂锆催化的碳铝化/酰化反应制备了必要的烯酮。全催化过程在四小时内完成，以高达 77% 的总产率和 99:1 的对映体比例提供所需的产物。
• INHIBITOR(S) OF TRANSPORTERS OR UPTAKE OF MONOAMINERGIC NEUROTRANSMITTERS
  申请人：White James David

  公开号：US20120190725A1

  公开（公告）日：2012-07-26

  The present disclosure concerns a compound, or a pharmaceutically acceptable salt thereof, having a formula: where at least one of R 1 -R 4 is a heterocycle, at least one of R 1 -R 4 is an aryl group coupled to the ring by a linker atom, functional group, or other moiety, or where none of R 1 -R 4 is an amide, and any and all combinations thereof. Remaining R 1 -R 4 substituents independently are aliphatic, substituted aliphatic, amine, substituted amine, aryl, substituted aryl, cyclic, substituted cyclic, halide, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic, hydrogen or hydroxyl. A method for treating a subject also is provided comprising administering a disclosed compound or compounds, or a prodrug that is converted into the disclosed compound or compounds, or a composition comprising the compound, compounds, or prodrugs thereof, to a subject. A method for making disclosed compounds also is provided.

  本公开涉及一种化合物或其药学上可接受的盐，其具有以下公式：其中R1-R4中至少有一个是杂环，R1-R4中至少有一个是通过连接原子、功能团或其他基团与环相偶联的芳基团，或其中R1-R4均不是酰胺，以及所有这些组合。其余的R1-R4取代基独立地为脂肪族、取代脂肪族、胺、取代胺、芳基、取代芳基、环状、取代环状、卤素、杂芳基、取代杂芳基、杂环、取代杂环、氢或羟基。还提供了一种治疗受试者的方法，包括向受试者投药所述化合物或化合物、或被转化为所述化合物或化合物的前药，或包含化合物、化合物或其前药的组合物。还提供了制备公开化合物的方法。
• A Bio-Inspired, Catalytic<i>E</i>→<i>Z</i>Isomerization of Activated Olefins
  作者：Jan B. Metternich、Ryan Gilmour

  DOI：10.1021/jacs.5b07136

  日期：2015.9.9

  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.
• Corrigendum: A Multicomponent Ni-, Zr-, and Cu-Catalyzed Strategy for Enantioselective Synthesis of Alkenyl-Substituted Quaternary Carbons
  作者：Kevin P. McGrath、Amir H. Hoveyda

  DOI：10.1002/anie.201407837

  日期：2014.10.6
• US8772330B2
  申请人：——

  公开号：US8772330B2

  公开（公告）日：2014-07-08