(E)-4-(3-chlorophenyl)but-3-enoic acid | 1374877-39-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (E)-4-(3-chlorophenyl)but-3-enoic acid
• CAS: 1374877-39-0
• 化学式: C₁₀H₉ClO₂
• 分子量: 196.633
• InChiKey: FFTKNSUZAATZRX-DUXPYHPUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.1
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (E)-4-(3-chlorophenyl)but-3-enoic acid 在 palladium 10% on activated carbon 、 氢气 作用下， 以 乙醇 为溶剂， 反应 1.0h， 以38%的产率得到4-(3-氯苄基)丁酸
  参考文献：
  名称：

  Dual Targeting of Adenosine A_2A Receptors and Monoamine Oxidase B by 4H-3,1-Benzothiazin-4-ones

  摘要：

  Blockade of A(2A) adenosine receptors (A(2A)ARs) and inhibition of monoamine oxidase B (MAO-B) in the brain are considered attractive strategies for the treatment of neurodegenerative diseases such as Parkinson's disease (PD). In the present study, benzothiazinones, e.g., 2-(3-chlorophenoxy)-N-(4-oxo-4H-3,1-benzothiazin-2-yl)acetamide (13), were identified as a novel class of potent MAO-B inhibitors (IC50 human MAO-B: 1.63 nM). Benzothiazinones with large substituents in the 2-position, e.g., methoxycinnamoylamino, phenylbutyrylamino, or chlorobenzylpiperazinylbenzamido residues (14, 17, 27, and 28), showed high affinity and selectivity for A(2A)ARs (K-i human A(2A)AR: 39.5-69.5 nM). By optimizing benzothiazinones for both targets, the first potent, dual-acting A(2A)AR/MAO-B inhibitors with a nonxanthine structure were developed. The best derivative was N-(4-oxo-4H-3,1-benzothiazin-2-yl)-4-phenylbutanamide (17, K-i human A(2A), 39.5 nM; IC50 human MAO-B, 34.9 nM; selective versus other AR subtypes and MAO-A), which inhibited A(2A)AR-induced cAMP accumulation and showed competitive, reversible MAO-B inhibition. The new compounds may be useful tools for validating the A(2A)AR/MAO-B dual target approach in PD.

  DOI：

  10.1021/jm400336x
• 作为产物：
  描述：

  三苯基膦 在 potassium tert-butylate 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 反应 29.0h， 生成 (E)-4-(3-chlorophenyl)but-3-enoic acid
  参考文献：
  名称：

  Dual Targeting of Adenosine A_2A Receptors and Monoamine Oxidase B by 4H-3,1-Benzothiazin-4-ones

  摘要：

  Blockade of A(2A) adenosine receptors (A(2A)ARs) and inhibition of monoamine oxidase B (MAO-B) in the brain are considered attractive strategies for the treatment of neurodegenerative diseases such as Parkinson's disease (PD). In the present study, benzothiazinones, e.g., 2-(3-chlorophenoxy)-N-(4-oxo-4H-3,1-benzothiazin-2-yl)acetamide (13), were identified as a novel class of potent MAO-B inhibitors (IC50 human MAO-B: 1.63 nM). Benzothiazinones with large substituents in the 2-position, e.g., methoxycinnamoylamino, phenylbutyrylamino, or chlorobenzylpiperazinylbenzamido residues (14, 17, 27, and 28), showed high affinity and selectivity for A(2A)ARs (K-i human A(2A)AR: 39.5-69.5 nM). By optimizing benzothiazinones for both targets, the first potent, dual-acting A(2A)AR/MAO-B inhibitors with a nonxanthine structure were developed. The best derivative was N-(4-oxo-4H-3,1-benzothiazin-2-yl)-4-phenylbutanamide (17, K-i human A(2A), 39.5 nM; IC50 human MAO-B, 34.9 nM; selective versus other AR subtypes and MAO-A), which inhibited A(2A)AR-induced cAMP accumulation and showed competitive, reversible MAO-B inhibition. The new compounds may be useful tools for validating the A(2A)AR/MAO-B dual target approach in PD.

  DOI：

  10.1021/jm400336x

文献信息

• Efficient Pd-Catalyzed Regio- and Stereoselective Carboxylation of Allylic Alcohols with Formic Acid
  作者：Ming-Chen Fu、Rui Shang、Wan-Min Cheng、Yao Fu

  DOI：10.1002/chem.201701971

  日期：2017.7.3

  Formic acid is efficiently used as a C1 source to directly carboxylate allylic alcohols in the presence of a low loading of palladium catalyst and acetic anhydride as additive to afford β,γ‐unsaturated carboxylic acids with excellent chemo‐, regio‐, and stereoselectivity. The reaction proceeds through a carbonylation process with in situ‐generated carbon monoxide under mild conditions, avoiding the

  在少量负载的钯催化剂和乙酸酐作为添加剂的情况下，甲酸可有效地用作C1来源，直接将烯丙醇羧化，从而获得具有出色的化学，区域和立体选择性的β，γ-不饱和羧酸。反应在温和条件下与原位生成的一氧化碳通过羰基化过程进行，避免使用高压气态CO。咬合角大的双膦配体（4,5-双di diphenylphosphino} -9,9-发现二甲基黄嘌呤，Xantphos对这种转化是唯一有效的。该反应的区域和立体收敛归因于在钯催化剂存在下烯丙基亲电子试剂的热力学上有利的异构化。
• Palladium-Catalyzed Direct C–H Arylation of 3-Butenoic Acid Derivatives
  作者：Shan Yang、Lingling Liu、Zheng Zhou、Zhibin Huang、Yingsheng Zhao

  DOI：10.1021/acs.orglett.0c03773

  日期：2021.1.15

  We report herein a direct method to synthesize 4-aryl-3-butenoic acid through a carboxylic-acid-directed oxidative Heck reaction. The various 4-aryl-3-butenoic acids are easily prepared in moderate to good yields. In view of the promising bioactivity of 4-phenyl-3-butenoic acid previously reported, its derivatives reported here may be bioactive.

  我们在本文中报道了通过羧酸定向的氧化Heck反应合成4-芳基-3-丁烯酸的直接方法。各种4-芳基-3-丁烯酸很容易以中等到良好的产率制备。鉴于先前报道的4-苯基-3-丁烯酸有希望的生物活性，因此本文报道的其衍生物可能具有生物活性。
• Stereoselective Ring-Opening of <i>gem</i> -Difluorocyclopropanes: An Entry to Stereo-defined (<i>E</i> ,<i>E</i> )- and (<i>E</i> ,<i>Z</i> )-Conjugated Fluorodienes
  作者：Simon Specklin、Johan Fenneteau、Parthasarathi Subramanian、Janine Cossy

  DOI：10.1002/chem.201704956

  日期：2018.1.9

  The ring‐opening of gem‐difluorocyclopropyl acetaldehydes producing selectively (E,E)‐ and (E,Z)‐conjugated fluorodienals is described. Two stereo‐divergent methods are presented to access both stereoisomers from a common precursor, in high yield and selectivity. The mechanistic aspect of these transformations is discussed.

  描述了宝石-二氟环丙基乙醛的开环，它们选择性地产生（E，E）-和（E，Z）共轭的二氟二烯。提出了两种立体发散方法，可从一个常见的前体中获得两种立体异构体，并具有高收率和选择性。讨论了这些转换的机械方面。
• Tertiary Amides as Directing Groups for Enantioselective C−H Amination using Ion‐Paired Rhodium Complexes
  作者：Kieran J. Paterson、Amit Dahiya、Benjamin D. Williams、Robert J. Phipps

  DOI：10.1002/anie.202317489

  日期：2024.4.2

  Direct amination of benzylic C−H bonds generates important stereocenters. Our approach, in which the chirality of a bimetallic rhodium complex is located on its associated cations, achieves this on tertiary amide-containing substrates to give amination of arylbutyric and arylvaleric acid-derived amides. We believe that the amide most likely interacts directly with the chiral cation to provide a highly

  苄基 C−H 键的直接胺化产生重要的立体中心。我们的方法中，双金属铑配合物的手性位于其相关的阳离子上，在含叔酰胺的底物上实现了这一点，得到芳基丁酸和芳基戊酸衍生的酰胺的胺化。我们认为酰胺很可能直接与手性阳离子相互作用，为 C−H 胺化提供高度有序的过渡态。
• OWTON, W. MARTIN;BRUNAVS, MICHAEL, SYNTH. COMMUN., 21,(1991) N-9, C. 981-987
  作者：OWTON, W. MARTIN、BRUNAVS, MICHAEL

  DOI：——

  日期：——