(E)-3-(5-bromothiophen-2-yl)-2-cyanoacrylamide | 97006-49-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 英文名称: (E)-3-(5-bromothiophen-2-yl)-2-cyanoacrylamide
• 英文别名: (E)-3-(5-bromo-2-thienyl)-2-cyanoacrylamide；(E)-3-(5-bromothiophen-2-yl)-2-cyanoprop-2-enamide
• CAS: 97006-49-0
• 化学式: C₈H₅BrN₂OS
• 分子量: 257.111
• InChiKey: QKJHCHZYOGNDGZ-HWKANZROSA-N

物化性质

• 沸点：
  474.7±45.0 °C(Predicted)
• 密度：
  1.754±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  95.1
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  吗啉 、 (E)-3-(5-bromothiophen-2-yl)-2-cyanoacrylamide 在 copper(l) iodide 、 potassium carbonate 、 L-脯氨酸 作用下， 以 二甲基亚砜 为溶剂， 以38%的产率得到(E)-2-cyano-3-(5-morpholin-4-yl-2-thienyl)acrylamide
  参考文献：
  名称：

  Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases

  摘要：

  The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2011.10.061
• 作为产物：
  描述：

  C₈H₄BrNOS 在 盐酸羟胺 作用下， 以 甲醇 为溶剂， 反应 3.0h， 以78%的产率得到(E)-3-(5-bromothiophen-2-yl)-2-cyanoacrylamide
  参考文献：
  名称：

  从Baylis-Hillman反应的醛中高效无催化一锅合成伯酰胺

  摘要：

  在本文中，已经开发了一种在无催化剂条件下使用羟胺/甲醇系统从Baylis-Hillman加合物的醛制备烯丙基酰胺的简便有效的方法。研究了溶剂和温度对反应的影响以及苯环上的取代基。该方法的优点如操作简单，中等至极好的收率，较短的反应时间和简单的反应过程等得到了最好的证明。最重要的是，在没有催化剂和外部氧化剂的情况下，反应平稳进行。

  DOI：

  10.1039/c7nj01965c

文献信息

• Triflic acid-catalyzed metal-free synthesis of (<i>E</i>)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones
  作者：Bapurao D. Rupanwar、Santosh S. Chavan、Anil M. Shelke、Gurunath M. Suryavanshi

  DOI：10.1039/c7nj05169g

  日期：——

  efficient synthesis of biologically active (E)-2-cyanoacrylamides and 3-substituted azetidine-2,4-diones has been reported with 64–94% yields under metal-free conditions. The reaction proceeds through sequential Knoevenagel condensation/stereoselective in situ monohydration of nitrile or C–N cyclization protocol in one-pot. The attractive features of this tandem process are moderate reaction conditions

  据报道，在无金属条件下，TfOH催化可高效合成具有生物活性的（E）-2-氰基丙烯酰胺和3-取代的氮杂环丁烷2,4-二酮，收率为64-94％。反应通过一锅顺序进行的Knoevenagel缩合反应/腈选择性地原位单水合或CN环化方案进行。该串联方法的吸引人的特征是中等反应条件，高原子经济性，广泛的底物范围，克级反应和易于操作。
• Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases
  作者：Christoph Nitsche、Christian Steuer、Christian D. Klein

  DOI：10.1016/j.bmc.2011.10.061

  日期：2011.12

  The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
• An efficient catalyst-free one-pot synthesis of primary amides from the aldehydes of the Baylis–Hillman reaction
  作者：Thatikonda Narendar Reddy、Bikshapathi Raktani、Ramesh Perla、Mettu Ravinder、Jayathirtha Rao Vaidya、N. Jagadeesh Babu

  DOI：10.1039/c7nj01965c

  日期：——

  Herein, a facile and efficient method for the preparation of allyl amides from the aldehyde of Baylis–Hillman adducts has been developed using a hydroxylamine/methanol system under a catalyst-free condition. The effects of solvents and temperature on the reaction and substituents on the phenyl ring have been examined. This method is best demonstrated by its advantages such as operational simplicity

  在本文中，已经开发了一种在无催化剂条件下使用羟胺/甲醇系统从Baylis-Hillman加合物的醛制备烯丙基酰胺的简便有效的方法。研究了溶剂和温度对反应的影响以及苯环上的取代基。该方法的优点如操作简单，中等至极好的收率，较短的反应时间和简单的反应过程等得到了最好的证明。最重要的是，在没有催化剂和外部氧化剂的情况下，反应平稳进行。