(Z)-ethyl 3-(2,4-dichlorophenyl)acrylate | 874990-88-2

• 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: (Z)-ethyl 3-(2,4-dichlorophenyl)acrylate
• 英文别名: ethyl (Z)-3-(2,4-dichlorophenyl)prop-2-enoate
• CAS: 874990-88-2
• 化学式: C₁₁H₁₀Cl₂O₂
• 分子量: 245.105
• InChiKey: LNURJQJBCBYMGG-XQRVVYSFSA-N

物化性质

• 沸点：
  340.4±27.0 °C(Predicted)
• 密度：
  1.284±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  15
• 可旋转键数：
  4
• 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：
  2

反应信息

• 作为反应物：
  描述：

  (Z)-ethyl 3-(2,4-dichlorophenyl)acrylate 在 水 、 sodium hydroxide 作用下， 以 乙醇 为溶剂， 反应 4.0h， 以91%的产率得到2,4-二氯-顺式-肉桂酸
  参考文献：
  名称：

  Substituent effects of cis-cinnamic acid analogues as plant growh inhibitors

  摘要：

  1-O-cis-Cinnamoyl-beta-D-glucopyranose is one of the most potent allelochemicals that has been isolated from Spiraea thunbergii Sieb by Hiradate et al. It derives its strong inhibitory activity from cis-cinnamic acid (cis-CA), which is crucial for phytotoxicity. By preparing and assaying a series of cis-CA analogues, it was previously found that the key features of cis-CA for lettuce root growth inhibition are a phenyl ring, cis-configuration of the alkene moiety, and carboxylic acid. On the basis of a structure-activity relationship study, the substituent effects on the aromatic ring of cis-CA were examined by systematic synthesis and the lettuce root growth inhibition assay of a series of cis-CA analogues having substituents on the aromatic ring. While ortho- and para-substituted analogues exhibited low potency in most cases, meta-substitution was not critical for potency, and analogues having a hydrophobic and sterically small substituent were more likely to be potent. Finally, several cis-CA analogues were found to be more potent root growth inhibitors than cis-CA. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2013.08.013
• 作为产物：
  描述：

  2,4-二氯苯甲醛 、 ethyl 2-[bis(2-isopropylphenoxy)phosphoryl]acetate 在 苄基三甲基氢氧化铵 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 以85%的产率得到(Z)-ethyl 3-(2,4-dichlorophenyl)acrylate
  参考文献：
  名称：

  Substituent effects of cis-cinnamic acid analogues as plant growh inhibitors

  摘要：

  1-O-cis-Cinnamoyl-beta-D-glucopyranose is one of the most potent allelochemicals that has been isolated from Spiraea thunbergii Sieb by Hiradate et al. It derives its strong inhibitory activity from cis-cinnamic acid (cis-CA), which is crucial for phytotoxicity. By preparing and assaying a series of cis-CA analogues, it was previously found that the key features of cis-CA for lettuce root growth inhibition are a phenyl ring, cis-configuration of the alkene moiety, and carboxylic acid. On the basis of a structure-activity relationship study, the substituent effects on the aromatic ring of cis-CA were examined by systematic synthesis and the lettuce root growth inhibition assay of a series of cis-CA analogues having substituents on the aromatic ring. While ortho- and para-substituted analogues exhibited low potency in most cases, meta-substitution was not critical for potency, and analogues having a hydrophobic and sterically small substituent were more likely to be potent. Finally, several cis-CA analogues were found to be more potent root growth inhibitors than cis-CA. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2013.08.013

文献信息

• Hypervalent iodine(<scp>iii</scp>) induced oxidative olefination of benzylamines using Wittig reagents
  作者：Vijayalakshmi Ramavath、Bapurao D. Rupanawar、Satish G. More、Ajay H. Bansode、Gurunath Suryavanshi

  DOI：10.1039/d1nj01170g

  日期：——

  and secondary benzylamines using 2C-Wittig reagents, which provides easy access to α,β-unsaturated esters. Mild reaction conditions, good to excellent yields with high (E) selectivity, and a broad substrate scope are the key features of this reaction. We have successfully carried out the gram-scale synthesis of α,β-unsaturated esters.

  我们使用2C-Wittig试剂开发了高价碘（III）诱导的伯苄胺和仲苄胺的氧化烯化反应，该反应可轻松获得α，β-不饱和酯。温和的反应条件，具有高（E）选择性的良好至优异的产率以及广泛的底物范围是该反应的关键特征。我们已经成功地进行了克级的α，β-不饱和酯的合成。