(E)-ethyl 2-hydroxycinnamate | 17041-46-2

• 物质功能分类: 化学试剂 - 有机试剂 - 酯类
• 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: (E)-ethyl 2-hydroxycinnamate
• 英文别名: (E)-ethyl 3-(2-hydroxyphenyl)acrylate；ethyl (E)-3-(2-hydroxyphenyl)acrylate；ethyl 2-hydroxycinnamate；ethyl (E)-3-(2-hydroxyphenyl)prop-2-enoate；ethyl trans-2-hydroxycinnamate；(E)-3-(2-Hydroxy-phenyl)-acrylic acid ethyl ester
• CAS: 17041-46-2
• 化学式: C₁₁H₁₂O₃
• 分子量: 192.214
• InChiKey: SRBYHEKXHQYMRN-BQYQJAHWSA-N

物化性质

• 熔点：
  65-68°C
• 沸点：
  322℃
• 密度：
  1.162
• 闪点：
  137℃

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  14
• 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：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (E)-ethyl 2-hydroxycinnamate 在 镍 氢气 、 硼酸 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 、 水 、 乙酸乙酯 为溶剂， 反应 24.0h， 生成 水杨醛
  参考文献：
  名称：

  Litinas, Konstantinos E.; Nicolaides, Demetrios N.; Varella, Evangelia A., Journal of Heterocyclic Chemistry, 1990, vol. 27, # 3, p. 769 - 774

  摘要：

  DOI：
• 作为产物：
  描述：

  ethyl (1R,2R,2aR,8bR)-1-(2-hydroxyphenyl)-3-oxo-1,2,2a,8b-tetrahydrocyclobuta[c]chromene-2-carboxylate 以71%的产率得到
  参考文献：
  名称：

  YONEZAWA, NORIYUKI;YOSHIDA, TSUYOSHI;HASEGAWA, MASAKI, J. CHEM. SOC. PERKIN TRANS., 1983, N 5, 1083-1086

  摘要：

  DOI：

文献信息

• Synthesis of the furo[2,3-<i>b</i>]chromene ring system of hyperaspindols A and B
  作者：Danielle L Paterson、David Barker

  DOI：10.3762/bjoc.11.29

  日期：——

  The synthesis of the unique furo[2,3-b]chromene ring system found in hyperaspidinols A and B, acylphloroglucinols from Hypericum chinense has been achieved in twelve steps. By comparison of the NMR spectra of the synthesized compounds with those of the natural products, a relative stereochemistry is suggested, especially that of the ketal carbon.

  十二个步骤就可以合成出在高蛇纹石A和B，酰基金葡糖醇中发现的独特的呋喃[2,3-b]色烯环系统。通过将合成化合物的NMR光谱与天然产物的NMR光谱进行比较，提出了相对立体化学，尤其是缩酮碳的立体化学。
• Late‐Stage Direct <i>o</i> ‐Alkenylation of Phenols by Pd ^II ‐Catalyzed C−H Functionalization
  作者：Yandong Dou、Kenry、Jiang Liu、Jianze Jiang、Qing Zhu

  DOI：10.1002/chem.201900530

  日期：2019.5.17

  phenol as a directing group, high regioselectivity, good substrate scope, mild reaction conditions, and high efficiency. To the best of our knowledge, this is the first example of a regioselective C−H alkenylation of unprotected phenols utilizing phenolic hydroxyl group as a directing group. The alkenylation of unprotected tyrosine and intramolecular cyclization are also successfully carried out under

  通过Pd II催化的直接C-H官能化已开发出未保护的酚的o-烯基化。这项工作以酚基团为导向基团，并实现了酚的位点选择性C-H键官能化，从而在60°C时以中等至极好的收率获得了相应的产品。该反应的优点包括使用苯酚作为指导基团进行前所未有的CH官能化，区域选择性高，底物范围广，反应条件温和且效率高。据我们所知，这是利用酚羟基作为指导基团对未保护的酚进行区域选择性CH烯基化的第一个例子。未保护的酪氨酸的烯基化和分子内环化也可以在该催化体系下以高收率成功进行。此外，
• Photocyclization reactions. Part 8. Synthesis of 2-quinolone, quinoline and coumarin derivatives using<i>trans-cis</i>isomerization by photoreaction
  作者：Takaaki Horaguchi、Nobuyuki Hosokawa、Kiyoshi Tanemura、Tsuneo Suzuki

  DOI：10.1002/jhet.5570390108

  日期：2002.1

  2-Quinolone 2, quinoline 3, coumarin (2H-1-benzopyran-2-one) 5, and 2H-1-benzopyran hemiacetal 6 were synthesized by photocyclization reaction of traans-o-aminocinnamoyl derivatives trans-1 and trans-o-hydroxycinnamoyl derivatives trans-4. The reaction proceeds through trans-cis isomerization followed by intramolecular cyclization.

  通过traans-o-氨基肉桂酰基衍生物trans - 1和trans-的光环化反应合成了2-喹诺酮2，喹啉3，香豆素（2 H -1-苯并吡喃-2-酮）5和2 H -1-苯并吡喃半缩醛6。ø -hydroxycinnamoyl衍生物反式- 4。反应通过反式-顺式异构化进行，然后进行分子内环化。
• Ethyl Cinnamate Derivatives as Promising High-Efficient Acaricides against &lt;i&gt;Psoroptes cuniculi&lt;/i&gt;: Synthesis, Bioactivity and Structure–Activity Relationship
  作者：Bingyu Zhang、Chao Lv、Weibo Li、Zhiming Cui、Dongdong Chen、Fangjun Cao、Fang Miao、Le Zhou

  DOI：10.1248/cpb.c14-00765

  日期：——

  This paper reported the synthesis, structure–activity relationship (SAR) and acaricidal activity in vitro against Psoroptes cuniculi, a mange mite, of 25 ethyl cinnamate derivatives. All target compounds were synthesized and elucidated by means of MS, 1H- and 13C-NMR analysis. The results showed that 24 out of 25 tested compounds at 1.0 mg/mL demonstrated acaricidal activity in varying degrees. Among them, 6, 15, 26, 27 and 30 showed significant activity with median lethal concentration values (LC50) of 89.3, 119.0, 39.2, 29.8 and 41.2 µg/mL, respectively, which were 2.1- to 8.3-fold the activity of ivermectin (LC50=247.4 µg/mL), a standard drug in the treatment of Psoroptes cuniculi. Compared with ivermectin, with a median lethal time value (LT50) of 8.9 h, 27 and 30 showed smaller LT50 values of 7.9 and 1.3 h, respectively, whereas 6, 15 and 26 showed slightly larger LT50 values of 10.6, 11.0 and 10.4 h at 4.5 µmol/mL. SARs showed that the presence of o-NO2 or m-NO2 on the benzene ring significantly improved the activity, whereas the introduction of a hydroxy, methoxy, acetoxy, methylenedioxy, bromo or chloro group reduced the activity. (E)-Cinnamates were more effective than their (Z)-isomer. Nevertheless, the carbon–carbon double bond in the acrylic ester moiety was proven not to be essential to improve the activity of cinnamic acid esters. Thus, the results strongly indicate that cinnamate derivatives, especially their dihydro derivatives, should be promising candidates or lead compounds for the development of novel acaricides for the effective control of animal or human acariasis.

  本研究报道了25种肉桂酸乙酯衍生物的合成、构效关系及其对兔疥螨的杀螨活性。所有目标化合物通过MS、1H-和13C-NMR进行了表征。结果表明,25个化合物中有24个在1.0mg/mL浓度下表现出不同程度的杀螨活性。其中,6、15、26、27和30号化合物显示出显著的活性,半数致死浓度值(LC50)分别为89.3、119.0、39.2、29.8和41.2μg/mL,分别是伊维菌素(LC50=247.4μg/mL)的2.1-8.3倍。与伊维菌素(半数致死时间LT50为8.9h)相比,27和30号化合物的LT50值更小,分别为7.9h和1.3h,而6、15和26号化合物的LT50值稍大,分别为10.6、11.0和10.4h(4.5μmol/mL)。构效关系表明,苯环上的邻硝基或间硝基显著提高了活性,而引入羟基、甲氧基、乙酰氧基、亚甲二氧基、溴或氯则降低了活性。(E)-肉桂酸酯比其(Z)-异构体更有效。然而,丙烯酸酯部分的碳-碳双键对于提高肉桂酸酯的活性并非必需。因此,结果强烈表明,肉桂酸酯衍生物,尤其是其二氢衍生物,应该是开发新型杀螨剂以有效控制人和动物螨病的极具潜力的候选物或先导化合物。
• Coumarins by Direct Annulation: β‐Borylacrylates as Ambiphilic C ₃ ‐Synthons
  作者：Max Wienhold、John J. Molloy、Constantin G. Daniliuc、Ryan Gilmour

  DOI：10.1002/anie.202012099

  日期：2021.1.11

  2‐halo‐phenol derivatives to generate structurally and electronically diverse coumarins. Key to this [3+3] disconnection is the BPin unit which serves a dual purpose as both a traceless linker for C(sp2)–C(sp2) coupling, and as a chromophore extension to enable inversion of the alkene geometry via selective energy transfer catalysis. Mild isomerisation is a pre‐condition to access 3‐substituted coumarins

  模块化β-硼基丙烯酸酯已被验证为可编程的、两亲性C 3 -合成子，可在2-卤代苯酚衍生物的级联成环中生成结构和电子多样化的香豆素。这种 [3+3] 断开的关键是 BPin 单元，它具有双重用途，既作为 C(sp 2 )–C(sp 2 ) 耦合的无痕连接子，又作为发色团延伸，通过选择性能量转移催化。轻度异构化是获得 3-取代香豆素的先决条件，并提供了分歧的手柄。该方法在含有这种古老化学型的代表性天然产物的合成中得到展示。公开了在 A 环上修饰的 π 扩展雌酮衍生物的简便进入，以证明该方法在生物测定开发或药物再利用中的潜力。