ethyl 2-[(4-chlorophenyl)ethyl]-3-oxobutanoate | 92294-86-5

• 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: ethyl 2-[(4-chlorophenyl)ethyl]-3-oxobutanoate
• 英文别名: ethyl 2-(4-chlorophenethyl)-3-oxo-butanoate；3-Aethoxycarbonyl-5-(4-chlor-phenyl)-pentan-2-on；Ethyl 2-[2-(4-chlorophenyl)ethyl]-3-oxobutanoate
• CAS: 92294-86-5
• 化学式: C₁₄H₁₇ClO₃
• 分子量: 268.74
• InChiKey: JCXYQNWNWGZHMW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  18
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  ethyl 2-[(4-chlorophenyl)ethyl]-3-oxobutanoate 在 硫酸 作用下， 生成 7-chloro-1-methyl-3,4-dihydronaphthalene-2-carboxylic acid
  参考文献：
  名称：

  1-Methyl-7-halo-2-naphthalenecarboxylic Acid Derivatives

  摘要：

  DOI：

  10.1021/jo01031a001
• 作为产物：
  描述：

  4-氯苯乙醇 在 硫酸 、 氢溴酸 、 sodium ethanolate 作用下， 生成 ethyl 2-[(4-chlorophenyl)ethyl]-3-oxobutanoate
  参考文献：
  名称：

  1-Methyl-7-halo-2-naphthalenecarboxylic Acid Derivatives

  摘要：

  DOI：

  10.1021/jo01031a001

文献信息

• Pyrido[1,2-<i>a</i>]benzimidazole-Based Agents Active Against Tuberculosis (TB), Multidrug-Resistant (MDR) TB and Extensively Drug-Resistant (XDR) TB
  作者：Marco Pieroni、Suresh K. Tipparaju、Shichun Lun、Yang Song、A. Willem Sturm、William R. Bishai、Alan P. Kozikowski

  DOI：10.1002/cmdc.201000490

  日期：2011.2.7

  The struggle against tuberculosis (TB) is still far from over. TB, caused by Mycobacterium tuberculosis, is one of the deadliest infections worldwide. Co‐infection with human immunodeficiency virus (HIV) and the emergence of multidrug‐resistant tuberculosis (MDR‐TB) and extensively drug‐resistant tuberculosis (XDR‐TB) strains have further increased the burden for this disease. Herein, we report the

  抗击结核病的斗争还远未结束。结核病由结核分枝杆菌引起，是全世界最致命的感染之一。人类免疫缺陷病毒（HIV）的合并感染以及耐多药结核病（MDR-TB）和广泛耐药结核病（XDR-TB）菌株的出现进一步加重了该病的负担。在此，我们报告了2-(4-氯苄基)-3-甲基-1-氧代-1 H ,5 H -吡啶并[1,2- a ]苯并咪唑-4-甲腈作为有效抗结核药物的发现及其结构该分子的修饰导致类似物具有更高的效力和更低的毒性。许多这些衍生物在亚微摩尔浓度下也具有对抗耐药结核菌株的活性，并且对 Vero 细胞没有明显的毒性，从而强调了它们作为开发新抗结核药物的新型支架的价值。
• Cyclization of Arylacetoacetates to Indene and Dihydronaphthalene Derivatives in Strong Acids. Evidence for Involvement of Further Protonation of O,O-Diprotonated β-Ketoester, Leading to Enhancement of Cyclization
  作者：Hiroaki Kurouchi、Hiromichi Sugimoto、Yuko Otani、Tomohiko Ohwada

  DOI：10.1021/ja908749u

  日期：2010.1.20

  The chemical features, such as substrate stability, product distribution, and substrate generality, and the reaction mechanism of Bronsted superacid-catalyzed cyclization reactions of aromatic ring-containing acetoacetates (beta-ketoesters) were examined in detail. While two types of carbonyl cyclization are possible, i.e., keto cyclization and ester cyclization, the former was found to take place exclusively. The reaction constitutes an efficient method to synthesize indene and 3,4-dihydronapthalene derivatives. Acid-base titration monitored with C-13 NMR spectroscopy showed that the acetoacetates are fully O-1,O-3-diprotonated at H-0 = -11. While the five-membered ring cyclization of the arylacetoacetates proceeded slowly at H-0 = -11, a linear increase in the rate of the cyclization was found with increasing acidity in the high acidity region of H-0 = -11.8 to -13.3. Therefore, the O-1,O-3-diprotonated acetoacetates exhibited some cyclizing reactivity, but they are not the reactive intermediates responsible for the acceleration of the cyclization in the high acidity region. The reactive cationic species might be formed by further protonation (or protosolvation) of the O-1,O-3-diprotonated acetoacetates; i.e., they may be tricationic species. Thermochemical data on the acid-catalyzed cyclization of the arylacetoacetates showed that the activation energy is decreased significantly as compared with that of the related acid-catalyzed cyclization reaction of a compound bearing a single functional group, such as a ketone. These findings indicate that intervention of the trication contributes to the activation of the cyclization of arylacetoacetates in strong acid, and the electron-withdrawing nature of the O-protonated ester functionality significantly increases the electrophilicity of the ketone moiety.
• METHOD FOR PURIFYING PYRUVIC ACID COMPOUNDS
  申请人：SUMITOMO CHEMICAL COMPANY LIMITED

  公开号：EP0937703B1

  公开（公告）日：2003-05-21
• US6348617B1
  申请人：——

  公开号：US6348617B1

  公开（公告）日：2002-02-19