ethyl 2--3-oxopentanoate | 144477-71-4

• 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--3-oxopentanoate
• CAS: 144477-71-4
• 化学式: C₁₉H₁₈F₂O₃
• 分子量: 332.347
• InChiKey: WBUFKHZJAXODST-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.87
• 重原子数：
  24.0
• 可旋转键数：
  6.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  43.37
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  ethyl 2--3-oxopentanoate 在 sodium hydroxide 作用下， 以70%的产率得到4,4-bis(4-fluorophenyl)-2-butanone
  参考文献：
  名称：

  Synthesis and histamine H2 agonistic activity of arpromidine analogues: replacement of the pheniramine-like moiety by non-heterocyclic groups

  摘要：

  Analogues of the potent histamine H-2 agonist arpromidine, characterized by non-heterocyclic groups (phenyl, cyclo-hexyl, alkyl) instead of the pheniramine-like portion, were prepared and tested for their H-2 agonistic and H-1 antagonistic activity in the isolated guinea pig right atrium and ileum, respectively. In the diphenylpropylguanidine series an increase in H-2 agonistic potency resulted from mono- or difluorination at one or both phenyl rings in the meta and/or para position (pD2 less-than-or-equal-to 7.75 vs pD2 = 7.15 for the unsubstituted parent compound). Compounds chlorinated at both phenyl rings were considerably less potent. Highest combined H-2 agonistic/H-1 antagonistic potency was found in the 4-fluorophenyl series. The arpromidine analogue with cyclohexyl and methyl group instead of phenyl and pyridine ring proved to be 30 times more potent than histamine in the atrium. The H-1 antagonistic potency in cyclohexyl compounds was lower than in the diaryl series. Thus, aromatic rings appear not to be required for high H-2 agonistic potency but are useful for combined H-2 agonistic/H-1 antagonistic activity.

  DOI：

  10.1016/0223-5234(92)90145-q
• 作为产物：
  描述：

  4,4'-二氟二苯甲醇 、 乙酰乙酸乙酯 在 三氟甲磺酸三甲基硅酯 作用下， 以 硝基甲烷 为溶剂， 以70%的产率得到ethyl 2--3-oxopentanoate
  参考文献：
  名称：

  使用TMSOTf催化剂对β-二羰基化合物和4-羟基香豆素进行苯甲酸酯化：一种简单，温和且有效的方法

  摘要：

  使用三甲基甲硅烷基三氟甲磺酸盐作为有效催化剂，可以用多种苄醇直接进行1,3-二羰基化合物和4-羟基香豆素的苄基化反应。反应在室温下在非常温和的条件下进行，以良好至优异的产率提供了所需的产物。

  DOI：

  10.1016/j.tetlet.2010.08.019

文献信息

• Fe(ClO4)3·×H2O-Catalyzed direct C–C bond forming reactions between secondary benzylic alcohols with different types of nucleophiles
  作者：Ponnaboina Thirupathi、Sung Soo Kim

  DOI：10.1016/j.tet.2010.02.063

  日期：2010.4

  mild and efficient Fe(ClO4)3·×H2O-catalyzed direct C–C bond coupling reactions of 1,3-dicarbonyl compounds, electron-rich arenes and heteroarenes and 4-hydroxycoumarin with secondary benzylic alcohols have been described. The benzylation of electron-rich arenes and heteroarenes leads to the synthesis of bis-symmetrical triarylmethanes. The present method is also applied to synthesis of an anti-coagulant

  已经描述了温和有效的Fe（ClO 4）3 ·×H 2 O催化的1,3-二羰基化合物，富电子芳烃和杂芳烃以及4-羟基香豆素与仲苄醇的直接C-C键偶联反应。富电子芳烃和杂芳烃的苄基化导致双对称三芳基甲烷的合成。本发明的方法也适用于合成一个的抗-coagulant化合物，4-羟基-3-（1,2,3,4-四氢萘-1-基）-2- ħ从市场上可买到的底物中得到-铬-2--2-酮（香豆基（B）），产率为85％。该协议的优点是范围广，条件温和，使用廉价的催化剂以及操作简便，因为水是唯一的副产品。