N-Ethylchinolon-2-carbonsaeureethylester | 90033-67-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: N-Ethylchinolon-2-carbonsaeureethylester
• 英文别名: ethyl 1-ethyl-4-oxo-1,4-dihydroquinoline-2-carboxylate；1-ethyl-4-oxo-1,4-dihydroquinoline-2-carboxylic acid ethyl ester；Ethyl 1-ethyl-4-oxoquinoline-2-carboxylate
• CAS: 90033-67-3
• 化学式: C₁₄H₁₅NO₃
• 分子量: 245.278
• InChiKey: DSRTZWNQDADHQJ-UHFFFAOYSA-N

物化性质

• 熔点：
  83.5-84.5 °C(Solv: ethyl ether (60-29-7))
• 沸点：
  354.3±42.0 °C(Predicted)
• 密度：
  1.186±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  46.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4-(2-Ethylamino-phenyl)-2,4-dioxo-butyric acid ethyl ester 在 盐酸 作用下， 生成 N-Ethylchinolon-2-carbonsaeureethylester
  参考文献：
  名称：

  A New Efficient Route to 4-Oxo-1,4-dihydroquinoline-2-carboxylic Esters

  摘要：

  DOI：

  10.1055/s-1984-30762

文献信息

• Alkylation of 2- and 3-alkoxycarbonyl-4-quinolinones. DFT study on the regioselectivity
  作者：María S. Shmidt、Pau Arroyo Mañez、Carlos A. Stortz、Isabel A. Perillo、Daniel Vega、María M. Blanco

  DOI：10.1016/j.molstruc.2016.08.057

  日期：2017.1

  O-alkylated products. The behavior in basic medium of compounds 1 differs from the 3-alkoxycarbonyl-4-quinolinones (4) isomers suggesting that the position of the carboxylate group determines the regioselectivity of the reaction. DFT calculations allow us to conclude that for 3-alkoxycarbonyl-4-quinolinones, the N-alkylation would be thermodynamically and kinetically favored. But for 2-alkoxycarbonyl-4-quinolinones

  摘要 2-烷氧基羰基-4-喹啉酮(1) 与多种烷基化试剂在不同条件下反应，生成相应的O-烷基化产物。化合物 1 在碱性介质中的行为不同于 3-alkoxycarbonyl-4-quinolinones (4) 异构体，表明羧酸根的位置决定了反应的区域选择性。DFT 计算使我们得出结论，对于 3-烷氧基羰基-4-喹啉酮，N-烷基化在热力学和动力学上都是有利的。但是对于 2-烷氧基羰基-4-喹啉酮，环的 2-位侧链阻止了与连续杂原子的平面近似，从而导致更有利的 O-烷基化过渡态。O-烷基化产物的晶体结构由单晶 X 射线衍射测定。
• Facile synthesis of 4-quinolone derivatives via one-pot cascade reaction under transition-metal-free conditions
  作者：Chao Huang、Jia-Hui Guo、Huang-Mei Fu、Ming-Long Yuan、Li-Juan Yang

  DOI：10.1016/j.tetlet.2015.04.060

  日期：2015.6

  A practical and efficient strategy has been described for the preparation of 4-quinolone derivatives. Using commercially available diethyl acetylenedicarboxylate and aromatic amines as starting materials, the synthetic protocol has been achieved and afforded the product via hydroamination at room temperature followed by PPA-catalyzed intramolecular ring closure. The products can be easily obtained in high yields. Conditions and mechanism of the reaction have also been investigated. This protocol is environmentally friendly and transition-metal-free, with advantages including short reaction time, convenient operation, and mild reaction conditions. (C) 2015 Elsevier Ltd. All rights reserved.