4-hydroxy-5-ethylcoumarin | 252567-44-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 4-hydroxy-5-ethylcoumarin
• 英文别名: 5-ethyl-4-hydroxy-2H-chromen-2-one；5-ethyl-4-hydroxychromen-2-one
• CAS: 252567-44-5
• 化学式: C₁₁H₁₀O₃
• 分子量: 190.199
• InChiKey: FGOLZKOLPFCCFQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• 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：

  3-甲基-2-丁烯醛 、 4-hydroxy-5-ethylcoumarin 在 ytterbium(III) triflate 作用下， 以 乙腈 为溶剂， 反应 3.0h， 以87%的产率得到methylbothrioclinin
  参考文献：
  名称：

  A Straightforward Entry into Polyketide Monoprenylated Furanocoumarins and Pyranocoumarins

  摘要：

  A regioselective synthesis of 5-methyl- and 5-ethyl-4-hydroxycoumarin (Ib and Ic, respectively) is described. Starting from these compounds, several prenylated polyketide coumarins of limited availability from natural sources and important taxonomic relevance were prepared.

  DOI：

  10.1021/np990241o
• 作为产物：
  描述：

  3-(2-Ethyl-6-hydroxy-phenyl)-3-oxo-propionic acid tert-butyl ester 在 三氟乙酸 作用下， 反应 4.0h， 生成 4-hydroxy-5-ethylcoumarin
  参考文献：
  名称：

  A Straightforward Entry into Polyketide Monoprenylated Furanocoumarins and Pyranocoumarins

  摘要：

  A regioselective synthesis of 5-methyl- and 5-ethyl-4-hydroxycoumarin (Ib and Ic, respectively) is described. Starting from these compounds, several prenylated polyketide coumarins of limited availability from natural sources and important taxonomic relevance were prepared.

  DOI：

  10.1021/np990241o

文献信息

• A Straightforward Entry into Polyketide Monoprenylated Furanocoumarins and Pyranocoumarins
  作者：Giovanni Appendino、Giancarlo Cravotto、Giovanni B. Giovenzana、Giovanni Palmisano

  DOI：10.1021/np990241o

  日期：1999.12.1

  A regioselective synthesis of 5-methyl- and 5-ethyl-4-hydroxycoumarin (Ib and Ic, respectively) is described. Starting from these compounds, several prenylated polyketide coumarins of limited availability from natural sources and important taxonomic relevance were prepared.

表征谱图