2-(2-oxo-3-cyclopentenyl)ethyl acetate | 223259-04-9

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 2-(2-oxo-3-cyclopentenyl)ethyl acetate
• CAS: 223259-04-9
• 化学式: C₉H₁₂O₃
• 分子量: 168.192
• InChiKey: WVMUBPSNVOUBAQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.08
• 重原子数：
  12.0
• 可旋转键数：
  3.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.56
• 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：

  2-(2-oxo-3-cyclopentenyl)ethyl acetate 在 palladium on activated charcoal 氢气 作用下， 以 乙酸乙酯 为溶剂， 20.0 ℃ 、101.32 kPa 条件下， 反应 2.0h， 以96%的产率得到2-(2-氧代-3-环戊基)乙酸乙酯
  参考文献：
  名称：

  Formal Synthesis of (±)-Mitsugashiwalactone and (±)-Isodihydronepetalactone from Norborn-5-en-2-one Involving Shapiro Reaction

  摘要：

  AbstractA formal synthesis of (±)‐mitsugashiwalactone (1) and (±)‐isodihydro nepetalactone (2) was accomplished. Baeyer‐Villiger lactonization of ketone 9 followed by acidic treatment led to the rearranged lactone 8, which underwent a series of functional group transformations to give cyclopentanone derivatives 19 and 20. Shapiro reaction on 21 and 22 in the presence of excess dry ice gave lactones 5 and 6. Lactones 5 and 6 previously have been converted to mitsugashiwalactone (1) and isodihydronepetalactone (2), respectively.

  DOI：

  10.1002/jccs.199900005
• 作为产物：
  描述：

  (±)-cis-5-(2-hydroxyethyl)cyclopent-2-enol 在 吡啶 、 Celite 、 pyridinium chlorochromate 作用下， 以 二氯甲烷 为溶剂， 反应 4.0h， 生成 2-(2-oxo-3-cyclopentenyl)ethyl acetate
  参考文献：
  名称：

  Formal Synthesis of (±)-Mitsugashiwalactone and (±)-Isodihydronepetalactone from Norborn-5-en-2-one Involving Shapiro Reaction

  摘要：

  AbstractA formal synthesis of (±)‐mitsugashiwalactone (1) and (±)‐isodihydro nepetalactone (2) was accomplished. Baeyer‐Villiger lactonization of ketone 9 followed by acidic treatment led to the rearranged lactone 8, which underwent a series of functional group transformations to give cyclopentanone derivatives 19 and 20. Shapiro reaction on 21 and 22 in the presence of excess dry ice gave lactones 5 and 6. Lactones 5 and 6 previously have been converted to mitsugashiwalactone (1) and isodihydronepetalactone (2), respectively.

  DOI：

  10.1002/jccs.199900005

文献信息

• Formal Synthesis of (±)-Mitsugashiwalactone and (±)-Isodihydronepetalactone from Norborn-5-en-2-one Involving Shapiro Reaction
  作者：Meng-Yang Chang、Nein-Chen Ciang

  DOI：10.1002/jccs.199900005

  日期：1999.2

  AbstractA formal synthesis of (±)‐mitsugashiwalactone (1) and (±)‐isodihydro nepetalactone (2) was accomplished. Baeyer‐Villiger lactonization of ketone 9 followed by acidic treatment led to the rearranged lactone 8, which underwent a series of functional group transformations to give cyclopentanone derivatives 19 and 20. Shapiro reaction on 21 and 22 in the presence of excess dry ice gave lactones 5 and 6. Lactones 5 and 6 previously have been converted to mitsugashiwalactone (1) and isodihydronepetalactone (2), respectively.