2-乙酰基-4,4-二甲基环戊烷甲醛 | 155785-06-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2-乙酰基-4,4-二甲基环戊烷甲醛
• 英文名称: 4,4-dimethyl-1-(1-oxoethyl)-2-cyclopentanecarboxaldehyde
• 英文别名: 2-Acetyl-4,4-dimethylcyclopentane-1-carbaldehyde
• CAS: 155785-06-1
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: LRYUKFZOTVMCTL-UHFFFAOYSA-N

物化性质

• 沸点：
  237.4±33.0 °C(Predicted)
• 密度：
  1.019±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-乙酰基-4,4-二甲基环戊烷甲醛 在 四丁基氢氧化铵 氢氧化钾 作用下， 以 四氢呋喃 、 乙醚 为溶剂， 反应 18.0h， 以67%的产率得到(3aSR,6aSR)-5,5-dimethyl-1,3a,4,5,6,6a-hexahydro-1-pentalenone
  参考文献：
  名称：

  Intramolecular Anodic Olefin Coupling Reactions: A New Approach to the Synthesis of Angularly Fused, Tricyclic Enones

  摘要：

  A number of intramolecular anodic olefin coupling reactions have been examined in order to determine the feasibility of using a sequential electrochemical oxidation-aldol condensation approach for constructing polycyclic enones. Initially, substrates comprised of an aldehyde enol ether tethered to a ketone enol ether were examined. In a model study, it was shown that such a substrate could lead to a successful electrochemical oxidation-aldol condensation sequence. However, the difficulties associated with both the synthesis and the poor stability of the ketone enol ethers greatly reduced the potential utility of this approach. This problem was circumvented by taking advantage of the compatibility of allylsilane groups with the electrolysis reaction. In these examples, ozonolysis of the electrochemical cyclization product afforded the 1,4-dicarbonyl substrate needed for the aldol condensation. The use of the less reactive allylsilane group in the electrochemical reaction still allowed for the construction of quaternary carbons. Finally a pair of angularly fused, tricyclic enones were synthesized. The regiochemistry of the enone in the product could be controlled by the proper choice of the substrate for the electrolysis and manipulation of the resulting cyclized product.

  DOI：

  10.1021/jo00088a019
• 作为产物：
  描述：

  1,7-dimethoxy-4,4-dimethyl-(E,Z)-1,6-octadiene 在 2,6-二甲基吡啶 、 amberlyst-15 、 水 、 对甲苯磺酸 作用下， 以 丙酮 为溶剂， 反应 8.0h， 生成 2-乙酰基-4,4-二甲基环戊烷甲醛
  参考文献：
  名称：

  Intramolecular Anodic Olefin Coupling Reactions: A New Approach to the Synthesis of Angularly Fused, Tricyclic Enones

  摘要：

  A number of intramolecular anodic olefin coupling reactions have been examined in order to determine the feasibility of using a sequential electrochemical oxidation-aldol condensation approach for constructing polycyclic enones. Initially, substrates comprised of an aldehyde enol ether tethered to a ketone enol ether were examined. In a model study, it was shown that such a substrate could lead to a successful electrochemical oxidation-aldol condensation sequence. However, the difficulties associated with both the synthesis and the poor stability of the ketone enol ethers greatly reduced the potential utility of this approach. This problem was circumvented by taking advantage of the compatibility of allylsilane groups with the electrolysis reaction. In these examples, ozonolysis of the electrochemical cyclization product afforded the 1,4-dicarbonyl substrate needed for the aldol condensation. The use of the less reactive allylsilane group in the electrochemical reaction still allowed for the construction of quaternary carbons. Finally a pair of angularly fused, tricyclic enones were synthesized. The regiochemistry of the enone in the product could be controlled by the proper choice of the substrate for the electrolysis and manipulation of the resulting cyclized product.

  DOI：

  10.1021/jo00088a019

文献信息

• Intramolecular Anodic Olefin Coupling Reactions: A New Approach to the Synthesis of Angularly Fused, Tricyclic Enones
  作者：Luzviminda V. Tinao-Wooldridge、Kevin D. Moeller、Christine M. Hudson

  DOI：10.1021/jo00088a019

  日期：1994.5

  A number of intramolecular anodic olefin coupling reactions have been examined in order to determine the feasibility of using a sequential electrochemical oxidation-aldol condensation approach for constructing polycyclic enones. Initially, substrates comprised of an aldehyde enol ether tethered to a ketone enol ether were examined. In a model study, it was shown that such a substrate could lead to a successful electrochemical oxidation-aldol condensation sequence. However, the difficulties associated with both the synthesis and the poor stability of the ketone enol ethers greatly reduced the potential utility of this approach. This problem was circumvented by taking advantage of the compatibility of allylsilane groups with the electrolysis reaction. In these examples, ozonolysis of the electrochemical cyclization product afforded the 1,4-dicarbonyl substrate needed for the aldol condensation. The use of the less reactive allylsilane group in the electrochemical reaction still allowed for the construction of quaternary carbons. Finally a pair of angularly fused, tricyclic enones were synthesized. The regiochemistry of the enone in the product could be controlled by the proper choice of the substrate for the electrolysis and manipulation of the resulting cyclized product.