octadeca-9,10-dien-8-one | 624740-55-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: octadeca-9,10-dien-8-one
• CAS: 624740-55-2
• 化学式: C₁₈H₃₂O
• 分子量: 264.451
• InChiKey: GNHGAVJHLXDTEZ-UHFFFAOYSA-N

物化性质

• 沸点：
  368.6±9.0 °C(Predicted)
• 密度：
  0.839±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.99
• 重原子数：
  19.0
• 可旋转键数：
  13.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  甲基丙二酸二乙酯 、 octadeca-9,10-dien-8-one 在 potassium tert-butylate 作用下， 以 丙酮 为溶剂， 反应 0.17h， 以53%的产率得到(E)-10-(1,1-bis(ethoxycaronyl)ethyl)-10-octadecen-8-one
  参考文献：
  名称：

  Studies on t-BuOK-catalyzed Michael addition of 1,2-allenic ketones with 2-substituted diethyl malonates: highly selective synthesis of β,γ-unsaturated enones

  摘要：

  In this paper, we have demonstrated a facile nucleophilic addition of 2-substituted diethyl malonate to various substituted 1,2-allenic ketones to afford beta,gamma-unsaturated enones using a catalytic amount of t-BuOK as the base. The reaction usually completes within 10 min in acetone at room temperature. The stereoselectivity of the reaction with gamma-substituted allenic ketones is very high affording the beta,gamma-unsaturated E-enones. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2005.01.131
• 作为产物：
  描述：

  N,N-二甲基辛酰胺 、 癸-1,2-二烯 在 正丁基锂 作用下， 以 四氢呋喃 、 环己烷 为溶剂， 反应 2.0h， 以39%的产率得到octadeca-9,10-dien-8-one
  参考文献：
  名称：

  Studies on K₂CO₃-Catalyzed 1,4-Addition of 1,2-Allenic Ketones with Diethyl Malonate:  Controlled Selective Synthesis of β,γ-Unsaturated Enones and α-Pyrones

  摘要：

  The K2CO3 (10 mol %)-catalyzed 1,4-addition reaction of diethyl malonate with various substituted 1,2-allenic ketones leading to polyfunctionalized beta,gamma-unsaturated enones 3 or 4 was studied. With 3-unsubstituted 1-substituted-1,2-allenyl ketones, the highly selective formation of beta,gamma-unsaturated enones 4 was observed; with 1,2-allenyl ketones bearing one or two 3-substituents in the allenyl group, only beta,gamma-unsaturated enones 3 with an immigrated carbon-carbon double bond were produced; with 3-monosubstituted-1,2-allenyl ketones Z-beta,gamma-unsaturated enones 3 were formed with excellent stereoselectivity (E:Z > 96:4); with propadienyl ketones, mixtures of beta,gamma-unsaturated enones 3 and 4 were formed. alpha-Pyrone derivatives were synthesized via the K2CO3-catalyzed or -promoted reaction of 1,2-allenic ketones with diethyl malonate via a sequential Michael addition-carbon-carbon double bond migration-lactonization process.

  DOI：

  10.1021/jo034633i

文献信息

• Studies on t-BuOK-catalyzed Michael addition of 1,2-allenic ketones with 2-substituted diethyl malonates: highly selective synthesis of β,γ-unsaturated enones
  作者：Shengming Ma、Shichao Yu、Wenjian Qian

  DOI：10.1016/j.tet.2005.01.131

  日期：2005.4

  In this paper, we have demonstrated a facile nucleophilic addition of 2-substituted diethyl malonate to various substituted 1,2-allenic ketones to afford beta,gamma-unsaturated enones using a catalytic amount of t-BuOK as the base. The reaction usually completes within 10 min in acetone at room temperature. The stereoselectivity of the reaction with gamma-substituted allenic ketones is very high affording the beta,gamma-unsaturated E-enones. (c) 2005 Elsevier Ltd. All rights reserved.
• Studies on K₂CO₃-Catalyzed 1,4-Addition of 1,2-Allenic Ketones with Diethyl Malonate:  Controlled Selective Synthesis of β,γ-Unsaturated Enones and α-Pyrones
  作者：Shengming Ma、Shichao Yu、Shaohu Yin

  DOI：10.1021/jo034633i

  日期：2003.11.1

  The K2CO3 (10 mol %)-catalyzed 1,4-addition reaction of diethyl malonate with various substituted 1,2-allenic ketones leading to polyfunctionalized beta,gamma-unsaturated enones 3 or 4 was studied. With 3-unsubstituted 1-substituted-1,2-allenyl ketones, the highly selective formation of beta,gamma-unsaturated enones 4 was observed; with 1,2-allenyl ketones bearing one or two 3-substituents in the allenyl group, only beta,gamma-unsaturated enones 3 with an immigrated carbon-carbon double bond were produced; with 3-monosubstituted-1,2-allenyl ketones Z-beta,gamma-unsaturated enones 3 were formed with excellent stereoselectivity (E:Z > 96:4); with propadienyl ketones, mixtures of beta,gamma-unsaturated enones 3 and 4 were formed. alpha-Pyrone derivatives were synthesized via the K2CO3-catalyzed or -promoted reaction of 1,2-allenic ketones with diethyl malonate via a sequential Michael addition-carbon-carbon double bond migration-lactonization process.