(2R,3R)-trans-2-(2,5-Octadiynyl)-3-undecyloxirane | 150822-81-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 环氧化物
• 英文名称: (2R,3R)-trans-2-(2,5-Octadiynyl)-3-undecyloxirane
• CAS: 150822-81-4
• 化学式: C₂₁H₃₄O
• 分子量: 302.5
• InChiKey: KLLWDEKWZYWLTQ-NHCUHLMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.87
• 重原子数：
  22.0
• 可旋转键数：
  11.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.81
• 拓扑面积：
  12.53
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  (2R,3R)-trans-2-(2,5-Octadiynyl)-3-undecyloxirane 在 Lindlar's catalyst 喹啉 、 氢气 作用下， 以 正戊烷 为溶剂， 反应 1.5h， 以58%的产率得到(Z,Z)-(2R,3R)-trans-2-(2,5-Octadienyl)-3-undecyloxirane
  参考文献：
  名称：

  Alkylative epoxide rearrangement. A stereospecific approach to chiral epoxide pheromones

  摘要：

  The alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates is applied to the synthesis of chiral epoxide pheromones. Attack at the terminal carbon atom of epoxy tosylates by lithioacetylenes and cyclization of the intermediate tosyloxy alcohols produces internal epoxides in high yield. The method is stereospecific: threo-epoxy tosylates give eL's-epoxides, and erythro-epoxy tosylates yield trans-epoxides. Several diastereomerically pure epoxides were prepared in high optical purity from chiral pool intermediates derived from sugars. Pheromone components prepared include (+/-)-cis-epoxyalkene 20 and both enantiomers of cis-epoxy diene 16, a female sex pheromone component of a number of lepidopteran species. These results demonstrate that alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates complements existing methods for stereoselective synthesis of epoxides, including the Payne rearrangement and Sharpless epoxidation.

  DOI：

  10.1021/jo00071a026
• 作为产物：
  描述：

  (2R,3R,S)-1,2,3-Tetradecanetriol 在 吡啶 、 正丁基锂 、 三氟化硼乙醚 、 potassium carbonate 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 为溶剂， 反应 124.5h， 生成 (2R,3R)-trans-2-(2,5-Octadiynyl)-3-undecyloxirane
  参考文献：
  名称：

  Alkylative epoxide rearrangement. A stereospecific approach to chiral epoxide pheromones

  摘要：

  The alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates is applied to the synthesis of chiral epoxide pheromones. Attack at the terminal carbon atom of epoxy tosylates by lithioacetylenes and cyclization of the intermediate tosyloxy alcohols produces internal epoxides in high yield. The method is stereospecific: threo-epoxy tosylates give eL's-epoxides, and erythro-epoxy tosylates yield trans-epoxides. Several diastereomerically pure epoxides were prepared in high optical purity from chiral pool intermediates derived from sugars. Pheromone components prepared include (+/-)-cis-epoxyalkene 20 and both enantiomers of cis-epoxy diene 16, a female sex pheromone component of a number of lepidopteran species. These results demonstrate that alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates complements existing methods for stereoselective synthesis of epoxides, including the Payne rearrangement and Sharpless epoxidation.

  DOI：

  10.1021/jo00071a026

文献信息

• Alkylative epoxide rearrangement. A stereospecific approach to chiral epoxide pheromones
  作者：Thomas W. Bell、James A. Ciaccio

  DOI：10.1021/jo00071a026

  日期：1993.9

  The alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates is applied to the synthesis of chiral epoxide pheromones. Attack at the terminal carbon atom of epoxy tosylates by lithioacetylenes and cyclization of the intermediate tosyloxy alcohols produces internal epoxides in high yield. The method is stereospecific: threo-epoxy tosylates give eL's-epoxides, and erythro-epoxy tosylates yield trans-epoxides. Several diastereomerically pure epoxides were prepared in high optical purity from chiral pool intermediates derived from sugars. Pheromone components prepared include (+/-)-cis-epoxyalkene 20 and both enantiomers of cis-epoxy diene 16, a female sex pheromone component of a number of lepidopteran species. These results demonstrate that alkylative rearrangement of 1,2-epoxy-3-alkanol tosylates complements existing methods for stereoselective synthesis of epoxides, including the Payne rearrangement and Sharpless epoxidation.