(2R,7S)-7-ethyl-2-(4-nitrophenyl)-3-vinylideneoxepane | 1021489-79-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2R,7S)-7-ethyl-2-(4-nitrophenyl)-3-vinylideneoxepane
• CAS: 1021489-79-1
• 化学式: C₁₆H₁₉NO₃
• 分子量: 273.332
• InChiKey: OYUSHIHURCRHOT-HOTGVXAUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  20
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  55
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  (S)-9-(trimethylsilyl)non-7-yn-3-ol 、 对硝基苯甲醛 在 三氟甲磺酸三甲基硅酯 作用下， 以 乙醚 为溶剂， 以75%的产率得到(2R,7S)-7-ethyl-2-(4-nitrophenyl)-3-vinylideneoxepane
  参考文献：
  名称：

  Enantioselective route to 3-vinylidene tetrahydropyrans and 3-vinylidene oxepanes based on a silyl-Prins cyclization

  摘要：

  A general method has been developed for the asymmetric synthesis of 3-vinylidene tetrahydropyrans and 3-vinylidene oxepanes based on the Lewis acid-catalyzed intramolecular reactions of oxocarbenium ions with propargylsilanes. The observed excellent diastereoselectivity and a high asymmetric induction offer a new synthetic method with a wide scope and generality. (c) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2008.01.123

文献信息

• Enantioselective route to 3-vinylidene tetrahydropyrans and 3-vinylidene oxepanes based on a silyl-Prins cyclization
  作者：Bartłomiej Furman、Magdalena Dziedzic、Iwona Justyniak

  DOI：10.1016/j.tet.2008.01.123

  日期：2008.3

  A general method has been developed for the asymmetric synthesis of 3-vinylidene tetrahydropyrans and 3-vinylidene oxepanes based on the Lewis acid-catalyzed intramolecular reactions of oxocarbenium ions with propargylsilanes. The observed excellent diastereoselectivity and a high asymmetric induction offer a new synthetic method with a wide scope and generality. (c) 2008 Elsevier Ltd. All rights reserved.