2-tert-butyl-5-chloro-1-pentanol | 138542-08-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-tert-butyl-5-chloro-1-pentanol
• 英文别名: 2-tert-butyl-5-chloropentan-1-ol
• CAS: 138542-08-2
• 化学式: C₉H₁₉ClO
• 分子量: 178.702
• InChiKey: GDIRXHGHNKLHDH-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.66
• 重原子数：
  11.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  20.23
• 氢给体数：
  1.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  2-tert-butyl-5-chloro-1-pentanol 在 草酰氯 、 sodium hydride 、 三乙胺 、 sodium iodide 作用下， 以 丙酮 为溶剂， 反应 24.62h， 生成 tert-butyl 4-tert-butyl-7-iodo-2(E)-heptenoate
  参考文献：
  名称：

  Stereochemistry of metal-halogen exchange-initiated intramolecular conjugate addition reactions in the construction of 5-membered carbocycles

  摘要：

  The stereochemistry of some lithium-iodine exchange-initiated cyclization reactions of model omega-iodo, gamma-substituted activated olefins has been studied. The stereoselectivities of these anionic cyclization reactions have been found to be a function of the olefin activator employed, reaction conditions, Michael acceptor olefin geometry, the nature of the gamma-substituent, and, in some cases, the presence of additives. Cyclization reactions of iodides possessing E olefin geometry give a moderate preference for trans cyclopentane formation while Z olefin geometry leads to extremely high (> 300:1) trans product selectivity. Cyclization reactions of E olefins under radical conditions were found to be slightly more trans-selective than those observed under anionic conditions although Z olefin geometry again promotes very high trans product selectivity. The presence of the allylic methoxyl group in (E)-7d leads to cis selectivity under both anionic and radical conditions. Intramolecular complexation involving the reactive carbon center and the methoxyl group is suggested in both modes as a possible explanation for this cis product selectivity.

  DOI：

  10.1021/jo00031a031
• 作为产物：
  描述：

  ethyl 2-tert-butyl-5-chloropentanoate 在 二异丁基氢化铝 作用下， 以 正己烷 、 二氯甲烷 为溶剂， 反应 0.83h， 以89%的产率得到2-tert-butyl-5-chloro-1-pentanol
  参考文献：
  名称：

  Stereochemistry of metal-halogen exchange-initiated intramolecular conjugate addition reactions in the construction of 5-membered carbocycles

  摘要：

  The stereochemistry of some lithium-iodine exchange-initiated cyclization reactions of model omega-iodo, gamma-substituted activated olefins has been studied. The stereoselectivities of these anionic cyclization reactions have been found to be a function of the olefin activator employed, reaction conditions, Michael acceptor olefin geometry, the nature of the gamma-substituent, and, in some cases, the presence of additives. Cyclization reactions of iodides possessing E olefin geometry give a moderate preference for trans cyclopentane formation while Z olefin geometry leads to extremely high (> 300:1) trans product selectivity. Cyclization reactions of E olefins under radical conditions were found to be slightly more trans-selective than those observed under anionic conditions although Z olefin geometry again promotes very high trans product selectivity. The presence of the allylic methoxyl group in (E)-7d leads to cis selectivity under both anionic and radical conditions. Intramolecular complexation involving the reactive carbon center and the methoxyl group is suggested in both modes as a possible explanation for this cis product selectivity.

  DOI：

  10.1021/jo00031a031