(+/-)-(2R,3R)-2,3-epoxy-2-methyl-1-nonanol | 162264-78-0

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: (+/-)-(2R,3R)-2,3-epoxy-2-methyl-1-nonanol
• 英文别名: ((2S,3S)-3-Hexyl-2-methyl-oxiranyl)-methanol
• CAS: 162264-78-0
• 化学式: C₁₀H₂₀O₂
• 分子量: 172.268
• InChiKey: RMTGPZPWWCPFDA-UWVGGRQHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.11
• 重原子数：
  12.0
• 可旋转键数：
  6.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  32.76
• 氢给体数：
  1.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  (+/-)-(2R,3R)-2,3-epoxy-2-methyl-1-nonanol 在 lead(IV) acetate 、 titanium(IV) isopropylate 作用下， 以 苯 为溶剂， 反应 3.25h， 生成 (1R)-1-Acetylheptyl (phenylthio)acetate
  参考文献：
  名称：

  Stereoselective Synthesis of Highly Substituted .gamma.-Lactones and Butenolides by Intramolecular Michael Addition of Enantiomerically Enriched .gamma.-[(Phenylthio)acyl]oxy .alpha.,.beta.-Unsaturated Esters

  摘要：

  The synthesis of polysubstituted gamma-lactones by the base-induced cyclization of enantiomerically enriched gamma-((phenylthio)acyl)oxy alpha,beta-unsaturated esters obtained from 2,3-epoxy alcohols is described. The procedure is highly stereoselective and compatible with a wide range of functionalities (ester, tetrahydropyranyl ether, silyl ether, etc.). Varying degrees of substitution, including quaternary centers, in the final gamma-lactone were synthesized with excellent stereoselectivity. Useful functional interconversions were successfully demonstrated, in particular those resulting in butenolides. By the use of AM1 it was concluded that the intramolecular Michael reaction can be described as a kinetically controlled reaction in which the relative stability of the transition states for all possible final configurations led to geometries in agreement with the experimental results.

  DOI：

  10.1021/jo00095a022
• 作为产物：
  描述：

  Ethyl 2-methyl-2-nonenoat 在 二异丁基氢化铝 作用下， 生成 (+/-)-(2R,3R)-2,3-epoxy-2-methyl-1-nonanol
  参考文献：
  名称：

  Stereoselective Synthesis of Highly Substituted .gamma.-Lactones and Butenolides by Intramolecular Michael Addition of Enantiomerically Enriched .gamma.-[(Phenylthio)acyl]oxy .alpha.,.beta.-Unsaturated Esters

  摘要：

  The synthesis of polysubstituted gamma-lactones by the base-induced cyclization of enantiomerically enriched gamma-((phenylthio)acyl)oxy alpha,beta-unsaturated esters obtained from 2,3-epoxy alcohols is described. The procedure is highly stereoselective and compatible with a wide range of functionalities (ester, tetrahydropyranyl ether, silyl ether, etc.). Varying degrees of substitution, including quaternary centers, in the final gamma-lactone were synthesized with excellent stereoselectivity. Useful functional interconversions were successfully demonstrated, in particular those resulting in butenolides. By the use of AM1 it was concluded that the intramolecular Michael reaction can be described as a kinetically controlled reaction in which the relative stability of the transition states for all possible final configurations led to geometries in agreement with the experimental results.

  DOI：

  10.1021/jo00095a022

文献信息

• Stereospecific Alkyl and Alkynyl Substitution Reactions of Epoxy Sulfides with Organoaluminums with Double Inversion of the Configuration
  作者：Minoru Sasaki、Keiji Tanino、Masaaki Miyashita

  DOI：10.1021/jo010240c

  日期：2001.8.1

  A regioselective and stereospecific substitution reaction of 1-(phenylthio)-2,3-epoxyalkanes was achieved by using organoaluminum reagents as a nucleophile. Under the influence of trimethyl- or triethylaluminum, a 1-(phenylthio)-2,3-epoxyalkane underwent substitution at the C2 position to give a product with retention of the configuration. The reaction proceeds through an episulfonium ion intermediate

  通过使用有机铝试剂作为亲核试剂，实现了1-（苯硫基）-2,3-环氧烷烃的区域选择性和立体选择性取代反应。在三甲基铝或三乙基铝的影响下，在C2位置对1-（苯硫基）-2,3-环氧烷烃进行取代，得到保留构型的产物。该反应通过epi磺酸盐离子中间体进行，生成中间体构型两次反转的C2-取代产物。还通过与二甲基[2-（三甲基甲硅烷基）乙炔基]铝在二氯甲烷中反应来完成炔基的引入。