2,2-dimethyl-4-(2-phenylsulfanyl-but-3-enyl)-[1,3]dioxolane | 792966-26-8

• 分子结构分类: 有机化合物 - 有机硫化合物 - 硫醚类
• 英文名称: 2,2-dimethyl-4-(2-phenylsulfanyl-but-3-enyl)-[1,3]dioxolane
• 英文别名: 2,2-dimethyl-4-(2-phenylsulfanylbut-3-enyl)-1,3-dioxolane
• CAS: 792966-26-8
• 化学式: C₁₅H₂₀O₂S
• 分子量: 264.389
• InChiKey: XBLPUFJDQMOSKB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  18
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  43.8
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  三甲基氯硅烷 、 2,2-dimethyl-4-(2-phenylsulfanyl-but-3-enyl)-[1,3]dioxolane 在 LiDBB 作用下， 以 四氢呋喃 为溶剂， 以63%的产率得到(E)-trimethyl[4-(2,2-dimethyl-1,3-dioxolan-4-yl)but-2-enyl]silane
  参考文献：
  名称：

  Synthesis of Allylsilanes by Reductive Lithiation of Thioethers

  摘要：

  Although much work in reductive lithiation has been done, the utilization of allylthioethers bearing various substituents to prepare allylsilanes has not been explored. The main reason clearly stems from the anticipated lack of regioselectivity. We describe herein the first study on the regioselectivity of the reductive silylation involving dissymmetric allylthioethers. We surveyed a broad spectrum of parameters and showed that this process displays a great dependence of the reaction conditions. We also discovered that an electron transporter, DBB or naphthalene, can cleave THF at room temperature by sonication, to generate a strong base, 4-lithiobutoxide. This feature was successfully exploited to the straightforward synthesis of bis-silanes in one pot. Examples are provided for maximizing both the chemical yield and the regioselectivity of the reductive silylation through the tuning of the reaction conditions. By changing these conditions, several allylsilanes can be selectively synthesized from one thioether.

  DOI：

  10.1021/jo049237u
• 作为产物：
  描述：

  苯硫酚 在 正丁基锂 、 potassium tert-butylate 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 8.5h， 生成 2,2-dimethyl-4-(2-phenylsulfanyl-but-3-enyl)-[1,3]dioxolane
  参考文献：
  名称：

  Synthesis of Allylsilanes by Reductive Lithiation of Thioethers

  摘要：

  Although much work in reductive lithiation has been done, the utilization of allylthioethers bearing various substituents to prepare allylsilanes has not been explored. The main reason clearly stems from the anticipated lack of regioselectivity. We describe herein the first study on the regioselectivity of the reductive silylation involving dissymmetric allylthioethers. We surveyed a broad spectrum of parameters and showed that this process displays a great dependence of the reaction conditions. We also discovered that an electron transporter, DBB or naphthalene, can cleave THF at room temperature by sonication, to generate a strong base, 4-lithiobutoxide. This feature was successfully exploited to the straightforward synthesis of bis-silanes in one pot. Examples are provided for maximizing both the chemical yield and the regioselectivity of the reductive silylation through the tuning of the reaction conditions. By changing these conditions, several allylsilanes can be selectively synthesized from one thioether.

  DOI：

  10.1021/jo049237u