[(Triethylsilyl)methylene]cyclopentane | 216985-69-2

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: [(Triethylsilyl)methylene]cyclopentane
• 英文别名: cyclopentylidenemethyl(triethyl)silane
• CAS: 216985-69-2
• 化学式: C₁₂H₂₄Si
• 分子量: 196.408
• InChiKey: QFEZMEPRCSAPEB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.53
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  (dibromomethylene)cyclopentane 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 8.33h， 生成 [(Triethylsilyl)methylene]cyclopentane
  参考文献：
  名称：

  Generation of Cycloalkylidene Carbenes via Exo-Type Cyclization of Alkynyllithiums Bearing Remote Leaving Group

  摘要：

  The reaction of 5-hexynyl tosylate (3a) with alkynyllithium (RC=CLi; R Ph, TMS) gives enynes 5 and 6. The reaction proceeds through a mechanism involving a novel exo-type cyclization of 6-lithiod-hexynyl tosylate to form cyclopentylidene carbene. Enyne 6 is produced by the addition of RC=CLi to the carbene, whereas rearrangement of the carbene to cyclohexyne followed by carbolithiation with RC=CLi gives enyne 5. The formation of cyclopentylidene carbene and cyclohexyne as intermediates is clearly demonstrated by trapping experiments with cyclohexene land triethylsilane) and with 1,3-diphenylisobenzofuran, respectively. Alkynyllithiums derived from 3-butynyl and 6-heptynyl p-fluorobenzenesulfonates (19a,b) undergo a similar exo-type cyclization to give cyclopropylidene and cyclohexylidene carbenes, respectively.

  DOI：

  10.1021/jo981411p