5-Bromo-1-(tert-butyl-dimethyl-silanyl)-pentan-1-one | 135746-45-1

• 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: 5-Bromo-1-(tert-butyl-dimethyl-silanyl)-pentan-1-one
• 英文别名: 5-Bromo-1-[tert-butyl(dimethyl)silyl]pentan-1-one
• CAS: 135746-45-1
• 化学式: C₁₁H₂₃BrOSi
• 分子量: 279.293
• InChiKey: PDVQTPJYCYJKBQ-UHFFFAOYSA-N

物化性质

• 沸点：
  285.2±23.0 °C(Predicted)
• 密度：
  1.090±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.17
• 重原子数：
  14
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  5-Bromo-1-(tert-butyl-dimethyl-silanyl)-pentan-1-one 在 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 苯 为溶剂， 以80%的产率得到(9CI)-(环戊基氧基)(1,1-二甲基乙基)二甲基-硅烷
  参考文献：
  名称：

  Intramolecular free radical cyclizations using acylsilanes as radicalphiles

  摘要：

  Carbon radicals add intramolecularly to acylsilanes at the carbonyl carbon followed by radical Brook rearrangement to give silylated cyclopentanols or cyclohexanols in good yields.

  DOI：

  10.1016/0040-4039(91)80820-v
• 作为产物：
  描述：

  [2-(4-Bromo-butyl)-[1,3]dithian-2-yl]-tert-butyl-dimethyl-silane 在 Celite 、 三氟化硼乙醚 、 mercury(II) oxide 作用下， 以 四氢呋喃 、 水 为溶剂， 生成 5-Bromo-1-(tert-butyl-dimethyl-silanyl)-pentan-1-one
  参考文献：
  名称：

  Intramolecular free radical cyclizations using acylsilanes as radicalphiles

  摘要：

  Carbon radicals add intramolecularly to acylsilanes at the carbonyl carbon followed by radical Brook rearrangement to give silylated cyclopentanols or cyclohexanols in good yields.

  DOI：

  10.1016/0040-4039(91)80820-v

文献信息

• The Scope and Limitations of Intramolecular Radical Cyclizations of Acylsilanes with Alkyl, Aryl, and Vinyl Radicals
  作者：Sheng-Yueh Chang、Weir-Torn Jiaang、Chaur-Donp Cherng、Kuo-Hsiang Tang、Chih-Hao Huang、Yeun-Min Tsai

  DOI：10.1021/jo9711302

  日期：1997.12.1

  5-Exo cyclizations of primary and secondary radicals with acylsilanes successfully give cyclopentyl silyl ethers. The corresponding 6-exo cyclizations are sensitive to changes of the size of silyl groups. Secondary radicals undergo 6-exo cyclizations with acylsilanes more slowly. Reaction of aryl radical with acylsilane proceeds well for 5-exo cyclization but not for 6-exo cyclization. Vinyl radicals give best results in 5-exo cyclizations with acylsilanes but give low yields (similar to 30%) in 6-exo cyclizations. Intramolecular cyclizations of vinyl radicals with acylsilanes give enol silyl ethers regiospecifically.