(-)-(2R)-1-Bromo-2-((tert-butyldimethylsiloxy)methyl)butane | 157478-98-3

• 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: (-)-(2R)-1-Bromo-2-((tert-butyldimethylsiloxy)methyl)butane
• 英文别名: [(2R)-2-(bromomethyl)butoxy]-tert-butyl-dimethylsilane
• CAS: 157478-98-3
• 化学式: C₁₁H₂₅BrOSi
• 分子量: 281.308
• InChiKey: FJVVXXFMVIZVJC-JTQLQIEISA-N

物化性质

• 沸点：
  253.7±23.0 °C(predicted)
• 密度：
  1.058±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.43
• 重原子数：
  14
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (-)-(2R)-1-Bromo-2-((tert-butyldimethylsiloxy)methyl)butane 在 4-二甲氨基吡啶 、 溶剂黄146 、 三乙胺 、 N,N'-二环己基碳二亚胺 、 lithium bromide 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 反应 21.0h， 生成 (+)-Ethyl (E)-3--N-<2-(3-indolyl)ethyl>carbamoyl>prop-2-enoate
  参考文献：
  名称：

  Asymmetric Total Synthesis of Tacamonine (Pseudovincamone I) via Radical Cyclization

  摘要：

  The radical cyclizations of (+/-)-(E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoates 11 and 12 and (+/-)-ethyl (E)-3-{N-[2-(bromomethyl)butyl]-N-[2-(3-indolyl)ethyl]carbamoyl} prop-2-enoate (25) were carried out with (TMS)(3)SiH or Bu(3)SnH in the presence of AIBN. (-)-(2S)-2-((tert-Butyldimethylsilyloxy)methyl)butan-1-ol (6), which was prepared by two different methods, was converted into (+)-25. The radical cyclization of(+)-25 produced piperidinone 18 as a diastereomeric mixture, which was transformed into tacamonine (1).

  DOI：

  10.1021/jo00097a037
• 作为产物：
  描述：

  (-)-(2S)-2-((tert-Butyldimethylsiloxy)methyl)butan-1-ol 在 三乙胺 、 lithium bromide 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 4.0h， 生成 (-)-(2R)-1-Bromo-2-((tert-butyldimethylsiloxy)methyl)butane
  参考文献：
  名称：

  Asymmetric Total Synthesis of Tacamonine (Pseudovincamone I) via Radical Cyclization

  摘要：

  The radical cyclizations of (+/-)-(E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoates 11 and 12 and (+/-)-ethyl (E)-3-{N-[2-(bromomethyl)butyl]-N-[2-(3-indolyl)ethyl]carbamoyl} prop-2-enoate (25) were carried out with (TMS)(3)SiH or Bu(3)SnH in the presence of AIBN. (-)-(2S)-2-((tert-Butyldimethylsilyloxy)methyl)butan-1-ol (6), which was prepared by two different methods, was converted into (+)-25. The radical cyclization of(+)-25 produced piperidinone 18 as a diastereomeric mixture, which was transformed into tacamonine (1).

  DOI：

  10.1021/jo00097a037

文献信息

• Asymmetric Total Synthesis of Tacamonine (Pseudovincamone I) via Radical Cyclization
  作者：Masataka Ihara、Fumihito Setsu、Miyuki Shohda、Nobuaki Taniguchi、Yuji Tokunaga、Keiichiro Fukumoto

  DOI：10.1021/jo00097a037

  日期：1994.9

  The radical cyclizations of (+/-)-(E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoates 11 and 12 and (+/-)-ethyl (E)-3-N-[2-(bromomethyl)butyl]-N-[2-(3-indolyl)ethyl]carbamoyl} prop-2-enoate (25) were carried out with (TMS)(3)SiH or Bu(3)SnH in the presence of AIBN. (-)-(2S)-2-((tert-Butyldimethylsilyloxy)methyl)butan-1-ol (6), which was prepared by two different methods, was converted into (+)-25. The radical cyclization of(+)-25 produced piperidinone 18 as a diastereomeric mixture, which was transformed into tacamonine (1).