tert-Butyl-((2S,5R,6R,11S)-11-iodo-5-methoxy-1,7-dioxa-spiro[5.5]undec-2-ylmethoxy)-diphenyl-silane | 203172-31-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: tert-Butyl-((2S,5R,6R,11S)-11-iodo-5-methoxy-1,7-dioxa-spiro[5.5]undec-2-ylmethoxy)-diphenyl-silane
• 英文别名: tert-butyl-[[(2S,5R,6R,11S)-11-iodo-5-methoxy-1,7-dioxaspiro[5.5]undecan-2-yl]methoxy]-diphenylsilane
• CAS: 203172-31-0
• 化学式: C₂₇H₃₇IO₄Si
• 分子量: 580.578
• InChiKey: COOHSFBOPQEWOY-CIMCOABOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.07
• 重原子数：
  33
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  36.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  tert-Butyl-((2S,5R,6R,11S)-11-iodo-5-methoxy-1,7-dioxa-spiro[5.5]undec-2-ylmethoxy)-diphenyl-silane 在 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 苯 为溶剂， 反应 0.58h， 以80%的产率得到tert-Butyl-((2S,5R,6S)-5-methoxy-1,7-dioxa-spiro[5.5]undec-2-ylmethoxy)-diphenyl-silane
  参考文献：
  名称：

  Syntheses of Chiral Dispiroacetals from Carbohydrates

  摘要：

  The syntheses of trioxadispiroacetals from carbohydrates are described. (5R,7S,13R)-13-Methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (23) and (5S,7S,13R)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (24) were prepared starting from D-galactose. The construction of the lateral tetrahydrofuran and tetrahydropyran rings was realized by homologation at C-1 and C-6 by appropriate tethers possessing a terminal primary alcohol. The cyclization of these alcohols at C-1 and C-5, respectively, was performed with (diacetoxyiodo)benzene and iodine in order to generate the alkoxy radicals which undergo an intramolecular hydrogen abstraction reaction. The diastereoisomers (5R,7S,13S)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (37) and (5S,7S,13S)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (38) were prepared starting from tri-O-acetyl-D-glucal using a suitable methodology in which homologation and intramolecular hydrogen abstraction were again the key steps. We believe that this protocol could be easily extended to other tricyclic dispiroacetal ring systems.

  DOI：

  10.1021/jo972023a
• 作为产物：
  描述：

  4-[(2R,3R,6S)-6-(tert-Butyl-diphenyl-silanyloxymethyl)-3-methoxy-tetrahydro-pyran-2-yl]-butan-1-ol 在 碘苯二乙酸 、 碘 作用下， 以 环己烷 为溶剂， 反应 1.17h， 以22%的产率得到tert-Butyl-((2S,5R,6R)-5-methoxy-1,7-dioxa-spiro[5.5]undec-2-ylmethoxy)-diphenyl-silane
  参考文献：
  名称：

  Syntheses of Chiral Dispiroacetals from Carbohydrates

  摘要：

  The syntheses of trioxadispiroacetals from carbohydrates are described. (5R,7S,13R)-13-Methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (23) and (5S,7S,13R)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (24) were prepared starting from D-galactose. The construction of the lateral tetrahydrofuran and tetrahydropyran rings was realized by homologation at C-1 and C-6 by appropriate tethers possessing a terminal primary alcohol. The cyclization of these alcohols at C-1 and C-5, respectively, was performed with (diacetoxyiodo)benzene and iodine in order to generate the alkoxy radicals which undergo an intramolecular hydrogen abstraction reaction. The diastereoisomers (5R,7S,13S)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (37) and (5S,7S,13S)-13-methoxy-1,6,8-trioxadispiro[4.1.5.3]pentadecane (38) were prepared starting from tri-O-acetyl-D-glucal using a suitable methodology in which homologation and intramolecular hydrogen abstraction were again the key steps. We believe that this protocol could be easily extended to other tricyclic dispiroacetal ring systems.

  DOI：

  10.1021/jo972023a