(1S,2R,4S)-2-(tert-butyldiphenylsilyloxymethyl)-(E/Z)-5-ethylidene-1-azabicyclo[2.2.2]octane | 288102-59-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 奎宁环
• 英文名称: (1S,2R,4S)-2-(tert-butyldiphenylsilyloxymethyl)-(E/Z)-5-ethylidene-1-azabicyclo[2.2.2]octane
• CAS: 288102-59-0
• 化学式: C₂₆H₃₅NOSi
• 分子量: 405.656
• InChiKey: SYCINSXOJQABRK-XZOQPEGZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  29.0
• 可旋转键数：
  5.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  12.47
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  (1S,2R,4S)-2-(tert-butyldiphenylsilyloxymethyl)-(E/Z)-5-ethylidene-1-azabicyclo[2.2.2]octane 在 sodium periodate 、 四氧化锇 、 potassium carbonate 、 potassium hexacyanoferrate(III) 作用下， 以 四氢呋喃 、 水 、 叔丁醇 为溶剂， 反应 7.0h， 生成 (1S,2R,4S)-2-(hydroxymethyl)-5-(10-phenylethynyl)-1-azabicyclo[2.2.2]octan-5-ol
  参考文献：
  名称：

  Synthesis of Enantiopure 3-Quinuclidinone Analogues with Three Stereogenic Centers:  (1S,2R,4S)- and (1S,2S,4S)-2-(Hydroxymethyl)-1-azabicyclo[2.2.2]octan-5-one and Stereocontrol of Nucleophilic Addition to the Carbonyl Group

  摘要：

  The pseudoenantiomeric title compounds have been prepared from quincorine (QCI) and quincoridine (QCD), respectively, in enantiopure form following an efficient six-step pathway. Nucleophilic attack at the carbonyl group proceeds preferentially from the supposedly more hindered endo pi-face, giving quinuclidinols with natural configuration at C5 (up to 97%). pi-Face selectivity is highest in the QCD series with bulky O-protecting groups, involving an unprecedented 1,7-stereoinduction.

  DOI：

  10.1021/jo9919815
• 作为产物：
  描述：

  quincoridine 在 4-二甲氨基吡啶 、 氢溴酸 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 三乙胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 129.33h， 生成 (1S,2R,4S)-2-(tert-butyldiphenylsilyloxymethyl)-(E/Z)-5-ethylidene-1-azabicyclo[2.2.2]octane
  参考文献：
  名称：

  Synthesis of Enantiopure 3-Quinuclidinone Analogues with Three Stereogenic Centers:  (1S,2R,4S)- and (1S,2S,4S)-2-(Hydroxymethyl)-1-azabicyclo[2.2.2]octan-5-one and Stereocontrol of Nucleophilic Addition to the Carbonyl Group

  摘要：

  The pseudoenantiomeric title compounds have been prepared from quincorine (QCI) and quincoridine (QCD), respectively, in enantiopure form following an efficient six-step pathway. Nucleophilic attack at the carbonyl group proceeds preferentially from the supposedly more hindered endo pi-face, giving quinuclidinols with natural configuration at C5 (up to 97%). pi-Face selectivity is highest in the QCD series with bulky O-protecting groups, involving an unprecedented 1,7-stereoinduction.

  DOI：

  10.1021/jo9919815