(2S,3R)-2-((E)-Styryl)-1-(toluene-4-sulfonyl)-3-trimethylsilanylethynyl-aziridine

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2S,3R)-2-((E)-Styryl)-1-(toluene-4-sulfonyl)-3-trimethylsilanylethynyl-aziridine
• 英文别名: trimethyl-[2-[(2R,3S)-1-(4-methylphenyl)sulfonyl-3-[(E)-2-phenylethenyl]aziridin-2-yl]ethynyl]silane
• 化学式: C₂₂H₂₅NO₂SSi
• 分子量: 395.598
• InChiKey: BKNOQBPFQBROLC-YPXWMVDESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.33
• 重原子数：
  27
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  45.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  苯磺酰胺,4-甲基-N-(3-苯基-2-亚丙烯基)-,(E,E)- 、 dimethyl(4-(trimethylsilyl)but-2-ynyl)sulfonium bromide 在 caesium carbonate 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 以78%的产率得到(2S,3R)-2-((E)-Styryl)-1-(toluene-4-sulfonyl)-3-trimethylsilanylethynyl-aziridine
  参考文献：
  名称：

  Highly Stereoselective Ylide Aziridination of N-Sulfonylimines with Sulfonium Propargylides:  A Simple Way To Synthesize Scalemic Acetylenylaziridines

  摘要：

  Under phase-transfer or low-temperature conditions, the ylide generated from diphenylsulfonium salt 2 readily reacts with N-sulfonylimines 1 to give acetylenylaziridines in excellent yields, but low to moderate cis/trans selectivity. When using n-BuLi as the base to generate the ylide at low termperature, product 3 with an intact silyl protecting group is obtained. t-BuOK, however, leads to desilylation product 4. With Cs2CO3 as the base, dimethylsulfonium salts 6, 21, and 22 show much better cis/trans selectivity (>98:2) than diphenylsulfonium salt 2. The asymmetric version of the above aziridination reaction using camphor-derived sulfonium salts 12-14 and 20 gives chiral aziridines with ee values up to 85%. Both (2R,3S)-(-)-3 and (2S,3R)-(+)-3 can be prepared from 12/20 or 13/14, respectively. Ylides produced from telluronium salt 7 failed to react with imine la at room temperature, but the reaction succeeded at low temperature. Arsonium ylides from 8 cannot react with N-sulfonylimines under both sets of conditions.

  DOI：

  10.1021/jo9800964

文献信息

• Highly Stereoselective Ylide Aziridination of <i>N</i>-Sulfonylimines with Sulfonium Propargylides:  A Simple Way To Synthesize Scalemic Acetylenylaziridines
  作者：An-Hu Li、Yong-Gui Zhou、Li-Xin Dai、Xue-Long Hou、Li-Jun Xia、Lin

  DOI：10.1021/jo9800964

  日期：1998.6.1

  Under phase-transfer or low-temperature conditions, the ylide generated from diphenylsulfonium salt 2 readily reacts with N-sulfonylimines 1 to give acetylenylaziridines in excellent yields, but low to moderate cis/trans selectivity. When using n-BuLi as the base to generate the ylide at low termperature, product 3 with an intact silyl protecting group is obtained. t-BuOK, however, leads to desilylation product 4. With Cs2CO3 as the base, dimethylsulfonium salts 6, 21, and 22 show much better cis/trans selectivity (>98:2) than diphenylsulfonium salt 2. The asymmetric version of the above aziridination reaction using camphor-derived sulfonium salts 12-14 and 20 gives chiral aziridines with ee values up to 85%. Both (2R,3S)-(-)-3 and (2S,3R)-(+)-3 can be prepared from 12/20 or 13/14, respectively. Ylides produced from telluronium salt 7 failed to react with imine la at room temperature, but the reaction succeeded at low temperature. Arsonium ylides from 8 cannot react with N-sulfonylimines under both sets of conditions.