2(S)-methyl-3(S)-(1'(R)-(benzyloxy)ethyl)-4-pentynoic acid amide | 145263-72-5

• 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: 2(S)-methyl-3(S)-(1'(R)-(benzyloxy)ethyl)-4-pentynoic acid amide
• 英文别名: (2S,3S)-2-methyl-3-[(1R)-1-phenylmethoxyethyl]pent-4-ynamide
• CAS: 145263-72-5
• 化学式: C₁₅H₁₉NO₂
• 分子量: 245.321
• InChiKey: NSGKCLJUJHNMTL-OUCADQQQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  18
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  52.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2(S)-methyl-3(S)-(1'(R)-(benzyloxy)ethyl)-4-pentynoic acid amide 在 copper(l) iodide 、 四(三苯基膦)钯 、 四丁基氟化铵 、 三乙胺 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 69.0h， 生成 5-[(3S,4S)-3-((R)-1-Benzyloxy-ethyl)-4-methyl-5-oxo-pyrrolidin-(2Z)-ylidenemethyl]-3-(2-methoxycarbonyl-ethyl)-4-methyl-1H-pyrrole-2-carboxylic acid tert-butyl ester
  参考文献：
  名称：

  Dihydropyrromethenones by Pd(0)-Mediated Coupling of Iodopyrroles and Acetylenic Amides. Synthesis of the A,B-Ring Segment of Phytochrome

  摘要：

  Dihydropyrromethenone derivative 32b, which constitutes the A,B-ring segment of phytochrome (6), has been prepared in enantiomerically pure form beginning with acetylenic amide 47b and iodopyrrole 27. The key steps involved the TBAF-catalyzed 5-exo-dig cyclization of the acetylenic pyrrole 48b, followed by thia-Mitsunobu inversion of the resulting alcohol derivative 31b.

  DOI：

  10.1021/jo970289b
• 作为产物：
  描述：

  (2S,3S)-3-((R)-1-Benzyloxy-ethyl)-2-methyl-pent-4-ynoic acid 在 氨 、 三乙胺 作用下， 以 四氢呋喃 为溶剂， 反应 11.5h， 生成 2(S)-methyl-3(S)-(1'(R)-(benzyloxy)ethyl)-4-pentynoic acid amide
  参考文献：
  名称：

  Dihydropyrromethenones by Pd(0)-Mediated Coupling of Iodopyrroles and Acetylenic Amides. Synthesis of the A,B-Ring Segment of Phytochrome

  摘要：

  Dihydropyrromethenone derivative 32b, which constitutes the A,B-ring segment of phytochrome (6), has been prepared in enantiomerically pure form beginning with acetylenic amide 47b and iodopyrrole 27. The key steps involved the TBAF-catalyzed 5-exo-dig cyclization of the acetylenic pyrrole 48b, followed by thia-Mitsunobu inversion of the resulting alcohol derivative 31b.

  DOI：

  10.1021/jo970289b

文献信息

• Tetrapyrroles. IV. A highly efficient synthesis of homochiral dihydropyrromethenones via Pdo mediated coupling of iodopyrroles and acetylenic amides
  作者：Peter A. Jacobi、S. Rajeswari

  DOI：10.1016/s0040-4039(00)60941-3

  日期：1992.10

  Homochiral dihydropyrromethenones of type 20 have been synthesized in a highly efficient manner by Pd(o) mediated coupling of iodopyrrole 14 with acetylenic amides 18, followed by F- catalyzed 5-exo-dig cyclization. In analogous fashion, phytochrome (8) precursor 25a has been prepared in 85% overall yield from iodopyrrole 22.