(1R)-1-[(1R,2R)-2-(hydroxymethyl)cyclohexyl]prop-2-yn-1-ol | 159405-33-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (1R)-1-[(1R,2R)-2-(hydroxymethyl)cyclohexyl]prop-2-yn-1-ol
• CAS: 159405-33-1
• 化学式: C₁₀H₁₆O₂
• 分子量: 168.236
• InChiKey: WHSBLDQBVZUSQP-AEJSXWLSSA-N

物化性质

• 沸点：
  287.7±10.0 °C(predicted)
• 密度：
  1.062±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (1R)-1-[(1R,2R)-2-(hydroxymethyl)cyclohexyl]prop-2-yn-1-ol 在 4-二甲氨基吡啶 、 三乙胺 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 34.0h， 生成 Acetic acid (R)-1-((1R,2R)-2-trityloxymethyl-cyclohexyl)-prop-2-ynyl ester
  参考文献：
  名称：

  Total Synthesis of the Unusual Marine Alkaloid (-)-Papuamine Utilizing a Novel Imino Ene Reaction

  摘要：

  A concise enantioselective total synthesis of the recently isolated antibacterial and antifungal marine alkaloid (-)-papuamine (1) is described. The key feature of the synthesis includes the development and subsequent implementation of a novel pericyclic imino ene reaction. Starting from readily available enantiomerically pure acid ester 11, allenyl silane N-benzyl imines 24 and 27 were generated in situ from aldehydes 23a/b. These imines undergo concerted stereospecific imino ene reactions to afford silyl acetylenes 25 and 28, respectively, in high yields. The ene reactions were found to be promoted both thermally in refluxing toluene and at lower temperatures using the Lewis acid stannic chloride as a catalyst. Desilylation of compounds 25 and 28 afforded terminal alkynes 26 and 29, respectively, whose structures and stereochemistry were unambiguously established by single crystal X-ray structure analysis of the corresponding HCl salts. In a more highly convergent approach to the alkaloid 1, aldehyde allenyl silane 23a was treated with 0.5 equiv of 1,3-diaminopropane in refluxing toluene to afford homopropargylic diamine 40 as one stereoisomer via a double imino ene reaction, which effectively established the remaining four of the eight stereogenic centers of papuamine in one simple operation. To complete the route to the natural enantiomer of papuamine, a Pd(II) catalyzed macrocyclization of bis-E-vinyl stannane 42b was effected in moderate yield.

  DOI：

  10.1021/ja00149a013
• 作为产物：
  描述：

  (3aR,7aR)-hexahydroisobenzofuran-1(3H)-one 在 二异丁基氢化铝 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 生成 (1R)-1-[(1R,2R)-2-(hydroxymethyl)cyclohexyl]prop-2-yn-1-ol
  参考文献：
  名称：

  Total Synthesis of Papuamine via a Stereospecific Intramolecular Imino Ene Reaction of an Allenylsilane

  摘要：

  DOI：

  10.1021/ja00100a070