3-庚炔-1,2-二醇,2-[(乙酰氧基)甲基]-,1-乙酸酯 | 138436-05-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 甘油脂
• 中文名称: 3-庚炔-1,2-二醇,2-[(乙酰氧基)甲基]-,1-乙酸酯
• 英文名称: 1-Acetoxy-2-(acetoxymethyl)hept-3-yn-2-ol
• 英文别名: [2-(Acetyloxymethyl)-2-hydroxyhept-3-ynyl] acetate
• CAS: 138436-05-2
• 化学式: C₁₂H₁₈O₅
• 分子量: 242.272
• InChiKey: DNSXTSGOHHINMU-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  17
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  72.8
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  3-庚炔-1,2-二醇,2-[(乙酰氧基)甲基]-,1-乙酸酯 在 palladium, 5% on calcium carbonate, poisoned with lead 2,6-二甲基吡啶 、 氢气 作用下， 以 乙醇 、 水 为溶剂， 反应 7.0h， 生成 (Z)-(S)-2-(Acetoxymethyl)hept-3-en-1-ol
  参考文献：
  名称：

  Chemoenzymic preparation of asymmetrized tris(hydroxymethyl)methane (THYM*) and of asymmetrized bis(hydroxymethyl)acetaldehyde (BHYMA*) as new highly versatile chiral building blocks

  摘要：

  A series of asymmetrized tris(hydroxymethyl)methanes 2 and bis(hydroxymethyl)acetaldehydes 3 have been prepared in both enantiomeric forms through a chemoenzymatic methodology. The key step is the highly enantioselective PPL-catalyzed monohydrolysis of 2(E)-alkenyl-1,3-diacetoxypropanes 25-27. A careful study on the effect of unsaturations adjacent to the prochiral center in a series of 2-substituted 1,3-diacetoxypropanes has confirmed the suggested beneficial effect of a pi-system in that position but has also unveiled an unprecedented dramatic effect of double-bond configuration on enantioselectivity. A new empirical model for the interpretation of these and other results, based both on polarity and steric arguments, is proposed. This study provides a general protocol for the efficient synthesis of asymmetrized 1,3-propanediols bearing in position 2 saturated or unsaturated carbon chains.

  DOI：

  10.1021/jo00031a039
• 作为产物：
  描述：

  1-戊炔 、 1,3-二乙酰氧基丙酮 在 正丁基锂 作用下， 生成 3-庚炔-1,2-二醇,2-[(乙酰氧基)甲基]-,1-乙酸酯
  参考文献：
  名称：

  Chemoenzymic preparation of asymmetrized tris(hydroxymethyl)methane (THYM*) and of asymmetrized bis(hydroxymethyl)acetaldehyde (BHYMA*) as new highly versatile chiral building blocks

  摘要：

  A series of asymmetrized tris(hydroxymethyl)methanes 2 and bis(hydroxymethyl)acetaldehydes 3 have been prepared in both enantiomeric forms through a chemoenzymatic methodology. The key step is the highly enantioselective PPL-catalyzed monohydrolysis of 2(E)-alkenyl-1,3-diacetoxypropanes 25-27. A careful study on the effect of unsaturations adjacent to the prochiral center in a series of 2-substituted 1,3-diacetoxypropanes has confirmed the suggested beneficial effect of a pi-system in that position but has also unveiled an unprecedented dramatic effect of double-bond configuration on enantioselectivity. A new empirical model for the interpretation of these and other results, based both on polarity and steric arguments, is proposed. This study provides a general protocol for the efficient synthesis of asymmetrized 1,3-propanediols bearing in position 2 saturated or unsaturated carbon chains.

  DOI：

  10.1021/jo00031a039

文献信息

• Chemoenzymic preparation of asymmetrized tris(hydroxymethyl)methane (THYM*) and of asymmetrized bis(hydroxymethyl)acetaldehyde (BHYMA*) as new highly versatile chiral building blocks
  作者：Giuseppe Guanti、Luca Banfi、Enrica Narisano

  DOI：10.1021/jo00031a039

  日期：1992.2

  A series of asymmetrized tris(hydroxymethyl)methanes 2 and bis(hydroxymethyl)acetaldehydes 3 have been prepared in both enantiomeric forms through a chemoenzymatic methodology. The key step is the highly enantioselective PPL-catalyzed monohydrolysis of 2(E)-alkenyl-1,3-diacetoxypropanes 25-27. A careful study on the effect of unsaturations adjacent to the prochiral center in a series of 2-substituted 1,3-diacetoxypropanes has confirmed the suggested beneficial effect of a pi-system in that position but has also unveiled an unprecedented dramatic effect of double-bond configuration on enantioselectivity. A new empirical model for the interpretation of these and other results, based both on polarity and steric arguments, is proposed. This study provides a general protocol for the efficient synthesis of asymmetrized 1,3-propanediols bearing in position 2 saturated or unsaturated carbon chains.