1-Acetoxy-2-(acetoxymethyl)-3-nonyne | 133490-84-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 1-Acetoxy-2-(acetoxymethyl)-3-nonyne
• 英文别名: 2-(acetyloxymethyl)non-3-ynyl acetate
• CAS: 133490-84-3
• 化学式: C₁₄H₂₂O₄
• 分子量: 254.326
• InChiKey: KVDNJDFFUHPHLC-UHFFFAOYSA-N

物化性质

• 沸点：
  340.9±32.0 °C(Predicted)
• 密度：
  1.016±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.31
• 重原子数：
  18.0
• 可旋转键数：
  7.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  52.6
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  1-Acetoxy-2-(acetoxymethyl)-3-nonyne 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 、 叔丁醇 为溶剂， 反应 7.0h， 生成 2-[(Z)-hept-1-enyl]propane-1,3-diol
  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-庚炔 在 正丁基锂 作用下， 反应 0.5h， 生成 1-Acetoxy-2-(acetoxymethyl)-3-nonyne
  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

• Enzymes in organic synthesis: remarkable influence of a π system on the enantioselectivity in PPL catalysed monohydrolysis of 2-substituted 1,3-diacetoxypropanes.
  作者：Giuseppe Guanti、Luca Banfi、Enrica Narisano

  DOI：10.1016/s0957-4166(00)82383-6

  日期：1990.1