6-Methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-1-ol | 140605-73-8

• 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: 6-Methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-1-ol
• CAS: 140605-73-8
• 化学式: C₁₃H₂₂O₃
• 分子量: 226.316
• InChiKey: LBHRIISFOJTWMA-UHFFFAOYSA-N

物化性质

• 沸点：
  359.2±42.0 °C(Predicted)
• 密度：
  1.03±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.08
• 重原子数：
  16.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.85
• 拓扑面积：
  38.69
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  6-Methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-1-ol 在 对甲苯磺酸 作用下， 以 甲醇 为溶剂， 生成 2-methyloct-7-en-3-yn-2-ol
  参考文献：
  名称：

  Radical cyclization of (bromomethyl)dimethylsilyl propargyl ethers. Regio-, chemo- and stereoselectivity.

  摘要：

  Radical cyclization of (bromomethyl)dimethylsilyl propargyl ether derivatives 1 is a powerful reaction with a high degree of regio-, chemo-, and stereoselectivity. Trisubstituted olefins 3, cyclopentene derivatives 5, and diquinane system 7j are obtained in good yields by a judicious choice of unsaturated substituents. Triquinane frameworks could be obtained stereoselectively from a suitable acyclic substrate of type 1 in a one-pot reaction. First attempts have not yet allowed us to aim at this goal due to interesting (1,5) hydrogen transfers. Moreover, we have intercepted, for the first time, the alpha-cyclopropyl radical which is involved in the Stork-Beckwith mechanism of the 5-versus 6-membered ring formation in the vinyl radical cyclization.

  DOI：

  10.1021/jo00037a026
• 作为产物：
  描述：

  2-甲基-3-丁炔-2-醇 在 正丁基锂 、 四丁基氟化铵 、 对甲苯磺酸 作用下， 生成 6-Methyl-6-(tetrahydro-pyran-2-yloxy)-hept-4-yn-1-ol
  参考文献：
  名称：

  Radical cyclization of (bromomethyl)dimethylsilyl propargyl ethers. Regio-, chemo- and stereoselectivity.

  摘要：

  Radical cyclization of (bromomethyl)dimethylsilyl propargyl ether derivatives 1 is a powerful reaction with a high degree of regio-, chemo-, and stereoselectivity. Trisubstituted olefins 3, cyclopentene derivatives 5, and diquinane system 7j are obtained in good yields by a judicious choice of unsaturated substituents. Triquinane frameworks could be obtained stereoselectively from a suitable acyclic substrate of type 1 in a one-pot reaction. First attempts have not yet allowed us to aim at this goal due to interesting (1,5) hydrogen transfers. Moreover, we have intercepted, for the first time, the alpha-cyclopropyl radical which is involved in the Stork-Beckwith mechanism of the 5-versus 6-membered ring formation in the vinyl radical cyclization.

  DOI：

  10.1021/jo00037a026

文献信息

• Synthesis of variously substituted allenediynes and their cobalt (I)-mediated [2+2+2] cycloaddition reactions
  作者：Dominique Llerena、Olivier Buisine、Corinne Aubert、Max Malacria

  DOI：10.1016/s0040-4020(98)00567-5

  日期：1998.8

  Syntheses of variously substituted allenediynes where the allene moiety is at the terminal or internal position are described. Their cobalt(I)-mediated [2+2+2] cycloaddition reactions led to the corresponding eta(4)-complexed tricyclic compounds; the regioselectivity of these cyclizations depending on the substitution and the position of the allene is discussed. (C) 1998 Elsevier Science Ltd. Ali rights reserved.