3-butyl-5,5-dimethyl-2-cyclohexen-1-ol

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 3-butyl-5,5-dimethyl-2-cyclohexen-1-ol
• 英文别名: 3-Tert-butyl-5,5-dimethylcyclohex-2-en-1-ol
• 化学式: C₁₂H₂₂O
• 分子量: 182.306
• InChiKey: YWXWETBLFHORSY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  氯仿 、 3-butyl-5,5-dimethyl-2-cyclohexen-1-ol 在 苄基三乙基氯化铵 sodium hydroxide 作用下， 以 水 为溶剂， 反应 0.67h， 以73%的产率得到(1α,2β,6α)-6-butyl-7,7-dichloro-4,4-dimethylbicyclo<4.1.0>heptan-2-ol
  参考文献：
  名称：

  Use of radical ring opening for introduction of alkyl and substituted alkyl groups with stereochemical control: a synthetic application of cyclopropylcarbinyl radicals

  摘要：

  Cyclopropylcarbinols 2a and 2b (see Scheme I), which are accessible by a number of routes, can be converted into the corresponding radicals 3a and 3b, respectively. These radicals undergo peripheral ring-opening of the cyclopropyl substructure to afford substituted cycloalkenes 4a and 4b. The whole sequence represents a general method for attaching alkyl, and substituted alkyl, groups to an existing cyclic structure, and it can often be carried out with predictable stereo- and regiochemical control. Reaction conditions for the ring-opening depend on the substitution pattern of the cyclopropane: where the non-bridgehead carbon of the cyclopropane carries a strongly electron-withdrawing group, the ring-opening can be done at the reflux temperature of benzene. However, in the absence of such electron-withdrawing groups, a low temperature is best used in order to suppress ring expansion. Various methods that accommodate these requirements are available for generating the radicals.

  DOI：

  10.1021/jo00012a009

文献信息

• CLIVE, DERRICK L. J.;DAIGNEAULT, SYLVAIN, J. ORG. CHEM., 56,(1991) N2, C. 3801-3814
  作者：CLIVE, DERRICK L. J.、DAIGNEAULT, SYLVAIN

  DOI：——

  日期：——
• Use of radical ring opening for introduction of alkyl and substituted alkyl groups with stereochemical control: a synthetic application of cyclopropylcarbinyl radicals
  作者：Derrick L. J. Clive、Sylvain Daigneault

  DOI：10.1021/jo00012a009

  日期：1991.6

  Cyclopropylcarbinols 2a and 2b (see Scheme I), which are accessible by a number of routes, can be converted into the corresponding radicals 3a and 3b, respectively. These radicals undergo peripheral ring-opening of the cyclopropyl substructure to afford substituted cycloalkenes 4a and 4b. The whole sequence represents a general method for attaching alkyl, and substituted alkyl, groups to an existing cyclic structure, and it can often be carried out with predictable stereo- and regiochemical control. Reaction conditions for the ring-opening depend on the substitution pattern of the cyclopropane: where the non-bridgehead carbon of the cyclopropane carries a strongly electron-withdrawing group, the ring-opening can be done at the reflux temperature of benzene. However, in the absence of such electron-withdrawing groups, a low temperature is best used in order to suppress ring expansion. Various methods that accommodate these requirements are available for generating the radicals.