5,5-dimethyl-1,3-bis(trimethylsiloxy)hexane | 135067-17-3

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 5,5-dimethyl-1,3-bis(trimethylsiloxy)hexane
• 英文别名: (5,5-dimethyl-1-trimethylsilyloxyhexan-3-yl)oxy-trimethylsilane
• CAS: 135067-17-3
• 化学式: C₁₄H₃₄O₂Si₂
• 分子量: 290.594
• InChiKey: JITWTXMNHABLJV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.88
• 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：
  1.0
• 拓扑面积：
  18.46
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  5,5-dimethyl-1,3-bis(trimethylsiloxy)hexane 在 盐酸 、 三氟甲磺酸三甲基硅酯 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 18.0h， 生成 (3S)-5,5-dimethylhexane-1,3-diol
  参考文献：
  名称：

  Stereoselective acetalization of 1,3-alkanediols by l-menthone: application to the resolution of racemic 1,3-alkanediols and to the determination of the absolute configuration of enantiomeric 1,3-alkanediols

  摘要：

  A general and reliable method for the resolution of racemic 1,3-alkanediols, which involves their conversion into diastereomeric spiroacetals derived from l-menthone, is described. Thus, the reaction of the bis-O-trimethylsilyl derivatives of racemic 1,3-alkanediols with l-menthone in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate affords the diastereomeric spiroacetals 3 and 4. The two can be readily separated by silica gel column chromatography. Hydrolysis of each diastereomer under acidic conditions liberates the corresponding enantiomerically pure diol. An empirically derived correlation of configuration and H-1 NMR chemical shifts for spiroacetals 3 and 4 has been developed which is rationalized based on long-range effects due to the magnetic anisotropy inherent to the menthane ring in a rigid spiroacetal conformation. The method described here should be widely applicable to the determination of the absolute configuration of various 1,3-alkanediols.

  DOI：

  10.1021/jo00031a019
• 作为产物：
  描述：

  3,3-二甲基丁醛 在 lithium aluminium tetrahydride 、 正丁基锂 、 三氟甲磺酸三甲基硅酯 、 二异丙胺 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 3.5h， 生成 5,5-dimethyl-1,3-bis(trimethylsiloxy)hexane
  参考文献：
  名称：

  Stereoselective acetalization of 1,3-alkanediols by l-menthone: application to the resolution of racemic 1,3-alkanediols and to the determination of the absolute configuration of enantiomeric 1,3-alkanediols

  摘要：

  A general and reliable method for the resolution of racemic 1,3-alkanediols, which involves their conversion into diastereomeric spiroacetals derived from l-menthone, is described. Thus, the reaction of the bis-O-trimethylsilyl derivatives of racemic 1,3-alkanediols with l-menthone in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate affords the diastereomeric spiroacetals 3 and 4. The two can be readily separated by silica gel column chromatography. Hydrolysis of each diastereomer under acidic conditions liberates the corresponding enantiomerically pure diol. An empirically derived correlation of configuration and H-1 NMR chemical shifts for spiroacetals 3 and 4 has been developed which is rationalized based on long-range effects due to the magnetic anisotropy inherent to the menthane ring in a rigid spiroacetal conformation. The method described here should be widely applicable to the determination of the absolute configuration of various 1,3-alkanediols.

  DOI：

  10.1021/jo00031a019

文献信息

• Enantiodifferentiating transformation of prochiral 1,3,5-pentanetriols controlled by intramolecular van der Waals attractions
  作者：Toshiro Harada、Isao Wada、Jun-ji Uchimura、Atsushi Inoue、Sachi Tanaka、Akira Oku

  DOI：10.1016/s0040-4039(00)92049-5

  日期：1991.2

  Acetalization of prochiral 1,3,5-pentanetriol derivatives (5) with l-menthone proceeded enantioselectively (3.0-4.6:1) to give chiral spiroacetals (6) which can be utilized as versatile chiral building blocks.
• Harada, Toshiro; Inoue, Atsushi; Wada, Isao, Journal of the American Chemical Society, 1993, vol. 115, # 17, p. 7665 - 7674
  作者：Harada, Toshiro、Inoue, Atsushi、Wada, Isao、Uchimura, Jun-Ji、Tanaka, Sachi、Oku, Akira

  DOI：——

  日期：——