(2RS,3SR,4RS)-1-O-benzyl-2,4-dimethyl-1,3-heptanediol

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2RS,3SR,4RS)-1-O-benzyl-2,4-dimethyl-1,3-heptanediol
• 英文别名: (2R,3S,4R)-2,4-dimethyl-1-phenylmethoxyheptan-3-ol
• 化学式: C₁₆H₂₆O₂
• 分子量: 250.381
• InChiKey: OKEWUOMFXABGLP-FMKPAKJESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  18
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (2RS,3SR,4RS)-1-O-benzyl-2,4-dimethyl-1,3-heptanediol 在 4-二甲氨基吡啶 、 potassium tert-butylate 、 氨 、 lithium 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.0h， 生成 (+/-)-3-epi-invictolide
  参考文献：
  名称：

  Stereoselective total synthesis of (.+-.)-invictolide. An efficient preparation of a trisubstituted .delta.-lactone from aldol precursors

  摘要：

  The stereoselective total synthesis of (+/-)-invictolide (1), a component of the queen recognition pheromone of Solenopsis invicta, is described. The TiCl4-mediated addition of silyl ketene thioacetal 8 to (+/-)-3-(benzyloxy)-2-methylpropionaldehyde afforded exclusively thioester 10, in 65% yield, which was straightforwardly converted to diol 5 (ca. 31% yield). Diol 5 was also prepared after LiAlH4 reduction of the major aldol formed in the condensation between the lithium enolate of 2,6-di-tert-butyl-4-methylphenyl propanoate and (+/-)-2-methylvaleraldehyde (ca.50% overall yield). Intramolecular alkylation (t-BuOK-THF) of 6 or 7 gave a 40:60 mixture of (+/-)-1 and its C(3) epimer. Catalytic hydrogenation of unsaturated lactone 17 afforded (+/-)-1 in 80% yield.

  DOI：

  10.1021/jo00054a014
• 作为产物：
  描述：

  S-tert-butyl (2R,3S,4S)-3-hydroxy-2,4-dimethyl-5-phenylmethoxypentanethioate 在 lithium aluminium tetrahydride 、 copper(I) bromide dimethylsulfide complex 、 乙基锂 、 三乙胺 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 为溶剂， 反应 23.0h， 生成 (2RS,3SR,4RS)-1-O-benzyl-2,4-dimethyl-1,3-heptanediol
  参考文献：
  名称：

  Stereoselective total synthesis of (.+-.)-invictolide. An efficient preparation of a trisubstituted .delta.-lactone from aldol precursors

  摘要：

  The stereoselective total synthesis of (+/-)-invictolide (1), a component of the queen recognition pheromone of Solenopsis invicta, is described. The TiCl4-mediated addition of silyl ketene thioacetal 8 to (+/-)-3-(benzyloxy)-2-methylpropionaldehyde afforded exclusively thioester 10, in 65% yield, which was straightforwardly converted to diol 5 (ca. 31% yield). Diol 5 was also prepared after LiAlH4 reduction of the major aldol formed in the condensation between the lithium enolate of 2,6-di-tert-butyl-4-methylphenyl propanoate and (+/-)-2-methylvaleraldehyde (ca.50% overall yield). Intramolecular alkylation (t-BuOK-THF) of 6 or 7 gave a 40:60 mixture of (+/-)-1 and its C(3) epimer. Catalytic hydrogenation of unsaturated lactone 17 afforded (+/-)-1 in 80% yield.

  DOI：

  10.1021/jo00054a014

文献信息

• Stereoselective total synthesis of (.+-.)-invictolide. An efficient preparation of a trisubstituted .delta.-lactone from aldol precursors
  作者：Ronaldo Aloise Pilli、Maria Marcia Murta

  DOI：10.1021/jo00054a014

  日期：1993.1

  The stereoselective total synthesis of (+/-)-invictolide (1), a component of the queen recognition pheromone of Solenopsis invicta, is described. The TiCl4-mediated addition of silyl ketene thioacetal 8 to (+/-)-3-(benzyloxy)-2-methylpropionaldehyde afforded exclusively thioester 10, in 65% yield, which was straightforwardly converted to diol 5 (ca. 31% yield). Diol 5 was also prepared after LiAlH4 reduction of the major aldol formed in the condensation between the lithium enolate of 2,6-di-tert-butyl-4-methylphenyl propanoate and (+/-)-2-methylvaleraldehyde (ca.50% overall yield). Intramolecular alkylation (t-BuOK-THF) of 6 or 7 gave a 40:60 mixture of (+/-)-1 and its C(3) epimer. Catalytic hydrogenation of unsaturated lactone 17 afforded (+/-)-1 in 80% yield.