(1S,4R)-2,6,6-trimethyl-2-cyclohexen-1,4-diol | 169219-63-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (1S,4R)-2,6,6-trimethyl-2-cyclohexen-1,4-diol
• 英文别名: (1S,4R)-2,6,6-trimethylcyclohex-2-ene-1,4-diol
• CAS: 169219-63-0
• 化学式: C₉H₁₆O₂
• 分子量: 156.225
• InChiKey: GVYFIMKMHDHRLF-JGVFFNPUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (1S,4R)-2,6,6-trimethyl-2-cyclohexen-1,4-diol 在 palladium on activated charcoal 氢气 作用下， 以 乙醇 为溶剂， 以42%的产率得到(+/-)-cis-2,6,6-trimethylcyclohexane-1,4-diol
  参考文献：
  名称：

  Lipase-catalyzed asymmetric synthesis of (R)- and (S)-4-tert-butyldimethylsilyloxy-2,6,6-trimethyl-2-cyclohexenone and their dihydro derivatives

  摘要：

  Racemic 4-hydroxy-2,6,6-trimethyl-2-cyclohexenon trans- and cis-2,6,6-trimethyl-2-cyclohexene-1,4-diols were prepared by reduction of 4-oxoisophorone with sodium borohydride-cerium chloride. Lipase (PS-30)-catalyzed kinetic resolution of (+/-)-cis-2,6,6-trimethyl-2-cyclohexene-1,4-diol with vinyl acetate led to (1R, 4S)-4-acetoxy-2,6, 6-trimethyl-2-cyclohexen-1-ol (81 %ee);and (1S, 4K)-1-acetoxy-2,6,6-trimethyl-2-cyclohexene-4-ol (92 %ee). Hydrolysis of the former monoacetate and recrytallization of the resulting material afforded enantiomerically pure (1R, 4S)-2,6,6-trimethyl-2-cyclohexene-1,4-diol. On the other hand, recrystallization of (1S, 4R) monoacetate itself provided an optically pure sample, which was then hydrolyzed to give (1S, 417)-2,6,6-trimethylcyclohexene-1,4-diol. Transformation of both diols into (S)- and (R)-4-tert-butyldimethylsilyloxy-2,6,6-trimethyl-2-cyclohexenone was conducted in two steps including silylation and oxidation. Catalytic hydrogenation of these (S)- and(R)-silyloxy enones dyer Raney nickel afforded the corresponding dihydro derivatives.

  DOI：

  10.1016/0957-4166(95)00159-m
• 作为产物：
  描述：

  [(1S,4R)-4-hydroxy-2,6,6-trimethylcyclohex-2-en-1-yl] acetate 在 potassium carbonate 作用下， 以 甲醇 为溶剂， 反应 17.0h， 以88%的产率得到(1S,4R)-2,6,6-trimethyl-2-cyclohexen-1,4-diol
  参考文献：
  名称：

  Lipase-catalyzed asymmetric synthesis of (R)- and (S)-4-tert-butyldimethylsilyloxy-2,6,6-trimethyl-2-cyclohexenone and their dihydro derivatives

  摘要：

  Racemic 4-hydroxy-2,6,6-trimethyl-2-cyclohexenon trans- and cis-2,6,6-trimethyl-2-cyclohexene-1,4-diols were prepared by reduction of 4-oxoisophorone with sodium borohydride-cerium chloride. Lipase (PS-30)-catalyzed kinetic resolution of (+/-)-cis-2,6,6-trimethyl-2-cyclohexene-1,4-diol with vinyl acetate led to (1R, 4S)-4-acetoxy-2,6, 6-trimethyl-2-cyclohexen-1-ol (81 %ee);and (1S, 4K)-1-acetoxy-2,6,6-trimethyl-2-cyclohexene-4-ol (92 %ee). Hydrolysis of the former monoacetate and recrytallization of the resulting material afforded enantiomerically pure (1R, 4S)-2,6,6-trimethyl-2-cyclohexene-1,4-diol. On the other hand, recrystallization of (1S, 4R) monoacetate itself provided an optically pure sample, which was then hydrolyzed to give (1S, 417)-2,6,6-trimethylcyclohexene-1,4-diol. Transformation of both diols into (S)- and (R)-4-tert-butyldimethylsilyloxy-2,6,6-trimethyl-2-cyclohexenone was conducted in two steps including silylation and oxidation. Catalytic hydrogenation of these (S)- and(R)-silyloxy enones dyer Raney nickel afforded the corresponding dihydro derivatives.

  DOI：

  10.1016/0957-4166(95)00159-m