2-(1-hydroxy-2,2-dimethylpropyl)-2-cyclohexen-1-one | 189870-31-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(1-hydroxy-2,2-dimethylpropyl)-2-cyclohexen-1-one
• 英文别名: 2-(1-hydroxy-2,2-dimethylpropyl)-2-cyclohexenone；2-(1-Hydroxy-2,2-dimethylpropyl)cyclohex-2-en-1-one；2-(1-hydroxy-2,2-dimethylpropyl)cyclohex-2-en-1-one
• CAS: 189870-31-3
• 化学式: C₁₁H₁₈O₂
• 分子量: 182.263
• InChiKey: SORJZAPSWATQQR-UHFFFAOYSA-N

物化性质

• 沸点：
  303.2±21.0 °C(Predicted)
• 密度：
  1.030±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-chlorocyclohex-2-en-1-one 在 4,4'-二叔丁基苯并 、 草酸 、 silica gel 、 lithium 、 对甲苯磺酸 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 苯 为溶剂， 反应 8.17h， 生成 2-(1-hydroxy-2,2-dimethylpropyl)-2-cyclohexen-1-one
  参考文献：
  名称：

  Ketalised α- and β-lithiated α,β-unsaturated ketones: New masked acylvinyl anion equivalents

  摘要：

  The reaction of chloroketals 1, 5 and 10 with an excess of lithium powder and a catalytic amount of DTBB (4-5%) in THF at -78 or -90 degrees C leads to the corresponding functionalised organolithium compounds 2, 6 and 11, respectively, resulting from a chlorine/lithium exchange; treatment of these intermediates with different electrophiles [H2O, D2O, Me(3)SiCl, Bu(t)CHO, PhCHO, Me(2)CO, (CH2)(4)CO, (CH2)(5)CO, PhCOMe] affords, after hydrolysis with water, the corresponding products 3, 7 and 12, respectively. Careful acidic hydrolysis of these ketalised products with a 10% aqueous solution of oxalic acid leads to the expected ketones 4, 9 and 13, respectively. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0040-4020(97)00187-7

文献信息

• Rate Acceleration of the Baylis−Hillman Reaction in Polar Solvents (Water and Formamide). Dominant Role of Hydrogen Bonding, Not Hydrophobic Effects, Is Implicated
  作者：Varinder K. Aggarwal、David K. Dean、Andrea Mereu、Richard Williams

  DOI：10.1021/jo016073y

  日期：2002.1.1

  A substantial acceleration of the Baylis-Hillman reaction between cyclohexenone and benzaldehyde has been observed when the reaction is conducted in water. Several different amine catalysts were tested, and as with reactions conducted in the absence of solvent, 3-hydroxyquinuclidine was found to be the optimum catalyst in terms of rate. The reaction has been extended to other aldehyde electrophiles

  当反应在水中进行时，已观察到环己烯酮和苯甲醛之间的Baylis-Hillman反应大大加速。测试了几种不同的胺催化剂，并且与在不存在溶剂的情况下进行的反应一样，就速率而言，发现3-羟基喹核苷是最佳催化剂。该反应已经扩展到包括醛的其他醛亲电试剂。尝试将这项工作扩展至丙烯酸酯仅获得了部分成功，因为在碱催化和水促进的条件下，丙烯酸甲酯和丙烯酸乙酯迅速水解。然而，丙烯酸叔丁酯足够稳定以与相对反应性的亲电试剂偶联。有关使用极性溶剂的进一步研究表明，甲酰胺还提供了显着的加速作用，并且使用5当量的甲酰胺（最适量）比在水中进行的反应速率更快。使用甲酰胺，在Yb（OTf）（3）（5 mol％）的存在下实现了进一步的加速。新条件的范围用一系列迈克尔受体和苯甲醛以及一系列亲电试剂和丙烯酸乙酯进行了测试。讨论了速率加速的起源。
• Superior amine catalysts for the Baylis–Hillman reaction: the use of DBU and its implications†
  作者：Varinder K. Aggarwal、Andrea Mereu

  DOI：10.1039/a907754e

  日期：——

  DBU, which is normally regarded as a hindered and non-nucleophilic base, is in fact the optimum catalyst for the Baylis–Hillman reaction, providing adducts at much faster rates than using DABCO or 3HQD; the scope of the Baylis–Hillman reaction is enhanced using this catalyst and implications of this finding are discussed.

  DBU通常被认为是一种位阻大且非亲核性的碱，但实际上它是Baylis-Hillman反应的最佳催化剂，能够比使用DABCO或3HQD更快速地提供加合物；使用这种催化剂可以扩大Baylis-Hillman反应的应用范围，并且讨论了这一发现的含义。
• Ketalised α- and β-lithiated α,β-unsaturated ketones: New masked acylvinyl anion equivalents
  作者：Abderrazak Bachki、Francisco Foubelo、Miguel Yus

  DOI：10.1016/s0040-4020(97)00187-7

  日期：1997.3

  The reaction of chloroketals 1, 5 and 10 with an excess of lithium powder and a catalytic amount of DTBB (4-5%) in THF at -78 or -90 degrees C leads to the corresponding functionalised organolithium compounds 2, 6 and 11, respectively, resulting from a chlorine/lithium exchange; treatment of these intermediates with different electrophiles [H2O, D2O, Me(3)SiCl, Bu(t)CHO, PhCHO, Me(2)CO, (CH2)(4)CO, (CH2)(5)CO, PhCOMe] affords, after hydrolysis with water, the corresponding products 3, 7 and 12, respectively. Careful acidic hydrolysis of these ketalised products with a 10% aqueous solution of oxalic acid leads to the expected ketones 4, 9 and 13, respectively. (C) 1997 Elsevier Science Ltd.