(+/-)-(E)-1-hydroxy-1-(4-nitrophenyl)hex-4-en-3-one | 872427-97-9

• 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: (+/-)-(E)-1-hydroxy-1-(4-nitrophenyl)hex-4-en-3-one
• 英文别名: (E)-1-hydroxy-1-(4-nitrophenyl)hex-4-en-3-one
• CAS: 872427-97-9
• 化学式: C₁₂H₁₃NO₄
• 分子量: 235.24
• InChiKey: WBRZGWOTBZMVHY-NSCUHMNNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  83.1
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  双环[4.1.0]庚烷 、 (+/-)-(E)-1-hydroxy-1-(4-nitrophenyl)hex-4-en-3-one 在 Hoveyda-Grubbs catalyst second generation 作用下， 以 二氯甲烷 为溶剂， 以55%的产率得到(+/-)-1-cyclohexyliden-4-hydroxy-4-(4-nitrophenyl)-butan-2-one
  参考文献：
  名称：

  Elongation of β-hydroxyenones by cross-metathesis

  摘要：

  Enantioenriched aldol products derived from enones are notoriously difficult to prepare due to their sensitivity to retroaldolisation, elimination and the requirement of a large excess of the enone donor for their preparation. However, some success has been obtained for the preparation of aldol products derived from methylvinylketone and penterione using zinc-dinuclear catalysts or catalytic antibodies. Herein, we describe how simple first-generation hydroxyenones can be easily elongated by alkene exchange with structurally diverse olefinic partners in the presence of Ru-based metathesis catalysts allowing for the preparation of aldol products difficult to access by direct aldolisation. The data suggest that even though unprotected aldols are suitable for these cross-metatbesis reactions, silyl-protected beta-hydroxyenones generally afforded the desired elongated products in much higher chemical yields. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2005.10.037
• 作为产物：
  描述：

  对硝基苯甲醛 、 戊-3-烯-2-酮 在 lithium diisopropyl amide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 0.58h， 生成 (+/-)-(E)-1-hydroxy-1-(4-nitrophenyl)hex-4-en-3-one
  参考文献：
  名称：

  Elongation of β-hydroxyenones by cross-metathesis

  摘要：

  Enantioenriched aldol products derived from enones are notoriously difficult to prepare due to their sensitivity to retroaldolisation, elimination and the requirement of a large excess of the enone donor for their preparation. However, some success has been obtained for the preparation of aldol products derived from methylvinylketone and penterione using zinc-dinuclear catalysts or catalytic antibodies. Herein, we describe how simple first-generation hydroxyenones can be easily elongated by alkene exchange with structurally diverse olefinic partners in the presence of Ru-based metathesis catalysts allowing for the preparation of aldol products difficult to access by direct aldolisation. The data suggest that even though unprotected aldols are suitable for these cross-metatbesis reactions, silyl-protected beta-hydroxyenones generally afforded the desired elongated products in much higher chemical yields. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2005.10.037

文献信息

• The chalcogeno-Baylis-Hillman reaction: a new preparation of allylic alcohols from aldehydes and electron-deficient alkenes
  作者：Tadashi Kataoka、Tetsuo Iwama、Shin-ichiro Tsujiyama、Tatsunori Iwamura、Shin-ichi Watanabe

  DOI：10.1016/s0040-4020(98)83041-x

  日期：1998.9

  The chalcogeno-Baylis-Hillman reaction catalyzed by sulfides and selenides, the group 16 element compounds, in the presence of Lewis acids was developed. The reactions proceeded smoothly by the use of 1 equiv of TiCl4 to give the coupling products in moderate to good yields. Bis-chalcogenides and related compounds were investigated as a catalyst, and 1,5-diselenocyclooctane gave the best result owing

  在路易斯酸的存在下，开发了由硫化物和硒化物（第16组元素化合物）催化的硫属元素-Baylis-Hillman反应。通过使用1当量的TiCl 4使反应顺利进行，以中等至良好的产率得到偶联产物。研究了双硫族化物和相关化合物作为催化剂，由于阳离子中间体通过跨环相互作用而稳定，因此1,5-二硒代环辛烷的效果最佳。