exo,anti-2-(hydroxy(4-nitrophenyl)methyl)-9-methyl-9-azabicyclo[3.3.1]nonan-3-one

• 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: exo,anti-2-(hydroxy(4-nitrophenyl)methyl)-9-methyl-9-azabicyclo[3.3.1]nonan-3-one
• 英文别名: rac-(1R,2S,5S)-2-((R)-hydroxy(4-nitrophenyl)methyl)-9-methyl-9-azabicyclo[3.3.1]nonan-3-one；(1R,2S,5S)-2-[(R)-hydroxy-(4-nitrophenyl)methyl]-9-methyl-9-azabicyclo[3.3.1]nonan-3-one
• 化学式: C₁₆H₂₀N₂O₄
• 分子量: 304.346
• InChiKey: JVKXRDHNBTVTMF-XNISGKROSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  22
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  86.4
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  9-甲基-9-氮杂双环[3.3.1]壬-3-酮 、 对硝基苯甲醛 在 正丁基锂 、 二异丙胺 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 1.25h， 生成 rac-(1R,2S,5S)-2-((S)-hydroxy(4-nitrophenyl)methyl)-9-methyl-9-azabicyclo[3.3.1]nonan-3-one 、 exo,anti-2-(hydroxy(4-nitrophenyl)methyl)-9-methyl-9-azabicyclo[3.3.1]nonan-3-one
  参考文献：
  名称：

  Granatanone（pseudopelletierine）的非对映和对映选择性羟醛反应

  摘要：

  Granatanone（granatan-3-one，9-methyl-9-azabicyclo [3.3.1] nonan-3-one，pseudopelletierine或pseudopelletrierin）与酰胺化锂进行质子化反应，得到烯醇锂，后者与醛非对映地选择性地反应生成异硫异构体和反/顺选择性高达98：2。可以通过手性锂酰胺将对萘烷酮进行对映选择性地锂化，并且可以使所得的非外消旋烯醇化物与醛反应，得到对映体过量高达93％的醛醇（重结晶后，ee为99％）。醛醇产物的绝对和相对构型通过NMR光谱和X射线分析确定。 格拉那坦酮; 羟醛反应; 不对称合成 对映选择性去质子; 手性锂酰胺。

  DOI：

  10.1016/j.tet.2011.09.096

文献信息

• Environmentally benign diastereoselective synthesis of granatane and tropane aldol derivatives
  作者：Aneta Nodzewska、Agnieszka Bokina、Katarzyna Romanowska、Ryszard Lazny

  DOI：10.1039/c4ra02834a

  日期：——

  Direct aldol reactions of tropinone and granatanone (pseudopelletierine) with aromatic aldehydes were promoted by the presence of water. The anti–syn-diastereoselectivity depended on the amount of water used or on the possibility of product precipitation from the reaction mixture. Some of the reactions showed excellent atom economy, a low E factor, and high diastereoselectivity (up to 98%). In several cases ‘seeding’ with the anti isomer, used to induce the deposition of solid products, improved the conversion (up to 1.8 times) and the anti–syn ratio (up to 98 : 2). The applicability of spontaneous direct aldol reactions in the presence of water was also extended to N-alkyl nortropanones or norgranatanones using an aqueous–organic medium. However, under these conditions only the exo,syn isomers of the N-substituted aldols were obtained. The syn-selectivity for the tropane- and granatane-related aldols is specific for water-promoted reactions and results from thermodynamic control.

  水的存在促进了托品酮和石榴酮（伪派尔特利林）与芳香醛的直接 aldol 反应。反应的反对–顺代谢选择性取决于使用的水的量或反应混合物中产物沉淀的可能性。一些反应表现出优异的原子经济性、较低的 E 因素和高达 98% 的立体选择性。在几个案例中，使用反对异构体进行“引种”，以诱导固体产物的沉淀，提高了转化率（高达 1.8 倍）和反对–顺比（高达 98:2）。在水的存在下，自发直接 aldol 反应的适用性也扩展到了 N-烷基北托品酮或北石榴酮，采用水-有机介质。然而，在这些条件下，只获得了 N-取代的 aldol 的外，顺异构体。对于与托品和石榴相关的 aldol，顺选择性是水促进反应所特有的，源于热力学控制。
• Spontaneous and diastereoselective aldol reactions of cyclic β-amino ketones in the presence of water
  作者：Ryszard Lazny、Aneta Nodzewska、Iwona Tomczuk

  DOI：10.1016/j.tetlet.2011.08.107

  日期：2011.10

  Direct aldol reactions of 4-methyl-1-piperidone, tropinone and granatanone (pseudopelletierine) take place spontaneously in the presence of water without any catalyst or additional reagents. The anti/syn-diastereoselectivity of the aqueous aldol reaction depends on the amount of water used. The syn-selectivity of the reaction is probably due to the thermodynamic control. Excellent atom economy and low E factors together with anti-selectivity as high as 98:2 for the tropinone aldol were obtained. (C) 2011 Elsevier Ltd. All rights reserved.