pyridin-2-yl(2,4,6-trimethoxyphenyl)methanol | 1375005-41-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: pyridin-2-yl(2,4,6-trimethoxyphenyl)methanol
• 英文别名: Pyridin-2-yl-(2,4,6-trimethoxyphenyl)methanol；pyridin-2-yl-(2,4,6-trimethoxyphenyl)methanol
• CAS: 1375005-41-6
• 化学式: C₁₅H₁₇NO₄
• 分子量: 275.304
• InChiKey: KOGKYZHNUOIEMN-UHFFFAOYSA-N

物化性质

• 沸点：
  472.5±45.0 °C(Predicted)
• 密度：
  1.185±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  60.8
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  2-溴吡啶 、 2,4,6-三甲氧基苯甲醛 在 正丁基锂 、 正丁基氯化镁 、 S-1,1'-联-2-萘酚 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 以66%的产率得到pyridin-2-yl(2,4,6-trimethoxyphenyl)methanol
  参考文献：
  名称：

  Pyridylmagnesiates: generation by bromine–metal exchange and enantioselective addition to aldehydes

  摘要：

  Butyl and dibutylmagnesiates incorporating chiral ligands have been prepared and their reactivity studied. The reagents were efficient to promote the clean bromine-magnesium exchange of azinyl bromides at room temperature and subsequent reaction with aldehydes affording pyridylcarbinols. (R,R)-TADDOL-based dibutylmagnesiate was the best reagent leading to acceptable to good enantioselectivities, depending on the substrate and on the aldehyde substitution. This is the first example of enantioselective addition of in situ generated pyridylmagnesiate to carbonyl electrophiles. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.03.058

文献信息

• The cooperative effect of Lewis pairs in the Friedel–Crafts hydroxyalkylation reaction: a simple and effective route for the synthesis of (±)-carbinoxamine
  作者：Adhikesavan Harikrishnan、Jayakumar Sanjeevi、Chinnasamy Ramaraj Ramanathan

  DOI：10.1039/c4ob02597k

  日期：——

  An efficient C–C bond formation strategy between aromatic/heteroaromatic π-nucleophiles and Lewis acid activated aldehydes is described. This aromatic electrophilic substitution reaction of arenes or heteroarenes is facilitated by Lewis acid AlBr3. Aromatic rings with electron donating substituents are excellent nucleophilic counterparts in this reaction, generating carbinols in excellent yields (61–94%)

  描述了芳族/杂芳族π-亲核试剂与路易斯酸活化醛之间有效的CC键形成策略。路易斯酸AlBr 3促进了芳烃或杂芳烃的芳族亲电取代反应。具有给电子取代基的芳香环在该反应中是极好的亲核对应物，可产生高收率的甲醇（61-94％）。在某些反应性醛和芳香族π-亲核试剂通过反应性碳正离子形成的情况下，也见证了三芳基甲烷的形成。三芳基甲烷的生成可通过以下方式更大程度地减少通过路易斯碱（例如吡啶）与烷氧基铝中间体配位的第二个π-亲核试剂加成的阻滞作用。在存在AlBr 3的情况下，各种脂肪醛也经历了Friedel-Crafts型羟烷基化反应，并以中等收率（41-53％）生成了预期的甲醇。该方案已成功地以单锅法成功用于治疗上重要的组胺H 1拮抗剂（±）-carbinoxamine的合成。
• Pyridylmagnesiates: generation by bromine–metal exchange and enantioselective addition to aldehydes
  作者：Delphine Catel、Olivier Payen、Floris Chevallier、Florence Mongin、Philippe C. Gros

  DOI：10.1016/j.tet.2012.03.058

  日期：2012.5

  Butyl and dibutylmagnesiates incorporating chiral ligands have been prepared and their reactivity studied. The reagents were efficient to promote the clean bromine-magnesium exchange of azinyl bromides at room temperature and subsequent reaction with aldehydes affording pyridylcarbinols. (R,R)-TADDOL-based dibutylmagnesiate was the best reagent leading to acceptable to good enantioselectivities, depending on the substrate and on the aldehyde substitution. This is the first example of enantioselective addition of in situ generated pyridylmagnesiate to carbonyl electrophiles. (C) 2012 Elsevier Ltd. All rights reserved.