2-(2-methoxypyridin-3-yl)-2-phenylethanol | 1335212-88-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(2-methoxypyridin-3-yl)-2-phenylethanol
• 英文别名: 2-(2-Methoxypyridin-3-yl)-2-phenylethanol
• CAS: 1335212-88-8
• 化学式: C₁₄H₁₅NO₂
• 分子量: 229.279
• InChiKey: NWBSJANXDLZPHB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  42.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-甲氧基吡啶 、 (R)-环氧苯乙烷 在 2,2,6,6-四甲基哌啶 、 正丁基锂 、 iron(II) bromide 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 3.0h， 生成 2-(2-methoxypyridin-3-yl)-2-phenylethanol
  参考文献：
  名称：

  Deprotonative metalation of aromatic compounds using mixed lithium–iron combinations

  摘要：

  The deprotonation of 2-methoxypyridine was attempted using putative (TMP)(3)FeLi prepared from different iron sources. Using iodine to intercept the metalated 2-methoxypyridine, the best result was obtained from FeBr2 (1 equiv) using THF at room temperature: nevertheless, in addition to the expected iodide, the corresponding 2,2'-dimer was obtained (86% total yield). The origin of the competitive formation of the 2,2'-dimer was not identified but mechanisms were suggested to explain its formation. It was observed that the nature of the electrophile employed to trap the 3-metalated 2-methoxypyridine has a strong impact on this dimer formation, the latter being favored using iodine (35% yield), but also benzophenone (28%), benzoyl chloride (22%), methyl iodide (27%), allyl bromide (15%), benzyl bromide (41%), and tetramethylthiuram disulphide (36%); for this reason, the yields of the expected derivatives were only 51, 15, 62, 0, <5, 18, and 0%, respectively. In contrast, using aldehydes readily led to the expected pyridine alcohols without dimerization (59% yield using 3,4,5-trimethoxybenzaldehyde and 66% yield using pivalaldehyde). 2,6-Dimethoxypyridine (in 68% yield), anisole (47%), 2,4-dimethoxypyrimidine (50% at C5 and 3% at C6), 2-fluoropyridine (64%), and thiophene (49%) were similarly converted into the corresponding alcohols after subsequent trapping with pivalaldehyde. Using iodine to trap the 2-metalated anisole did not lead to dimer formation, and 2-iodoanisole was isolated in 71% yield. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.02.019

文献信息

• Deprotonative Metalation of Aromatic Compounds by Using an Amino-Based Lithium Cuprate
  作者：Tan Tai Nguyen、Nada Marquise、Floris Chevallier、Florence Mongin

  DOI：10.1002/chem.201100990

  日期：2011.9.5

  employed to attempt the interception of the generated aryl cuprates, aroyl chlorides, iodomethane, and diphenyl disulfide efficiently reacted. In addition, different oxidative agents were identified to afford symmetrical biaryls. Finally, palladium‐catalyzed coupling with aryl halides was optimized and allowed the synthesis of different aryl derivatives in medium to good yields.

  以2,4-二甲氧基嘧啶和2-甲氧基吡啶为底物，以苯甲酰氯为亲电子试剂，对基于氨基的铜酸锂对芳香族化合物的去质子化进行了优化。[（tmp）2 CuLi]（+2 LiCl）（tmp = 2,2,6,6-四甲基哌啶子基）被确定为最佳试剂，其应用范围已扩展到苯甲醚，1,4-二甲氧基苯，其他取代的吡啶，呋喃，噻吩及其衍生物和N -Boc-吲哚（Boc =叔-丁氧羰基）。在试图拦截所生成的芳基铜酸酯的亲电试剂中，芳酰氯，碘甲烷和二苯基二硫化物有效地反应了。另外，鉴定出不同的氧化剂以提供对称的联芳基。最后，优化了钯催化与芳基卤化物的偶联，并以中等收率合成了不同的芳基衍生物。