3-(4-methoxyphenyl)-4-methylquinoline

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 喹啉及其衍生物
• 英文名称: 3-(4-methoxyphenyl)-4-methylquinoline
• 英文别名: 3-(4-Methoxyphenyl)-4-methylquinoline
• 化学式: C₁₇H₁₅NO
• 分子量: 249.312
• InChiKey: BDJKMJFNEUMEPT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  19
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  22.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  在 bis-triphenylphosphine-palladium(II) chloride 、 亚磷酸二乙酯 、 对苯醌 、 lithium tert-butoxide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以56%的产率得到3-(4-methoxyphenyl)-4-methylquinoline
  参考文献：
  名称：

  Pd-Catalyzed Cross-Coupling Reactions of Hydrazones: Regioselective Synthesis of Highly Branched Dienes

  摘要：

  The regioselective formation of highly branched dienes is a challenging task. Design and exploration of alternative working models to achieve such a regioselectivity to accomplish highly branched dienes is considered to be a historical advancement of Heck reaction to construct branched dienes. On the basis of the utility of carbene transfer reactions, in the reaction of hydrazones with Pd(II) under oxidative conditions, we envisioned obtaining a Pd-bis-carbene complex with α-hydrogens, which can lead to branched dienes. Herein, we report a novel Pd-catalyzed selective coupling reaction of hydrazones in the presence of t-BuOLi and benzoquinone to form the corresponding branched dienes. The utility of the Pd catalyst for the cross-coupling reactions for synthesizing branched conjugated dienes is rare. The reaction is very versatile and compatible with a variety of functional groups and is useful in synthesizing heterocyclic molecules. We anticipate that this Pd-catalyzed cross-coupling reaction will open new avenues for synthesizing useful compounds.

  DOI：

  10.1021/jo402153t

文献信息

• Unexpected Annulation between 2-Aminobenzyl Alcohols and Benzaldehydes in the Presence of DMSO: Regioselective Synthesis of Substituted Quinolines
  作者：Tonglin Yang、Zhi-wen Nie、Miao-dong Su、Hui Li、Wei-ping Luo、Qiang Liu、Can-Cheng Guo

  DOI：10.1021/acs.joc.1c01850

  日期：2021.11.5

  alcohols, benzaldehydes, and DMSO to quinolines has been disclosed. For the reported annulation between 2-aminobenzyl alcohols and benzaldehydes, the change of the solvent from toluene to DMSO led to the change of the product from the diheteroatomic cyclic benzoxazines to monoheteroatomic cyclic quinolines. This annulation can be used to synthesize regioselectively different substituted quinolines

  2-氨基苯甲醇、苯甲醛和 DMSO 与喹啉发生了意想不到的环化反应。对于已报道的 2-氨基苯甲醇和苯甲醛之间的环化反应，溶剂从甲苯变为 DMSO 导致产物从二杂原子环状苯并恶嗪变为单杂原子环状喹啉。通过选择不同的 2-氨基醇、醛和亚砜作为底物，这种环化可用于合成区域选择性不同的取代喹啉。有趣的是，将取代基引入亚砜的 α 位会导致产物喹啉中苯甲醛和亚砜之间的位置互换。在对照实验和文献的基础上，提出了一种合理的环化机制。
• Pd-Catalyzed Cross-Coupling Reactions of Hydrazones: Regioselective Synthesis of Highly Branched Dienes
  作者：Devi Prasan Ojha、Kandikere Ramaiah Prabhu

  DOI：10.1021/jo402153t

  日期：2013.12.6

  The regioselective formation of highly branched dienes is a challenging task. Design and exploration of alternative working models to achieve such a regioselectivity to accomplish highly branched dienes is considered to be a historical advancement of Heck reaction to construct branched dienes. On the basis of the utility of carbene transfer reactions, in the reaction of hydrazones with Pd(II) under oxidative conditions, we envisioned obtaining a Pd-bis-carbene complex with α-hydrogens, which can lead to branched dienes. Herein, we report a novel Pd-catalyzed selective coupling reaction of hydrazones in the presence of t-BuOLi and benzoquinone to form the corresponding branched dienes. The utility of the Pd catalyst for the cross-coupling reactions for synthesizing branched conjugated dienes is rare. The reaction is very versatile and compatible with a variety of functional groups and is useful in synthesizing heterocyclic molecules. We anticipate that this Pd-catalyzed cross-coupling reaction will open new avenues for synthesizing useful compounds.