(R)-2-(naphthalen-2-yl)-1,2,3,4-tetrahydroquinoxaline | 1221687-24-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: (R)-2-(naphthalen-2-yl)-1,2,3,4-tetrahydroquinoxaline
• 英文别名: (2R)-2-naphthalen-2-yl-1,2,3,4-tetrahydroquinoxaline
• CAS: 1221687-24-6
• 化学式: C₁₈H₁₆N₂
• 分子量: 260.338
• InChiKey: IFZPIKRMHAKERF-SFHVURJKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  20
• 可旋转键数：
  1
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  24.1
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2-(naphthalen-2-yl)quinoxaline 在 diiodo(p-cymene)ruthenium(II) dimer 、 (S)-3,3'-bis(9-anthracenyl)-1,1′-binaphthyl-2,2′-diyl hydrogenphosphate 、 氢气 作用下， 以 苯 为溶剂， 20.0 ℃ 、4.14 MPa 条件下， 反应 48.0h， 以98%的产率得到(R)-2-(naphthalen-2-yl)-1,2,3,4-tetrahydroquinoxaline
  参考文献：
  名称：

  聚合不对称歧化反应：用于对映选择性还原喹喔啉的金属/布朗斯台德酸中继催化

  摘要：

  已经开发了使用金属/布朗斯台德酸中继催化系统合成手性四氢喹喔啉的二氢喹喔啉的会聚不对称歧化。使用氢气作为还原剂使收敛歧化成为理想的原子经济过程。由于 1,2- 和 1,4- 氢化物转移途径中的空间需求不同，在喹喔啉的还原中观察到对映选择性的显着逆转。

  DOI：

  10.1021/ja200723n

文献信息

• The First General, Efficient and Highly Enantioselective Reduction of Quinoxalines and Quinoxalinones
  作者：Magnus Rueping、Francisco Tato、Fenja. R. Schoepke

  DOI：10.1002/chem.200902907

  日期：——

  Simple yet efficient: A series of diverse substituted tetrahydroquinoxalines and dihydroquinoxalinones have been synthesized for the first time in a highly enantioselective fashion (see scheme). Using this metal‐free hydrogenation it is possible to isolate these products, which are of high pharmaceutical interest, in good yields and with excellent enantioselectivities in a minimal number of reaction

  简单而有效：首次以高度对映选择性的方式合成了一系列多样的取代的四氢喹喔啉和二氢喹喔啉（参见方案）。使用这种无金属的氢化反应，可以在最少的反应步骤中分离出具有高度药用价值，高收率和出色对映选择性的这些产物。
• Asymmetric Transfer Hydrogenation of 2-Substituted Quinoxalines with Regenerable Dihydrophenanthridine
  作者：Zaiqi Han、Xiangqing Feng、Haifeng Du

  DOI：10.1021/acs.joc.3c02954

  日期：2024.3.1

  represents one of the most efficient approaches for the synthesis of optically active tetrahyroquinoxalines. In this paper, we demonstrate a metal-free asymmetric transfer hydrogenation of 2-substituted quinoxalines with regenerable dihydrophenanthridine under H2 using a combination of chiral phosphoric acid and achiral borane as catalysts. A wide range of optically active 2-substituted tetrahydroquinoxalines

  喹喔啉的不对称氢化是合成光学活性四氢喹喔啉的最有效方法之一。在本文中，我们展示了在H 2下，使用手性磷酸和非手性硼烷作为催化剂，2-取代的喹喔啉与可再生二氢菲啶的无金属不对称转移氢化。以≤98% ee 的高产率生产了多种光学活性 2-取代四氢喹喔啉。
• Highly enantioselective synthesis of both enantiomers of tetrahydroquinoxaline derivatives via Ir-catalyzed asymmetric hydrogenation
  作者：Ana Xu、Lanxing Ren、Junrong Huang、Yuxiang Zhu、Gang Wang、Chaoyi Li、Yongqiang Sun、Lijuan Song、Hengzhi You、Fen-Er Chen

  DOI：10.1039/d4sc04222k

  日期：——

  A novel Ir-catalyzed asymmetric hydrogenation protocol for the synthesis of chiral tetrahydroquinoxaline (THQ) derivatives has been developed. By simply adjusting the reaction solvent, both enantiomers of mono-substituted chiral THQs could be selectively obtained in high yields with excellent enantioselectivities (toluene/dioxane: up to 93% yield and 98% ee (R); EtOH: up to 83% yield and 93% ee (S))

  开发了一种用于合成手性四氢喹喔啉 (THQ) 衍生物的新型 Ir 催化不对称氢化方案。通过简单地调整反应溶剂，即可高产率地选择性地获得单取代手性 THQ 的两种对映体，且具有优异的对映选择性（甲苯/二恶烷：收率高达 93%，ee ( R ) 高达 98%；EtOH：收率高达 83%）和 93% ee ( S ))。对于2,3-二取代的手性THQ，获得的顺式氢化产物的收率高达95%，dr为20:1，ee为94%。值得注意的是，该方法也适用于连续流动条件下，产生具有相当收率和对映选择性的克级产品（二恶烷：91% 收率和 93% ee ( R )；EtOH：90% 收率和 87% ee ( S )）。与之前报道的 Ir 催化不对称氢化方案不同，该系统表现出显着的改进，因为它不需要额外的添加剂。此外，还进行了全面的机理研究，包括氘标记实验、对照实验、动力学研究和密度泛函理论（DFT）计算，以揭示两种对映体对映选择性的潜在机制。
• Dihydrophenanthridine: A New and Easily Regenerable NAD(P)H Model for Biomimetic Asymmetric Hydrogenation
  作者：Qing-An Chen、Kai Gao、Ying Duan、Zhi-Shi Ye、Lei Shi、Yan Yang、Yong-Gui Zhou

  DOI：10.1021/ja211684v

  日期：2012.2.1

  A new and easily regenerable NAD(P)H model 9,10-dihydrophenanthridine (DHPD) has been designed for biomimetic asymmetric hydrogenation of imines and aromatic compounds. This reaction features the use of hydrogen gas as terminal reductant for the regeneration of the DHPD under the mild condition. Therefore, the substrate scope is not limited in benzoxazinones; the biomimetic asymmetric hydrogenation of benzoxazines, quinoxafines, and quinolines also gives excellent activities and enantioselectivities. Meanwhile, an unexpected reversal of enantioselectivity was observed between the reactions promoted by the different NAD(P)H models, which is ascribed to the different hydride transfer pathway.
• Asymmetric Organocatalytic Tandem Cyclization/Transfer Hydrogenation: A Synthetic Strategy for Enantioenriched Nitrogen Heterocycles
  作者：Feng Shi、Wei Tan、Hong‐Hao Zhang、Mei Li、Qin Ye、Guan‐Hua Ma、Shu‐Jiang Tu、Guigen Li

  DOI：10.1002/adsc.201300576

  日期：2013.12.16

  AbstractAn asymmetric organocatalytic tandem reaction comprising cyclization/transfer hydrogenation has been established in a compatible and synergistic way, leading to the step‐economical synthesis of enantioenriched tetrahydroquinoxalines and dihydroquinoxalinones from readily accessible materials in excellent enantioselectivity of up to >99% ee. This protocol of a one‐operation tandem reaction combines the merits of both tandem reactions and asymmetric organocatalysis, providing an efficient strategy for concisely and enantioselectively synthesizing nitrogen heterocycles with biological relevance.magnified image