Synthesis of Polysubstituted Quinolines from α-2-Aminoaryl Alcohols Via Nickel-Catalyzed Dehydrogenative Coupling
作者:Sanju Das、Debabrata Maiti、Suman De Sarkar
DOI:10.1021/acs.joc.7b03198
日期:2018.2.16
This study reports a nickel-catalyzed sustainable synthesis of polysubstitutedquinolines from α-2-aminoaryl alcohols by a sequential dehydrogenation and condensation process that offers the advantages of a low catalyst loading and wide substrate scope. In contrast to earlier reported methods, this strategy allows the use of both primary as well as secondary α-2-aminoaryl alcohols in combination with
NiH-Catalyzed Hydroamination/Cyclization Cascade: Rapid Access to Quinolines
作者:Yang Gao、Simin Yang、Yanping Huo、Qian Chen、Xianwei Li、Xiao-Qiang Hu
DOI:10.1021/acscatal.1c02055
日期:2021.7.2
metal-H-catalyzed hydroamination methodologies, considerable limitations still exist in the selectivehydroamination of alkynes, especially for terminalalkynes. Herein, we develop a highly efficient NiH catalytic system that activates readily available alkynes for a cascade hydroamination/cyclization reaction with anthranils. This mild, operationally simple protocol is amenable to a wide array of alkynes including
尽管金属-H 催化的加氢胺化方法取得了重大成功,但炔烃的选择性加氢胺化仍然存在相当大的局限性,特别是对于末端炔烃。在此,我们开发了一种高效的 NiH 催化系统,可激活容易获得的炔烃,用于与邻氨基苯甲酸的级联加氢胺化/环化反应。这种温和、操作简单的方案适用于各种炔烃,包括末端和内部、芳基和烷基、缺电子和富电子的炔烃,提供结构多样的喹啉,产率非常高(>80 个例子,高达 93%屈服)。该程序的效用体现在几种天然产物的后期功能化以及抗肿瘤分子墓地宁和三链 DNA 嵌入剂的简明合成中。
Synthesis of Quinolines via Iron-Catalyzed Redox Condensation of Alcohols with 2-Nitrobenzyl Methyl Ether/2-Nitrobenzyl Alcohols
The reaction goes equally well when 2-nitrobenzyl methyl ether was used instead of 2-nitrobenzyl alcoholunder otherwise identical conditions, shedding a new light on the study of this quinoline synthetic method. An iron-catalyzed redox condensation of 2-nitrobenzyl alcohols, formic acid, and alcohols has been developed, which affords substituted quinolines with carbon dioxide and water as the only side
Mild and efficient copper-catalyzed oxidative cyclization of oximes with 2-aminobenzyl alcohols at room temperature: synthesis of polysubstituted quinolines
作者:Yan-Yun Liu、Yang Wei、Zhi-Hui Huang、Yilin Liu
DOI:10.1039/d0ob02348e
日期:——
A simple and efficient ligand-free Cu-catalyzed protocol for the synthesis of polysubstituted quinolines via oxidative cyclization of oxime acetates with 2-aminobenzyl alcohols at room temperature has been developed. The presented approach provides a new synthetic pathway leading to polysubstituted quinolines with good functional group tolerance under mild conditions. Moreover, this transformation