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。
Access to Quinolines through Gold-Catalyzed Intermolecular Cycloaddition of 2-Aminoaryl Carbonyls and Internal Alkynes
作者:Shuting Cai、Jing Zeng、Yaguang Bai、Xue-Wei Liu
DOI:10.1021/jo202281x
日期:2012.1.6
to polyfunctionalized quinolines was developed. In the presence of a highly efficient combination encompassing (PPh)3AuCl and AgOTf, the reactions between 2-aminocarbonyls and an array of internal alkynes proceeded smoothly to afford quinoline derivatives in good to excellent yields (up to 93%).
An efficient heterogeneous gold(I)-catalyzed intermolecular cycloaddition of 2-aminoaryl carbonyls and internal alkynes leading to polyfunctionalized quinolines
作者:Wenli Hu、Weisen Yang、Tao Yan、Mingzhong Cai
DOI:10.1080/00397911.2019.1567788
日期:2019.3.19
first heterogeneous intermolecular cycloaddition of 2-aminoaryl carbonyls and internal alkynes was realized in DMF at 100 °C by using a triphenylphosphine-functionalized MCM-41-supported gold(I) complex [MCM-41-PPh3-AuCl] and AgOTf as catalysts, yielding a variety of polyfunctionalized quinolines in good to excellent yields. This heterogeneous gold(I) complex could easily be prepared via a simple two-step
A highly regioselective Friedländer reaction mediated by lanthanum chloride
作者:Ying Chen、Jinkun Huang、Tsang-Lin Hwang、T.J. Li、Sheng Cui、Johann Chan、Matthew Bio
DOI:10.1016/j.tetlet.2012.04.038
日期:2012.6
A highly efficient and regioselective Friedlander reaction of unsymmetrical 1,3-diketones with 2-aminoaryl aldehydes (ketones) is described. The methodology leads to the synthesis of a broad scope of substituted quinolines in high yield and excellent regioselectivity. (C) 2012 Elsevier Ltd. All rights reserved.