Pd-mediated synthesis of 2-arylquinolines and tetrahydropyridines from modified Baylis–Hillman adducts
摘要:
We synthesized 2-arylquinolines and tetrahydropyridines via palladium-mediated Heck type reactions starting from the Baylis-Hillman adducts. 2-Arylquinolines were prepared via the Heck type cyclization followed by concomitant aerobic oxidation. (c) 2008 Elsevier Ltd. All rights reserved.
Microwave-Assisted Synthesis of Polysubstituted 4-Quinolones from Deprotonated α-Aminonitriles
作者:Alexandra Romek、Till Opatz
DOI:10.1002/ejoc.201000858
日期:2010.10
The α-alkylation of deprotonated N-aryl-α-aminonitriles with α-bromoesters furnishes intermediates that can be cyclized to 4-quinolones upon microwave irradiation. Alternatively, base-induced dehydrocyanation of the alkylation products furnishes enaminoesters, which can, for example, be converted into quinoline-3-carboxylates.
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。
An efficient synthesis of quinolines via copper-catalyzed C–N cleavage
An efficient method to synthesize substituted quinolines from ketones and 2-amino benzylamines is described.
描述了一种从酮和2-氨基苄胺合成取代喹啉的高效方法。
Environmentally benign nucleophilic substitution reaction of arylalkyl halides in water using CTAB as the inverse phase transfer catalyst
作者:Atul K. Godha、Jayaraman Thiruvengadam、Viswanadhan Abhilash、Prajwal Balgi、A. V. Narayanareddy、Kumaresan Vignesh、Amol V. Gadakh、A. M. Sathiyanarayanan、Sambasivam Ganesh
DOI:10.1039/c9nj03941d
日期:——
An environmentally benign, practically scalable and highly selective C-arylalkylation of active methylene compounds is developed using CTAB as the inverse phase transfer catalyst in water. The methodology developed is elaborated into the one-pot synthesis of quinoline derivatives and also applicable to the regioselective N-aralkyl of 2-pyridones.