Environmentally Friendly Nafion-Mediated Friedländer Quinoline Synthesis under Microwave Irradiation: Application to One-Pot Synthesis of Substituted Quinolinyl Chalcones
作者:Cheng-Chung Wang、Chieh-Kai Chan、Chien-Yu Lai
DOI:10.1055/s-0039-1690088
日期:2020.6
An efficient and eco-friendly synthetic route for Friedländer quinoline synthesis of polysubstituted quinolines is described. This green chemical method starts from various 2-aminobenzophenones and mono- or dicarbonyl synthons and uses reusable Nafion NR50 material as a solid catalyst in ethanol undermicrowaveirradiation. The protocol has a high generality of functional groups and provides the desired
PEG-400 as a carbon synthon: highly selective synthesis of quinolines and methylquinolines under metal-free conditions
作者:Chengcheng Ding、Shichen Li、Kaili Feng、Chen Ma
DOI:10.1039/d1gc01617b
日期:——
The remarkable feature of this work was using green, non-toxic PEG-400 as a carbon synthon for highly selective synthesis of quinolines (quinoxalines) and methylquinolines (methylquinoxalines) under metal-free conditions.
Synthesis of Quinolines through Three-Component Cascade Annulation of Aryl Diazonium Salts, Nitriles, and Alkynes
作者:Hao Wang、Qian Xu、Sheng Shen、Shouyun Yu
DOI:10.1021/acs.joc.6b02509
日期:2017.1.6
An efficient and rapid synthesis of multiply substituted quinolines is described. This method is enabled by a three-component cascade annulation of readily available aryl diazonium salts, nitriles, and alkynes. This reaction is catalyst- and additive-free. Various aryl diazonium salts, nitriles, and alkynes can participate in this transformation, and the yields are up to 83%.
Palladium-Catalyzed, Direct Boronic Acid Synthesis from Aryl Chlorides: A Simplified Route to Diverse Boronate Ester Derivatives
作者:Gary A. Molander、Sarah L. J. Trice、Spencer D. Dreher
DOI:10.1021/ja1089759
日期:2010.12.22
new boron reagents and identifying robust catalytic systems for the cross-coupling of these reagents, the fundamental preparations of the nucleophilic partners (i.e., boronicacids and derivatives) has been studied to a lesser extent. Most current methods to accessboronicacids are indirect and require harsh conditions or expensive reagents. A simple and efficient palladium-catalyzed, direct synthesis
Copper-Catalyzed Reactions of Alkenyl Boronic Esters via Chan–Evans–Lam Coupling/Annulation Cascades: Substrate Selective Synthesis of Dihydroquinazolin-4-ones and Polysubstituted Quinolines
作者:Yuge Li、Zifeng Cao、Zhijun Wang、Liang Xu、Yu Wei
DOI:10.1021/acs.orglett.2c02522
日期:2022.9.16
nucleophiles have been established, providing new approaches for one-pot assembly of azacycles. Following the Chan–Evans–Lam C–N couplings, the cyclization processes occur via divergent pathways based on the utilized substrates, affording hydroamination product dihydroquinazolin-4-ones or aromatization product quinolines. Via this one-pot C–N coupling/annulation cascade, the target substituted azacycles can