A Method for the Synthesis of Substituted Quinolines via Electrophilic Cyclization of 1-Azido-2-(2-propynyl)benzene
作者:Zhibao Huo、Ilya D. Gridnev、Yoshinori Yamamoto
DOI:10.1021/jo902603v
日期:2010.2.19
A new and efficient strategy for the synthesis of substituted quinolines viaelectrophilic cyclization is developed. The intramolecular cyclization of 1-azido-2-(2-propynyl)benzene 1 proceeds smoothly in the presence of electrophilic reagents (I2, Br2, ICl, NBS, NIS, and HNTf2) in CH3NO2 at room temperature or in the presence of catalytic amounts of AuCl3/AgNTf2 in THF at 100 °C to afford the corresponding
An efficient and practical palladium-catalyzed aerobic oxidative approach to afford functionalized 2-substituted quinolines in moderate to good yields from readily available allylbenzenes with aniline is developed. The present annulation process has high functional-group tolerance and high atom economy, making it a valuable and practical method in synthetic and medicinal chemistry. Moreover, this transformation
Dehydrogenative Synthesis of Quinolines, 2-Aminoquinolines, and Quinazolines Using Singlet Diradical Ni(II)-Catalysts
作者:Gargi Chakraborty、Rina Sikari、Siuli Das、Rakesh Mondal、Suman Sinha、Seemika Banerjee、Nanda D. Paul
DOI:10.1021/acs.joc.8b03070
日期:2019.3.1
Simple, straightforward, and atom economic methods for the synthesis of quinolines, 2-aminoquinolines, and quinazolines via biomimetic dehydrogenative condensation/coupling reactions, catalyzed by well-defined inexpensive and easy to prepare singletdiradical Ni(II)-catalysts featuring two antiferromagnetically coupled singletdiradical diamine type ligands are described. Various polysubstituted quinolines
A nickel catalyzed acceptorless dehydrogenative approach to quinolines
作者:Seuli Parua、Rina Sikari、Suman Sinha、Siuli Das、Gargi Chakraborty、Nanda D. Paul
DOI:10.1039/c7ob02670f
日期:——
benign, one-step synthesis of substitutedquinoline derivatives was achieved by acceptorless dehydrogenative coupling of o-aminobenzylalcohols with ketones and secondary alcohols catalyzed by a cheap, earth abundant and easy to prepare nickel catalyst [Ni(MeTAA)], featuring a tetraaza macrocyclic ligand (tetramethyltetraaza[14]annulene (MeTAA)). A wide variety of substitutedquinolines were synthesized