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
Facile synthesis of substituted quinolines by iron(<scp>iii</scp>)-catalyzed cascade reaction between anilines, aldehydes and nitroalkanes
作者:Sachinta Mahato、Anindita Mukherjee、Sougata Santra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1039/c9ob01294j
日期:——
A library of substituted quinolines has been synthesized by the reaction of aldehydes, anilines and nitroalkanes using a catalytic amount of Fe(iii) chloride. The reaction is a simple, efficient, one-pot, three-component domino strategy in ambient air which afforded the products in high yields. A probable pathway of the reaction is a sequential aza-Henry reaction/cyclization/denitration. The use of