A Multicomponent Reaction of Acetals for the Preparation of Quinolines
作者:Xue-Lin Zhang、Qin-Pei Wu、Qing-Shan Zhang
DOI:10.3184/174751913x13814036942713
日期:2013.11
A straightforward, mild, one-pot method has been found for the preparation of quinolines via a multi-component reaction using acetals or cyclic acetals, aromatic amines and alkynes catalysed by Bi(OTf)3. It gives good yields under mild conditions. This approach has been successfully applied for the synthesis of a range of quinolines with a variety of functional groups.
Brønsted acid-catalyzed metal- and solvent-free quinoline synthesis from<i>N</i>-alkyl anilines and alkynes or alkenes
作者:Waqar Ahmed、Sheng Zhang、Xiaoqiang Yu、Yoshinori Yamamoto、Ming Bao
DOI:10.1039/c7gc03175k
日期:——
Brønstedacid-catalyzed cyclization reactions of N-alkyl anilines with alkynes or alkenes in the presence of oxygen gas as an oxidant under metal- and solvent-free conditions are described. Various quinoline derivatives are obtained in satisfactory to excellent yields. Different groups, such as methyl, fluoro, chloro, bromo, methoxy, and ester linked on benzene rings, are tolerated under optimized
An improved and practical synthesis of substituted quinolines and bis(indolyl)methanes was achieved under microwave condition using Zn(OTf)(2) as catalyst. The synthesized compounds have been screened for antimicrobial and antioxidant activities. (C) 2010 Elsevier Ltd. All rights reserved.