formation or C–C bond formation upon homocondensation or reaction with simple olefins, respectively. Cyclization followed by a final oxidation generates these classes of interesting bioactive heterocycles in one synthetic transformation. Additionally, the one-pot multicomponent synthesis of quinolines from anilines, aldehydes, and olefins has also been successfully developed under these mild oxidative conditions
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.
The reaction of imines with alkynes and alkenes, in the presence of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), to give quinoline derivatives is described. The mechanism of the annulation is discussed, and evidence supporting a non-concerted pathway, at least when the alkene is butyl vinyl ether, is reported. Preliminary information is also given about solid adducts of imines with DDQ, which do
Silver-Catalyzed Oxidative Coupling of Aniline and Ene Carbonyl/Acetylenic Carbonyl Compounds: An Efficient Route for the Synthesis of Quinolines
作者:Xu Zhang、Xuefeng Xu
DOI:10.1002/asia.201402742
日期:2014.11
An efficient silver‐mediated coupling of aniline with ene carbonyl/acetylenic carbonyl compounds for the synthesis of quinolines is reported. The transformation is effective for a broad range of substrates, thus enabling the expansion of substituent architectures on the heterocyclic framework. The electronic properties of the substituents on the amine have been investigated. It was found that molecules
Palladium-Catalyzed/Copper-Mediated Desulfurization and Arylation of Quinoline-2-(1H)-thione for Rapid Access to Quinoline Derivatives
作者:Hai-Long Lu、Fu-Hu Guo、Tong-Lin Wang、Xi-Cun Wang、Zheng-Jun Quan
DOI:10.1055/s-0039-1690765
日期:2020.3
An efficient method for carbon–carbonbond formation is described. The process employs the palladium-catalyzed and copper-mediated cross-coupling of quinoline-2-(1H)-thiones with arylboronic acids or alkynes through C–S bondcleavage without an inert atmosphere. The method provides rapid and general access to a diverse range of 2-substituted quinolines in a single step from a wide range of quinoline-2-(1H)-thiones