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.
Phosphine free Mn-complex catalysed dehydrogenative C–C and C–heteroatom bond formation: a sustainable approach to synthesize quinoxaline, pyrazine, benzothiazole and quinoline derivatives
作者:Kalicharan Das、Avijit Mondal、Dipankar Srimani
DOI:10.1039/c8cc05877f
日期:——
Herein the first sustainable synthesis of quinoxalines, pyrazines and benzothiazoles catalysed by a phosphine free Mn(I) complex via acceptorless dehydrogenative coupling (ADC) is reported. This method is also applied successfully to synthesize quinolines via the dehydrogenation (removal of H2) and condensation (removal of H2O) reaction between 2-aminobenzyl alcohols and secondary alcohols.
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
one-pot approach for the synthesis of quinolines from o-aminothiophenol and 1,3-ynone under mild conditions is disclosed. With the aid of ESI-MS analysis and parallel experiments, a three-step mechanism is proposed-a two-step Michael addition-cyclization condensation step leading to intermediate 1,5-benzothiazepine catalyzed by zirconocene amino acid complex Cp2Zr(η1-C9H10NO2)2, followed by I2-mediated
Regiospecific Three-Component Access to Fluorescent 2,4-Disubstituted Quinolines via One-Pot Coupling-Addition-Cyclocondensation-Sulfur Extrusion Sequence
作者:Sven Rotzoll、Benjamin Willy、Jan Schönhaber、Frank Rominger、Thomas J. J. Müller
DOI:10.1002/ejoc.201000212
日期:——
4-Di- and 2,4,7-trisubstituted quinolines are readily synthesized in a regioselective fashion from acyl chlorides, terminal alkynes, and 2-aminothiophenols by a consecutive, microwave-assisted one-potthree-component Sonogashira coupling-Michael addition-cyclocondensation sequence and following sulfur extrusion in moderate to good yields. The terminal sulfur extrusion step was studied by DFT computations