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
Metal-Free Synthesis of 2-Substituted Quinolines via High Chemoselective Domino Condensation/Aza-Prins Cyclization/Retro-Aldol between 2-Alkenylanilines with β-Ketoesters
作者:Jiang Nan、Pu Chen、Yuxin Zhang、Yun Yin、Bo Wang、Yangmin Ma
DOI:10.1021/acs.joc.0c02063
日期:2020.11.6
A highly chemoselective domino condensation/aza-Prinscyclization/retro-aldol between 2-alkenylanilines with β-dicarbonyl compounds under metal-free conditions was accomplished, giving a large category of valuable 2-substituted quinolines in good yields with excellent functional group toleration. This newly established process, adopting β-ketoesters as masked C1 synthons via C–C cleavage, could even
Triazole-gold (TAAu) catalyzed three-component coupling (A3 reaction) towards the synthesis of 2, 4-disubstituted quinoline derivatives
作者:Fusong Zhang、Qi Lai、Xiaodong Shi、Zhiguang Song
DOI:10.1016/j.cclet.2018.05.036
日期:2019.2
A gold-catalyzedthree-component coupling reaction (A3 reaction) was developed as an efficient approach for the synthesis of challenging 2, 4-disubstituted quinoline derivatives. Compared to previously reported Cu/Au bi-catalyst system, this protocol enables achieving A3 reaction only in the presence of triazole-gold catalyst. Notably, 4-alkyl substituted or 2-alkyl substituted quinoline derivatives
Iron-catalyzed tandem reactions of aldehydes, terminal alkynes, and primary amines as a strategy for the synthesis of quinoline derivatives
作者:Yicheng Zhang、Pinhua Li、Lei Wang
DOI:10.1002/jhet.417
日期:2011.1
FeCl3‐catalyzed three‐component tandem condensation/addition/cyclization/oxidation reactions of aldehydes, terminal alkynes, and primary amines have been developed. The processes can provide a diverse range of quinoline derivatives in good yields from simple starting materials. A possible reaction mechanism was proposed. J. Heterocyclic Chem., (2010).
An Efficient Synthesis of Substituted Quinolines via Indium(III) Chloride Catalyzed Reaction of Imines with Alkynes
作者:Mei Zhu、Weijun Fu、Chen Xun、Guanglong Zou
DOI:10.5012/bkcs.2012.33.1.43
日期:2012.1.20
synthetic method for the preparation of quinolines through indium(III) chloride-catalyzed tandem addition-cyclization-oxidation reactions of imines with alkynes was developed. The processes can provide a diverse range of quinoline derivatives in good yields from simple imines and alkynes.