An efficient and practical palladium-catalyzed aerobic oxidative approach to afford functionalized 2-substituted quinolines in moderate to good yields from readily available allylbenzenes with aniline is developed. The present annulation process has high functional-group tolerance and high atom economy, making it a valuable and practical method in synthetic and medicinal chemistry. Moreover, this transformation
A series of substituted quinolines was prepared from arylamines, aldehydes, and terminal olefins (see scheme). The palladium‐catalyzed sequentialformation of CCbonds proceeds smoothly with both electron‐deficient and electron‐rich olefins. When acrylic acid is used as terminal olefin, decarboxylation occurs to provide 2‐substituted quinolines.
Palladium-catalyzed synthesis of quinolines from allyl alcohols and anilines
作者:Jingxiu Xu、Jing Sun、Jinwu Zhao、Bin Huang、Xiaohan Li、Yulun Sun
DOI:10.1039/c7ra06425j
日期:——
A process for quinolinesynthesis through palladium-catalyzed oxidative cyclization of aryl allyl alcohols and anilines is described. This process works in the absence of acid, base and any other additive and has a broad substrate scope, tolerating electron-withdrawing groups such as nitryl, trifluoromethyl and so on. A series of quinolines are prepared in satisfactory yields.