Photoinduced Three‐Component Cyclization of Arylamines, Enaminones and Difluorobromoacetates to 2,3‐Difunctionalized Quinolines
作者:Jie Huo、Xiao Geng、Wanmei Li、Pengfei Zhang、Lei Wang
DOI:10.1002/adsc.202200615
日期:2022.10.18
A photoinduced multicomponent reaction of arylamines, enaminones and difluorobromoacetates for the synthesis of 2,3-difunctionalized quinolines is reported. This strategy features broad functional groups tolerance and wide substrate scopes that enables further synthetic applications of the obtained products. Mechanistic studies reveal that intermolecular [3+3] cyclization between in-situ generated
The reaction of anilines, benzaldehydes. and ethyl 3,3-diethoxypropionate in the presence of Yb(OTf)(3) proceeded under mild reaction conditions to give dihydropyridines (DHPs). We have found that the reaction depended on the solvent and the DHPs were obtained selectively in 1,4-dioxane as a solvent. Various 2,6-unsubstituted DHPs were synthesized in one pot in satisfactory yields. (C) 2011 Elsevier Ltd. All rights reserved.
Selective reductive annulation reaction for direct synthesis of functionalized quinolines by a cobalt nanocatalyst
funcitonalized quinolines with the merits of broad substrate scope, good functional group tolerance, excellent hydrogen transfer selectivity, reusable earth-abundant metal catalyst, and operational simplicity. The developed chemistry paves the ways for further design of hydrogen transfer-mediated coupling reactions by developing heterogeneous catalysts with suitable supports.