We report a novel and practical one-pot Rh(III)-catalyzed strategy to construct benzimidazo[1,2-a]quinolines from readily available imidamides and anthranils. The cascade reaction proceeds via a C-H amination-cyclization-cyclization process in ionic liquid without any additives and possesses simple operation, moderate-to-high yield, and broad substrate scope features, which will provide the reference
Catalyst-free cyclization of anthranils and cyclic amines: one-step synthesis of rutaecarpine
作者:Jian Li、Zheng-Bing Wang、Yue Xu、Xue-Chen Lu、Shang-Rong Zhu、Li Liu
DOI:10.1039/c9cc06160f
日期:——
An efficient synthesis of a variety of quinazolinone derivatives via a direct cyclization reaction between commercially available anthranils and cyclic amines is described. The developed transformation proceeds with the merits of high step- and atom-efficiency, a broad substrate scope, and good to excellent yields, without additional catalysts, and offers a practical way for the preparation of rutaecarpine
Access to Structurally Diverse Quinoline-Fused Heterocycles via Rhodium(III)-Catalyzed C–C/C–N Coupling of Bifunctional Substrates
作者:Songjie Yu、Yunyun Li、Xukai Zhou、He Wang、Lingheng Kong、Xingwei Li
DOI:10.1021/acs.orglett.6b01032
日期:2016.6.17
Rhodium(III)-catalyzed C–H activation of heteroarenes and functionalization with bifunctional substrates such as anthranils allows facile construction of quinoline-fused heterocycles under redox-neutral conditions. The couplings feature broad substrate scope and provide step-economical access to two classes of quinoline-fused condensed heterocycles.
Rhodium-Catalyzed Amination and Annulation of Arenes with Anthranils: C-H Activation Assisted by Weakly Coordinating Amides
作者:Manman Wang、Lingheng Kong、Fen Wang、Xingwei Li
DOI:10.1002/adsc.201700899
日期:2017.12.19
A rhodium(III)‐catalyzed C−H amination of benzamides and isoquinolones with anthranils has been realized under assistance of weakly coordinating amide, leading to a bifunctionalized amination product which can further cyclize to acridine under in situ or ex situ conditions.