Iodine-mediated intramolecular amination of ketones: the synthesis of 2-acylindoles and 2-acylindolines by tuning N-protecting groups
作者:Wen-Chao Gao、Shan Jiang、Ruo-Lin Wang、Chi Zhang
DOI:10.1039/c3cc40797g
日期:——
A general method for constructing both 2-acylindoles and 2-acylindolines via I2-mediated intramolecular C-N bond formation is presented, and the selective formation of either 2-acylindoles or 2-acylindolines just depends on the nitrogen protecting groups used in the same substrate skeletons.
Batting the ylides: A simple procedure carried out under mild conditions allows the direct and efficientsynthesis of structurally diverse indoles. This approach involves a cascadereaction of sulfurylides and N‐(ortho‐chloromethyl)arylamides (see scheme).
Palladium-catalyzed tandem oxidative annulation of α-amino ketones leading to 2-aroylindoles
作者:Tao-Shan Jiang、Long Dai、Yuhui Zhou、Xiuli Zhang
DOI:10.1016/j.tet.2019.130917
日期:2020.2
A simple synthesis of 2-aroylindoles via palladium-catalyzed tandem oxidative annulation directly from α-amino ketones has been developed. In this transformation, two-step reaction including oxidation of α-amino aetones to generate imine intermediates and subsequent palladium-catalyzed aerobic annulation to give 2-aroylindoles was compatible in onepot.