Access to functionalized pyrrolidones via copper-catalyzed aminooxygenation of unactivated alkenes
作者:Wei-Hao Rao、Li-Li Jiang、Fang-Yuan Chen、Meng Zhang、Yi-Yuan Guo、Jia-Jia Chen、Ying Cui、Guo-Dong Zou、Lin Tang
DOI:10.1016/j.tetlet.2019.151540
日期:2020.2
A simple and efficient copper-catalyzed aminooxygenation of unactivated alkenes with commercially available (2,2,6,6-tetramethylpiperidin-1-yl)-oxyl (TEMPO) as an oxygen source is reported. With this protocol, a variety of functionalized pyrrolidones were obtained in good to excellent yields, and good tolerance of functional groups and broad substrate scope were observed. Notably, the N-cyclization step selectively proceeded in an exo manner, and this protocol provides an efficient and straightforward approach to prepare vicinal amino alcohols. (C) 2019 Elsevier Ltd. All rights reserved.