Mannich Reaction of Indole with Cyclic Imines in Water

作者:Xie, Liang-Hui; Cheng, Jie; Luo, Zi-Wei; Lu, Gui*
来源:Tetrahedron Letters, 2018, 59(5): 457-461.
DOI:10.1016/j.tetlet.2017.12.069

摘要

An efficient MsOH promoted direct Mannich reaction of indoles with alpha-nonsubstituted aliphatic cyclic imines has been developed. The reactions were performed in water and the obtained piperidin-2-yl-indoles act as a useful precursor for the synthesis of various alkaloid-like derivatives.