Direct Functionalization of (Un)protected Tetrahydroisoquinoline and Isochroman under Iron and Copper Catalysis: Two Metals, Two Mechanisms
作者:Michael Ghobrial、Michael Schnürch、Marko D. Mihovilovic
DOI:10.1021/jo201511d
日期:2011.11.4
either simple copper or iron catalysts. N-protected and unprotected tetrahydroisoquinolines (THIQ) could be used as starting materials. Extension of the substrate scope of the pronucleophile from indoles to pyrroles and electron-rich arenes was realized. Additionally, methoxyphenylation is not limited to THIQ but can be carried out on isochroman as well, again employing iron and coppercatalysis.
Mannich Reaction of Indole with Cyclic Imines in Water
作者:Liang-Hui Xie、Jie Cheng、Zi-Wei Luo、Gui Lu
DOI:10.1016/j.tetlet.2017.12.069
日期:2018.1
An efficient MsOH promoted direct Mannich reaction of indoles with α-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.