TiCl4/t-BuNH2 as the sole catalyst for a hydroamination-based Fischer indole synthesis
摘要:
A system comprising TiCl4 and t-BuNH2 acts as a catalyst for highly regioselective hydroamination reactions of alkynes using hydrazines and at the same time a Lewis acid in the transformation of the generated hydrazones into indole derivatives, while a 1,3-diyne is converted to pyrroles using the same precatalyst. (C) 2004 Elsevier Ltd. All rights reserved.
TiCl4/t-BuNH2 as the sole catalyst for a hydroamination-based Fischer indole synthesis
作者:Lutz Ackermann、Robert Born
DOI:10.1016/j.tetlet.2004.10.160
日期:2004.12
A system comprising TiCl4 and t-BuNH2 acts as a catalyst for highly regioselective hydroamination reactions of alkynes using hydrazines and at the same time a Lewis acid in the transformation of the generated hydrazones into indole derivatives, while a 1,3-diyne is converted to pyrroles using the same precatalyst. (C) 2004 Elsevier Ltd. All rights reserved.