Combining Zn ion catalysis with homogeneous gold catalysis: an efficient annulation approach to N-protected indoles
作者:Yanzhao Wang、Lianzhu Liu、Liming Zhang
DOI:10.1039/c2sc21333h
日期:——
The Fischer indole synthesis is perhaps the most powerful method for indole preparation, but it often suffers from low regioselectivities with unsymmetric aliphatic ketone substrates and strong acidic conditions and is not suitable for alpha,beta-unsaturated ketones. In this article, we disclose an efficient synthesis of N-protected indoles from N-arylhydroxamic acids/N-aryl-N-hydroxycarbamates and