A method for the synthesis of phenanthridines from benzylamines and aryl iodides which uses a dual palladium-catalyzed process is developed. The domino sequence ends via an intramolecular amination and an oxidative dehydrogenation. No protecting group or prefunctionalization of the amine is required, and the process uses dioxygen as the terminal oxidant.
The Action of Vanadium Oxytrifluoride on N-Arylbenzylamines—a Route to Some Phenanthridines
作者:Andris J. Liepa、Roland N. Nearn、Denis M. J. Wright
DOI:10.1071/ch03177
日期:——
of vanadium oxytrifluoride upon electron-rich N-arylbenzylamines provides a convenient synthesis of phenanthridines. Excess of oxidant can lead to selective hydroxylation of a methyl substituent. Benzylamines with a phosphonate substituent on the methylene group lead to 6-substitutedphenanthridines.