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.
Palladium-Catalyzed Nucleophilic Substitution/C–H Activation/Aromatization Cascade Reaction: One Approach To Construct 6-Unsubstituted Phenanthridines
A facile and practical palladium-catalyzed nucleophilic substitution/C–H activation/aromatization cascade reaction has been developed. A range of 6-unsubstituted phenanthridines could be obtained in moderate to good yields (31–85%) with readily prepared N-Ms arylamines and commercially available 2-bromobenzyl bromide derivatives as starting materials. The potential application of the protocol was also