Organoselenium-catalyzed synthesis of indoles through intramolecular C-H amination

A new and efficient route for organoselenium-catalyzed synthesis of indoles via intramolecular C-H amination has been developed. The reaction conditions were mild and the desired products were formed in up to 99% yield. When the method was applied in the reaction of a trisubstituted alkene, the corresponding indole was obtained in 99% yield via 1,2-phenyl migration.