Herein, we report a general approach for the efficient
construction
of three-dimensional bisindolines via oxidative coupling cyclization
in an intermolecular manner. This reaction is featured by its operational
simplicity, metal-free conditions, lack of protecting group, and high
selectivity. Notably, a wide range of anilines are suitable in this
intermolecular cyclization, furnishing corresponding bisindolines
in up to 98% yield.