Copper(I)-catalyzed cascade dearomatization of 2-substituted tryptophols with iodonium [corrected] salts.

Copper(I)-catalyzed dearomative arylation and vinylation of 2-substituted tryptophols were realized with a subsequent cyclization reaction. The cascade dearomatization sequence provided versatile furoindoline derivatives with two quaternary carbon centers in good to excellent yields.