Visible-light-induced generation of alkenyl radicals from alkenyl sulfonium salts: direct synthesis of 11-alkenyl-substituted dibenzodiazepines

Alkenyl radicals serve as the key intermediate in the tandem cyclization of alkenyl sulfonium salts with o -isocyanodiaryl amines, achieving the novel and highly efficient one-step synthesis of 11-alkenyl-substituted dibenzodiazepines.