Facile Formation of Eight‐membered Rings of Indoloazocine Framework via Intramolecular Oxidative Heck Cyclization

A facile method has been developed for the synthesis of indoloazocine framework. Through an oxidative Heck intramolecular cyclization of acrylated tryptamide derivatives, a series of azocino[5,4‐b] indolone derivatives were synthesized.