Palladium‐Catalyzed Double Suzuki Reactions: Synthesis of Dibenzo[4,5:6,7]cyclohepta[1,2,3‐de]naphthalenes

Abstract As an indispensable member in the family of polycyclic aromatic hydrocarbons (PAHs), the synthesis of dibenzo[4,5:6,7]cyclohepta‐[1,2,3‐de]naphthalene (DBnaphthalene) has not been recorded, despite the fact that similar structure of this moiety exists widely in many popular PAHs with unique optical and electronical properties. Herein we report the first synthesis of dibenzo[4,5:6,7]cyclohepta‐[1,2,3‐de]naphthalene and its derivatives using palladium‐catalyzed double Suzuki coupling reactions. These DBnaphthalenes are expected to be useful for the “bottom‐up” synthesis of functional aromatic molecules.