Synthesis of bishomocubanone derivatives via visible‐light‐induced intramolecular [2+2] cycloaddition reaction

IIn this paper, a visible‐light‐induced intramolecular [2+2] cycloaddition has been revealed to synthesize the bishomocubanone derivatives in moderate to excellent yield under mild conditions. This method demonstrated a broad substrate scope and excellent functional‐group tolerance, affording cubane precursors and a series of bishomocubanones. Meanwhile, a hundred‐gram scale experiment of this method has been employed to synthesize cubane precursors with 98% yield.