Ligand-Relay Strategy Enabling Copper-Catalyzed C–C/C–O/C–N Cascade Trifunctionalization of Internal Alkynes and Propargylic Sites: Synthesis of Benzofuran-β-Lactams - Le Wang; Jie Xiao; Zi-Hao Li; Shen-Yuan Zhang; Yuan She; Shu-Yu Zhang (Journal of the American Chemical Society, 2026)