DOI: 10.1039/d6ob00903d ISSN: 1477-0520
Synthesis of polymethylene-linked bis(cyclobutane-fused chromanones) mediated by gold photocatalysis
Junying Wang, Vladislav A. Voloshkin, Sayan Dutta, Yuan Zhao, Tommaso Ruggiero, Kristof Van Hecke, Bholanath Maity, Luigi Cavallo, Steven P. NolanWe report a gold-mediated energy transfer strategy for the sequential double [2 + 2] photocycloaddition of coumarins with dienes, providing access to polymethylene-linked bis(cyclobutane-fused chromanones).