Mingyue Cui, Juan Li, Rongqiang Tian,* Zheng Duan* Tandem [5+1]/[8+2] Cycloaddition Reactions Involving Phosphiranes and Tropones: A Facile Access to 6,5,7- Fused 

Tricyclic Skeleton. Org. Chem. Front., 2022, DOI: 10.1039/D2QO00386D