Synfacts, Table of Contents Synfacts 2021; 17(02): 0148DOI: 10.1055/s-0040-1719343 Synthesis of Materials and Unnatural Products Synthesis of Polycyclic Pyrylium and Pyridinium Cations via a Rhodium-Catalyzed Annulation CascadeContributor(s): Timothy M. Swager , Haosheng FengRecommend Article Abstract Buy ArticleKey words Key wordsannulation - rhodium catalysis - C–H activation - cascade reaction Full Text