Rhodium(iii)-catalyzed diverse [4 + 1] annulation of arenes with 1,3-enynes via sp3/sp2 C–H activation and 1,4-rhodium migration† †Electronic supplementary information (ESI) available. CCDC 1861504 and 1457168. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c9sc