Chem. Sci., 2025, Accepted Manuscript DOI: 10.1039/D5SC05528H, Edge Article Kazutoshi Nishimura, Hiroki Iwamoto, Yuji Nishii, Koji Hirano A strategy for the generation of arsenium dication equivalents from readily available and easy-to-handle phenylarsine oxide and Tf2O has been developed. The in-situ-generated dication equivalent can react with biarylborates to...