A Cascade Phosphinoylation/Cyclization/Desulfonylation Process for the Synthesis of 3‑Phosphinoylindoles

3-Phosphinoylindole derivatives play important roles as pharmaceutical drugs and ligands. A new method for the synthesis of 3-phosphinoylindole derivatives has been achieved through silver-mediated cycloaddition between N-Ts-2-alkynylaniline derivatives and H-phosphine oxides. This transformation offers a straightforward route to the formation of the C–P bond, indole ring, and desulfonylation in one step