Iridium-Catalyzed P(III)-Directed ortho-C-H Silylation of Arylphosphines with Hydrosilanes

Key Points

• To explore a ligand-free iridium-catalyzed method for ortho-C-H silylation of arylphosphines.
• Used iridium as a catalyst for the reaction.
• Employed P(III) direction for selectivity.
• Tested various commercial monophosphine ligands with trialkylsilanes of differing properties.
• Successfully achieved mild reaction conditions.
• Demonstrated broad substrate scope across different ligands.
• Illustrated different outcomes based on steric and electronic variations of trialkylsilanes.