Herein we report a highly para-selective C–H olefination of anilinederivatives by a Pd/S,O-ligand-based catalyst. The reaction proceeds under mild reaction conditions with high efficiency and broad substrate scope, including mono-, di-, and trisubstituted tertiary, secondary, and primary anilines. The S,O-ligand is responsible for the dramatic improvements in substrate scope and the high para-selectivity
para-Alkynylated aromatic amines are obtained without the need to prefunctionalize the starting aniline by Pd/S,O-ligand catalyzed C−Halkynylation reactions.