Palladium-Catalyzed Aromatization of Alkynes

The recent progress in palladium-catalyzed cyclotrimerization aromatization of alkynes is reviewed, espercially for the [ 2+2+2 ] cyclotrimerization aromatization of alkynes, [ 4+2 ] aromatization of diynes, conjugated enynes. Meanwhile, some typical catalyst systems and the reaction mechanism, as well as hotspots in this area are described here.