Mercuric Triflate−(TMU)3-Catalyzed Cyclization of ω-Arylalkyne Leading to Dihydronaphthalenes

Abstract
Efficient arylyne cyclization catalyzed by the Hg(OTf)2−(TMU)3 complex has been developed. The reaction was carried out at ambient temperature in acetonitrile, and the catalytic cycle reaches up to 1000 turnovers.