Polyene cyclization, oxymercuration, catalytic hydration of alkynes, catalytic hydrative enyne cyclization, catalytic arylyne cyclization, catalytic biomimetic tandem cyclization, catalyticketoalkyne cyclization leading to furans, catalytic cyclization of propargyl tert-butyl carbonates leading to cyclic carbonates, catalytic cycloisomerization of alkynyl aniline derivatives leading toindoles, catalytic alkynoic acid cyclization leading to lactones, catalytic glycosylation. Polyene cyclization, oxymercuration, catalytic hydration of alkynes, catalytic hydrative enyne cyclization, catalytic arylyne cyclization, catalytic biomimetic tandem cyclization, catalyticketoalkyne cyclization leading to furans, catalytic cyclization of propargyl tert-butyl carbonates leading to cyclic carbonates, catalytic cycloisomerization of alkynyl aniline derivatives leading toindoles, catalytic alkynoic acid cyclization leading to lactones, catalytic glycosylation.