HUSY zeolite promoted hydrophenylation of alkynes conjugated with electron-withdrawing substituents

Arylacetylenes, conjugated with electron-withdrawing groups, ArC≡C(EWG) [EWG = SO₂Ph, PO(OEt)₂, COMe, CO₂Me] in reaction with benzene at room temperature or 130°C (glass high pressure tube) for 1–10h under the action of acidic zeolite HUSY (Si /Al ratio is 15) afford products of hydrophenylation of acetylene bond Ar(Ph)C=CH(EWG) in yields of 56–98%.