A convenient new method to construct 1-alkynyl cyclopropanol and its synthetic application to prepare trisubstituted dienones

A new synthetic route is developed to afford 1-alkynyl cyclopropanol from 1-arylsulfonyl cyclopropanol 1, which then react with aryl iodide to construct trisubstituted cross-conjugated dienones 7 through a palladium-catalyzed process.