Rapid ruthenium-catalyzed synthesis of pyranopyrandiones by reconstructive carbonylation of cyclopropenones involving C-C bond cleavage

A novel and rapid ruthenium-catalyzed synthesis of pyranopyrandiones by the reconstructive carbonylation of cyclopropenones is developed. All pyranopyrandiones prepared in this study are new compounds, which are quite attractive as novel functional monomers due to their characteristic physical and chemical properties.