Highly efficient chemical fixation of carbon dioxide catalyzed by high-valent tetraphenylporphyrinatotin(IV) triflate

High-valent tetraphenylporphyrinatotin(IV) triflate, [SnIV(TPP)(OTf)2], was found as an efficient catalyst for the coupling of several epoxides (linear and cyclic) with carbon dioxide in the presence of tetrabutylphosphonium bromide as co-catalyst at atmospheric pressure. The reaction temperature, kind of solvent, co-catalyst and axial ligand effect were also investigated.

High-valent tetraphenylporphyrinatotin(IV) triflate, [SnIV(TPP)(OTf)2], was found as an efficient catalyst for the coupling of several epoxides (linear and cyclic) with carbon dioxide in the presence of tetrabutylphosphonium bromide as co-catalyst at atmospheric pressure. The reaction temperature, kind of solvent, co-catalyst and axial ligand effect were also investigated.Figure optionsDownload as PowerPoint slideResearch highlights
► Electron-deficient tin(IV)porphyrin was used as catalyst.
► Cyclic carbonates were obtained by the reaction of CO2 with epoxides.
► The reaction was carried out at atmospheric pressure.