A new hybrid porphyrin-heteropolyacid material: Synthesis, characterization and investigation as catalyst in Baeyer–Villiger oxidation. Synergistic effect

• New organic–inorganic hybrid [H4TPP][HPW12O40] was synthesized and characterized.
• [H4TPP][HPW12O40] hybrid and its molybdenum analogue were applied for the first time in the Baeyer–Villiger oxidation.
• Synergistic effect of porphyrin-heteropolyacid hybrids results in their high catalytic activity.

A new tetraphenylporphyrin-tungstophosphoric acid hybrid was synthesized and physico-chemically characterized by different techniques. This hybrid, its molybdenum analogue, tungstophosphoric and molybdophosphoric acids as well as their Mn, Fe and Co salts were applied in Baeyer–Villiger oxidation of cyclohexanone to caprolactone with molecular oxygen. Due to the synergistic effect porphyrin-heteropolyacid hybrids exhibit similar catalytic activity as appropriate heteropoly salts and much higher activity than parent heteropolyacids.

New tetraphenylporphyrin-tangstophosphoric heteropolyacid hybrid was synthesized and applied as catalyst in oxidation of cyclohexanone to caprolactone showing synergistic effect.Figure optionsDownload as PowerPoint slide