A soluble ferrate salt was synthetized by treating a novel protonated pyridine-containing macrocyclic ligand with iron(III) bromide. Its good activity as a stand-alone catalyst in CO2 cycloaddition reactions to epoxides was assessed. Good yields of cyclic organic carbonates were obtained, especially with terminal epoxides, under solvent-free reaction conditions (T = 100 °C, P (CO2) = 0.8 MPa), without the need of any Lewis base as the co-catalyst. This system proved to be active and selective towards the cyclic carbonates formation, with a broad reaction scope. A scale-up reaction on 2.5 mL of propylene oxide was performed and the robustness of the catalyst was proved up to three recycles (TON = 1020).

Unexpected "ferrate" species as single-component catalyst for the cycloaddition of CO2 to epoxides / N. Panza, A. Di Biase, E. Gallo, A. Caselli. - In: JOURNAL OF CO2 UTILIZATION. - ISSN 2212-9820. - 51(2021 Sep), pp. 101635.1-101635.5. [10.1016/j.jcou.2021.101635]

Unexpected "ferrate" species as single-component catalyst for the cycloaddition of CO2 to epoxides

N. Panza
Primo
;
A. DI BIASE
Secondo
;
E. Gallo
Penultimo
;
A. Caselli
Ultimo
2021

Abstract

A soluble ferrate salt was synthetized by treating a novel protonated pyridine-containing macrocyclic ligand with iron(III) bromide. Its good activity as a stand-alone catalyst in CO2 cycloaddition reactions to epoxides was assessed. Good yields of cyclic organic carbonates were obtained, especially with terminal epoxides, under solvent-free reaction conditions (T = 100 °C, P (CO2) = 0.8 MPa), without the need of any Lewis base as the co-catalyst. This system proved to be active and selective towards the cyclic carbonates formation, with a broad reaction scope. A scale-up reaction on 2.5 mL of propylene oxide was performed and the robustness of the catalyst was proved up to three recycles (TON = 1020).
Iron; Chemical utilization of CO2; Cyclic carbonates; Homogeneous catalysis; Pyridine containing macrocyclic ligands;
Settore CHIM/03 - Chimica Generale e Inorganica
lug-2021
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/855114
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