Ti(IV)–Tris(phenolate) Catalyst Systems for the Ring-Opening Copolymerization of Cyclohexene Oxide and Carbon Dioxide

11 February 2020


Sumesh K. Raman, Arron C. Deacy, Leticia Pena Carrodeguas, Natalia V. Reis, Ryan W. F. Kerr, Andreas Phanopoulos, Sebastian Morton, Matthew G. Davidson, Charlotte K. Williams https://doi.org/10.1021/acs.organomet.9b00845

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The copolymerization of carbon dioxide (CO2) and epoxides is an attractive means to valorize an abundant, renewable feedstock and to produce useful polymers with reduced greenhouse gas emissions. Coupling reactions between CO2 and epoxides yield cyclic carbonates as the thermodynamic products, but with a suitable catalyst the kinetic polycarbonate product may also be accessible. Catalyst selection, therefore, is critical to governing reaction selectivity and rates, as well as providing a means to control polymer properties such as molar mass and dispersity.