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Efficient Catalysts of Acyclic Guanidinium Iodide for the Synthesis of Cyclic Carbonates from Carbon Dioxide and Epoxides under Mild Conditions

Naoto Aoyagi, Yoshio Furusho, Takeshi Endo*

*Molecular Engineering Institute, Kindai University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Email:

N. Aoyagi, Y. Furusho, T. Endo, Synthesis, 2020, 52, 150-158.

DOI: 10.1055/s-0037-1610735

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Acyclic guanidinium salts catalyze the formation of five-membered cyclic carbonates in good yields through cycloaddition of CO2 to epoxides at nearly ambient temperatures and pressures. To achieve good catalytic activity of the guanidinium salt, it is essential to have active hydrogens on the cation moiety as well as an iodide ion as the anion moiety.

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Key Words

CO2, guanidinium iodide, organocatalysis, active hydrogen, dioxolanones, epoxides

ID: J66-Y2020