Mixtures of Heterocycles and Iodine as the Catalysts for the Formation of Organic Carbonates from Epoxides and CO2

Abstract

Combinations of a series of nitrogen-containing heterocycles with iodine were tested as the catalysts for the synthesis of cyclic carbonates from epoxides and CO2. It is shown that the systems containing aliphatic substituents are more efficient, the presence of a free NH group has a beneficial effect on the conversion, and the systems with two or more nitrogen atoms are more active.