The heterocyclic skeletons obtained have been investigated extensively for the developments of various pharmaceuticals and pesticides. We also explored the scopes of these reactions by replacing the nitrogen nucleophiles with oxygen nucleophiles (phenols and alcohols, Figure ). The process for the N-methyl aniline was applied to the phenols, and for all their cases, the carbonates 8a-d were obtained in quantitative yields. In addition, the desired carbonates were obtained using the fluorine-substituted alcohols as the substrates, although their yields were slightly lower. Diols such as the ethylene glycol, propylene glycol, and catechol derivatives also afforded their corresponding cyclic carbonates (9a,b, and 10) at high yields. Different types of carbonates, including diaryl, dialkyl, and cyclic carbonates, are essential in industry and are employed in a broad range of applications such as their employments as the starting materials for resin (polycarbonates and polyurethanes) manufacturing, and have recently attracted considerable attention as sustainable process feedstocks. Figure To investigate the reaction mechanism of the generation of COCl2 from chloroform by our method, we conducted a control experiment shown in Scheme 2. Ethylene glycol, which reacts with COCl2 at a 1:1 ratio, was employed as the substrate and reacted with ClO2 • (0.5 equiv.) to afford a cyclic carbonate with a 61% yield. This result indicates that an equivalent amount of ClO2 • is not required for COCl2 formation.