N-containing compounds such as isocyanates, carbamates, and N,N'-disubstituted urea derivatives are important chemicals. For example, the world production of isocyanates exceeded 5 megatons in 2001. Currently, these chemicals are mainly manufactured by the phosgenation of amines . The worldwide production of phosgene ranges from 6-8 megatons per year, which have been used mainly (> 85 %) for the synthesis of isocyanates and their derivatives. Therefore, as a first step, the use of an alternative to phosgene in the synthesis of isocyanates should be found to help eliminate the use of phosgene altogether. [1][2] Many strategies for nonphosgene routes, including reductive carbonylation [3] and oxidative carbonylation [4] by using CO as carbonyl source, and the use of Pd, [5] Ru, [6] Rh, [7] Fe, [8] Ni, [9] Co, [10] Mn, [11] Se, [12] Au, [13] and W [14] catalysts, have been extensively studied. The progress in this field of research, however, is relatively slow. Carbon monoxide is also poisonous and the mixing of CO and O 2 for oxidative carbonylation is potentially explosive. As an alternative, the use of dimethyl carbonate or dimethyl sulfate as phosgene substitutes are relatively expensive for commercial applications. [15] Therefore, the most desirable option to avoid phosgene is to replace it with CO 2 directly. Besides the abundance of CO 2 and its environmentally benign nature, a process that uses CO 2 has the benefit of recycling carbon from the atmosphere when its use is linked with other processes that emit CO 2 . The detrimental influence of CO 2 as a "green house" gas has