“…During the past few years, great efforts have been made to explore environmentally benign routes that employ other carbonyl sources, including 1,1,1‐trichloromethyl formate (diphosgene), trichloroacetyl chloride, 1,1‐carbonyldiimidazole (CDI), carbonate esters, N ‐acylbenzotriazoles, isocyanates or cyanate salts, isocyanides, dialkylazodicarboxylate, azides, amides, CO 2 , and CO, instead of COCl 2 for carbamate production. Despite the development of carbonyl sources, these processes utilize strong bases, toxic metal‐based catalysts, expensive ligands, multistep procedures, and harsh reaction conditions.…”