Organic carbamates are esters of carbamic acid, R¹R²N–C(=O)–OR³, and carbamate synthesis is the set of reactions that construct this N–C(=O)–O triad. Common routes include addition of an alcohol to an isocyanate, acylation of an amine with a chloroformate or carbonyl imidazole, and three-component coupling of an amine, carbon dioxide, and an alkyl halide ^[1]. Direct catalytic conversion of CO₂, an amine, and an alcohol or alkylating agent to a carbamate, including zinc-catalyzed variants, incorporates CO₂ as the carbonyl source ^[2]. Selective reaction of primary amines with carbonyl-imidazole reagents can be directed toward carbamate rather than amide products by choice of the electrophilic partner ^[3]. The defining structural criterion is the carbamate functional group, which distinguishes the process from urea synthesis (N–C(=O)–N), carbonate synthesis (O–C(=O)–O), and amide synthesis (N–C(=O)–C). Stimulus-cleavable α-alkoxy carbamates illustrate that the same functional group can be assembled so that later fragmentation releases an alcohol, but the synthetic concept itself is formation of the carbamate, not its subsequent cleavage.