Versatile Use of Carbon Dioxide in Synthesis of Organic Carbamates

Organic carbamates classically have been synthesized starting from amines using harmful and toxic reagents, like phosgene or its derivatives, and carbon monoxide. Recently, carbon dioxide was used as a cheap and harmless reagent for the synthesis of organic carbamates in the gaseous or supercritical state, or in an electrochemical process as an alternative to the harmful and toxic reagents. The present review will deal with the extensive use of carbon dioxide in the synthesis of organic carbamates.