| 초록 |
Urea derivatives are useful chemical intermediates in the synthesis of pharmaceuticals, agricultural chemicals and dyes; and they were also used as antioxidants in gasoline and additives in plastics. Conventional preparative methodologies of urea derivatives are based on the used of dangerous reagents such as phosgene and isocyanates. Replacement of these hazardous reagents in chemical processes is one of the main goals in green chemistry. Therefore, the synthesis of ureas starting from CO2 has drawn much attention because CO2 is a renewable, abundant, cheap, and nontoxic source of functional carbon unit. We report synthesis of urea compounds starting from cyclic carbonates which are derived from CO2 and epoxide. Various Structural modification was attempted to study its outcomes. |
