A carbonate ester
is a functional group
in organic chemistry
consisting of a carbonyl
group flanked by two alkoxy
groups. The general structure of these carbonates is R1
and they are related to esters
O(C=O)R and ethers
and also to the inorganic carbonates
Carbonate esters are used as protecting group for diols. A classic reagent is phosgene but more user friendly reagents exist such as carbonyl diimidazole. Ethylene carbonate and ¨propylene carbonate are used as a solvent. Dimethyl carbonate is used as a methylating reagent.
In many applications a carbonate group replaces an ester group for example in Cholesteryl oleyl carbonate. Polycarbonates are an important class of polymers.
Laboratory methods for the synthesis of carbonate ester in the laboratory are: