Fig. 1: State of the art and current challenges.

a Current state for the catalytic (cat.) synthesis of five- (5MCCs), six- (6MCCs) and seven-membered cyclic carbonates (7MCCs) from CO2. b Selected bioactive compounds with a single (left) and bicyclic oxazolidinone core (right). c Catalytic strategy towards 7MCCs and their application towards bicyclic pharmacores. Cat stands for catalyst.