Synthesis of Cyclic Carbonates from Epoxides and CO2 under Mild Conditions Using a Simple, Highly Efficient Niobium‐Based Catalyst

Like a sore thumb: Niobium stands out among neighboring transition metals for its catalytic performance in the synthesis of cyclic carbonates. Readily available NbCl5 is a very efficient catalyst for the preparation of industrially relevant carbonates at ambient temperature, low CO2 pressure, and low concentrations. DMAP=N,N-dimethylaminopyridine.