Figure 1.

Comparison of a first‐order kinetic fit and the kinetic model represented in Equation (2) for the conversion of epoxide 1 a with CO₂ in the presence of catalyst 3 and 8. The observed selectivity was >99 %. Reaction conditions: 1,2‐butylene oxide (1 a, 460 mmol), 2 mol % catalyst 3 or 8, p(CO₂)=1.0 MPa, 45 °C, 48 h.