Copolymerization of CO2 and oxiranes using high-pressure autoclaves typically allows one experiment per reactor per day. As a high-throughput approach for this chemistry would be extremely valuable, a parallel setup has been validated for the copolymerization of CO2 and cyclohexene oxide (CHO) with two beta-diiminato zinc complexes. Molecular weights, polydispersities and activities were found to be comparable with literature values.