The Al(iii)-based polydentate chelate complex catalyzed cycloaddition of carbon dioxide and epoxides: synthetic optimization and mechanistic study

Aimed at greenhouse gas CO 2 high value-added utilization, a N , N ′-(propane-1,3-diyl)dipicolinamide (PPPA) supported Al( iii ) metal–organic polydentate chelate complex (Al-PPPA) was designed and used to efficiently catalyze CO 2 to cyclic carbonates.