A metal–metalloporphyrin framework based on an octatopic porphyrin ligand for chemical fixation of CO₂ with aziridines

A new porous metal–metalloporphyrin framework, MMPF-10, has been constructed from an octatopic porphyrin ligand, which links copper paddlewheel units to form a framework with fmj topology. In situ metallation of the porphyrin ligands provides MMPF-10 with two unique accessible Cu(II) centers. This allows it to behave as an efficient Lewis acid catalyst in the first reported reaction of CO₂ with aziridines to synthesize oxazolidinones catalyzed by an MMPF.