Exchange Activity Immortal Polymerization

The activity of aluminum porphyrins for axial ligand exchange is not only of fundamental interest but is also 

Enolate-aluminum poiphyrins (32 ), prepared by the polymerization of methacrylic esters (21) with la, also show no sign of ligand exchange, whereas alcoholate, phenolate, and carboxylate complexes undergo rapid exchange of the axial ligands.  

As described previously, aluminum porphyrins with axial bound alkyl and etiolate ligands (32 ), in contrast with 

A typical example is given by the polymerization of 1,2-epoxypropane (11, R = Me) initiated with Ic in the presence of alcohol as a chain-transfer agent. In this case, the exchange between the growing alcoholate species (51) and 

By selecting appropriate transfer agents, immortal polymerizations can be applied to controlled synthesis of polyesters from lactones (13-15) and lactide (Ifi). - A thiolate complex of zinc IV-substituted poiphyrin (5g) leads to an immortal polymerization of epoxides (11)  

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