Selective End-Functionalization

Functional diethyl aluminum alkoxides have been prepared by reaction of AlEt3 with an equimolar amount of the corresponding alcohol (XCH2OH). The 

Polymerization of e-CL and (L- or D,L-)LA is perfectly living when initiated with any of the aforementioned functional aluminum alkoxides in toluene at 25 and 70 °C, respectively. This is supported by the close agreement between the mean degree of polymerization (DP) at total monomer conversion and the mon-omer-to-initiator molar ratio, the narrow molecular weight distributions (PDI= 

A more general strategy to approach symmetrical telechelic polyesters consists of the control of both initiation and termination steps. Indeed, combination of a functional initiator for the (di)lactones ROP with an effective coupling 

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Barakat, I., Dubois, P., Jerome, R., and Teyssie, P., 1991, Living Polymerization and Selective End Functionalization of e-Caprolactone using Zinc Alkoxides as Initiators. Macromolecules 24 6542... 

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