Aluminum complexes supported by ketoiminates bearing electron-donating groups were prepared through reaction with tris-(2,6-dimethylphenoxy) aluminum under an inert atmosphere at room temperature. The water-sensitive complexes were isolated by filtration in moderate yields and dried in vacuo. The complexes were characterized with 1H and 13C NMR and absorbance spectroscopy, and x-ray crystallography. The aluminum complexes included a tridentate ketoiminate with a pendant quinolyl moiety and two phenoxides. The complexes were assessed for their ring opening polymerization activity with ϵ-caprolactone and were shown to be highly efficient in producing poly-caprolactone at elevated temperature.

Synthesis and characterization of five-coordinate aluminum complexes that polymerize ε-caprolactone

249th National Meeting (2015)

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