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Ring-Opening Polymerization of rac-Lactide with Aluminum Chiral Anilido-Oxazolinate Complexes.

ABSTRACT: A series of dimethylaluminum complexes (L^1a-i )AlMe₂ (2a-i, where HL^1a-i = 2-(2'-ArNH)phenyl-4-R₁-oxazoline) bearing chiral, bidentate anilido-oxazolinate ligands have been prepared and characterized. Six of the complexes, in the presence of an alcohol cocatalyst, are shown to be active initiators for the stereoselective ring-opening polymerization of rac-lactide in toluene solution and under bulk conditions, yielding polylactides with a range of tacticity from slightly isotactic to moderately heterotactic. The reactivity and selectivity of these catalysts are discussed on the basis of the effect of their substituents.

SUBMITTER: Bian S

PROVIDER: S-EPMC4036730 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature

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Ring-Opening Polymerization of rac-Lactide with Aluminum Chiral Anilido-Oxazolinate Complexes.

Bian Shi S Abbina Srinivas S Lu Zhengliang Z Kolodka Edward E Du Guodong G

Organometallics 20140509 10

A series of dimethylaluminum complexes (L1a-i )AlMe2 (2a-i, where HL1a-i = 2-(2'-ArNH)phenyl-4-R1-oxazoline) bearing chiral, bidentate anilido-oxazolinate ligands have been prepared and characterized. Six of the complexes, in the presence of an alcohol cocatalyst, are shown to be active initiators for the stereoselective ring-opening polymerization of rac-lactide in toluene solution and und ...[more]

PMID: 24891754

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