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Issue 38, 2012
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Dimethylaluminium aldiminophenolates: synthesis, characterization and ring-opening polymerization behavior towards lactides

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Abstract

The stoichiometric reaction of the salicylaldimine derivatives (L1–L12) with trimethylaluminium afforded the corresponding dimethylaluminium aldiminophenolates (C1–C12), which were fully characterized by NMR spectroscopy and elemental analysis. The molecular structures of the representative complexes C1, C6, and C8 were determined by the single-crystal X-ray diffraction, which revealed distorted tetrahedral geometry at aluminium. Activation of the dimethylaluminium aldiminophenolates for the ring-opening polymerization required one equivalent of BnOH. On the basis of the polymerization results for L-lactide, D-lactide or rac-lactide, higher efficiency was observed for the ROP of D-lactide, and the nature of the ligands present significantly affected the observed catalytic activities and the properties of the resultant polylactides.

Graphical abstract: Dimethylaluminium aldiminophenolates: synthesis, characterization and ring-opening polymerization behavior towards lactides

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Publication details

The article was received on 06 Jun 2012, accepted on 07 Aug 2012 and first published on 08 Aug 2012


Article type: Paper
DOI: 10.1039/C2DT31215H
Citation: Dalton Trans., 2012,41, 11587-11596
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    Dimethylaluminium aldiminophenolates: synthesis, characterization and ring-opening polymerization behavior towards lactides

    W. Zhang, Y. Wang, W. Sun, L. Wang and C. Redshaw, Dalton Trans., 2012, 41, 11587
    DOI: 10.1039/C2DT31215H

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