Dimethylaluminium aldiminophenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides

Zhang, Wenjuan; Wang, Youhong; Sun, Wen Hua; Wang, Lin; Redshaw, Carl

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. © 2012 The Royal Society of Chemistry.

Citation

Zhang, W., Wang, Y., Sun, W. H., Wang, L., & Redshaw, C. (2012). Dimethylaluminium aldiminophenolates: Synthesis, characterization and ring-opening polymerization behavior towards lactides. Dalton Transactions : an international journal of inorganic chemistry, 41, 11587-11596. https://doi.org/10.1039/c2dt31215h

• Journal Article Type: Article
• Acceptance Date: Aug 7, 2012
• Online Publication Date: Aug 8, 2012
• Publication Date: Oct 14, 2012
• Deposit Date: Jun 8, 2022
• Journal: Dalton Transactions
• Print ISSN: 1477-9226
• Electronic ISSN: 1477-9234
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 41
• Pages: 11587-11596
• DOI: https://doi.org/10.1039/c2dt31215h
• Public URL: https://hull-repository.worktribe.com/output/3622167