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Issue 31, 2013
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Well-controlled ring-opening polymerization of cyclic esters initiated by dialkylaluminum β-diketiminates

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Abstract

A series of aluminum alkyl complexes nacnacRAlMe2 (2a–2h) bearing aliphatic N-substituted β-diketiminate ligands (nacnacRH = N,N′-dialkyl-2-amino-4-iminopent-2-enes), were prepared from the reaction of trialkyl aluminum and the corresponding β-diketimines. All these aluminum complexes were characterized by NMR, elemental analysis and HRMS spectroscopy. The molecular structures of complexes 2a, 2c and 2h were confirmed by single-crystal X-ray diffraction. These aluminum alkyl complexes show notable activity towards the ring-opening polymerization of ε-caprolactone in the absence and presence of alcohol, and the resulting polymers have narrow molecular weight distributions.

Graphical abstract: Well-controlled ring-opening polymerization of cyclic esters initiated by dialkylaluminum β-diketiminates

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Publication details

The article was received on 06 Feb 2013, accepted on 29 May 2013 and first published on 30 May 2013


Article type: Paper
DOI: 10.1039/C3DT50372K
Citation: Dalton Trans., 2013,42, 11295-11303
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    Well-controlled ring-opening polymerization of cyclic esters initiated by dialkylaluminum β-diketiminates

    D. Li, Y. Peng, C. Geng, K. Liu and D. Kong, Dalton Trans., 2013, 42, 11295
    DOI: 10.1039/C3DT50372K

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