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Molecules 2015, 20(4), 5313-5328; doi:10.3390/molecules20045313

Zinc Complexes Containing Coumarin-Derived Anilido-Aldimine Ligands as Catalysts for Ring Opening Polymerization of L-Lactide

Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Atsushi Sudo
Received: 12 February 2015 / Revised: 13 March 2015 / Accepted: 20 March 2015 / Published: 24 March 2015
(This article belongs to the Special Issue Ring-Opening Polymerization)
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Abstract

The coumarin-derived ligand precursors L1HL6H have been prepared. Treatment of these ligand precursors with 1.2 equiv. of ZnEt2 in toluene affords zinc ethyl complexes (LZnEt) 16 (where L = coumarin-derived ligands bearing different functional groups). Reaction of ligand precursor L3H with 1.5 equiv. of Zn[N(SiMe3)2]2 in toluene affords the zinc amide complex, L3ZnN(SiMe3)2, 7. All these compounds were characterized by NMR spectroscopy and elemental analysis. The molecular structures are reported for 1 and 7. The catalytic activities of complexes 17 towards the ring opening polymerization of l-lactide in the presence of 9-AnOH have been investigated. View Full-Text
Keywords: coumarin-derived ligands; anilido-aldimine; zinc complexes; ring opening polymerization; l-lactide coumarin-derived ligands; anilido-aldimine; zinc complexes; ring opening polymerization; l-lactide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, C.-T.; Wang, M.-C.; Huang, T.-L. Zinc Complexes Containing Coumarin-Derived Anilido-Aldimine Ligands as Catalysts for Ring Opening Polymerization of L-Lactide. Molecules 2015, 20, 5313-5328.

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