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

Molecules

Chi-Tien Chen¹  Min-Chian Wang²  Tzu-Lun Huang² 

[1] Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan;

关键词: coumarin-derived ligands;    anilido-aldimine;    zinc complexes;    ring opening polymerization;    l-lactide;   

DOI  :  10.3390/molecules20045313

来源: mdpi

【 摘 要 】

The coumarin-derived ligand precursors L¹H–L⁶H have been prepared. Treatment of these ligand precursors with 1.2 equiv. of ZnEt₂ in toluene affords zinc ethyl complexes (LZnEt) 1–6 (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 1–7 towards the ring opening polymerization of l-lactide in the presence of 9-AnOH have been investigated.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.