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Issue 27, 2015
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Magnesium amino-bis(phenolato) complexes for the ring-opening polymerization of rac-lactide

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Abstract

Magnesium compounds of tetradentate amino-bis(phenolato) ligands, Mg[L1] (1) and Mg[L2] (2) (where [L1] = 2-pyridyl-N,N-bis(2-methylene-4-methoxy-6-tert-butylphenolato), and [L2] = dimethylaminoethylamino-N,N-bis(2-methylene-4-methyl-6-tert-butylphenolato)) were prepared. The proligands, H2[L1] and H2[L2] were reacted with di(n-butyl)magnesium in toluene to give the desired compounds in high yields. Compounds 1 and 2 exhibit dimeric structures in solutions of non-coordinating solvents as observed by NMR spectroscopy and in the solid state as shown by the single crystal X-ray structure of 2. These compounds exhibit good activity for rac-lactide polymerization in solution and in molten lactide.

Graphical abstract: Magnesium amino-bis(phenolato) complexes for the ring-opening polymerization of rac-lactide

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Supplementary files

Article information


Submitted
18 Jan 2015
Accepted
17 Mar 2015
First published
17 Mar 2015

This article is Open Access

Dalton Trans., 2015,44, 12365-12375
Article type
Paper
Author version available

Magnesium amino-bis(phenolato) complexes for the ring-opening polymerization of rac-lactide

K. Devaine-Pressing, J. H. Lehr, M. E. Pratt, L. N. Dawe, A. A. Sarjeant and C. M. Kozak, Dalton Trans., 2015, 44, 12365
DOI: 10.1039/C5DT00236B

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