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Vanadium(V) phenolate complexes for ring opening homo- and co-polymerisation of [epsilon]-caprolactone, L-lactide and rac-lactide
journal contribution
posted on 2016-01-25, 13:28 authored by Feijie Ge, Yi Dan, Yahya Al-Khafaji, Timothy J. Prior, Long Jiang, Mark ElsegoodMark Elsegood, Carl RedshawThe vanadyl complexes [VO(OtBu)L1] (1) and {[VO(OiPr)]2(m-p-L2p)} (2) {[VO(OR)]2(m-p-L2m)} (R ¼ iPr 3, tBu 4) have been prepared from [VO(OR)3] (R ¼ nPr, iPr or tBu) and the respective phenol, namely 2,20-
ethylidenebis(4,6-di-tert-butylphenol) (L1H2) or a,a,a 0 ,a 0-tetra(3,5-di-tert-butyl-2-hydroxyphenyl–p/m-) xylene-para-tetraphenol (L2p/mH4). For comparative studies, the known complexes [VO(m-OnPr)L1]2 (I), [VOL3]2 (II) (L3 H3 ¼ 2,6-bis(3,5-di-tert-butyl-2-hydroxybenzyl)-4-tert-butylphenol) were prepared. An imido complex {[VCl(Np-tolyl)(NCMe)]2(m-p-L2p)} (5) has been prepared following work-up from
[V(Np-tolyl)Cl3], L2pH4 and Et3N. The molecular structures of complexes 1–5 are reported. Complexes 1–5 and I and II have been screened for their ability to ring open polymerise 3-caprolactone, L-lactide or
rac-lactide with and without solvent present. The co-polymerization of 3-caprolactone with L-lactide or rac-lactide afforded co-polymers with low lactide content; the reverse addition was ineffective.
History
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- Science
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- Chemistry
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RSC Adv.Citation
GE, F. ...et al., 2015. Vanadium(V) phenolate complexes for ring opening homo- and co-polymerisation of [epsilon]-caprolactone, L-lactide and rac-lactide. RSC Advances, 6, pp. 4792-4802.Publisher
© The Authors. Published by the Royal Society of Chemistry.Version
- VoR (Version of Record)
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This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Publication date
2015Notes
This is an Open Access Article. It is published by Royal Society of Chemistry under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/eISSN
2046-2069Publisher version
Language
- en