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Organoaluminium complexes of ortho-, meta-, para-anisidines: synthesis, structural studies and ROP of ε-caprolactone (and rac-lactide)

Zhao, K.-Q.; Li, Y.; Sun, X.; Mo, S.; Elsegood, Mark R. J.; Li, Yuanzhuo; Zhao, Ke-Qing; Elsegood, Mark R J; Prior, Timothy J.; Sun, Xinsen; Mo, Shanyan; Redshaw, Carl; Zhao, Ke Qing

Authors

K.-Q. Zhao

Y. Li

X. Sun

S. Mo

Mark R. J. Elsegood

Yuanzhuo Li

Ke-Qing Zhao

Mark R J Elsegood

Xinsen Sun

Shanyan Mo

Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry

Ke Qing Zhao

Abstract

Reaction of Me₃Al (two equivalents) with ortho-, meta- or para-anisidine, (OMe)(NH₂)C₆H₄, affords the complexes {[1,2-(OMe),NC₆H₄(μ-Me₂Al)](μ-Me₂Al)}₂ (1), [1,3-(Me₃AlOMe),NHC₆H₄(μ-Me₂Al)]2 (2) or [1,4-(Me₃AlOMe),NHC₆H₄(μ-Me₂Al)]₂ (3), respectively. The molecular structures of 1–3 have been determined and all three complexes were found to be highly active for the ring opening polymerization (ROP) of ε-caprolactone. 1 was found highly active either with or without benzyl alcohol present; at various temperatures, the activity order 1 > 2 ≈ 3 was observed. For the ROP of rac-lactide results for 1–3 were poor.

Journal Article Type Article
Publication Date 2014-09
Journal Catalysis science & technology
Print ISSN 2044-4753
Electronic ISSN 2044-4761
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 4
Issue 9
Pages 3025-3031
Institution Citation Li, Y., Zhao, K., Elsegood, M. R. J., Prior, T. J., Sun, X., Mo, S., & Redshaw, C. (2014). Organoaluminium complexes of ortho-, meta-, para-anisidines: synthesis, structural studies and ROP of ε-caprolactone (and rac-lactide). Catalysis science & technology, 4(9), 3025-3031. https://doi.org/10.1039/c4cy00624k
DOI https://doi.org/10.1039/c4cy00624k
Keywords Ring opening polymerization , Catalytic activity, ε-caprolactone, Organoaluminium complexes
Publisher URL http://pubs.rsc.org/en/Content/ArticleLanding/2014/CY/C4CY00624K#!divAbstract
Copyright Statement ©2015 University of Hull
Additional Information Author's accepted manuscript of article published in: Catalysis science & technology, 2014, v.4, issue 9.

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