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Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes

The alternating copolymerization of epoxides with cyclic anhydrides (CAs) is a highly diverse synthetic method for polyesters as the polymers’ architectures and properties can be easily controlled depending on the combination of two monomers. Thus, a variety of catalyst designs has been reported to...

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Autores principales: Hiranoi, Yo, Nakano, Koji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6244378/
https://www.ncbi.nlm.nih.gov/pubmed/30498527
http://dx.doi.org/10.3762/bjoc.14.255
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author Hiranoi, Yo
Nakano, Koji
author_facet Hiranoi, Yo
Nakano, Koji
author_sort Hiranoi, Yo
collection PubMed
description The alternating copolymerization of epoxides with cyclic anhydrides (CAs) is a highly diverse synthetic method for polyesters as the polymers’ architectures and properties can be easily controlled depending on the combination of two monomers. Thus, a variety of catalyst designs has been reported to prepare the desired copolymers efficiently. We herein report dinuclear cobalt–salen complexes with a benzene ring as a linker and their activities in copolymerization reactions. The dinuclear cobalt complexes showed a higher catalytic activity for the copolymerization of propylene oxide with phthalic anhydride than the corresponding mononuclear cobalt–salen complex and achieved one of the highest turnover frequencies ever reported. A variety of epoxides and CAs were also found to be copolymerized successfully by the dinuclear cobalt complex with a high catalytic activity.
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spelling pubmed-62443782018-11-29 Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes Hiranoi, Yo Nakano, Koji Beilstein J Org Chem Full Research Paper The alternating copolymerization of epoxides with cyclic anhydrides (CAs) is a highly diverse synthetic method for polyesters as the polymers’ architectures and properties can be easily controlled depending on the combination of two monomers. Thus, a variety of catalyst designs has been reported to prepare the desired copolymers efficiently. We herein report dinuclear cobalt–salen complexes with a benzene ring as a linker and their activities in copolymerization reactions. The dinuclear cobalt complexes showed a higher catalytic activity for the copolymerization of propylene oxide with phthalic anhydride than the corresponding mononuclear cobalt–salen complex and achieved one of the highest turnover frequencies ever reported. A variety of epoxides and CAs were also found to be copolymerized successfully by the dinuclear cobalt complex with a high catalytic activity. Beilstein-Institut 2018-11-05 /pmc/articles/PMC6244378/ /pubmed/30498527 http://dx.doi.org/10.3762/bjoc.14.255 Text en Copyright © 2018, Hiranoi and Nakano https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjoc/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Organic Chemistry terms and conditions: (https://www.beilstein-journals.org/bjoc/terms)
spellingShingle Full Research Paper
Hiranoi, Yo
Nakano, Koji
Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title_full Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title_fullStr Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title_full_unstemmed Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title_short Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
title_sort copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6244378/
https://www.ncbi.nlm.nih.gov/pubmed/30498527
http://dx.doi.org/10.3762/bjoc.14.255
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