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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...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2018
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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. |
format | Online Article Text |
id | pubmed-6244378 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT hiranoiyo copolymerizationofepoxideswithcyclicanhydridescatalyzedbydinuclearcobaltcomplexes AT nakanokoji copolymerizationofepoxideswithcyclicanhydridescatalyzedbydinuclearcobaltcomplexes |