Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers
Hyperbranched ethylene oligomers and polar functionalized co-oligomers synthesized via ethylene chain walking (co) oligomerization is a very attractive strategy. In this study, a series of dibenzhydryl iminopyridyl ligands with benzocycloalkyl and naphthyl moieties and the corresponding Ni(II) and P...
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Frontiers Media S.A.
2022-08-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2022.961426/full |
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| author | Beihang Ding Beihang Ding Guanru Chang Zhengpeng Yan Shengyu Dai Shengyu Dai |
| author_facet | Beihang Ding Beihang Ding Guanru Chang Zhengpeng Yan Shengyu Dai Shengyu Dai |
| author_sort | Beihang Ding |
| collection | DOAJ |
| description | Hyperbranched ethylene oligomers and polar functionalized co-oligomers synthesized via ethylene chain walking (co) oligomerization is a very attractive strategy. In this study, a series of dibenzhydryl iminopyridyl ligands with benzocycloalkyl and naphthyl moieties and the corresponding Ni(II) and Pd(II) complexes were synthesized and characterized. The Ni(II) complexes were highly effective in ethylene oligomerization and ethylene oligomers with hyperbranched microstructures were generated from this system. The corresponding Pd(II) complexes showed moderate oligomerization activities in ethylene oligomerization and hyperbranched ethylene oligomers were also yielded from the system. More significantly, the Pd(II) complexes can also effectively promote the co-oligomerization of ethylene with methyl acrylate (MA) to obtain hyperbranched polar functionalized ethylene-MA co-oligomers. The reaction temperature, catalyst ligand structure and metal type all have significant effects on ethylene (co) oligomerization with respect to catalytic activity, molecular weight and topology of the oligomers. |
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| id | doaj.art-19a210d669c54617b4e74a032f98eae9 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-13T10:56:14Z |
| publishDate | 2022-08-01 |
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| series | Frontiers in Chemistry |
| spelling | doaj.art-19a210d669c54617b4e74a032f98eae92022-12-22T02:49:31ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-08-011010.3389/fchem.2022.961426961426Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomersBeihang Ding0Beihang Ding1Guanru Chang2Zhengpeng Yan3Shengyu Dai4Shengyu Dai5Institute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, ChinaSchool of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, ChinaSchool of Chemistry and Chemical Engineering, Key Laboratory of Inorganic Functional Material, Huangshan University, Huangshan, ChinaInstitute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, ChinaInstitute of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, Hefei, ChinaSchool of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, ChinaHyperbranched ethylene oligomers and polar functionalized co-oligomers synthesized via ethylene chain walking (co) oligomerization is a very attractive strategy. In this study, a series of dibenzhydryl iminopyridyl ligands with benzocycloalkyl and naphthyl moieties and the corresponding Ni(II) and Pd(II) complexes were synthesized and characterized. The Ni(II) complexes were highly effective in ethylene oligomerization and ethylene oligomers with hyperbranched microstructures were generated from this system. The corresponding Pd(II) complexes showed moderate oligomerization activities in ethylene oligomerization and hyperbranched ethylene oligomers were also yielded from the system. More significantly, the Pd(II) complexes can also effectively promote the co-oligomerization of ethylene with methyl acrylate (MA) to obtain hyperbranched polar functionalized ethylene-MA co-oligomers. The reaction temperature, catalyst ligand structure and metal type all have significant effects on ethylene (co) oligomerization with respect to catalytic activity, molecular weight and topology of the oligomers.https://www.frontiersin.org/articles/10.3389/fchem.2022.961426/fullNi(II) and Pd(II) complexesethylene oligomerizationhyperbranchedbenzocycloalkylethylene-MA co-oligomers |
| spellingShingle | Beihang Ding Beihang Ding Guanru Chang Zhengpeng Yan Shengyu Dai Shengyu Dai Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers Frontiers in Chemistry Ni(II) and Pd(II) complexes ethylene oligomerization hyperbranched benzocycloalkyl ethylene-MA co-oligomers |
| title | Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers |
| title_full | Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers |
| title_fullStr | Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers |
| title_full_unstemmed | Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers |
| title_short | Ethylene (co) oligomerization using iminopyridyl Ni(II) and Pd(II) complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene-MA co-oligomers |
| title_sort | ethylene co oligomerization using iminopyridyl ni ii and pd ii complexes bearing benzocycloalkyl moieties to access hyperbranched ethylene oligomers and ethylene ma co oligomers |
| topic | Ni(II) and Pd(II) complexes ethylene oligomerization hyperbranched benzocycloalkyl ethylene-MA co-oligomers |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2022.961426/full |
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