Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters
Chromium and aluminum complexes bearing salalen ligands were explored as catalysts for the ring-opening copolymerization (ROCOP) of succinic (SA), maleic (MA), and phthalic (PA) anhydrides with several epoxides: cyclohexene oxide (CHO), propylene oxide (PO), and limonene oxide (LO). Their behavior w...
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MDPI AG
2023-06-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/24/12/10052 |
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| author | Federica Santulli Ilaria Grimaldi Daniela Pappalardo Marina Lamberti Mina Mazzeo |
| author_facet | Federica Santulli Ilaria Grimaldi Daniela Pappalardo Marina Lamberti Mina Mazzeo |
| author_sort | Federica Santulli |
| collection | DOAJ |
| description | Chromium and aluminum complexes bearing salalen ligands were explored as catalysts for the ring-opening copolymerization (ROCOP) of succinic (SA), maleic (MA), and phthalic (PA) anhydrides with several epoxides: cyclohexene oxide (CHO), propylene oxide (PO), and limonene oxide (LO). Their behavior was compared with that of traditional salen chromium complexes. A completely alternating enchainment of monomers to provide pure polyesters was achieved with all the catalysts when used in combination with 4-(dimethylamino)pyridine (DMAP) as the cocatalyst. Poly(propylene maleate-<i>block</i>-polyglycolide), a diblock polyester with a precise composition, was obtained by switch catalysis, in which the same catalyst was able to combine the ROCOP of propylene oxide and maleic anhydride with the ring-opening polymerization (ROP) of glycolide (GA) through a one-pot procedure, starting from an initial mixture of the three different monomers. |
| first_indexed | 2024-03-11T02:21:17Z |
| format | Article |
| id | doaj.art-50a28e6d091f428dac92ea6dd05c4fd8 |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-11T02:21:17Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-50a28e6d091f428dac92ea6dd05c4fd82023-11-18T10:47:55ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-06-0124121005210.3390/ijms241210052Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of PolyestersFederica Santulli0Ilaria Grimaldi1Daniela Pappalardo2Marina Lamberti3Mina Mazzeo4Department of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyDepartment of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyDipartimento di Scienze e Tecnologie, Università del Sannio, Via de Sanctis snc, 82100 Benevento, ItalyDepartment of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyDepartment of Chemistry and Biology “A. Zambelli”, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, ItalyChromium and aluminum complexes bearing salalen ligands were explored as catalysts for the ring-opening copolymerization (ROCOP) of succinic (SA), maleic (MA), and phthalic (PA) anhydrides with several epoxides: cyclohexene oxide (CHO), propylene oxide (PO), and limonene oxide (LO). Their behavior was compared with that of traditional salen chromium complexes. A completely alternating enchainment of monomers to provide pure polyesters was achieved with all the catalysts when used in combination with 4-(dimethylamino)pyridine (DMAP) as the cocatalyst. Poly(propylene maleate-<i>block</i>-polyglycolide), a diblock polyester with a precise composition, was obtained by switch catalysis, in which the same catalyst was able to combine the ROCOP of propylene oxide and maleic anhydride with the ring-opening polymerization (ROP) of glycolide (GA) through a one-pot procedure, starting from an initial mixture of the three different monomers.https://www.mdpi.com/1422-0067/24/12/10052aluminum catalystsblock copolymerschromium(III) catalystspolyestersring opening copolymerizationswitch catalysis |
| spellingShingle | Federica Santulli Ilaria Grimaldi Daniela Pappalardo Marina Lamberti Mina Mazzeo Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters International Journal of Molecular Sciences aluminum catalysts block copolymers chromium(III) catalysts polyesters ring opening copolymerization switch catalysis |
| title | Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters |
| title_full | Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters |
| title_fullStr | Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters |
| title_full_unstemmed | Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters |
| title_short | Salen-like Chromium and Aluminum Complexes as Catalysts in the Copolymerization of Epoxides with Cyclic Anhydrides for the Synthesis of Polyesters |
| title_sort | salen like chromium and aluminum complexes as catalysts in the copolymerization of epoxides with cyclic anhydrides for the synthesis of polyesters |
| topic | aluminum catalysts block copolymers chromium(III) catalysts polyesters ring opening copolymerization switch catalysis |
| url | https://www.mdpi.com/1422-0067/24/12/10052 |
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