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Yu B, Xu X, Huang ZN, Tao K, Sun HL, Yang QZ, Wang W. Iron–Aryloxide Complex Bearing Bis(dipyrromethene) Ligands for the Ring-Opening Polymerization of ε-Caprolactone. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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N-alkyl-β-ketoiminate zinc complexes: Synthesis, structure, and reactivity in ring-opening polymerization of lactide. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2022.121253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hashmi OH, Capet F, Visseaux M, Champouret Y. Homoleptic and Heteroleptic Substituted Amidomethylpyridine Iron Complexes: Synthesis, Structure and Polymerization of rac‐Lactide. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Obaid H. Hashmi
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Frederic Capet
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Marc Visseaux
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
| | - Yohan Champouret
- Universite de Lille Faculte des Sciences et Technologies UMR 8181 Campus Scientifique 59655 Villeneuve d'Ascq FRANCE
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Syntheses, structures and catalysis of tetranuclear zinc N-alkoxide ketoiminate complexes for ring-opening polymerization of rac-lactide. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Champouret Y, Hashmi OH, Visseaux M. Discrete iron-based complexes: Applications in homogeneous coordination-insertion polymerization catalysis. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.03.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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6
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Naolou T, Lendlein A, Neffe AT. Amides as Non-polymerizable Catalytic Adjuncts Enable the Ring-Opening Polymerization of Lactide With Ferrous Acetate Under Mild Conditions. Front Chem 2019; 7:346. [PMID: 31165060 PMCID: PMC6535497 DOI: 10.3389/fchem.2019.00346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/26/2019] [Indexed: 11/13/2022] Open
Abstract
Sn-based catalysts are effective in the ring-opening polymerization (ROP) but are toxic. Fe(OAc)2 used as an alternative catalyst is suitable for the ROP of lactide only at higher temperatures (>170°C), associated with racemization. In the ROP of ester and amide group containing morpholinediones with Fe(OAc)2 to polydepsipeptides at 135°C, ester bonds were selectively opened. Here, it was hypothesized that ROP of lactones is possible with Fe(OAc)2 when amides are present in the reactions mixture as Fe-ligands could increase the solubility and activity of the metal catalytic center. The ROP of lactide in the melt with Fe(OAc)2 is possible at temperatures as low as 105°C, in the presence of N-ethylacetamide or N-methylbenzamide as non-polymerizable catalytic adjuncts (NPCA), with high conversion (up to 99 mol%) and yield (up to 88 mol%). Polydispersities of polylactide decreased with decreasing reaction temperature to ≤ 1.1. NMR as well as polarimetric studies showed that no racemization occurred at reaction temperatures ≤145°C. A kinetic study demonstrated a living chain-growth mechanism. MALDI analysis revealed that no side reactions (e.g., cyclization) occurred, though transesterification took place.
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Affiliation(s)
- Toufik Naolou
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
| | - Axel T Neffe
- Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
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Dou J, Zhu D, Zhang W, Wang R, Wang S, Zhang Q, Zhang X, Sun WH. Highly efficient iron(II) catalysts toward ring opening polymerization of ε-caprolactone through in situ initiation. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Ortuño MA, Dereli B, Chiaie KRD, Biernesser AB, Qi M, Byers JA, Cramer CJ. The Role of Alkoxide Initiator, Spin State, and Oxidation State in Ring-Opening Polymerization of ε-Caprolactone Catalyzed by Iron Bis(imino)pyridine Complexes. Inorg Chem 2018; 57:2064-2071. [PMID: 29381341 DOI: 10.1021/acs.inorgchem.7b02964] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Density functional theory (DFT) is employed to characterize in detail the mechanism for the ring-opening polymerization (ROP) of ε-caprolactone catalyzed by iron alkoxide complexes bearing redox-active bis(imino)pyridine ligands. The combination of iron with the non-innocent bis(imino)pyridine ligand permits comparison of catalytic activity as a function of oxidation state (and overall spin state). The reactivities of aryl oxide versus alkoxide initiators for the ROP of ε-caprolactone are also examined. An experimental test of a computational prediction reveals an Fe(III) bis(imino)pyridine bis-neopentoxide complex to be competent for ROP of ε-caprolactone.
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Affiliation(s)
- Manuel A Ortuño
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Büsra Dereli
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Kayla R Delle Chiaie
- Eugene F. Merkert Chemistry Center, Department of Chemistry, Boston College , 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Ashley B Biernesser
- Eugene F. Merkert Chemistry Center, Department of Chemistry, Boston College , 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Miao Qi
- Eugene F. Merkert Chemistry Center, Department of Chemistry, Boston College , 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Jeffery A Byers
- Eugene F. Merkert Chemistry Center, Department of Chemistry, Boston College , 2609 Beacon Street, Chestnut Hill, Massachusetts 02467, United States
| | - Christopher J Cramer
- Department of Chemistry, Chemical Theory Center, and Supercomputing Institute, University of Minnesota , 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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Cozzolino M, Leo V, Tedesco C, Mazzeo M, Lamberti M. Salen, salan and salalen iron(iii) complexes as catalysts for CO2/epoxide reactions and ROP of cyclic esters. Dalton Trans 2018; 47:13229-13238. [DOI: 10.1039/c8dt03169j] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Salan, salen and salalen iron complexes as catalysts in CO2/epoxide reactions and in the ROP of ε-caprolactone and l-lactide.
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Affiliation(s)
| | - Vincenza Leo
- Dipartimento di Chimica e Biologia “A. Zambelli”
- Università di Salerno
- Fisciano
- Italy
| | - Consiglia Tedesco
- Dipartimento di Chimica e Biologia “A. Zambelli”
- Università di Salerno
- Fisciano
- Italy
| | - Mina Mazzeo
- Dipartimento di Chimica e Biologia “A. Zambelli”
- Università di Salerno
- Fisciano
- Italy
| | - Marina Lamberti
- Dipartimento di Fisica “E. Caianiello”
- Università di Salerno
- Fisciano
- Italy
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Lee SL, Hu FL, Shang XJ, Shi YX, Tan AL, Mizera J, Clegg JK, Zhang WH, Young DJ, Lang JP. Efficient ring-opening polymerization (ROP) of ε-caprolactone catalysed by isomeric pyridyl β-diketonate iron(iii) complexes. NEW J CHEM 2017. [DOI: 10.1039/c7nj03571c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of FeL3 complexes of dipyridyl β-diketones were structurally characterized and their catalytic properties investigated.
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Affiliation(s)
- Sze-Ling Lee
- Faculty of Science
- Universiti Brunei Darussalam
- Brunei
| | - Fei-Long Hu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - Xiu-Juan Shang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - Yi-Xiang Shi
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - Ai Ling Tan
- Faculty of Science
- Universiti Brunei Darussalam
- Brunei
| | - Jens Mizera
- Department of Chemistry and Food Chemistry
- Technical University Dresden
- 01062 Dresden
- Germany
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences
- The University of Queensland, Brisbane
- St. Lucia
- Australia
| | - Wen-Hua Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
| | - David J. Young
- Faculty of Science, Health, Education and Engineering
- University of the Sunshine Coast
- Maroochydore DC
- Australia
| | - Jian-Ping Lang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- People's Republic of China
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