1
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Fazekas E, Lowy PA, Abdul Rahman M, Lykkeberg A, Zhou Y, Chambenahalli R, Garden JA. Main group metal polymerisation catalysts. Chem Soc Rev 2022; 51:8793-8814. [PMID: 36214205 DOI: 10.1039/d2cs00048b] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
With sustainability at the forefront of current polymerisation research, the typically earth-abundant, inexpensive and low-toxicity main group metals are attractive candidates for catalysis. Main group metals have been exploited in a broad range of polymerisations, ranging from classical alkene polymerisation to the synthesis of new bio-derived and degradable polyesters and polycarbonates via ring-opening polymerisation and ring-opening copolymerisation. This tutorial review highlights efficient polymerisation catalysts based on Group 1, Group 2, Zn and Group 13 metals. Key mechanistic pathways and catalyst developments are discussed, including tailored ligand design, heterometallic cooperativity, bicomponent systems and careful selection of the polymerisation conditions, all of which can be used to fine-tune the metal Lewis acidity and the metal-alkyl bond polarity.
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Affiliation(s)
- Eszter Fazekas
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | - Phoebe A Lowy
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | | | - Anna Lykkeberg
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | - Yali Zhou
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | - Raju Chambenahalli
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | - Jennifer A Garden
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
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2
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Kosuru SR, Lai FJ, Chang YL, Li CY, Lai YC, Ding S, Wu KH, Chen HY, Lo YH. Collaboration between Trinuclear Aluminum Complexes Bearing Bipyrazoles in the Ring-Opening Polymerization of ε-Caprolactone. Inorg Chem 2021; 60:10535-10549. [PMID: 34232620 DOI: 10.1021/acs.inorgchem.1c01192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trinuclear aluminum complexes bearing bipyrazoles were synthesized, and their catalytic activity for ε-caprolactone (CL) polymerization was investigated. DBu2Al3Me5 exhibited higher catalytic activity than did the dinuclear aluminum complex LBu2Al2Me4 (16 times as high for CL polymerization; [CL]:[DBu2Al3Me5]:[BnOH] = 100:0.5:5, [DBu2Al3Me5] = 10 mM, conversion 93% after 18 min at room temperature). Density functional theory calculations revealed a polymerization mechanism in which CL first approached the central Al atom and then moved to an external Al. The coordinated CL ring was opened because the repulsion of two tert-butyl groups on the ligands pushed an alkoxide initiator on an external Al to initiate CL. In these trinuclear Al catalysts, the central Al plays a role in monomer capture and then collaborates with the external Al to activate CL, accelerating polymerization.
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Affiliation(s)
- Someswara Rao Kosuru
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Feng-Jie Lai
- Department of Dermatology, Chi Mei Medical Center, Tainan, Taiwan, Republic of China.,Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan, Republic of China
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Chen-Yu Li
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Shangwu Ding
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China
| | - Kuo-Hui Wu
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan, Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, Republic of China
| | - Yung-Han Lo
- Department of Chemistry, Faculty of Science and Technology, Keio University, Minato City 108-8345, Tokyo, Japan
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3
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Nie K, Wang C, Cheng X, Li J, Han Y, Yao Y. Unbridged bidentate aluminum complexes supported by diaroylhydrazone ligands: Synthesis, structure and catalysis in polymerization of
ε
‐caprolactone and lactides. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kun Nie
- School of Chemistry and Chemical EngineeringTaishan University Taian 271000 China
| | - Changan Wang
- School of Chemistry and Chemical EngineeringTaishan University Taian 271000 China
| | - Xueli Cheng
- School of Chemistry and Chemical EngineeringTaishan University Taian 271000 China
| | - Jikun Li
- School of Chemistry and Chemical EngineeringTaishan University Taian 271000 China
| | - Yinfeng Han
- School of Chemistry and Chemical EngineeringTaishan University Taian 271000 China
| | - Yingming Yao
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
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4
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Praban S, Piromjitpong P, Balasanthiran V, Jayaraj S, Chisholm MH, Tantirungrotechai J, Phomphrai K. Highly efficient metal(iii) porphyrin and salen complexes for the polymerization of rac-lactide under ambient conditions. Dalton Trans 2019; 48:3223-3230. [DOI: 10.1039/c8dt04699a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metal(iii) complexes supported by porphyrin and salen ligands were highly efficient for rac-lactide polymerization at room temperature giving isotactic-enriched PLA.
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Affiliation(s)
- Siriwan Praban
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Parichat Piromjitpong
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | | | - Savithra Jayaraj
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | - Malcolm H. Chisholm
- Department of Chemistry and Biochemistry
- The Ohio State University
- Columbus
- USA
| | - Jonggol Tantirungrotechai
- Center for Catalysis
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Mahidol University
- Bangkok 10400
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Wangchan
- Thailand
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5
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Palenzuela M, Muñoz MT, Vega JF, Gutiérrez-Rodríguez Á, Cuenca T, Mosquera MEG. Heterobimetallic aluminate derivatives with bulky phenoxide ligands: a catalyst for selective vinyl polymerization. Dalton Trans 2019; 48:6435-6444. [DOI: 10.1039/c9dt00761j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
New aluminates as active catalysts for vinyl polymerization are described, as well as a strategy to crosslinked polymers from GMA in a controlled fashion.
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Affiliation(s)
- Miguel Palenzuela
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Mª Teresa Muñoz
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Juan F. Vega
- BIOPHYM
- Department of Macromolecular Physics
- Instituto de Estructura de la Materia
- IEM-CSIC
- 28006 Madrid
| | - Ángel Gutiérrez-Rodríguez
- Unidad de Difracción de rayos X – Monocristal
- Servicios Científico-Técnicos
- Universidad de Oviedo
- Spain
| | - Tomás Cuenca
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
| | - Marta E. G. Mosquera
- Departamento de Química Orgánica y Química Inorgánica
- Instituto de Investigacion en Química “Andres M. del Río” (IQAR) Universidad de Alcalá
- Campus Universitario
- Madrid
- Spain
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6
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Harinath A, Bhattacharjee J, Sarkar A, Panda TK. Alkali metal complex-mediated ring-opening polymerization of rac-LA, ε-caprolactone, and δ-valerolactone. NEW J CHEM 2019. [DOI: 10.1039/c9nj01130g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Catalytic ring opening polymerization (ROP) of rac-lactide, ε-caprolactone, and δ-valerolactone using alkali metal (Li, Na, K) complexes as competent catalysts are reported.
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Affiliation(s)
- Adimulam Harinath
- Department of Chemistry
- Indian Institute of Technology Hyderabad Kandi – 502 285
- Sangareddy
- India
| | - Jayeeta Bhattacharjee
- Department of Chemistry
- Indian Institute of Technology Hyderabad Kandi – 502 285
- Sangareddy
- India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd
- Bangalore – 560 100
- India
| | - Tarun K. Panda
- Department of Chemistry
- Indian Institute of Technology Hyderabad Kandi – 502 285
- Sangareddy
- India
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7
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Group 4 metal complexes containing the salalen ligands: Synthesis, structural characterization and studies on the ROP of cyclic esters. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.03.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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8
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Gadomska-Gajadhur A, Synoradzki L, Ruśkowski P. Poly(lactic acid) for Biomedical Application–Synthesis of Biocompatible Mg Catalyst and Optimization of Its Use in Polymerization of Lactide with the Aid of Design of Experiments. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00165] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Agnieszka Gadomska-Gajadhur
- Laboratory of Technological Process, Faculty of Chemistry, Warsaw University of Technology, ul. Noakowskiego 3, 00-664 Warsaw, Poland
| | - Ludwik Synoradzki
- Laboratory of Technological Process, Faculty of Chemistry, Warsaw University of Technology, ul. Noakowskiego 3, 00-664 Warsaw, Poland
| | - Paweł Ruśkowski
- Laboratory of Technological Process, Faculty of Chemistry, Warsaw University of Technology, ul. Noakowskiego 3, 00-664 Warsaw, Poland
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9
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Schmitz LA, McCollum AM, Rheingold AL, Green DB, Fritsch JM. Synthesis and structures of aluminum ion-pair complexes that act as L- and racemic-lactide ring opening polymerization initiators. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Harinath A, Bhattacharjee J, Sarkar A, Nayek HP, Panda TK. Ring Opening Polymerization and Copolymerization of Cyclic Esters Catalyzed by Group 2 Metal Complexes Supported by Functionalized P–N Ligands. Inorg Chem 2018; 57:2503-2516. [DOI: 10.1021/acs.inorgchem.7b02847] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Adimulam Harinath
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana, India
| | - Jayeeta Bhattacharjee
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana, India
| | - Alok Sarkar
- Momentive Performance
Materials Pvt. Ltd., Bangalore 560 100, India
| | - Hari Pada Nayek
- Department of Applied Chemistry, Indian Institute of Technology (ISM), Dhanbad 826 004, Jharkhand, India
| | - Tarun K. Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad Kandi 502 285, Sangareddy, Telangana, India
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11
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Duan YL, Hu ZJ, Yang BQ, Ding FF, Wang W, Huang Y, Yang Y. Zirconium and hafnium complexes bearing pyrrolidine derived salalen-type {ONNO} ligands and their application for ring-opening polymerization of lactides. Dalton Trans 2017; 46:11259-11270. [PMID: 28799600 DOI: 10.1039/c7dt02113e] [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
The reactions of pyrrolidine derived salalen-type {ONNO} ligands (S)-L1-3-H2 with 1 equiv. M(OiPr)4(HOiPr) (M = Zr or Hf) in diethyl ether yielded complexes [L1-3M(OiPr)2] (L = L1, M = Zr (1); L = L2, M = Zr (2), Hf (3); L = L3, M = Zr (4), Hf (5)). All of these complexes were well characterized by NMR spectroscopy, elemental analyses and single-crystal X-ray analysis in the case of complexes 1 and 3-5. X-ray structural determination revealed that these complexes were analogous mononuclear species and had a similar structure in which the metal centers were six-coordinated to two oxygen atoms and two nitrogen atoms of one ligand and two oxygen atoms of two isopropoxy groups. All of these complexes efficiently initialized the ring-opening polymerization of lactides to afford polymers with controlled molecular weight and narrow polydispersity. Furthermore, the ring-opening polymerization of rac-lactide catalyzed by complexes 1-5 afforded isotactic-enriched polymers in solution (Pm = 0.74-0.80) and under melt conditions (Pm = 0.63-0.72).
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Affiliation(s)
- Yu-Lai Duan
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, P. R. China.
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12
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Bhattacharjee J, Harinath A, Nayek HP, Sarkar A, Panda TK. Highly Active and Iso-Selective Catalysts for the Ring-Opening Polymerization of Cyclic Esters using Group 2 Metal Initiators. Chemistry 2017; 23:9319-9331. [DOI: 10.1002/chem.201700672] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Jayeeta Bhattacharjee
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
| | - Adimulam Harinath
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
| | - Hari Pada Nayek
- Department of Applied Chemistry; Indian Institute of Technology (ISM), Dhanbad; 826004 Jharkhand India
| | - Alok Sarkar
- Momentive Performance Materials Pvt. Ltd. Survey No. 09; Hosur Road Electronic City (West) Bangalore 560100 India
| | - Tarun K. Panda
- Department of Chemistry; Indian Institute of Technology Hyderabad; Kandi 502 285, Sangareddy, Telangana India
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13
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Robert C, Schmid TE, Richard V, Haquette P, Raman SK, Rager MN, Gauvin RM, Morin Y, Trivelli X, Guérineau V, Del Rosal I, Maron L, Thomas CM. Mechanistic Aspects of the Polymerization of Lactide Using a Highly Efficient Aluminum(III) Catalytic System. J Am Chem Soc 2017; 139:6217-6225. [PMID: 28398052 DOI: 10.1021/jacs.7b01749] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report here a unique example of an in situ generated aluminum initiator stabilized by a C2-symmetric salen ligand which shows a hitherto unknown high activity for the ROP of rac-lactide at room temperature. Using a simple and robust catalyst system, which is prepared from a salen complex and an onium salt, this convenient route employs readily available reagents that afford polylactide in good yields with narrow polydispersity indices, without the need for time-consuming and expensive processes that are typically required for catalyst preparation and purification. In line with the experimental evidence, DFT studies reveal that initiation and propagation proceed via an external alkoxide attack on the coordinated monomer.
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Affiliation(s)
- Carine Robert
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Thibault E Schmid
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Vincent Richard
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Pierre Haquette
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Sumesh K Raman
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Marie-Noelle Rager
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
| | - Régis M Gauvin
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois , UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Yohann Morin
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois , UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Xavier Trivelli
- Univ. Lille, CNRS , UMR 8576 - UGSF - Unité de Glycobiologie Structurale et Fonctionnelle, F-59000 Lille, France
| | - Vincent Guérineau
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Iker Del Rosal
- Université de Toulouse ; INSA, UPS; LPCNO (IRSAMC), 135 avenue de Rangueil, F-31077 Toulouse, France.,CNRS ; UMR 5215 (IRSAMC), F-31077 Toulouse, France
| | - Laurent Maron
- Université de Toulouse ; INSA, UPS; LPCNO (IRSAMC), 135 avenue de Rangueil, F-31077 Toulouse, France.,CNRS ; UMR 5215 (IRSAMC), F-31077 Toulouse, France
| | - Christophe M Thomas
- Chimie ParisTech, PSL Research University, CNRS , Institut de Recherche de Chimie Paris, 75005 Paris, France
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14
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Piskun YA, Vasilenko IV, Zaitsev KV, Oprunenko YF, Kostjuk SV. Synthesis of Functional Poly(ε-caprolactone)s via Living Ring-Opening Polymerization of ε-Caprolactone Using Functionalized Aluminum Alkoxides as Initiators. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600580] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yulia A. Piskun
- Research Institute for Physical Chemical Problems of the Belarusian State University; 14 Leningradskaya St. 220006 Minsk Belarus
| | - Irina V. Vasilenko
- Research Institute for Physical Chemical Problems of the Belarusian State University; 14 Leningradskaya St. 220006 Minsk Belarus
| | - Kirill V. Zaitsev
- Chemistry Department Moscow State University; B-234 Leninskie Gory 1, 3 119991 Moscow Russia
| | - Yuri F. Oprunenko
- Chemistry Department Moscow State University; B-234 Leninskie Gory 1, 3 119991 Moscow Russia
| | - Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems of the Belarusian State University; 14 Leningradskaya St. 220006 Minsk Belarus
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15
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Xu TQ, Yang GW, Liu C, Lu XB. Highly Robust Yttrium Bis(phenolate) Ether Catalysts for Excellent Isoselective Ring-Opening Polymerization of Racemic Lactide. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02439] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tie-Qi Xu
- College
of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Guan-Wen Yang
- College
of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
- MOE
Laboratory of Macromolecular Synthesis and Functionalization, Department
of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chuang Liu
- College
of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiao-Bing Lu
- College
of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
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16
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Lin TH, Cai YR, Chang W, Hu CH, Lee TY, Datta A, Hsiao HC, Lin CH, Huang JH. Synthesis and characterization of multidentate ethylene bridged pyrrole- and ketoamine-morpholine aluminum compounds. Structure, theoretical calculation and catalytic study. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.10.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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17
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Dai ZR, Yin CF, Wang C, Wu JC. Zinc bis-Schiff base complexes: Synthesis, structure, and application in ring-opening polymerization of rac-lactide. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Guo Z, Wang S, Wei X. Aluminum complexes of β-hydroxy-imino ligands: Synthesis, structures and application in the Tishchenko reaction. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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19
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Rajashekhar B, Roymuhury SK, Chakraborty D, Ramkumar V. Group 4 metal complexes of Trost's semi-crown ligand: synthesis, structural characterization and studies on the ring-opening polymerization of lactides and ε-caprolactone. Dalton Trans 2016; 44:16280-93. [PMID: 26262508 DOI: 10.1039/c5dt02267c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of titanium(IV), zirconium(IV) and hafnium(IV) complexes of Trost's semi-crown ligand is described. All complexes were fully characterized by 1H and 13C NMR and mass spectroscopy. The molecular structures of the representative complexes 2, 3 and 4 were determined by single-crystal X-ray diffraction studies. The X-ray diffraction studies reveal that complexes 2, 3 and 4 crystallized in an orthorhombic crystal system. Complexes 2 and 3 have a monomeric structure in the solid state with distorted octahedral geometry around the metal center, whereas complex 4 was found to crystallize in a trimeric structure bridging with an oxygen atom, where the geometry around the titanium is distorted trigonal bipyramidal. The activities and stereoselectivities of these complexes toward the ring-opening polymerization (ROP) of lactides (L-LA and rac-LA) and ε-caprolactone (CL) have been investigated. Complexes 1–4 were found to be efficient single-component initiators for the ring-opening polymerization of cyclic esters and yielded high molecular weight polymers (Mn) with narrow molecular weight distributions (MWD).The microstructure of the resultant polylactides (PLAs) from rac-LA was determined. Complexes 2 and 3 afforded isotactic-enriched PLA (Pm = 0.78–0.71) with narrow MWD (1.07–1.04), on the other hand complexes 1 and 4 produced atactic PLA. Kinetic and post polymerization studies confirm that the polymerization proceeds through the coordination–insertion mechanism.
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Affiliation(s)
- Bijja Rajashekhar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600 036, Tamil Nadu, India.
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20
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Devaine-Pressing K, Lehr JH, Pratt ME, Dawe LN, Sarjeant AA, Kozak CM. Magnesium amino-bis(phenolato) complexes for the ring-opening polymerization of rac-lactide. Dalton Trans 2016; 44:12365-75. [PMID: 25805063 DOI: 10.1039/c5dt00236b] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnesium compounds of tetradentate amino-bis(phenolato) ligands, Mg[L1] (1) and Mg[L2] (2) (where [L1] = 2-pyridyl-N,N-bis(2-methylene-4-methoxy-6-tert-butylphenolato), and [L2] = dimethylaminoethylamino-N,N-bis(2-methylene-4-methyl-6-tert-butylphenolato)) were prepared. The proligands, H2[L1] and H2[L2] were reacted with di(n-butyl)magnesium in toluene to give the desired compounds in high yields. Compounds 1 and 2 exhibit dimeric structures in solutions of non-coordinating solvents as observed by NMR spectroscopy and in the solid state as shown by the single crystal X-ray structure of 2. These compounds exhibit good activity for rac-lactide polymerization in solution and in molten lactide.
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Affiliation(s)
- Katalin Devaine-Pressing
- Department of Chemistry, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X7.
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21
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Wei Y, Wang S, Zhou S. Aluminum alkyl complexes: synthesis, structure, and application in ROP of cyclic esters. Dalton Trans 2016; 45:4471-85. [PMID: 26876985 DOI: 10.1039/c5dt04240b] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Aluminum alkyl complexes have very useful applications as catalysts or reagents in small molecule transformations and as cocatalysts in olefin polymerization. This short review focuses on some recent developments in the design, synthesis and structure of aluminum(iii) alkyl complexes supported by various ligands bearing nitrogen, oxygen, sulfur or phosphorus atoms, and their catalytic applications in the ring-opening polymerization (ROP) of cyclic esters. The coordination chemistry of the Al metal centre and the catalytic activity changes of the complexes caused by ligand modifications are also discussed.
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Affiliation(s)
- Yun Wei
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China.
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22
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Isnard F, Lamberti M, Lettieri L, D'auria I, Press K, Troiano R, Mazzeo M. Bimetallic salen aluminum complexes: cooperation between reactive centers in the ring-opening polymerization of lactides and epoxides. Dalton Trans 2016; 45:16001-16010. [DOI: 10.1039/c6dt02592g] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In dinuclear aluminum complexes, opportunely designed to have proximal coordinative pockets, the communication between the two reactive centers allows enhanced catalytic performances.
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Affiliation(s)
- Florence Isnard
- Department of Chemistry and Biology “A. Zambelli” University of Salerno
- I-84084
- 132 Fisciano
- Italy
| | - Marina Lamberti
- Department of Physics “E. Caianiello” University of Salerno
- I-84084
- 132 Fisciano
- Italy
| | - Luana Lettieri
- Department of Chemistry and Biology “A. Zambelli” University of Salerno
- I-84084
- 132 Fisciano
- Italy
| | - Ilaria D'auria
- Department of Chemistry and Biology “A. Zambelli” University of Salerno
- I-84084
- 132 Fisciano
- Italy
| | - Konstantin Press
- School of Chemistry
- Raymond and Beverly Sackler Faculty of Exact Sciences
- Tel Aviv University
- Ramat Aviv
- Tel Aviv 69978
| | - Rubina Troiano
- Department of Chemistry and Biology “A. Zambelli” University of Salerno
- I-84084
- 132 Fisciano
- Italy
| | - Mina Mazzeo
- Department of Chemistry and Biology “A. Zambelli” University of Salerno
- I-84084
- 132 Fisciano
- Italy
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23
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Horeglad P, Cybularczyk M, Litwińska A, Dąbrowska AM, Dranka M, Żukowska GZ, Urbańczyk M, Michalak M. Controlling the stereoselectivity of rac-LA polymerization by chiral recognition induced the formation of homochiral dimeric metal alkoxides. Polym Chem 2016. [DOI: 10.1039/c5py02005k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Chiral recognition of monomeric Me2MOR units resulting in the formation of homochiral dimeric species [Me2M(μ-OR)]2(M = Ga, In), leads to heteroselective catalysts for the ring opening polymerization ofrac-lactide (rac-LA).
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Affiliation(s)
- P. Horeglad
- Centre of New Technologies
- University of Warsaw
- 02-097 Warsaw
- Poland
| | - M. Cybularczyk
- Centre of New Technologies
- University of Warsaw
- 02-097 Warsaw
- Poland
- Faculty of Chemistry
| | - A. Litwińska
- Faculty of Chemistry
- University of Warsaw
- 02-093 Warsaw
- Poland
| | - A. M. Dąbrowska
- Centre of New Technologies
- University of Warsaw
- 02-097 Warsaw
- Poland
- Faculty of Chemistry
| | - M. Dranka
- Faculty of Chemistry
- Warsaw University of Technology
- Warsaw
- Poland
| | - G. Z. Żukowska
- Faculty of Chemistry
- Warsaw University of Technology
- Warsaw
- Poland
| | - M. Urbańczyk
- Centre of New Technologies
- University of Warsaw
- 02-097 Warsaw
- Poland
- Faculty of Chemistry
| | - M. Michalak
- Institute of Organic Chemistry
- Polish Academy of Science
- 01-224 Warsaw
- Poland
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24
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Meduri A, Cozzolino M, Milione S, Press K, Sergeeva E, Tedesco C, Mazzeo M, Lamberti M. Yttrium and aluminium complexes bearing dithiodiolate ligands: synthesis and application in cyclic ester polymerization. Dalton Trans 2015; 44:17990-8000. [PMID: 26406112 DOI: 10.1039/c5dt02938d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges (CF3)2C(OH)CH2SRSCH2C(OH)(CF3)2 (L(1)-H2, R = CH2CH2 and L(2)-H2, R = C6H4) were synthesized in good yields by reacting tris(silylamide)yttrium or trimethylaluminium with one equivalent of the proligand. All complexes were characterized by NMR and elemental analysis, and single-crystal X-ray structural analysis was also performed for one of the yttrium complexes. The catalytic activities of the four complexes in the ring-opening polymerization of ε-caprolactone and rac-lactide have been investigated. Furthermore, DOSY experiment and DFT calculations have been carried out to determine the structure of the isopropoxo derivative of the complex L(2)Y amide.
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Affiliation(s)
- A Meduri
- Dipartimento di Chimica e Biologia, Università di Salerno, via Giovanni Paolo II 132, I-84084, Fisciano, Salerno, Italy
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25
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Horeglad P, Cybularczyk M, Trzaskowski B, Żukowska GZ, Dranka M, Zachara J. Dialkylgallium Alkoxides Stabilized with N-Heterocyclic Carbenes: Opportunities and Limitations for the Controlled and Stereoselective Polymerization of rac-Lactide. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00071] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paweł Horeglad
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Martyna Cybularczyk
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
- Faculty
of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Bartosz Trzaskowski
- Centre
of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
| | - Grażyna Zofia Żukowska
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Maciej Dranka
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Janusz Zachara
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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26
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Methoxyaryl substituted aluminum ketiminate complexes and its activity in ring opening polymerization processes. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.03.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Kireenko MM, Kuchuk EA, Zaitsev KV, Tafeenko VA, Oprunenko YF, Churakov AV, Lermontova EK, Zaitseva GS, Karlov SS. Aluminum complexes based on pyridine substituted alcohols: synthesis, structure, and catalytic application in ROP. Dalton Trans 2015; 44:11963-76. [DOI: 10.1039/c5dt01001b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
2,6-Bis(hydroxyalkyl)pyridines were used in the synthesis of Al complexes. The structure of the ligand determines the complex nature. Compounds were used as initiators of lactone ROP.
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Affiliation(s)
| | | | | | | | | | - Andrei V. Churakov
- Institute of General and Inorganic Chemistry
- Russian Acad. Sci
- 119991 Moscow
- Russia
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28
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Osten KM, Aluthge DC, Mehrkhodavandi P. The effect of steric changes on the isoselectivity of dinuclear indium catalysts for lactide polymerization. Dalton Trans 2015; 44:6126-39. [DOI: 10.1039/c5dt00222b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalized diaminophenolates as ligands for dinuclear indium catalysts were investigated in the ring-opening polymerization of lactide. An increase in the steric bulk of the ligand phenolates decreases the selectivity of the catalysts due to catalyst dissociation during polymerization.
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Affiliation(s)
- K. M. Osten
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - D. C. Aluthge
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
| | - P. Mehrkhodavandi
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
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29
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Bakewell C, Fateh-Iravani G, Beh DW, Myers D, Tabthong S, Hormnirun P, White AJP, Long N, Williams CK. Comparing a series of 8-quinolinolato complexes of aluminium, titanium and zinc as initiators for the ring-opening polymerization of rac-lactide. Dalton Trans 2015; 44:12326-37. [DOI: 10.1039/c5dt00192g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The preparation, characterization and properties of a series of 8-hydroxy quinolinolate complexes of Ti(iv), Al(iii) and Zn(ii) are presented. The complexes are active initiators for rac-lactide polymerizations: their performances are compared.
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Affiliation(s)
- Clare Bakewell
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | | | - Daniel W. Beh
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | - Dominic Myers
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
| | - Sittichoke Tabthong
- Department of Chemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Pimpa Hormnirun
- Department of Chemistry
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | | | - Nicholas Long
- Department of Chemistry
- Imperial College London
- London SW7 2AZ
- UK
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30
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Wang H, Yang Y, Ma H. Stereoselectivity Switch between Zinc and Magnesium Initiators in the Polymerization of rac-Lactide: Different Coordination Chemistry, Different Stereocontrol Mechanisms. Macromolecules 2014. [DOI: 10.1021/ma501896r] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Haobing Wang
- Shanghai Key Laboratory of Functional
Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai, P. R. China
| | - Yang Yang
- Shanghai Key Laboratory of Functional
Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai, P. R. China
| | - Haiyan Ma
- Shanghai Key Laboratory of Functional
Materials Chemistry and Laboratory of Organometallic Chemistry, East China University of Science and Technology, Shanghai, P. R. China
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31
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Bakewell C, White AJP, Long NJ, Williams CK. Metal-size influence in iso-selective lactide polymerization. Angew Chem Int Ed Engl 2014; 53:9226-30. [PMID: 25044165 PMCID: PMC4499264 DOI: 10.1002/anie.201403643] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Indexed: 11/08/2022]
Abstract
Iso-selective initiators for the ring-opening polymerization (ROP) of rac-lactide are rare outside of Group 13. We describe the first examples of highly iso-selective lutetium initiators. The phosphasalen lutetium ethoxide complex shows excellent iso-selectivity, with a P(i) value of 0.81-0.84 at 298 K, excellent rates, and high degrees of polymerization control. Conversely, the corresponding La derivative exhibits moderate heteroselectivity (P(s)=0.74, 298 K). Thus, the choice of metal center is shown to be crucial in determining the level and mode of stereocontrol. The relative order of rates for the series of complexes is inversely related to metallic covalent radius: that is, La>Y>Lu.
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Affiliation(s)
- Clare Bakewell
- Department of Chemistry, Imperial College LondonSouth Kensington (UK)
| | - Andrew J P White
- Department of Chemistry, Imperial College LondonSouth Kensington (UK)
| | - Nicholas J Long
- Department of Chemistry, Imperial College LondonSouth Kensington (UK)
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32
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Stopper A, Press K, Okuda J, Goldberg I, Kol M. Zirconium Complexes of Phenylene-Bridged {ONSO} Ligands: Coordination Chemistry and Stereoselective Polymerization of rac-Lactide. Inorg Chem 2014; 53:9140-50. [DOI: 10.1021/ic501164c] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ayellet Stopper
- School of Chemistry,
Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Konstantin Press
- School of Chemistry,
Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany
| | - Israel Goldberg
- School of Chemistry,
Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Moshe Kol
- School of Chemistry,
Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
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33
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Abbina S, Du G. Zinc-Catalyzed Highly Isoselective Ring Opening Polymerization of rac-Lactide. ACS Macro Lett 2014; 3:689-692. [PMID: 25068079 PMCID: PMC4105174 DOI: 10.1021/mz5002959] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 06/28/2014] [Indexed: 01/21/2023]
Abstract
![]()
A family
of chiral zinc amido-oxazolinate complexes are shown to
be highly active and isoselective initiators for the ring-opening
polymerization (ROP) of rac-lactide, yielding isotactic
stereoblock polylactides (PLA) with Pm up to 0.91. This represents the highest isoselectivity observed
with zinc-based catalysts for ROP of rac-lactide.
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Affiliation(s)
- Srinivas Abbina
- Department
of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Guodong Du
- Department
of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
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34
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Bakewell C, White AJP, Long NJ, Williams CK. Metal-Size Influence in Iso-Selective Lactide Polymerization. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403643] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Nie K, Feng T, Song F, Zhang Y, Sun H, Yuan D, Yao Y, Shen Q. Bimetallic amine-bridged bis(phenolate) lanthanide aryloxides and alkoxides: synthesis, characterization, and application in the ring-opening polymerization of rac-lactide and rac-β-butyrolactone. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5142-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Maudoux N, Roisnel T, Carpentier JF, Sarazin Y. Aluminum, Indium, and Mixed Yttrium–Lithium Complexes Supported by a Chiral Binap-Based Fluorinated Dialkoxide: Structural Features and Heteroselective ROP of Lactide. Organometallics 2014. [DOI: 10.1021/om500458g] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nicolas Maudoux
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Thierry Roisnel
- Institut
des Sciences Chimiques de Rennes, Centre de Diffraction X, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes
Cedex, France
| | - Jean-François Carpentier
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Yann Sarazin
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
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37
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Aluthge DC, Yan EX, Ahn JM, Mehrkhodavandi P. Role of Aggregation in the Synthesis and Polymerization Activity of SalBinap Indium Alkoxide Complexes. Inorg Chem 2014; 53:6828-36. [DOI: 10.1021/ic500647j] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Dinesh C. Aluthge
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada
| | - Ellen X. Yan
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada
| | - Jun Myun Ahn
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada
| | - Parisa Mehrkhodavandi
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada
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38
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Go MJ, Kim SH, Kang YY, Park HR, Kim Y, Lee J. Highly stable methylaluminum dimer complex with chiral tridentate ligand. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Beattie C, North M. Mechanistic investigation of the reaction of epoxides with heterocumulenes catalysed by a bimetallic aluminium salen complex. Chemistry 2014; 20:8182-8. [PMID: 24824615 DOI: 10.1002/chem.201400007] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Indexed: 12/22/2022]
Abstract
The bimetallic aluminium(salen) complex [(Al(salen))2O] is known to catalyse the reaction between epoxides and heterocumulenes (carbon dioxide, carbon disulfide and isocyanates) leading to five-membered ring heterocycles. Despite their apparent similarities, these three reactions have very different mechanistic features, and a kinetic study of oxazolidinone synthesis combined with previous kinetic work on cyclic carbonate and cyclic dithiocarbonate synthesis showed that all three reactions follow different rate equations. An NMR study of [Al(salen)]2O and phenylisocyanate provided evidence for an interaction between them, consistent with the rate equation data. A variable-temperature kinetics study on all three reactions showed that cyclic carbonate synthesis had a lower enthalpy of activation and a more negative entropy of activation than the other two heterocycle syntheses. The kinetic study was extended to oxazolidinone synthesis catalysed by the monometallic complex Al(salen)Cl, and this reaction was found to have a much less negative entropy of activation than any reaction catalysed by [Al(salen)]2O, a result that can be explained by the partial dissociation of an oligomeric Al(salen)Cl complex. A mechanistic rationale for all of the results is presented in terms of [Al(salen)]2O being able to function as a Lewis acid and/or a Lewis base, depending upon the susceptibility of the heterocumulene to reaction with nucleophiles.
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Affiliation(s)
- Christopher Beattie
- School of Chemistry, Newcastle University, Newcastle upon Tyne, NE1 7RU (UK)
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40
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Bian S, Abbina S, Lu Z, Kolodka E, Du G. Ring-Opening Polymerization of rac-Lactide with Aluminum Chiral Anilido-Oxazolinate Complexes. Organometallics 2014; 33:2489-2495. [PMID: 24891754 PMCID: PMC4036730 DOI: 10.1021/om401226j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Indexed: 01/29/2023]
Abstract
![]()
A series
of dimethylaluminum complexes (L1a–i)AlMe2 (2a–i, where HL1a–i = 2-(2′-ArNH)phenyl-4-R1-oxazoline) bearing
chiral, bidentate anilido-oxazolinate ligands
have been prepared and characterized. Six of the complexes, in the
presence of an alcohol cocatalyst, are shown to be active initiators
for the stereoselective ring-opening polymerization of rac-lactide in toluene solution and under bulk conditions, yielding
polylactides with a range of tacticity from slightly isotactic to
moderately heterotactic. The reactivity and selectivity of these catalysts
are discussed on the basis of the effect of their substituents.
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Affiliation(s)
- Shi Bian
- Department of Chemistry, University of North Dakota , 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Srinivas Abbina
- Department of Chemistry, University of North Dakota , 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Zhengliang Lu
- Department of Chemistry, University of North Dakota , 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
| | - Edward Kolodka
- Department of Chemical Engineering, University of North Dakota , Grand Forks, North Dakota 58203, United States
| | - Guodong Du
- Department of Chemistry, University of North Dakota , 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, United States
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41
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Maudoux N, Roisnel T, Dorcet V, Carpentier JF, Sarazin Y. Chiral (1,2)-Diphenylethylene-Salen Complexes of Triel Metals: Coordination Patterns and Mechanistic Considerations in the Isoselective ROP of Lactide. Chemistry 2014; 20:6131-47. [DOI: 10.1002/chem.201304788] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Indexed: 11/06/2022]
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42
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Zaitsev KV, Piskun YA, Oprunenko YF, Karlov SS, Zaitseva GS, Vasilenko IV, Churakov AV, Kostjuk SV. Controlled ring‐opening homo‐ and copolymerization of ɛ‐caprolactone and
d,l
‐lactide by iminophenolate aluminum complexes: An efficient approach toward well‐defined macromonomers. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27110] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Kirill V. Zaitsev
- Department of ChemistryMoscow State UniversityLeninskye Gory 1Moscow119991 Russia
| | - Yulia A. Piskun
- Research Institute for Physical Chemical Problems of the Belarusian State UniversityLeningradskaya St., 14Minsk220030 Belarus
| | - Yuri F. Oprunenko
- Department of ChemistryMoscow State UniversityLeninskye Gory 1Moscow119991 Russia
| | - Sergey S. Karlov
- Department of ChemistryMoscow State UniversityLeninskye Gory 1Moscow119991 Russia
| | - Galina S. Zaitseva
- Department of ChemistryMoscow State UniversityLeninskye Gory 1Moscow119991 Russia
| | - Irina V. Vasilenko
- Research Institute for Physical Chemical Problems of the Belarusian State UniversityLeningradskaya St., 14Minsk220030 Belarus
| | - Andrei V. Churakov
- Russian Academy Science, N.S. Kurnakov General and Inorganic Chemistry InstituteLeninskii pr., 31Moscow119991 Russia
| | - Sergei V. Kostjuk
- Research Institute for Physical Chemical Problems of the Belarusian State UniversityLeningradskaya St., 14Minsk220030 Belarus
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43
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Klitzke JS, Roisnel T, Kirillov E, Casagrande ODL, Carpentier JF. Discrete O-Lactate and β-Alkoxybutyrate Aluminum Pyridine–Bis(naphtholate) Complexes: Models for Mechanistic Investigations in the Ring-Opening Polymerization of Lactides and β-Lactones. Organometallics 2014. [DOI: 10.1021/om401214q] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Joice S. Klitzke
- Institut des Sciences Chimiques de Rennes, Organometallics: Materials
and Catalysis Department, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
- Laboratório de Catálise Molecular, Instituto
de Quı́mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre RS 90501-970, Brazil
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes,
Centre de diffraction X, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Evgeny Kirillov
- Institut des Sciences Chimiques de Rennes, Organometallics: Materials
and Catalysis Department, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Osvaldo de L. Casagrande
- Laboratório de Catálise Molecular, Instituto
de Quı́mica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre RS 90501-970, Brazil
| | - Jean-François Carpentier
- Institut des Sciences Chimiques de Rennes, Organometallics: Materials
and Catalysis Department, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
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44
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Bouyahyi M, Duchateau R. Metal-Based Catalysts for Controlled Ring-Opening Polymerization of Macrolactones: High Molecular Weight and Well-Defined Copolymer Architectures. Macromolecules 2014. [DOI: 10.1021/ma402072t] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Miloud Bouyahyi
- SABIC T&I, STC-Geleen, SABIC Europe B.V., Urmonderbaan 22, 6160 AH Geleen, The Netherlands
| | - Rob Duchateau
- SABIC T&I, STC-Geleen, SABIC Europe B.V., Urmonderbaan 22, 6160 AH Geleen, The Netherlands
- Laboratory
of Polymer Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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45
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46
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Li Y, Zhao KQ, Elsegood MRJ, Prior TJ, Sun X, Mo S, Redshaw C. Organoaluminium complexes of ortho-, meta-, para-anisidines: synthesis, structural studies and ROP of ε-caprolactone (and rac-lactide). Catal Sci Technol 2014. [DOI: 10.1039/c4cy00624k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
{[1,2-(OMe),NC6H4(μ-Me2Al)](μ-Me2Al)}2 (1), [1,3-(Me3AlOMe),NHC6H4(μ-Me2Al)]2 (2) and [1,4-(Me3AlOMe),NHC6H4(μ-Me2Al)]2 (3) are all highly active for the ROP of ε-caprolactone.
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Affiliation(s)
- Yuanzhuo Li
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu, China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu, China
| | | | | | - Xinsen Sun
- Department of Chemistry
- University of Hull
- Hull, UK
| | - Shanyan Mo
- Department of Chemistry
- University of Hull
- Hull, UK
| | - Carl Redshaw
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu, China
- Department of Chemistry
- University of Hull
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47
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Gao Y, Dai Z, Zhang J, Ma X, Tang N, Wu J. Trinuclear and Tetranuclear Magnesium Alkoxide Clusters as Highly Active Initiators for Ring-Opening Polymerization of l-Lactide. Inorg Chem 2013; 53:716-26. [DOI: 10.1021/ic401459a] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yuan Gao
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Zhongran Dai
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Jinjin Zhang
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xinxian Ma
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Ning Tang
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Jincai Wu
- Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province, State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
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48
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Klitzke JS, Roisnel T, Kirillov E, Casagrande ODL, Carpentier JF. Yttrium– and Aluminum–Bis(phenolate)pyridine Complexes: Catalysts and Model Compounds of the Intermediates for the Stereoselective Ring-Opening Polymerization of Racemic Lactide and β-Butyrolactone. Organometallics 2013. [DOI: 10.1021/om401047r] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Joice S. Klitzke
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
- Instituto
de Química, Laboratório de Catálise Molecular, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves,
9500, Porto Alegre, RS 90501-970, Brazil
| | - Thierry Roisnel
- Institut
des Sciences Chimiques de Rennes, Centre de Diffraction X, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Evgeny Kirillov
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
| | - Osvaldo de L. Casagrande
- Instituto
de Química, Laboratório de Catálise Molecular, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves,
9500, Porto Alegre, RS 90501-970, Brazil
| | - Jean-François Carpentier
- Institut
des Sciences Chimiques de Rennes, Organometallics: Materials and Catalysis
Laboratories, UMR 6226 CNRS-Université de Rennes 1, F-35042 Rennes Cedex, France
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49
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Yang S, Nie K, Zhang Y, Xue M, Yao Y, Shen Q. New [ONOO]-Type Amine Bis(phenolate) Ytterbium(II) and -(III) Complexes: Synthesis, Structure, and Catalysis for Highly Heteroselective Polymerization of rac-Lactide. Inorg Chem 2013; 53:105-15. [DOI: 10.1021/ic401747n] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sheng Yang
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Kun Nie
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yong Zhang
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Mingqiang Xue
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yingming Yao
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Qi Shen
- Key Laboratory of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
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50
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Jianming R, Anguo X, Hongwei W, Hailin Y. Review – recent development of ring-opening polymerization of cyclic esters using aluminum complexes. Des Monomers Polym 2013. [DOI: 10.1080/15685551.2013.840509] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Affiliation(s)
- Ruan Jianming
- Powder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410086, P.R. China
| | - Xiao Anguo
- Department of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde, Hunan, 415000, P.R. China
| | - Wu Hongwei
- Powder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410086, P.R. China
| | - Yang Hailin
- Powder Metallurgy Research Institute, Central South University, Changsha, Hunan, 410086, P.R. China
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