1
|
Meng X, Qi Z, Yu L, Zhang Y. Catalytic System for Poly(lactic acid) Synthesis: Opportunities and Challenges. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202206051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
|
2
|
Glöckler E, Ghosh S, Schulz S. β-Diketiminate and β-Ketoiminate Metal Catalysts for Ring-Opening Polymerization of Cyclic Esters. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2121837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Eduard Glöckler
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Swarup Ghosh
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Stephan Schulz
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Duisburg, Germany
| |
Collapse
|
3
|
Xu J, Wang X, Liu J, Feng X, Gnanou Y, Hadjichristidis N. Ionic H-bonding organocatalysts for the ring-opening polymerization of cyclic esters and cyclic carbonates. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2021.101484] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
4
|
Liu M, Wang B, Li P, Liu X, Li Y. Sequentially bridging anionic addition and ring-opening polymerization by cooperative organocatalysis: Well-defined block copolymers from methacrylates and cyclic esters. Polym Chem 2022. [DOI: 10.1039/d2py00339b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalytic sequential block copolymerization of dissimilar monomers with distinct chemical characteristics is great challenging, usually involving the integration of different polymerization mechanism. In this contribution, we reported the synthesis of...
Collapse
|
5
|
Yıldırım A, Kaya Y, Göker M. Screening of simple carbohydrates as a renewable organocatalyst for the efficient construction of 1,3-benzoxazine scaffold. Carbohydr Res 2021; 510:108458. [PMID: 34634551 DOI: 10.1016/j.carres.2021.108458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 11/25/2022]
Abstract
A convenient protocol for the two component preparation of 1,3-benzoxazines by using several protected and unprotected carbohydrate molecules as organocatalysts have been developed which is broadly applicable to condensation reaction between variety of Mannich bases and paraformaldehyde. This study revealed that fructose have much higher catalytic activity than the other carbohydrates and can be an alternative to metal-containing catalysts as a green renewable organocatalyst for efficient and rapid construction of 1,3-benzoxazine skeleton. In this context, 21 benzoxazine compounds were successfully synthesized and spectral characterizations of these compounds were carried out by spectroscopic methods and elemental analysis. Furthermore, density functional theory (DFT) calculations have been performed to study the detailed mechanism of organocatalyst assisted synthesis of the benzoxazine monomers. The results obtained from these calculations showed that the more realistic reaction pathway involves formation of a phenolate based intermediate which loses a water molecule to form benzenaminium ion. Subsequently, this ion provides the formation of the corresponding benzoxazines with good yields through the intramolecular ring closure step.
Collapse
Affiliation(s)
- Ayhan Yıldırım
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey.
| | - Yunus Kaya
- Department of Chemistry, Faculty of Natural Sciences, Architecture and Engineering, Bursa Technical University, Bursa, 16310, Turkey
| | - Mustafa Göker
- Department of Chemistry, Faculty of Arts and Sciences, Bursa Uludağ University, P. O. Box 16059, Bursa, Turkey
| |
Collapse
|
6
|
Roberts JM, Belowich ME, Peterson TH, Bellinger E, Syverud K, Laitar DS, Sidle T. Homoconjugated Acids as Low Cyclosiloxane-Producing Silanol Polycondensation Catalysts. ACS OMEGA 2020; 5:24954-24963. [PMID: 33015515 PMCID: PMC7528505 DOI: 10.1021/acsomega.0c03883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
Polycondensation of α,ω-disilanols is a foundational technology for silicones producers. Commercially, this process is carried out with strong Brønsted acids and bases, which generates cyclosiloxane byproducts. Homoconjugated acids (a 2:1 complex of acid:base or a 1:1 complex of acid:salt), a seldom used class of silanol polycondensation catalysts, were evaluated for their ability to polymerize α,ω-disilanols while forming low levels of cyclosiloxane byproducts. Homoconjugated acid catalysts were highly active for silanol polycondensation, even when made from relatively mild acids such as acetic acid. Both the acid and base (or cation) component of the homoconjugated species was important for activity and avoiding cyclosiloxane byproduct formation. Stronger acids and bases were found to positively affect reactivity, and the pK a of the acid was found to correlate with cyclosiloxane byproduct formation. The individual components of the homoconjugated species (the acid and base) were ineffective as catalysts by themselves, and compositions with fewer than 2 mol of acid to 1 mol of base were much less reactive. Homoconjugated trifluoroacetic acid tetramethylguanidinium and tetrabutylphosphonium complexes were found to be privileged catalysts, able to give high-molecular-weight siloxanes (M n > 60 kDa) while generating less than 100 ppm of octamethylcyclotetrasiloxane byproduct. Finally, a mechanism has been proposed where silanols are electrophilically and nucleophilically activated by the homoconjugated species, leading to silanol polycondensation.
Collapse
Affiliation(s)
- John M. Roberts
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| | | | - Thomas H. Peterson
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| | - Edward Bellinger
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| | - Karin Syverud
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| | - David S. Laitar
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| | - Tobias Sidle
- Dow Inc., Core R&D, 633 Washington, Midland, Michigan 48667, United States
| |
Collapse
|
7
|
Mundil R, Kayser F, Favrelle-Huret A, Stoclet G, Zinck P. Organocatalytic sequential ring-opening polymerization of a cyclic ester and anionic polymerization of a vinyl monomer. Chem Commun (Camb) 2020; 56:8067-8070. [PMID: 32542254 DOI: 10.1039/d0cc02906h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalysis has provided new tools for making block copolymers, in particular active species able to polymerize monomers of different chemical nature such as cyclic esters, cyclic carbonates and epoxides. We report herein the first example of an organocatalytic active species able to polymerize sequentially a cyclic ester, ε-decalactone, and a vinyl monomer, methyl methacrylate. The resulting block copolymer shows the properties of thermoplastic elastomers.
Collapse
Affiliation(s)
- Robert Mundil
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59650 Villeneuve d'Ascq, France.
| | - Franck Kayser
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59650 Villeneuve d'Ascq, France.
| | - Audrey Favrelle-Huret
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59650 Villeneuve d'Ascq, France.
| | - Grégory Stoclet
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France
| | - Philippe Zinck
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59650 Villeneuve d'Ascq, France.
| |
Collapse
|
8
|
Ghosh S, Glöckler E, Wölper C, Tjaberings A, Gröschel AH, Schulz S. Heteroleptic β-Ketoiminate Magnesium Catalysts for the Ring-Opening Polymerization of Lactide. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00168] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Swarup Ghosh
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Eduard Glöckler
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Christoph Wölper
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Alexander Tjaberings
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - André H. Gröschel
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - Stephan Schulz
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| |
Collapse
|
9
|
Wang H, Yao Z, Li Z, Zhu Y, Zhang C, Luo Z, Guo T, Gao Y, Zhang L, Guo K. Biocompatible and low-cost pyridinium halides catalysts promoted ring-opening polymerizations of cyclic esters in bulk. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109570] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
10
|
Adoumaz I, Boutriouia EH, Beniazza R, Qayouh H, El Kadib A, Khoukh A, Save M, Lahcini M. Phosphorus pentoxide as a cost-effective, metal-free catalyst for ring opening polymerization of ε-caprolactone. RSC Adv 2020; 10:23498-23502. [PMID: 35520329 PMCID: PMC9054909 DOI: 10.1039/d0ra04251j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/13/2020] [Indexed: 01/14/2023] Open
Abstract
The ring-opening polymerization (ROP) of ε-caprolactone (ε-CL) using phosphorus pentoxide (P2O5) as a metal-free catalyst and isopropanol (iPrOH) as initiator resulted in the preparation of poly(ε-caprolactone) with narrow weight distribution.
Collapse
Affiliation(s)
- Ismail Adoumaz
- IMED-Lab
- Cadi Ayyad University
- Faculté des Sciences et Techniques Gueliz
- 40000 Marrakech
- Morocco
| | - El Hassan Boutriouia
- IMED-Lab
- Cadi Ayyad University
- Faculté des Sciences et Techniques Gueliz
- 40000 Marrakech
- Morocco
| | | | - Hicham Qayouh
- IMED-Lab
- Cadi Ayyad University
- Faculté des Sciences et Techniques Gueliz
- 40000 Marrakech
- Morocco
| | - Abdelkrim El Kadib
- Euro-Med Research Center
- Engineering Division
- Euro-Mediterranean University of Fes (UEMF)
- Fez
- Morocco
| | - Abdel Khoukh
- CNRS
- University Pau & Pays Adour
- E2S UPPA
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux
- IPREM
| | - Maud Save
- CNRS
- University Pau & Pays Adour
- E2S UPPA
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux
- IPREM
| | - Mohammed Lahcini
- IMED-Lab
- Cadi Ayyad University
- Faculté des Sciences et Techniques Gueliz
- 40000 Marrakech
- Morocco
| |
Collapse
|
11
|
Ghosh S, Schäfer PM, Dittrich D, Scheiper C, Steiniger P, Fink G, Ksiazkiewicz AN, Tjaberings A, Wölper C, Gröschel AH, Pich A, Herres‐Pawlis S, Schulz S. Heterolepic β-Ketoiminate Zinc Phenoxide Complexes as Efficient Catalysts for the Ring Opening Polymerization of Lactide. ChemistryOpen 2019; 8:951-960. [PMID: 31338277 PMCID: PMC6625107 DOI: 10.1002/open.201900203] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Indexed: 11/25/2022] Open
Abstract
Zinc phenoxide complexes L1ZnOAr 1-4 (L1=Me2NC2H4NC(Me)CHC(Me)O) and L2ZnOAr 5-8 (L2=Me2NC3H6NC(Me)CHC(Me)O) with donor-functionalized β-ketoiminate ligands (L1/2) and OAr substituents (Ar=Ph 1, 5; 2,6-Me2-C6H3 2, 6; 3,5-Me2-C6H3 3, 7; 4-Bu-C6H4 4, 8) with tuneable electronic and steric properties were synthesized and characterized. 1-8 adopt binuclear structures in the solid state except for 5, while they are monomeric in CDCl3 solution. 1-8 are active catalysts for the ring opening polymerization (ROP) of lactide (LA) in CH2Cl2 at ambient temperature and the catalytic activity is controlled by the electronic and steric properties of the OAr substituent, yielding polymers with high average molecular weight (M n) and moderately controlled molecular weight distribution (MWDs). 1 and 5 showed a living polymerization character and kinetic studies on the ROP of L-LA with 1 and 5 proved first order dependencies on the monomer concentration. Homonuclear decoupled 1H-NMR analyses of polylactic acid (PLA) formed with rac-LA proved isotactic enrichment of the PLA microstructure.
Collapse
Affiliation(s)
- Swarup Ghosh
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| | - Pascal M. Schäfer
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Dennis Dittrich
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| | - Christoph Scheiper
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| | - Phillip Steiniger
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| | - Gerhard Fink
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Agnieszka N. Ksiazkiewicz
- Institute of Technical and Macromolecular ChemistryRWTH Aachen UniversityWorringerweg 252074AachenGermany
- DWI – Leibniz Institute for Interactive Materials e. V.Forckenbeckstraße 5042074AachenGermany
| | - Alexander Tjaberings
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) NanoEnergieTechnikZentrumCarl-Benz-Str. 19947057Duisburg
| | - Christoph Wölper
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| | - André H. Gröschel
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE) NanoEnergieTechnikZentrumCarl-Benz-Str. 19947057Duisburg
| | - Andrij Pich
- Institute of Technical and Macromolecular ChemistryRWTH Aachen UniversityWorringerweg 252074AachenGermany
- DWI – Leibniz Institute for Interactive Materials e. V.Forckenbeckstraße 5042074AachenGermany
- Aachen Maastricht Institute for Biobased Materials (AMIBM)Maastricht University, Brightlands Chemelot CampusUrmonderbaan 226167RD GeleenThe Netherlands
| | - Sonja Herres‐Pawlis
- Institute of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Stephan Schulz
- Faculty of ChemistryUniversity of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE)Universitätsstr. 7, S07 S03 C30D-45141Essen
| |
Collapse
|
12
|
|
13
|
|
14
|
Liu Y, Wang X, Li Z, Wei F, Zhu H, Dong H, Chen S, Sun H, Yang K, Guo K. A switch from anionic to bifunctional H-bonding catalyzed ring-opening polymerizations towards polyether–polyester diblock copolymers. Polym Chem 2018. [DOI: 10.1039/c7py01842h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A switch of an anionic ROP of epoxides into a bifunctional H-bonding ROP of cyclic esters paved a new avenue to one-pot, sequential, and block copolymerizations to previously rare polyether-block-polyester copolymers.
Collapse
|
15
|
Xu J, Liu J, Li Z, Xu S, Wang H, Guo T, Gao Y, Zhang L, Zhang C, Guo K. Opposite-charge repulsive cation and anion pair cooperative organocatalysis in ring-opening polymerization. Polym Chem 2018. [DOI: 10.1039/c8py00338f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new strained ion pair catalysis was proposed in ring-opening polymerization.
Collapse
Affiliation(s)
- Jiaxi Xu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Jingjing Liu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Zhenjiang Li
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
| | - Songquan Xu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Haixin Wang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Tianfo Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Yu Gao
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Lei Zhang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Chan Zhang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
| |
Collapse
|
16
|
Chen S, Liu Y, Li Z, Wang X, Dong H, Sun H, Yang K, Gebru H, Guo K. H-bonding binary organocatalysis promoted amine-initiated ring-opening polymerizations of lactide from polysarcosine to diblock copolymers. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.10.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
|
18
|
Specklin D, Hild F, Chen L, Thévenin L, Munch M, Dumas F, Le Bideau F, Dagorne S. Bifunctional Squaramides as Organocatalysts for Lactide Polymerization: Catalytic Performance and Comparison with Monofunctional Analogues. ChemCatChem 2017. [DOI: 10.1002/cctc.201700272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- David Specklin
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
| | - Frédéric Hild
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
| | - Li Chen
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
- BioCIS, Univ. Paris-Sud; CNRS; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Lucas Thévenin
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
| | - Maxime Munch
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
| | - Françoise Dumas
- BioCIS, Univ. Paris-Sud; CNRS; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Franck Le Bideau
- BioCIS, Univ. Paris-Sud; CNRS; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg; CNRS; Université de Strasbourg; 1 rue Blaise Pascal 67000 Strasbourg France
| |
Collapse
|
19
|
Liu J, Xu J, Li Z, Xu S, Wang X, Wang H, Guo T, Gao Y, Zhang L, Guo K. Squaramide and amine binary H-bond organocatalysis in polymerizations of cyclic carbonates, lactones, and lactides. Polym Chem 2017. [DOI: 10.1039/c7py01671a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Multiple combinations of six squaramides and eight amines as co-catalysts were success in ROPs of cyclic monomers by H-bond donor and acceptor binary catalysis that established a general protocol.
Collapse
|
20
|
Sun H, Xu S, Li Z, Xu J, Liu J, Wang X, Wang H, Dong H, Liu Y, Guo K. A preorganized dual H-bond donor promotes benzoic acid active in the polymerization of δ-valerolactone. Polym Chem 2017. [DOI: 10.1039/c7py01192j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enzyme-mimetic model follows squalene hopene cyclase is success in catalysis of ROP of δ-valerolactone in solution at room temperature by a carboxylic “strong” acid.
Collapse
|
21
|
Catalytic Systems for the Production of Poly(lactic acid). SYNTHESIS, STRUCTURE AND PROPERTIES OF POLY(LACTIC ACID) 2017. [DOI: 10.1007/12_2017_20] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
22
|
Wang X, Liu J, Xu S, Xu J, Pan X, Liu J, Cui S, Li Z, Guo K. Traceless switch organocatalysis enables multiblock ring-opening copolymerizations of lactones, carbonates, and lactides: by a one plus one approach in one pot. Polym Chem 2016. [DOI: 10.1039/c6py01107a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A switch of organocatalysis from cationic to base/conjugate-acid bifunctional mechanisms made ring-opening copolymerizations of lactones/carbonates to lactides success.
Collapse
Affiliation(s)
- Xin Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jiaqi Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Songquan Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jiaxi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Xianfu Pan
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jingjing Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Saide Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Zhenjiang Li
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Kai Guo
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| |
Collapse
|
23
|
Chuang WJ, Huang YT, Chen YH, Lin YS, Lu WY, Lai YC, Chiang MY, Hsu SCN, Chen HY. Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of l-lactide. RSC Adv 2016. [DOI: 10.1039/c6ra00373g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Na complexes bearing ketiminate ligands revealed the greater catalytic activity and polymer controllability than that of Na complexes bearing Schiff base ligands.
Collapse
Affiliation(s)
- Wan-Jung Chuang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yen-Tzu Huang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yu-Hsieh Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yu-Shan Lin
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Wei-Yi Lu
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Michael Y. Chiang
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
- Department of Chemistry
| | - Sodio C. N. Hsu
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry
- Kaohsiung Medical University
- Kaohsiung 80708
- Republic of China
| |
Collapse
|
24
|
Dai Z, Cui Y, Chen C, Wu J. Photoswitchable ring-opening polymerization of lactide catalyzed by azobenzene-based thiourea. Chem Commun (Camb) 2016; 52:8826-9. [DOI: 10.1039/c6cc04090j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An azobenzene-based thiourea compound 1 as a catalyst was successfully used in the ring-opening polymerization of rac-lactide. The reactivity of a catalytic polymerization system using photoresponsive azobenzene-based thiourea/PMDETA as a catalyst could be switched between slow and fast states by alternating exposure to UV and ambient light.
Collapse
Affiliation(s)
- Zhongran Dai
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou 730000
- People's Republic of China
| | - Yaqin Cui
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou 730000
- People's Republic of China
| | - Changjuan Chen
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou 730000
- People's Republic of China
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- College of Chemistry and Chemical Engineering
- Lanzhou 730000
- People's Republic of China
| |
Collapse
|