1
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Buravchenko GI, Scherbakov AM, Krymov SK, Salnikova DI, Zatonsky GV, Schols D, Vullo D, Supuran CT, Shchekotikhin AE. Synthesis and evaluation of sulfonamide derivatives of quinoxaline 1,4-dioxides as carbonic anhydrase inhibitors. RSC Adv 2024; 14:23257-23272. [PMID: 39045402 PMCID: PMC11265520 DOI: 10.1039/d4ra04548c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 07/12/2024] [Indexed: 07/25/2024] Open
Abstract
A series of sulfonamide-derived quinoxaline 1,4-dioxides were synthesized and evaluated as inhibitors of carbonic anhydrases (CA) with antiproliferative potency. Overall, the synthesized compounds demonstrated good inhibitory activity against four CA isoforms. Compound 7g exhibited favorable potency in inhibiting a CA IX isozyme with a K i value of 42.2 nM compared to the reference AAZ (K i = 25.7 nM). Nevertheless, most of the synthesized compounds have their highest activity against CA I and CA II isoforms over CA IX and CA XII. A molecular modeling study was used for an estimation of the binding mode of the selected ligand 7g in the active site of CA IX. The most active compounds (7b, 7f, 7h, and 18) exhibited significant antiproliferative activity against MCF-7, Capan-1, DND-41, HL60, and Z138 cell lines, with IC50 values in low micromolar concentrations. Moreover, derivatives 7a, 7e, and 8g showed similar hypoxic cytotoxic activity and selectivity compared to tirapazamine (TPZ) against adenocarcinoma cells MCF-7. The structure-activity relationships analysis revealed that the presence of a halogen atom or a sulfonamide group as substituents in the phenyl ring of quinoxaline-2-carbonitrile 1,4-dioxides was favorable for overall cytotoxicity against most of the tested cancer cell lines. Additionally, the presence of a carbonitrile fragment in position 2 of the heterocycle also had a positive effect on the antitumor properties of such derivatives against the majority of cell lines. The most potent derivative, 3-trifluoromethylquinoxaline 1,4-dioxide 7h, demonstrated higher or close antiproliferative activity compared to the reference agents, such as doxorubicin, and etoposide, with an IC50 range of 1.3-2.1 μM. Analysis of the obtained results revealed important patterns in the structure-activity relationship. Moreover, these findings highlight the potential of selected lead sulfonamides on the quinoxaline 1,4-dioxide scaffold for further in-depth evaluation and development of chemotherapeutic agents targeting carbonic anhydrases.
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Affiliation(s)
- Galina I Buravchenko
- Gause Institute of New Antibiotics 11 B. Pirogovskaya Street Moscow 119021 Russia
| | - Alexander M Scherbakov
- Department of Experimental Tumor Biology, Institute of Carcinogenesis, Blokhin N.N. National Medical Research Center of Oncology Kashirskoe sh. 24 115522 Moscow Russia
| | - Stepan K Krymov
- Gause Institute of New Antibiotics 11 B. Pirogovskaya Street Moscow 119021 Russia
| | - Diana I Salnikova
- Department of Experimental Tumor Biology, Institute of Carcinogenesis, Blokhin N.N. National Medical Research Center of Oncology Kashirskoe sh. 24 115522 Moscow Russia
| | - George V Zatonsky
- Gause Institute of New Antibiotics 11 B. Pirogovskaya Street Moscow 119021 Russia
| | - Dominique Schols
- Rega Institute for Medical Research, KU Leuven 3000 Leuven Belgium
| | - Daniela Vullo
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence Florence Italy
| | - Claudiu T Supuran
- Department of NEUROFARBA, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence Florence Italy
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2
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Franzen JH, Wilm LFB, Rotering P, Wurst K, Seidl M, Dielmann F. Electron-rich pyridines with para-N-heterocyclic imine substituents: ligand properties and coordination to CO 2, SO 2, BCl 3 and Pd II complexes. Dalton Trans 2024; 53:11876-11883. [PMID: 38953467 DOI: 10.1039/d4dt01399a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Electron-rich pyridines with π donor groups at the para position play an important role as nucleophiles in organocatalysis, but their ligand properties and utilization in coordination chemistry have received little attention. Herein, we report the synthesis of two electron-rich pyridines 1 and 2 bearing N-heterocyclic imine groups at the para position and explore their coordination chemistry. Experimental and computational methods were used to assess the donor ability of the new pyridines showing that they are stronger donors than aminopyridines and guanidinyl pyridines, and that the nature of the N-heterocyclic backbone has a strong influence on the pyridine donor strength. Coordination compounds with Lewis acids including the CO2, SO2, BCl3 and PdII ions were synthesized and characterized. Despite the ambident character of the new pyridines, coordination preferentially occurs at the pyridine-N atom. Methyl transfer experiments reveal that 1 and 2 can act as demethylation reagents.
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Affiliation(s)
- Jonas H Franzen
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Lukas F B Wilm
- Institut für Anorganische und Analytische Chemie, Universität Münster Corrensstrasse 30, 48149 Münster, Germany
| | - Philipp Rotering
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Michael Seidl
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Fabian Dielmann
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Leopold-Franzens-Universität Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
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3
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Chen D, Xu L, Ren B, Wang Z, Liu C. Triflylpyridinium as Coupling Reagent for Rapid Amide and Ester Synthesis. Org Lett 2023. [PMID: 37290965 DOI: 10.1021/acs.orglett.3c01598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An effective method has been developed to facilitate the synthesis of amides and esters at ambient temperature within 5 min, in which a stable and easily accessible triflylpyridinium reagent is used. Remarkably, this method not only has a wide range of substrate compatibility but also could realize the scalable synthesis of peptide and ester via a continuous flow process. Moreover, excellent chirality retentions are presented during activation of carboxylic acid.
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Affiliation(s)
- Du Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liangxuan Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bowen Ren
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zian Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Liu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Magano J. Large-Scale Amidations in Process Chemistry: Practical Considerations for Reagent Selection and Reaction Execution. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Javier Magano
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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5
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Schulze JS, Brand RD, Hering JG, Riegger LM, Schreiner PR, Smarsly BM. DMAP immobilized on porous silica particles and monoliths for the esterification of phenylethanol in continuous flow. ChemCatChem 2022. [DOI: 10.1002/cctc.202101845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Julia S. Schulze
- Justus Liebig Universitat Giessen Institute of Physical Chemistry 35392 Giessen GERMANY
| | - Raoul D. Brand
- Justus Liebig Universitat Giessen Institute of Physical Chemistry 35392 Giessen GERMANY
| | | | - Luise M. Riegger
- Justus Liebig Universitat Giessen Institute of Physical Chemistry 35392 Giessen GERMANY
| | - Peter R. Schreiner
- Justus Liebig Universitat Giessen Institute of Organic Chemistry 35392 Giessen GERMANY
| | - Bernd M. Smarsly
- Physikalisch-Chemisches Institut Justus-Liebig-Universität Gießen Heinrich Buff Ring 17 35392 Gießen GERMANY
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6
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Zhang RZ, Zhang RX, Wang S, Xu C, Guan W, Wang M. An N-Trifluoromethylation/Cyclization Strategy for Accessing Diverse N-Trifluoromethyl Azoles from Nitriles and 1,3-Dipoles. Angew Chem Int Ed Engl 2022; 61:e202110749. [PMID: 34704326 DOI: 10.1002/anie.202110749] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/27/2021] [Indexed: 01/14/2023]
Abstract
N-Trifluoromethyl azoles are valuable targets in medicinal chemistry, but their synthesis is challenging. Classical preparation of N-CF3 azoles relies on the functional group interconversions but suffers from tedious N-pre-functionalization and unfriendly agents. Introduction of the CF3 onto the nitrogen of heterocycles provides a direct route to such motifs, but the N-trifluoromethylation remains underdeveloped. Reported here is an alternative and scalable cyclization strategy based on NCF3 -containing synthons for constructing N-CF3 azoles. The approach involves the N-trifluoromethylation of nitriles followed by a [3+2] cyclization between resulting N-CF3 nitrilium derivatives and 1,3-dipoles. PhICF3 Cl was an effective CF3 source for the transformation. As a result, a generic platform is established to divergently synthesize N-trifluoromethylated tetrazoles, imidazoles, and 1,2,3-triazoles by using sodium azide, activated methylene isocyanides, and diazo compounds as dipoles.
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Affiliation(s)
- Ru Zhong Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
| | - Ru Xue Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
| | - Shuang Wang
- Institute of Functional of Material, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
| | - Cong Xu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
| | - Wei Guan
- Institute of Functional of Material, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
| | - Mang Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, College of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, China
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7
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Zhang RZ, Zhang RX, Wang S, Xu C, Guan W, Wang M. An
N
‐Trifluoromethylation/Cyclization Strategy for Accessing Diverse
N
‐Trifluoromethyl Azoles from Nitriles and 1,3‐Dipoles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202110749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ru Zhong Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
| | - Ru Xue Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
| | - Shuang Wang
- Institute of Functional of Material College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
| | - Cong Xu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
| | - Wei Guan
- Institute of Functional of Material College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
| | - Mang Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis College of Chemistry Northeast Normal University 5268 Renmin Street Changchun 130024 China
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8
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Bernardo O, González‐Pelayo S, López LA. Synthesis and Applications of Ferrocene‐Fused Nitrogen Heterocycles. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Olaya Bernardo
- Departamento de Química Orgánica e Inorgánica Instituto Universitario de Química Organometálica “Enrique Moles” Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Oviedo Julián Clavería 8 33006- Oviedo Spain
| | - Silvia González‐Pelayo
- Laboratorio de Química Orgánica y Farmacéutica Departamento de Ciencias Farmacéuticas Facultad de Farmacia Universidad de Salamanca Campus Miguel de Unamuno 37007- Salamanca Spain
| | - Luis A. López
- Departamento de Química Orgánica e Inorgánica Instituto Universitario de Química Organometálica “Enrique Moles” Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Oviedo Julián Clavería 8 33006- Oviedo Spain
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9
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Richard NA, Charlton GD, Dyker CA. Enhancing catalytic activity of pyridines via para-iminophosphorano substituents. Org Biomol Chem 2021; 19:9167-9171. [PMID: 34664050 DOI: 10.1039/d1ob01630j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four pyridines decorated with π-donating iminophosphorano substituents (R3PN-) in the 4-position were assessed as acylation catalysts. These catalysts display high sensitivity to the groups at phosphorus, with activities that are well correlated to the corresponding Hammett-type substituent constants (σp+), and can achieve superior activity over the most active dialkylamino-substituted pyridines. Iminophosphorano-substituted pyridines represent an easily accessible, tunable, and highly active class of nucleophilic organocatalysts.
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Affiliation(s)
- Nicholas A Richard
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
| | - Grant D Charlton
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
| | - C Adam Dyker
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.
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10
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Conjugation of 4-(dimethylamino)pyridine to primary amines in aqueous buffer solutions using an N-hydroxysuccinimide ester reagent. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Selective Synthesis of N-Acylnortropane Derivatives in Palladium-Catalysed Aminocarbonylation. Molecules 2021; 26:molecules26061813. [PMID: 33807018 PMCID: PMC8004868 DOI: 10.3390/molecules26061813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/13/2021] [Accepted: 03/18/2021] [Indexed: 12/04/2022] Open
Abstract
The aminocarbonylation of various alkenyl and (hetero)aryl iodides was carried out using tropane-based amines of biological importance, such as 8-azabicyclo[3.2.1]octan-3-one (nortropinone) and 3α-hydroxy-8-azabicyclo[3.2.1]octane (nortropine) as N-nucleophile. Using iodoalkenes, the two nucleophiles were selectively converted to the corresponding amide in the presence of Pd(OAc)2/2 PPh3 catalysts. In the presence of several iodo(hetero)arenes, the application of the bidentate Xantphos was necessary to produce the target compounds selectively. The new carboxamides of varied structure, formed in palladium-catalyzed aminocarbonylation reactions, were isolated and fully characterized. In this way, a novel synthetic method has been developed for the producing of N-acylnortropane derivatives of biological importance.
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12
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Jiang H, Hu Z, Gan C, Sun B, Kong S, Bian F. Visible-light induced one-pot hydrogenation and amidation of nitroaromatics with carboxylic acids over 2D MXene-derived Pt/N-TiO2/Ti3C2. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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13
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Xiang S, Li Y, Fan W, Jin J, Zhang W, Huang D. Copper(II)-Dioxygen Facilitated Activation of Nitromethane: Nitrogen Donors for the Synthesis of Substituted 2-Hydroxyimino-2-phenylacetonitriles and Phthalimides. Front Chem 2021; 8:622867. [PMID: 33585402 PMCID: PMC7878530 DOI: 10.3389/fchem.2020.622867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/18/2020] [Indexed: 11/20/2022] Open
Abstract
A simple and efficient method is explored for the synthesis of 2-hydroxyimino-2-phenylacetonitriles (2) and phthalimides (4), by using nitromethane as nitrogen donors. Both reactions are promoted by Cu(II) system with the participation of dioxygen as an oxidant. The scope of the method has been successfully demonstrated with a total of 51 examples. The flexible and diversified characteristics of reactions are introduced in terms of electronic effect, steric effect, position of substituted groups, and intramolecular charge transfer. Experimental studies suggest that the methyl nitrite could be a precursor in the path to the final products. A possible reaction mechanism is proposed, including the Cu(II)/O2-facilitated transformation of nitromethane to methyl nitrite, the base-induced formation of 2-hydroxyimino-2-phenylacetonitriles, and the base-dioxygen-promoted formation of phthalimides.
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Affiliation(s)
- Shiqun Xiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yinghua Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
| | - Weibin Fan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jiang Jin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
| | - Wei Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
| | - Deguang Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
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14
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Genaev AM, Salnikov GE, Koltunov KY. Unusual temperature-sensitive protonation behaviour of 4-(dimethylamino)pyridine. Org Biomol Chem 2021; 19:866-872. [DOI: 10.1039/d0ob01893g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An unusually strong impact of temperature on the protonation degree of DMAP in strong acid solutions has been found.
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Affiliation(s)
| | | | - Konstantin Yu. Koltunov
- Boreskov Institute of Catalysis
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk 630090
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15
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Song G, Jeong KS. Aromatic Helical Foldamers as Nucleophilic Catalysts for the Regioselective Acetylation of Octyl β-d-Glucopyranoside. Chempluschem 2020; 85:2475-2481. [PMID: 33206472 DOI: 10.1002/cplu.202000685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/03/2020] [Indexed: 12/31/2022]
Abstract
Two indolocarbazole-naphthyridine foldamers 2 and 3 that fold into helical conformations were prepared. The 4-(N,N-dimethylamino)pyridine (DMAP) moiety was introduced at one end of the foldamer strands to develop foldamer-based catalysts for the site-selective acylation of polyols. These foldamers adopt helical conformations containing internal cavities capable of binding octyl β-d-glucopyranoside. The association constants were determined to be 1.9 (±0.1)×105 M-1 for 2 and 2.1 (±0.1)×105 M-1 for 3 in CH2 Cl2 at 25 °C. In the presence of DMAP, 2 or 3 as the catalysts, octyl β-d-glucopyranoside was subjected to acetylation under identical reaction conditions. The DMAP-catalysed reaction afforded the random distribution of the monoacetylates (6-OAc : 4-OAc : 3-OAc : 2-OAc=33 : 24 : 41 : 2). In contrast, foldamers 2 and 3 led to the predominant formation of 6-OAc. The relative distributions were estimated to be 6-OAc : 4-OAc : 3-OAc=88 : 4 : 6 : ∼0 with 2 and 6-OAc : 4-OAc : 3-OAc : 2-OAc=90 : 3 : 6 : 1 with 3.
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Affiliation(s)
- Geunmoo Song
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
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16
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Shao W, Liu C, Yu T, Xiong Y, Hong Z, Xie Q. Constructing Positively Charged Thin-Film Nanocomposite Nanofiltration Membranes with Enhanced Performance. Polymers (Basel) 2020; 12:E2526. [PMID: 33137988 PMCID: PMC7692056 DOI: 10.3390/polym12112526] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/21/2020] [Accepted: 10/26/2020] [Indexed: 11/17/2022] Open
Abstract
Using polyethylenimine (PEI) as the aqueous reactive monomers, a positively charged thin-film nanocomposite (TFN) nanofiltration (NF) membrane with enhanced performance was developed by successfully incorporating graphene oxide (GO) into the active layer. The effects of GO concentrations on the surface roughness, water contact angle, water flux, salt rejection, heavy metal removals, antifouling property, and chlorine resistance of the TFN membranes were evaluated in depth. The addition of 20 ppm GO facilitated the formation of thin, smooth, and hydrophilic nanocomposite active layers. Thus, the TFN-PEI-GO-20 membrane showed the optimal water flux of 70.3 L·m-2·h-1 without a loss of salt rejection, which was 36.8% higher than the thin-film composite (TFC) blank membrane. More importantly, owing to the positively charged surfaces, both the TFC-PEI-blank and TFN-PEI-GO membranes exhibited excellent rejections toward various heavy metal ions including Zn2+, Cd2+, Cu2+, Ni2+, and Pb2+. Additionally, compared with the negatively charged polypiperazine amide NF membrane, both the TFC-PEI-blank and TFN-PEI-GO-20 membranes demonstrated superior antifouling performance toward the cationic surfactants and basic protein due to their hydrophilic, smooth, and positively charged surface. Moreover, the TFN-PEI-GO membranes presented the improved chlorine resistances with the increasing GO concentration.
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Affiliation(s)
- Wenyao Shao
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; (W.S.); (C.L.)
| | - Chenran Liu
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (C.L.); (T.Y.); (Z.H.)
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; (W.S.); (C.L.)
| | - Tong Yu
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (C.L.); (T.Y.); (Z.H.)
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361005, China; (T.Y.); (Z.H.)
| | - Ying Xiong
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Zhuan Hong
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (C.L.); (T.Y.); (Z.H.)
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361005, China; (T.Y.); (Z.H.)
| | - Quanling Xie
- Technology Innovation Center for Exploitation of Marine Biological Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China; (C.L.); (T.Y.); (Z.H.)
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen 361005, China; (T.Y.); (Z.H.)
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17
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Thavornpradit S, Killough JM, Bergbreiter DE. Minimizing solvent waste in catalytic reactions in highly recyclable hydrocarbon solvents. Org Biomol Chem 2020; 18:4248-4256. [PMID: 32436926 DOI: 10.1039/d0ob00734j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes chemistry using organocatalysts in hydrocarbon solvents that minimizes solvent waste by using inexpensive, non-volatile, relatively inflammable, and easily recyclable poly(α-olefin)s (PAOs) as hydrocarbon solvents. These studies show that when substrates have limited solubility in PAO solvents, this issue can be addressed by adding a small amount of a cosolvent. Kinetic studies were also carried out and show that reactions carried out in PAOs are kinetically comparable to reactions in conventional non-recyclable hydrocarbon solvents. A range of strategies that separate and isolate products from reactions in PAOs using a polyisobutylene (PIB)-supported DMAP catalyst have been studied using four different catalytic reactions. In the most general procedure, the PAO phase containing a PIB-bound catalyst is separated from products by low energy liquid/liquid gravity separation. This can be accomplished using a minimal amount of a polar solvent. In another example, the product's low solubility leads to it precipitating during the reaction. In this case, a simple filtration recycles the PAO and a PIB-bound DMAP catalyst. We have demonstrated that the PAO phase containing a PIB bound DMAP catalyst can be recycled for at least 10 cycles without loss of activity. Our studies further showed that leaching of the PAO phase into polar solvents was orders of magnitude less than conventional hydrocarbon solvents such as heptane. The result is that the overall solvent waste generation is lower than for the same reaction carried out in conventional solvents.
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Affiliation(s)
- Sopida Thavornpradit
- Department of Chemistry, Texas A&M University, P.O. Box 3012, College Station, Texas 77842-3012, USA.
| | - James M Killough
- Department of Chemistry, Texas A&M University, P.O. Box 3012, College Station, Texas 77842-3012, USA.
| | - David E Bergbreiter
- Department of Chemistry, Texas A&M University, P.O. Box 3012, College Station, Texas 77842-3012, USA.
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18
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Shokoohian M, Hazeri N, Maghsoodlou M, Lashkari M. Multi-component Reaction Synthesis of 1,6-diamino-2-oxo-1,2,3,4-tetrahydropyridine-3,5-dicarbonitriles Using Ultrasonication and Dmap as Catalyst. CHEMISTRY JOURNAL OF MOLDOVA 2019. [DOI: 10.19261/cjm.2019.639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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19
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Prabakaran P, Muthiah PT, Nallu M, Sathiskumar V, Bocelli G, Righi L. Hydrogen-Bonded (H2O·X)2 [X=Cl–, Br–] Clusters in 1-Phenacyl-4-(Dimethylamino)Pyridinium Halide Monohydrates. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823401103169658] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The synthesis, and X-ray crystal and molecular structures, of 1-phenacyl-4-(dimethylamino)pyridinium chloride and bromide monohydrates are described.
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Affiliation(s)
- P. Prabakaran
- Department of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, India
- RIKEN Tsukuba Institute, Tsukuba, Ibaraki 305–0074, Japan
| | - P. Thomas Muthiah
- Department of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, India
| | - M. Nallu
- Department of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, India
| | - V. Sathiskumar
- Department of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, India
| | - G. Bocelli
- CSSD-CNR, University of Parma, Viale delle Scienze, 43100 Parma, Italy
| | - L. Righi
- CSSD-CNR, University of Parma, Viale delle Scienze, 43100 Parma, Italy
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20
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Fa S, Zhao Y. Synthetic nanoparticles for selective hydrolysis of bacterial autoinducers in quorum sensing. Bioorg Med Chem Lett 2019; 29:978-981. [PMID: 30795855 DOI: 10.1016/j.bmcl.2019.02.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 02/07/2019] [Accepted: 02/14/2019] [Indexed: 12/22/2022]
Abstract
N-acyl homoserine lactones (AHLs) are signal molecules used by a large number of gram-negative bacteria in quorum sensing and their hydrolysis is known to inhibit biofilm formation. Micellar imprinting of AHL-like templates with catalytic functional monomers yielded water-soluble nanoparticles with AHL-shaped active site and nearby catalytic groups. Either Lewis acidic zinc ions or nucleophilic pyridyl ligands could be introduced through this strategy, yielding artificial enzymes for the hydrolysis of AHLs in a substrate-selective fashion.
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Affiliation(s)
- Shixin Fa
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111, USA
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111, USA.
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21
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An open-source approach to automation in organic synthesis: The flow chemical formation of benzamides using an inline liquid-liquid extraction system and a homemade 3-axis autosampling/product-collection device. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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22
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Lagueux-Tremblay PL, Fabrikant A, Arndtsen BA. Palladium-Catalyzed Carbonylation of Aryl Chlorides to Electrophilic Aroyl-DMAP Salts. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00757] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Alexander Fabrikant
- Department of Chemistry, McGill University, 801 Sherbrooke Street W. Montreal, Quebec H3A 0B8, Canada
| | - Bruce A. Arndtsen
- Department of Chemistry, McGill University, 801 Sherbrooke Street W. Montreal, Quebec H3A 0B8, Canada
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23
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Metal–organic frameworks as media for the catalytic degradation of chemical warfare agents. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.10.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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24
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Nosov RV, Yakimova LS, Stoikov II. Chemoselective acylation of monosubstituted thiacalix[4]arene with di-tert-butyl dicarbonate. RUSS J GEN CHEM+ 2017. [DOI: 10.1134/s1070363217090109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Toda Y, Sakamoto T, Komiyama Y, Kikuchi A, Suga H. A Phosphonium Ylide as an Ionic Nucleophilic Catalyst for Primary Hydroxyl Group Selective Acylation of Diols. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02281] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasunori Toda
- Department of Materials
Chemistry,
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Tomoyuki Sakamoto
- Department of Materials
Chemistry,
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Yutaka Komiyama
- Department of Materials
Chemistry,
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Ayaka Kikuchi
- Department of Materials
Chemistry,
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Hiroyuki Suga
- Department of Materials
Chemistry,
Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
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26
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Mao X, Wang S, Shang Y. A DFT study on the mechanism of the organocatalytic synthesis of a benzoxazine-substituted indolizine derivative. J Mol Model 2017; 23:177. [DOI: 10.1007/s00894-017-3328-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/27/2017] [Indexed: 10/19/2022]
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27
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Umehara A, Ueda H, Tokuyama H. Condensation of Carboxylic Acids with Non-Nucleophilic N-Heterocycles and Anilides Using Boc 2O. J Org Chem 2016; 81:11444-11453. [PMID: 27767302 DOI: 10.1021/acs.joc.6b02097] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel condensation reaction of carboxylic acids with various non-nucleophilic N-heterocycles and anilides was developed. The reaction proceeds in the presence of di-tert-butyl dicarbonate (Boc2O), catalytic 4-(dimethylamino)pyridine (DMAP), and 2,6-lutidine and is applicable to the acylation of a wide range of non-nucleophilic nitrogen compounds, including indoles, pyrroles, pyrazole, carbazole, lactams, oxazolidinones, and anilides with high functional group compatibility. The scope of indoles, carboxylic acids, and anilides was also studied.
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Affiliation(s)
- Atsushi Umehara
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hirofumi Ueda
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba 6-3, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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28
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Bhattacharjee S, Khan AT. One-pot three component synthesis of 3,5-disubstituted 2,6-dicyanoaniline derivatives using 4-dimethylaminopyridine (DMAP) as a catalyst. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Synthesis of 3-substituted carboxylate/carboxamide flavone derivatives from 4-hydroxycoumarin, β-nitrostyrene and alcohol/amine using multicomponent reaction. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Mommer S, Truong KN, Keul H, Möller M. An epoxy thiolactone on stage: four component reactions, synthesis of poly(thioether urethane)s and the respective hydrogels. Polym Chem 2016. [DOI: 10.1039/c6py00231e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An epoxy thiolactone was developed as a versatile platform for multicomponent reactions, the synthesis of poly(thioether urethane)s or hydrogels containing epoxy groups.
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Affiliation(s)
- Stefan Mommer
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University and DWI – Leibniz Institute for Interactive Materials
- 52056 Aachen
- Germany
| | - Khai-Nghi Truong
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Helmut Keul
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University and DWI – Leibniz Institute for Interactive Materials
- 52056 Aachen
- Germany
| | - Martin Möller
- Institute of Technical and Macromolecular Chemistry
- RWTH Aachen University and DWI – Leibniz Institute for Interactive Materials
- 52056 Aachen
- Germany
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31
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Quesnel JS, Fabrikant A, Arndtsen BA. A flexible approach to Pd-catalyzed carbonylations via aroyl dimethylaminopyridinium salts. Chem Sci 2015; 7:295-300. [PMID: 29861983 PMCID: PMC5952522 DOI: 10.1039/c5sc02949j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 09/30/2015] [Indexed: 11/23/2022] Open
Abstract
The palladium catalyzed carbonylation of aryl halides in the presence of DMAP can allow the generation of highly electrophilic aroylating agents: aroyl–DMAP salts.
4-Dimethylaminopyridine (DMAP) is shown to undergo Pd/PtBu3 catalyzed coupling with aryl halides and carbon monoxide to form electrophilic aroyl–DMAP salts. The reaction is easily scalable to prepare multigram quantities with low catalyst loadings, while the precipitation of these salts as they form leads to products with low impurities. These reagents rapidly react with a variety of nucleophiles, including those that contain potentially incompatible functional groups under standard carbonylative conditions.
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Affiliation(s)
- Jeffrey S Quesnel
- Department of Chemistry , McGill University , 801 Sherbrooke St. W. , Montreal , QC , Canada H3A 0B8 . ; ; Tel: +1-514-398-6999
| | - Alexander Fabrikant
- Department of Chemistry , McGill University , 801 Sherbrooke St. W. , Montreal , QC , Canada H3A 0B8 . ; ; Tel: +1-514-398-6999
| | - Bruce A Arndtsen
- Department of Chemistry , McGill University , 801 Sherbrooke St. W. , Montreal , QC , Canada H3A 0B8 . ; ; Tel: +1-514-398-6999
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32
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3-(4-Bromophenyl)-5-(4-hydroxyphenyl)isoxazole: a versatile, new molecular building block for side-chain liquid crystal oligomers and polymers. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1529-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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33
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Funder ED, Trads JB, Gothelf KV. Oxidative activation of dihydropyridine amides to reactive acyl donors. Org Biomol Chem 2015; 13:185-98. [PMID: 25358438 DOI: 10.1039/c4ob01931h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amides of 1,4-dihydropyridine (DHP) are activated by oxidation for acyl transfer to amines, alcohols and thiols. In the reduced form the DHP amide is stable towards reaction with amines at room temperature. However, upon oxidation with DDQ the acyl donor is activated via a proposed pyridinium intermediate. The activated intermediate reacts with various nucleophiles to give amides, esters, and thio-esters in moderate to high yields.
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Affiliation(s)
- Erik Daa Funder
- Danish National Research Foundation, Center for DNA Nanotechnology, Department of Chemistry and iNANO, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.
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34
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Okuno Y, Isomura S, Kamakura T, Sano F, Tamahori K, Goto T, Hayashida T, Kitagawa Y, Fukuhara A, Takeda K. Dimethylaminopyridine-supported graft polymer catalyst and its flow system. CHEMSUSCHEM 2015; 8:1711-1715. [PMID: 25855359 DOI: 10.1002/cssc.201500092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Indexed: 06/04/2023]
Abstract
A new heterogeneous organocatalyst, graft polymer supported dimethylaminopyridine (g-DMAP), is developed. This catalyst has a flexible structure and comprises DMAP anchored to the polyethylene-graft-polyacrylic acid (PE-g-PAA). It exhibits higher activity than DMAP supported on polystyrene cross-linked with divinylbenzene and can be recovered in batch mode acetylation. The activity and stability of this catalyst allow its application in continuous flow systems. Continuous acetylation proceeds with excellent conversion, and a turnover number of 560 can be achieved using g-DMAP. Parallel fixed bed reactors were used to scale up the synthesis of this continuous flow system. Eight parallel fixed bed reactors displayed excellent conversion.
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Affiliation(s)
- Yoshinori Okuno
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Shigeki Isomura
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Kamakura
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Fumiaki Sano
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Kaoru Tamahori
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Goto
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Takahiro Hayashida
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Yuuichi Kitagawa
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Ami Fukuhara
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan)
| | - Kazuyoshi Takeda
- Yokohama University of Pharmacy, Department of Medicinal Chemistry, 601 Matano-cho Totsuka-ku, Yokohama 245-0066 (Japan).
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35
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Amino acid chlorides: a journey from instability and racemization toward broader utility in organic synthesis including peptides and their mimetics. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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36
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Mesas-Sánchez L, Dinér P. A Mechanistic Investigation of the Kinetic Resolution of Secondary Aromatic Alcohols Using a Ferrocene-Based Planar Chiral 4-(Dimethylamino)pyridine Catalyst. Chemistry 2015; 21:5623-31. [DOI: 10.1002/chem.201405793] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Indexed: 11/12/2022]
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37
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Časar Z, Mesar T. A DMAP-Catalyzed Approach to the Industrial-Scale Preparation of N-6-Demethylated 9,10-Dihydrolysergic Acid Methyl Ester: A Key Cabergoline and Pergolide Precursor. Org Process Res Dev 2015. [DOI: 10.1021/op500394f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zdenko Časar
- API
Development, Sandoz Development Center Slovenia, Lek Pharmaceuticals d.d., Kolodvorska 27, 1234 Mengeš, Slovenia
- Faculty
of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Tomaž Mesar
- API
Development, Sandoz Development Center Slovenia, Lek Pharmaceuticals d.d., Kolodvorska 27, 1234 Mengeš, Slovenia
- API
Production, Lek Pharmaceuticals d.d., Kolodvorska 27, 1234 Mengeš, Slovenia
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38
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Zhang R, Sun Y, Qiao Y, Li J, Xie J. Serendipitous discovery of an efficient method for the synthesis of dimeric-RGD analogues using DMAP-photoirradiation. NEW J CHEM 2015. [DOI: 10.1039/c5nj01810b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe a novel disulfide reaction via UV/DMAP methodology for efficient construction of simple disulfides and structurally complex peptides.
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Affiliation(s)
- Ruiping Zhang
- Department of Radiology
- First Hospital
- Shanxi Medical University
- Taiyuan 030000
- China
| | - Yao Sun
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery
- Wuhan University School of Pharmaceutical Science
- Wuhan 430071
- China
| | - Ying Qiao
- Department of Radiology
- First Hospital
- Shanxi Medical University
- Taiyuan 030000
- China
| | - Jianding Li
- Department of Radiology
- First Hospital
- Shanxi Medical University
- Taiyuan 030000
- China
| | - Jun Xie
- Department of Molecular Biology
- Shanxi Medical University
- Taiyuan 030000
- China
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39
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Hu XX, Su YT, Ma YW, Zhan XQ, Zheng H, Jiang YB. A near infrared colorimetric and fluorometric probe for organophosphorus nerve agent mimics by intramolecular amidation. Chem Commun (Camb) 2015; 51:15118-21. [DOI: 10.1039/c5cc04630k] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A carboxylic acid group was activated by nerve agent mimics to conduct intramolecular amidation in heptamethine chromophore, leading to large red-shifts of both absorption and excitation wavelengths in the near infrared region.
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Affiliation(s)
- Xiao-Xiao Hu
- Department of Chemistry
- College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Physical Laboratory of Spectrochemical Analysis & Instrumentation
- Xiamen University
- Xiamen
- China
| | - Yue-Ting Su
- Department of Chemistry
- College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Physical Laboratory of Spectrochemical Analysis & Instrumentation
- Xiamen University
- Xiamen
- China
| | - Yun-Wei Ma
- Department of Chemistry
- College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Physical Laboratory of Spectrochemical Analysis & Instrumentation
- Xiamen University
- Xiamen
- China
| | - Xin-Qi Zhan
- Basic Medicine Department
- Medical College of Xiamen University
- Xiamen
- China
| | - Hong Zheng
- Department of Chemistry
- College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Physical Laboratory of Spectrochemical Analysis & Instrumentation
- Xiamen University
- Xiamen
- China
| | - Yun-Bao Jiang
- Department of Chemistry
- College of Chemistry and Chemical Engineering, and the MOE Key Laboratory of Physical Laboratory of Spectrochemical Analysis & Instrumentation
- Xiamen University
- Xiamen
- China
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40
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Roberts DA, Castilla AM, Ronson TK, Nitschke JR. Post-assembly Modification of Kinetically Metastable FeII2L3 Triple Helicates. J Am Chem Soc 2014; 136:8201-4. [DOI: 10.1021/ja5042397] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Derrick A. Roberts
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Ana M. Castilla
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Tanya K. Ronson
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
| | - Jonathan R. Nitschke
- Department of Chemistry, University of Cambridge, Lensfield
Road, Cambridge CB2 1EW, United Kingdom
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41
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A DMAP-catalyzed mild and efficient synthesis of 1,2-dihydroquinazolines via a one-pot three-component protocol. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.157] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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42
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Verma GK, Shukla G, Nagaraju A, Srivastava A, Raghuvanshi K, Singh MS. DMAP-promoted domino annulation of β-ketothioamides with internal alkynes: a highly regioselective access to functionalized 1,3-thiazolidin-4-ones at room temperature. RSC Adv 2014. [DOI: 10.1039/c4ra00131a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
One-pot DMAP-mediated regioselective access to functionalized 1,3-thiazolidin-4-ones has been achieved via annulation of β-ketothioamides with internal alkynes.
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Affiliation(s)
- Girijesh Kumar Verma
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005, India
| | - Gaurav Shukla
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005, India
| | - Anugula Nagaraju
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005, India
| | - Abhijeet Srivastava
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005, India
| | - Keshav Raghuvanshi
- Institut fuer Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- 37077 Gottingen, Germany
| | - Maya Shankar Singh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi-221005, India
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Hao L, Chen X, Chen S, Jiang K, Torres J, Chi YR. Access to pyridines via DMAP-catalyzed activation of α-chloro acetic ester to react with unsaturated imines. Org Chem Front 2014. [DOI: 10.1039/c3qo00045a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Facile access to trisubstituted pyridines from α-chloro acetic ester and unsaturated imines is achieved.
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Affiliation(s)
- Lin Hao
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
| | - Xingkuan Chen
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
| | - Shaojin Chen
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
| | - Ke Jiang
- School of Biological Sciences
- Nanyang Technological University
- Singapore 637551, Singapore
| | - Jaume Torres
- School of Biological Sciences
- Nanyang Technological University
- Singapore 637551, Singapore
| | - Yonggui Robin Chi
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
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Ma G, Sibi MP. Enantioselective allylic amination of MBH carbonates catalyzed by novel chiral 4-dialkylaminopyridine catalysts. Org Chem Front 2014. [DOI: 10.1039/c4qo00210e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sinisi V, Boronová K, Colomban S, Navarini L, Berti F, Forzato C. Synthesis of Mono-, Di-, and Tri-3,4-dimethoxycinnamoyl-1,5-γ-quinides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301657] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Eibl C, Tomassoli I, Munoz L, Stokes C, Papke RL, Gündisch D. The 3,7-diazabicyclo[3.3.1]nonane scaffold for subtype selective nicotinic acetylcholine receptor (nAChR) ligands. Part 1: the influence of different hydrogen bond acceptor systems on alkyl and (hetero)aryl substituents. Bioorg Med Chem 2013; 21:7283-308. [PMID: 24156938 PMCID: PMC4519239 DOI: 10.1016/j.bmc.2013.09.059] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 09/15/2013] [Accepted: 09/24/2013] [Indexed: 12/21/2022]
Abstract
3,7-Diazabicyclo[3.3.1]nonane is a naturally occurring scaffold interacting with nicotinic acetylcholine receptors (nAChRs). When one nitrogen of the 3,7-diazabicyclo[3.3.1]nonane scaffold was implemented in a carboxamide motif displaying a hydrogen bond acceptor (HBA) functionality, compounds with higher affinities and subtype selectivity for α4β2(∗) were obtained. The nature of the HBA system (carboxamide, sulfonamide, urea) had a strong impact on nAChR interaction. High affinity ligands for α4β2(∗) possessed small alkyl chains, small un-substituted hetero-aryl groups or para-substituted phenyl ring systems along with a carboxamide group. Electrophysiological responses of selected 3,7-diazabicyclo[3.3.1]nonane derivatives to Xenopus oocytes expressing various nAChR subtypes showed diverse activation profiles. Compounds with strongest agonistic profiles were obtained with small alkyl groups whereas a shift to partial agonism/antagonism was observed for aryl substituents.
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Affiliation(s)
- Christoph Eibl
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-533121 Bonn, Germany
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Isabelle Tomassoli
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Lenka Munoz
- Department of Pharmacology, School of Medical Sciences, The University of Sydney, NSW 2006, Australia
| | - Clare Stokes
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL32610, USA
| | - Roger L. Papke
- Department of Pharmacology and Therapeutics, College of Medicine, University of Florida, Gainesville, FL32610, USA
| | - Daniela Gündisch
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-533121 Bonn, Germany
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
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Qin J, Lin S, Song S, Zhang L, Chen H. 4-Dimethylaminopyridine promoted interfacial polymerization between hyperbranched polyesteramide and trimesoyl chloride for preparing ultralow-pressure reverse osmosis composite membrane. ACS APPLIED MATERIALS & INTERFACES 2013; 5:6649-6656. [PMID: 23796005 DOI: 10.1021/am401345y] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We have presented a concept of ultralow-pressure reverse osmosis membrane based on hyperbranched polyesteramide through interfacial reaction promoted by pyridine derivate. In this strategy, a key catalyst of 4-dimethylaminopyridine, which can both eliminate the steric hindrance of acyl transfer reaction and facilitate the phase transfer in interfacial polymerization, is adopted to drive the formation of a thin film composite membrane from the hyperbranched polyesteramide and trimesoyl chloride. The results of the characterization demonstrate that a dense, rough, and hydrophilic active layer with a thickness of about 100 nm is formed when the 4-dimethylaminopyridine catalyst is used. The salt rejections for Na2SO4, NaCl, and MgSO4 of the as-prepared composite membrane are higher than 92%, especially for Na2SO4 with 98% rejection. The water fluxes reach about 30-40 L·m(-2)·h(-1) even at an operation pressure of 0.6 MPa. The membrane exhibits good chlorine-resistance ability but poor resistance abilities to acidic and alkaline solutions in the physical-chemical stability experiment. It is also found that the resultant membrane possesses excellent separation performance for PEG-200, showing a promising way to separate small organic molecules from water.
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Affiliation(s)
- Jiaxu Qin
- Engineering Research Center of Membrane and Water Treatment Technology of MOE, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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Kotsuki H, Moritaka M, Nakano K. Efficient Organocatalytic Michael Addition Reaction of β−Ketoesters under High Pressure. HETEROCYCLES 2013. [DOI: 10.3987/com-13-12818] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Bromberg L, Klichko Y, Chang EP, Speakman S, Straut CM, Wilusz E, Hatton TA. Alkylaminopyridine-modified aluminum aminoterephthalate metal-organic frameworks as components of reactive self-detoxifying materials. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4595-4602. [PMID: 22871803 DOI: 10.1021/am3009696] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aluminum aminoterephthalate MOF particulate materials (NH(2)-MIL-101(Al) and NH(2)-MIL-53(Al)), studied here as components of self-detoxifying surfaces, retained their reactivity following their covalent attachment to protective surfaces utilizing a newly developed strategy in which the MOF particles were deposited on a reactive adhesive composed of polyisobutylene/toluene diisocyanate (PIB/TDI) blends. Following MOF attachment and curing, the MOF primary amino groups were functionalized with highly nucleophilic 4-methylaminopyridine (4-MAP) by disuccinimidyl suberate-activated conjugation. The resulting MOF-4-MAP modified PIB/TDI elastomeric films were mechanically flexible and capable of degrading diisopropyl fluorophosphate (DFP), a chemical threat simulant.
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Affiliation(s)
- Lev Bromberg
- Departments of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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