1
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Sturm AG, Santowski T, Felder T, Lewis KM, Holthausen MC, Auner N. Müller–Rochow Reloaded: Single-Step Synthesis of Bifunctional Monosilanes. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander G. Sturm
- Institute of Inorganic and Analytic Chemistry, Goethe-University, Max-von-Laue-Straße 7, 60438 Frankfurt/Main, Germany
| | - Tobias Santowski
- Institute of Inorganic and Analytic Chemistry, Goethe-University, Max-von-Laue-Straße 7, 60438 Frankfurt/Main, Germany
| | - Thorsten Felder
- Momentive Performance Materials, Chempark, 51368 Leverkusen, Germany
| | - Kenrick M. Lewis
- Momentive Performance Materials, 769 Old Saw Mill River Road, Tarrytown, New York 10591, United States
| | - Max C. Holthausen
- Institute of Inorganic and Analytic Chemistry, Goethe-University, Max-von-Laue-Straße 7, 60438 Frankfurt/Main, Germany
| | - Norbert Auner
- Institute of Inorganic and Analytic Chemistry, Goethe-University, Max-von-Laue-Straße 7, 60438 Frankfurt/Main, Germany
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2
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Hage M, Khelissa S, Akoum H, Chihib NE, Jama C. Cold plasma surface treatments to prevent biofilm formation in food industries and medical sectors. Appl Microbiol Biotechnol 2022; 106:81-100. [PMID: 34889984 PMCID: PMC8661349 DOI: 10.1007/s00253-021-11715-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 10/28/2022]
Abstract
Environmental conditions in food and medical fields enable the bacteria to attach and grow on surfaces leading to resistant bacterial biofilm formation. Indeed, the first step in biofilm formation is the bacterial irreversible adhesion. Controlling and inhibiting this adhesion is a passive approach to fight against biofilm development. This strategy is an interesting path in the inhibition of biofilm formation since it targets the first step of biofilm development. Those pathogenic structures are responsible for several foodborne diseases and nosocomial infections. Therefore, to face this public health threat, researchers employed cold plasma technologies in coating development. In this review, the different factors influencing the bacterial adhesion to a substrate are outlined. The goal is to present the passive coating strategies aiming to prevent biofilm formation via cold plasma treatments, highlighting antiadhesive elaborated surfaces. General aspects of surface treatment, including physico-chemical modification and application of cold plasma technologies, were also presented. KEY POINTS: • Factors surrounding pathogenic bacteria influence biofilm development. • Controlling bacterial adhesion prevents biofilm formation. • Materials can be coated via cold plasma to inhibit bacterial adhesion.
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Affiliation(s)
- Mayssane Hage
- UMR 8207 - UMET - Unité Matériaux Et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, 59000, Lille, France
- Laboratoire d'analyses Chimiques Et Microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Lebanon
| | - Simon Khelissa
- UMR 8207 - UMET - Unité Matériaux Et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, 59000, Lille, France
| | - Hikmat Akoum
- Laboratoire d'analyses Chimiques Et Microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Lebanon
| | - Nour-Eddine Chihib
- UMR 8207 - UMET - Unité Matériaux Et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, 59000, Lille, France
| | - Charafeddine Jama
- UMR 8207 - UMET - Unité Matériaux Et Transformations, Univ. Lille, CNRS, INRAE, Centrale Lille, 59000, Lille, France.
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3
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Preparation of Extremely Active Ethylene Tetramerization Catalyst [iPrN(PAr2)2−CrCl2]+[B(C6F5)4]– (Ar = −C6H4-p-SiR3). Catalysts 2021. [DOI: 10.3390/catal11091122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Numerous efforts have been made to achieve “on-purpose” 1-octene production since Sasol discovered a Cr-based selective ethylene tetramerization catalyst in the early 2000s. By preparing a series of bis(phosphine) ligands iPrN(PAr2)2 where the Ar contains a bulky –SiR3 substituent (Ar = −C6H4-p-Si(nBu)3 (1), −C6H4-p-Si(1-hexyl)3 (2), −C6H4-p-Si(1-octyl)3 (3), −C6H4-p-Si(2-ethylhexyl)3 (4), −C6H4-p-Si(3,7-dimethyloctyl)3 (5)), we obtained an extremely active catalyst that meets the criteria for commercial utilization. The Cr complexes [iPrN(PAr2)2−CrCl2]+[B(C6F5)4]–, obtained by reacting ligands 1–5 with [(CH3CN)4CrCl2]+[B(C6F5)4]–, showed high activity exceeding 6000 kg/g-Cr/h, when combined with the inexpensive iBu3Al, thus avoiding the use of expensive modified methylaluminoxane (MMAO). The bulky –SiR3 substituents played a key role in the success of catalysis by blocking the formation of inactive species (Cr complexes coordinated by two iPrN(PAr2)2 ligands, that is, [(iPrN(PAr2)2)2−CrCl2]+[B(C6F5)4]–). Among the complexes prepared, [3−CrCl2]+[B(C6F5)4]– exhibited the highest activity (11,100 kg/g-Cr/h, 100 kg/g-catalyst) with high 1-octene selectivity (75 wt%) and, moreover, mitigated the generation of undesired > C10 fractions (10.7 wt%). A 10-g-scale synthesis of 3 was developed, as well as a facile and low-cost synthetic method for [(CH3CN)4CrCl2]+[B(C6F5)4]–.
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4
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Bauer JO, Espinosa‐Jalapa NA, Fontana N, Götz T, Falk A. Functional Group Variation in
tert
‐Butyldiphenylsilanes (TBDPS): Syntheses, Reactivities, and Effects on the Intermolecular Interaction Pattern in the Molecular Crystalline State. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jonathan O. Bauer
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
| | - Noel Angel Espinosa‐Jalapa
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
| | - Nicolò Fontana
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
| | - Tobias Götz
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
| | - Alexander Falk
- Institut für Anorganische Chemie Fakultät für Chemie und Pharmazie Universität Regensburg Universitätsstraße 31 93053 Regensburg Germany
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5
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Hage M, Khelissa S, Abdallah M, Akoum H, Chihib NE, Jama C. Cold plasma assisted deposition of organosilicon coatings on stainless steel for prevention of adhesion of Salmonella enterica serovar Enteritidis. BIOFOULING 2021; 37:161-173. [PMID: 33645343 DOI: 10.1080/08927014.2021.1877274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
The persistence of Salmonella enterica on abiotic surfaces in hospitals and the agri-food industries leads to several infections worldwide. In this context, this work aimed to study the adhesion of S. Enteritidis on plasma-modified stainless steel to prevent biofilm-associated-infections. Surface modification was achieved by the elaboration of organosilicon coatings from the monomer 1,1,3,3-tetramethyldisiloxane, mixed with oxygen, using a flowing nitrogen microwave post-discharge plasma polymerization technique. The effect of cold plasma parameters on the properties of the coatings, the coated surface topography and S. Enteritidis cell adhesion was studied. The results showed that the surface topography influenced the bacterial adhesion rate. Indeed, rough surfaces did not repel S. Enteritidis since the number of attached cells on these coatings was between 30 ± 4 to 65 ± 4 bacteria per microscopic field. Otherwise, smoother surfaces demonstrated an anti-adhesive character since the number of attached cells was almost nil on these coatings.
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Affiliation(s)
- Mayssane Hage
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
- Laboratoire d'analyses chimiques et microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Liban
| | - Simon Khelissa
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Marwan Abdallah
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Hikmat Akoum
- Laboratoire d'analyses chimiques et microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Liban
| | - Nour-Eddine Chihib
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Charafeddine Jama
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
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6
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Chen W, Liu X, Kong J, Li J, Chen Y, Cui C. Rare-Earth-Catalyzed Selective Synthesis of Linear Hydridopolycarbosilanes and Their Functionalization. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wufeng Chen
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaojuan Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jiajun Kong
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yaofeng Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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7
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Komine N, Mitsui T, Kikuchi S, Hirano M. Ligand-Controlled Regiodivergent Hydrosilylation of Conjugated Dienes Catalyzed by Mono(phosphine)palladium(0) Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nobuyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Tatsuo Mitsui
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Shu Kikuchi
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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8
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Facile preparation of hydrochlorosilane by alkali metal halide catalyzed Si-H/Si-Cl redistribution reaction. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Wittmann S, Tiniakos AF, Prunet J. Diastereoselective synthesis of trisubstituted olefins using a silicon-tether ring-closing metathesis strategy. Org Biomol Chem 2020; 18:2297-2306. [PMID: 32159196 DOI: 10.1039/c9ob02563d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diastereoselective synthesis of trisubstituted olefins with concomitant C-C bond formation is still a difficult challenge, and olefin metathesis reactions for the formation of such alkenes are usually not high yielding or/and diastereoselective. Herein we report an efficient and diastereoselective synthesis of trisubstituted olefins flanked by an allylic alcohol, by a silicon-tether ring-closing metathesis strategy. Both E- and Z-trisubstituted alkenes were synthesised, depending on the method employed to cleave the silicon tether. Furthermore, this methodology features a novel Peterson olefination for the synthesis of allyldimethylsilanes. These versatile intermediates were also converted into the corresponding allylchlorodimethylsilanes, which are not easily accessible in high yields by other methods.
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Affiliation(s)
- Stéphane Wittmann
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, UK.
| | - Alexander F Tiniakos
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, UK.
| | - Joëlle Prunet
- WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, University Avenue, Glasgow G12 8QQ, UK.
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10
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Huynh W, Conley MP. Origin of the 29Si NMR chemical shift in R3Si–X and relationship to the formation of silylium (R3Si+) ions. Dalton Trans 2020; 49:16453-16463. [DOI: 10.1039/d0dt02099k] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The origin in deshielding of 29Si NMR chemical shifts in R3Si–X, where X = H, OMe, Cl, OTf, [CH6B11X6], toluene, and OX (OX = surface oxygen), as well as iPr3Si+ and Mes3Si+ were studied using DFT methods.
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Affiliation(s)
- Winn Huynh
- Department of Chemistry
- University of California
- Riverside
- USA
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11
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Fan X, Xiao P, Jiao Z, Yang T, Dai X, Xu W, Tan JD, Cui G, Su H, Fang W, Wu J. Neutral-Eosin-Y-Photocatalyzed Silane Chlorination Using Dichloromethane. Angew Chem Int Ed Engl 2019; 58:12580-12584. [PMID: 31310447 DOI: 10.1002/anie.201908556] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Indexed: 01/04/2023]
Abstract
Chlorosilanes are versatile reagents in organic synthesis and material science. A mild pathway is now reported for the quantitative conversion of hydrosilanes to silyl chlorides under visible-light irradiation using neutral eosin Y as a hydrogen-atom-transfer photocatalyst and dichloromethane as a chlorinating agent. Stepwise chlorination of di- and trihydrosilanes was achieved in a highly selective fashion assisted by continuous-flow micro-tubing reactors. The ability to access silyl radicals using photocatalytic Si-H activation promoted by eosin Y offers new perspectives for the synthesis of valuable silicon reagents in a convenient and green manner.
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Affiliation(s)
- Xuanzi Fan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore
| | - Pin Xiao
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Zeqing Jiao
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Tingting Yang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore.,College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, China
| | - Xiaojuan Dai
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Wengang Xu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore
| | - Jin Da Tan
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore
| | - Ganglong Cui
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Hongmei Su
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Weihai Fang
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Republic of Singapore
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12
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Fan X, Xiao P, Jiao Z, Yang T, Dai X, Xu W, Tan JD, Cui G, Su H, Fang W, Wu J. Neutral‐Eosin‐Y‐Photocatalyzed Silane Chlorination Using Dichloromethane. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908556] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xuanzi Fan
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Republic of Singapore
| | - Pin Xiao
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Zeqing Jiao
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Tingting Yang
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Republic of Singapore
- College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241002 China
| | - Xiaojuan Dai
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Wengang Xu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Republic of Singapore
| | - Jin Da Tan
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Republic of Singapore
| | - Ganglong Cui
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Hongmei Su
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Weihai Fang
- College of ChemistryBeijing Normal University Beijing 100875 China
| | - Jie Wu
- Department of ChemistryNational University of Singapore 3 Science Drive 3 117543 Republic of Singapore
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13
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PPh3-Assisted Esterification of Acyl Fluorides with Ethers via C(sp3)–O Bond Cleavage Accelerated by TBAT. Catalysts 2019. [DOI: 10.3390/catal9070574] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
We describe the (triphenylphosphine (PPh3)-assisted methoxylation of acyl fluorides with cyclopentyl methyl ether (CPME) accelerated by tetrabutylammonium difluorotriphenysilicate (TBAT) via regiospecific C–OMe bond cleavage. Easily available CPME is utilized not only as the solvent, but a methoxylating agent in this transformation. The present method is featured by C–O and C–F bond cleavage under metal-free conditions, good functional-group tolerance, and wide substrate scope. Mechanistic studies revealed that the radical process was not involved.
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14
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Sturm AG, Schweizer JI, Meyer L, Santowski T, Auner N, Holthausen MC. Lewis Base Catalyzed Selective Chlorination of Monosilanes. Chemistry 2018; 24:17796-17801. [DOI: 10.1002/chem.201803921] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Alexander G. Sturm
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
| | - Julia I. Schweizer
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
| | - Lioba Meyer
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
| | - Tobias Santowski
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
| | - Norbert Auner
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
| | - Max C. Holthausen
- Institut für Anorganische und Analytische Chemie; Goethe-Universität; Max-von-Laue-Straße 7 60438 Frankfurt/Main Germany
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15
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16
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Šimarek A, Lamač M, Horáček M, Pinkas J. B(C 6
F 5
) 3
catalysis accelerates the hydrosilane chlorination by Ph 3
CCl. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Adam Šimarek
- J. Heyrovský Institute of Physical Chemistry; Academy of Sciences of the Czech Republic; v.v.i., Dolejškova 2155/3 182 23 Prague 8 Czech Republic
| | - Martin Lamač
- J. Heyrovský Institute of Physical Chemistry; Academy of Sciences of the Czech Republic; v.v.i., Dolejškova 2155/3 182 23 Prague 8 Czech Republic
| | - Michal Horáček
- J. Heyrovský Institute of Physical Chemistry; Academy of Sciences of the Czech Republic; v.v.i., Dolejškova 2155/3 182 23 Prague 8 Czech Republic
| | - Jiří Pinkas
- J. Heyrovský Institute of Physical Chemistry; Academy of Sciences of the Czech Republic; v.v.i., Dolejškova 2155/3 182 23 Prague 8 Czech Republic
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17
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Roberts JM, Placke JL, Eldred DV, Katsoulis DE. Synthesis of SiCl4 via the Chloride Salt-Catalyzed Reaction of Orthosilicates with SOCl2. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03301] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John M. Roberts
- The Dow Chemical Company, 2200 W. Salzburg Road, Auburn, Michigan 48642, United States
| | - Jessica L. Placke
- The Dow Chemical Company, 2200 W. Salzburg Road, Auburn, Michigan 48642, United States
| | - Donald V. Eldred
- The Dow Chemical Company, 2200 W. Salzburg Road, Auburn, Michigan 48642, United States
| | - Dimitris E. Katsoulis
- The Dow Chemical Company, 2200 W. Salzburg Road, Auburn, Michigan 48642, United States
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18
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Chulsky K, Dobrovetsky R. B(C 6 F 5 ) 3 -Catalyzed Selective Chlorination of Hydrosilanes. Angew Chem Int Ed Engl 2017; 56:4744-4748. [PMID: 28323372 DOI: 10.1002/anie.201700324] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Indexed: 11/08/2022]
Abstract
The chlorination of Si-H bonds often requires stoichiometric amounts of metal salts in conjunction with hazardous reagents, such as tin chlorides, Cl2 , and CCl4 . The catalytic chlorination of silanes often involves the use of expensive transition-metal catalysts. By a new simple, selective, and highly efficient catalytic metal-free method for the chlorination of Si-H bonds, mono-, di-, and trihydrosilanes were selectively chlorinated in the presence of a catalytic amount of B(C6 F5 )3 or Et2 O⋅B(C6 F5 )3 and HCl with the release of H2 as a by-product. The hydrides in di- and trihydrosilanes could be selectively chlorinated by HCl in a stepwise manner when Et2 O⋅B(C6 F5 )3 was used as the catalyst. A mechanism is proposed for these catalytic chlorination reactions on the basis of competition experiments and density functional theory (DFT) calculations.
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Affiliation(s)
- Karina Chulsky
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Roman Dobrovetsky
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 69978, Israel
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19
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Chulsky K, Dobrovetsky R. B(C6
F5
)3
-Catalyzed Selective Chlorination of Hydrosilanes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700324] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Karina Chulsky
- School of Chemistry; Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Tel Aviv 69978 Israel
| | - Roman Dobrovetsky
- School of Chemistry; Raymond and Beverly Sackler Faculty of Exact Sciences; Tel Aviv University; Tel Aviv 69978 Israel
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20
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Ahrens T, Schmiedecke B, Braun T, Herrmann R, Laubenstein R. Activation of CS2and COS at a Rhodium(I) Germyl Complex: Generation of CS and Carbido Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601122] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Theresia Ahrens
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Bastian Schmiedecke
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Thomas Braun
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Roy Herrmann
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Reik Laubenstein
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
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21
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Zaitsev KV, Lam K, Zhanabil Z, Suleimen Y, Kharcheva AV, Tafeenko VA, Oprunenko YF, Poleshchuk OK, Lermontova EK, Churakov AV. Oligogermanes Containing Only Electron-Withdrawing Substituents: Synthesis and Properties. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00767] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kirill V. Zaitsev
- Department
of Chemistry, Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
| | - Kevin Lam
- Department
of Chemistry, School of Science and Technology, Nazarbayev University, Astana, Kazakhstan, 010000
| | - Zhaisan Zhanabil
- Department
of Chemistry, School of Science and Technology, Nazarbayev University, Astana, Kazakhstan, 010000
| | - Yerlan Suleimen
- Department
of Chemistry, School of Science and Technology, Nazarbayev University, Astana, Kazakhstan, 010000
| | - Anastasia V. Kharcheva
- Department
of Chemistry, Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
| | - Viktor A. Tafeenko
- Department
of Chemistry, Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
| | - Yuri F. Oprunenko
- Department
of Chemistry, Moscow State University, Leninskye Gory 1, Moscow 119991, Russia
| | - Oleg Kh. Poleshchuk
- National Research Tomsk Polytechnic University, Lenin Avenue, 30, Tomsk 634050, Russia
- Tomsk State Pedagogical University, Kievskaya Street, 60, Tomsk 634061, Russia
| | - Elmira Kh. Lermontova
- Russian Academy of Science, N.S. Kurnakov General and Inorganic Chemistry Institute, Leninskii
pr., 31, Moscow 119991, Russia
| | - Andrei V. Churakov
- Russian Academy of Science, N.S. Kurnakov General and Inorganic Chemistry Institute, Leninskii
pr., 31, Moscow 119991, Russia
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22
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Chao CG, Leibham AM, Bergbreiter DE. Hydrocarbon Soluble Recyclable Silylation Reagents and Purification Auxiliaries. Org Lett 2016; 18:1214-6. [PMID: 26911488 DOI: 10.1021/acs.orglett.6b00263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Procedures using heptane-phase-selectively soluble octadecyldimethylsilyl groups to facilitate separations and silyl reagent regeneration are described. These results show that alcohols and alkynes protected by these groups are phase-selectively soluble in hydrocarbon solvents. In a thermomorphic cyclohexane/DMF system, >96% of the silylated alcohols are in the cyclohexane phase, allowing these compounds to be purified by a simple liquid/liquid extraction. Applications of these silylating agents in a Grignard synthesis and Sonogashira reaction are described.
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Affiliation(s)
- Chih-Gang Chao
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - Ashley M Leibham
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
| | - David E Bergbreiter
- Department of Chemistry, Texas A&M University , College Station, Texas 77842-3012, United States
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23
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Roberts JM, Eldred DV, Katsoulis DE. Synthesis of SiCl4 from Gaseous HCl and Si(OMe)4. Reaction Development and Kinetic Studies. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John M. Roberts
- Dow Corning Corporation, 2200 W. Salzburg Road, Auburn, Michigan 48611, United States
| | - Donald V. Eldred
- Dow Corning Corporation, 2200 W. Salzburg Road, Auburn, Michigan 48611, United States
| | - Dimitris E. Katsoulis
- Dow Corning Corporation, 2200 W. Salzburg Road, Auburn, Michigan 48611, United States
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24
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Zhang XL, Yamada H, Saito T, Kai T, Murakami K, Nakashima M, Ohshita J, Akamatsu K, Nakao SI. Development of hydrogen-selective triphenylmethoxysilane-derived silica membranes with tailored pore size by chemical vapor deposition. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.09.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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25
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Savela R, Grénman H, Sundelin H, Norrby PO, Yu. Murzin D, Leino R. Kinetic and Theoretical Investigation of Iron(III)-Catalyzed Silane Chlorination. ChemCatChem 2015. [DOI: 10.1002/cctc.201500974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Risto Savela
- Johan Gadolin Process Chemistry Centre, Laboratory of Organic Chemistry; Åbo Akademi University; 20500 Åbo Finland
| | - Henrik Grénman
- Johan Gadolin Process Chemistry Centre, Laboratory of Industrial Chemistry and Reaction Engineering; Åbo Akademi University; 20500 Åbo Finland
| | - Heidi Sundelin
- Johan Gadolin Process Chemistry Centre, Laboratory of Organic Chemistry; Åbo Akademi University; 20500 Åbo Finland
| | - Per-Ola Norrby
- Pharmaceutical Development, Global Medicines Development AstraZeneca, Pepparedsleden 1; SE 431 83 Mölndal Sweden
| | - Dmitry Yu. Murzin
- Johan Gadolin Process Chemistry Centre, Laboratory of Industrial Chemistry and Reaction Engineering; Åbo Akademi University; 20500 Åbo Finland
| | - Reko Leino
- Johan Gadolin Process Chemistry Centre, Laboratory of Organic Chemistry; Åbo Akademi University; 20500 Åbo Finland
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26
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Iron-catalyzed depolymerizations of end-of-life silicones with fatty alcohols. RESOURCE-EFFICIENT TECHNOLOGIES 2015. [DOI: 10.1016/j.reffit.2015.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Lázaro G, Polo V, Fernández-Alvarez FJ, García-Orduña P, Lahoz FJ, Iglesias M, Pérez-Torrente JJ, Oro LA. Catalytic hydrodechlorination of benzyl chloride promoted by Rh-N-heterocyclic carbene catalysts. CHEMSUSCHEM 2015; 8:495-503. [PMID: 25504980 DOI: 10.1002/cssc.201403036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 10/27/2014] [Indexed: 06/04/2023]
Abstract
The rhodium(I) complexes [Rh(Cl)(COD)(R-NHC-(CH2 )3 Si(OiPr)3 )] [COD=cyclooctadiene; R=2,6-diisopropylphenyl (1 a); n-butyl (1 b)] are effective catalyst precursors for the homogeneous hydrodechlorination of benzyl chloride using HSiEt3 as hydrogen source. This reaction is selective to the formation of toluene. However, in presence of a stoichiometric amount of potassium tert-butoxide (KtBuO) the formation of mixtures containing toluene together with 17-19 mol % of the C--C homocoupling product, namely PhCH2 CH2 Ph, is observed. A mechanism proposal based on experimental insights and theoretical calculations at the DFT level that allows explanation of the experimental findings is included. Moreover, the heterogeneous catalytic system based on catalyst 1 a supported on MCM-41 has been demonstrated to be effective for the solvent-free hydrodechlorination of benzyl chloride using HSiEt3 and HSiMe(OSiMe3 )2 .
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Affiliation(s)
- Guillermo Lázaro
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, Pl. San Francisco S/N, 50009 Zaragoza (Spain)
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28
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Weidauer M, Heyder B, Woelki D, Tschiersch M, Köhler-Krützfeldt A, Enthaler S. Iron-catalyzed depolymerizations of silicones with hexanoic anhydride provide a potential recycling method for end-of-life polymers. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201400592] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Maik Weidauer
- Department of Chemistry; Technische Universität Berlin; Cluster of Excellence “Unifying Concepts in Catalysis”; Berlin Germany
| | | | | | | | | | - Stephan Enthaler
- Department of Chemistry; Technische Universität Berlin; Cluster of Excellence “Unifying Concepts in Catalysis”; Berlin Germany
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29
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Komine N, Abe M, Suda R, Hirano M. Markovnikov-Selective Hydrosilylation of Electron-Deficient Alkenes with Arylsilanes Catalyzed by Mono(phosphine)palladium(0). Organometallics 2015. [DOI: 10.1021/om500964g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nobuyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Makoto Abe
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Ryoko Suda
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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30
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31
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Enthaler S, Kretschmer R. Low-temperature depolymerization of polysiloxanes with iron catalysis. CHEMSUSCHEM 2014; 7:2030-2036. [PMID: 24825826 DOI: 10.1002/cssc.201301386] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/05/2014] [Indexed: 06/03/2023]
Abstract
The easy accessibility and high adjustability of polymers mainly accounts for the great impact of such materials on modern society. Besides this great success, an important matter is the accumulation of large amounts of end-of-life polymers, which are mainly deposited in landfills or converted by thermal recycling or down-cycling to low-quality materials. In contrast to that, the depolymerization of end-of-life polymers to monomers, which can be applied as feedstock in polymerization chemistry for high-quality polymers, is only carried out for a small fraction of waste. Polysiloxanes are extensively used in a diverse array of technological applications. Based on intrinsic properties of polymers, depolymerization is challenging and only a few high-temperature or less environment-friendly processes have been reported. In this regard, we have set up a capable low-temperature protocol for the depolymerization of poly(dimethylsiloxane) in the presence of catalytic amounts of simple iron salts in combination with different depolymerization reagents. The application of benzoyl fluoride, benzoyl chloride/potassium fluoride, or benzoic anhydride/potassium fluoride as depolymerization reagents affords difluorodimethylsilane or 1,3-difluoro-1,1,3,3-tetramethyldisilxanes as products, which are interesting building blocks for the synthesis of new polymers and allow an overall recycling of polysiloxanes.
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Affiliation(s)
- Stephan Enthaler
- Technische Universität Berlin, Department of Chemistry, Cluster of Excellence "Unifying Concepts in Catalysis", Str. des 17. Juni 115/C2, 10623 Berlin (Germany).
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32
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Olaru M, Beckmann J, Raţ CI. Polyfluorinated Functionalized m-Terphenyls. New Substituents and Ligands in Organometallic Synthesis. Organometallics 2014. [DOI: 10.1021/om500244y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Marian Olaru
- Centre
of Supramolecular Organic and Organometallic Chemistry, Department
of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
- Institut für Anorganische Chemie, Universität Bremen, Leobener Street, 28359 Bremen, Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie, Universität Bremen, Leobener Street, 28359 Bremen, Germany
| | - Ciprian I. Raţ
- Centre
of Supramolecular Organic and Organometallic Chemistry, Department
of Chemistry, Faculty of Chemistry and Chemical Engineering, Babeş-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
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33
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Iron-Catalyzed Arylation of Aromatic Ketones and Aldehydes Mediated by Organosilanes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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34
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Effect of plasma processing and organosilane modifications of polyethylene on Aeromonas hydrophila biofilm formation. BIOMED RESEARCH INTERNATIONAL 2014; 2014:232514. [PMID: 24605323 PMCID: PMC3925535 DOI: 10.1155/2014/232514] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 12/02/2013] [Indexed: 11/18/2022]
Abstract
The aim of our research was to study how the modifications of polyethylene—a material commonly used in medicine and water industry—influence bacterial cell attachment and biofilm formation. The native surface was activated and modified using two-step process consisting in the activation of native surface with a H2O vapor plasma followed by its treatment with various organosilanes, namely, [3(tertbutylamine-2hydroxy) propyloxypropyl] diethoxymethylsilane, 1H,1H,2H,2H-perfluorooctylmethyldimethoxysilane, dimethoxydimethylsilane, and isobutylmethyldimethoxysilane. The effect of polyethylene modification after chemical treatment was analyzed using surface tension measurement. The adhesive properties of Aeromonas hydrophila LOCK0968 were studied in water with a low concentration of organic compounds, using luminometric and microscopic methods, and the viability of the adhered bacterial cells was evaluated using the colony forming units method. After two-week incubation the chemically modified materials exhibited better antiadhesive and antibacterial characteristics in comparison to the native surface. Among the examined modifying agents, dimethoxydimethylsilane showed the best desired properties.
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