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Sinnema EG, Ramspoth TF, Bouma RH, Ge L, Harutyunyan SR. Enantioselective Hydrophosphination of Terminal Alkenyl Aza-Heteroarenes. Angew Chem Int Ed Engl 2024; 63:e202316785. [PMID: 38133954 DOI: 10.1002/anie.202316785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/15/2023] [Accepted: 12/20/2023] [Indexed: 12/24/2023]
Abstract
This paper presents a Mn(I)-catalysed methodology for the enantioselective hydrophosphination of terminal alkenyl aza-heteroarenes. The catalyst operates through H-P bond activation, enabling successful hydrophosphination of a diverse range of alkenyl-heteroarenes with high enantioselectivity. The presented protocol addresses the inherently low reactivity and the commonly encountered suboptimal enantioselectivities of these challenging substrates. As an important application we show that this method facilitates the synthesis of a non-symmetric tridentate P,N,P-containing ligand like structure in just two synthetic steps using a single catalytic system.
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Affiliation(s)
- Esther G Sinnema
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Tizian-Frank Ramspoth
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Reinder H Bouma
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Luo Ge
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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2
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Masuda Borylation–Suzuki Coupling (MBSC) Sequence: A One-Pot Process to Access Complex (hetero)Biaryls. Catalysts 2023. [DOI: 10.3390/catal13020350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The direct formation of (hetero)biaryls from readily available (hetero)aryl halides under mild reaction conditions can be efficiently achieved through the Masuda borylation–Suzuki coupling (MBSC) sequence. The MBSC sequence catenates Pd-catalyzed Masuda borylation and Suzuki coupling into a one-pot process, giving access to diverse symmetrically and unsymmetrically substituted scaffolds. (Hetero)biaryls are ubiquitous structural motifs that appear in natural products, pharmaceutically relevant scaffolds, functional dyes, and several other structures. This review summarizes the development of the MBSC sequence and its improvements over the past two decades.
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Fabitha K, Chandrakanth M, Pramod RN, Arya CG, Li Y, Banothu J. Recent Developments in the Synthesis of Indole‐Pyrazole Hybrids. ChemistrySelect 2022. [DOI: 10.1002/slct.202201064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- K. Fabitha
- Department of Chemistry National Institute of Technology Calicut Kozhikode 673601 Kerala India
| | - Munugala Chandrakanth
- Department of Chemistry National Institute of Technology Calicut Kozhikode 673601 Kerala India
| | - Rakendu N. Pramod
- Department of Chemistry National Institute of Technology Calicut Kozhikode 673601 Kerala India
| | - C. G. Arya
- Department of Chemistry National Institute of Technology Calicut Kozhikode 673601 Kerala India
| | - Yupeng Li
- Masonic Cancer Center and Department of Medicinal Chemistry University of Minnesota Minneapolis Minnesota 55455 United States
| | - Janardhan Banothu
- Department of Chemistry National Institute of Technology Calicut Kozhikode 673601 Kerala India
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Yang K, Luo SH, Chen SH, Cao XY, Zhou YJ, Lin YL, Huo YP, Wang ZY. Simple inorganic base promoted C-N and C-C formation: synthesis of benzo[4,5]imidazo[1,2- a]pyridines as functional AIEgens used for detecting picric acid. Org Biomol Chem 2021; 19:8133-8139. [PMID: 34545907 DOI: 10.1039/d1ob01424b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal-free catalyzed intermolecular tandem Michael addition/cyclization has been developed for the synthesis of benzo[4,5]imidazo[1,2-a]pyridines from α-bromocinnamaldehyde and 2-substituted benzimidazoles. The reaction promoted by a simple inorganic base displays moderate to good yields and good functional group tolerance. The optical properties of some typical products have been investigated. We found that, due to the presence of the benzene ring at the C1-position of benzo[4,5]imidazo[1,2-a]pyridines which restricts intramolecular motion, as a new type of aggregation-induced emission (AIE) luminogen (AIEgen), they show very good solid-state fluorescence with quantum yields up to 88.80%. Importantly, the AIE performance of compound 3b can be useful to detect the nitroaromatic explosive picric acid (PA) with a detection limit and quenching constant of 42.5 nM and 7.27 × 104 M-M, respectively.
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Affiliation(s)
- Kai Yang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China. .,College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Shi-He Luo
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Si-Hong Chen
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Xi-Ying Cao
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yong-Jun Zhou
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yan-Lan Lin
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yan-Ping Huo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
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5
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Rehberg N, Sommer GA, Drießen D, Kruppa M, Adeniyi ET, Chen S, Wang L, Wolf K, Tasch BOA, Ioerger TR, Zhu K, Müller TJJ, Kalscheuer R. Nature-Inspired (di)Azine-Bridged Bisindole Alkaloids with Potent Antibacterial In Vitro and In Vivo Efficacy against Methicillin-Resistant Staphylococcus aureus. J Med Chem 2020; 63:12623-12641. [PMID: 33103423 DOI: 10.1021/acs.jmedchem.0c00826] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Natural bisindole alkaloids such as Hyrtinadine A and Alocasin A, which are known to exhibit diverse bioactivities, provide promising chemical scaffolds for drug development. By optimizing the Masuda borylation-Suzuki coupling sequence, a library of various natural product-derived and non-natural (di)azine-bridged bisindoles was created. While unsubstituted bisindoles were devoid of antibacterial activity, 5,5'-chloro derivatives were highly active against methicillin-resistant Staphylococcus aureus (MRSA) and further Gram-positive pathogens at minimal inhibitory concentrations ranging from 0.20 to 0.78 μM. These compounds showed strong bactericidal killing effects but only moderate cytotoxicity against human cell lines. Furthermore, the two front-runner compounds 4j and 4n exhibited potent in vivo efficacy against MRSA in a mouse wound infection model. Although structurally related bisindoles were reported to specifically target pyruvate kinase in MRSA, antibacterial activity of 4j and 4n is independent of pyruvate kinase. Rather, these compounds lead to bacterial membrane permeabilization and cellular efflux of low-molecular-weight molecules.
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Affiliation(s)
- Nidja Rehberg
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Gereon A Sommer
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Daniel Drießen
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Marco Kruppa
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Emmanuel T Adeniyi
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Shang Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Lin Wang
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Karina Wolf
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
| | - Boris O A Tasch
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Thomas R Ioerger
- Department of Computer Science, Texas A&M University, 710 Ross St., College Station, Texas 77843, United States
| | - Kui Zhu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Thomas J J Müller
- Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich Heine University Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - Rainer Kalscheuer
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich Heine University Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
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Shaughnessy KH. Monodentate Trialkylphosphines: Privileged Ligands in Metal-catalyzed Crosscoupling Reactions. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200211114540] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phosphines are widely used ligands in transition metal-catalyzed reactions.
Arylphosphines, such as triphenylphosphine, were among the first phosphines to show
broad utility in catalysis. Beginning in the late 1990s, sterically demanding and electronrich
trialkylphosphines began to receive attention as supporting ligands. These ligands
were found to be particularly effective at promoting oxidative addition in cross-coupling
of aryl halides. With electron-rich, sterically demanding ligands, such as tri-tertbutylphosphine,
coupling of aryl bromides could be achieved at room temperature. More
importantly, the less reactive, but more broadly available, aryl chlorides became accessible
substrates. Tri-tert-butylphosphine has become a privileged ligand that has found application
in a wide range of late transition-metal catalyzed coupling reactions. This success
has led to the use of numerous monodentate trialkylphosphines in cross-coupling reactions. This review
will discuss the general properties and features of monodentate trialkylphosphines and their application in
cross-coupling reactions of C–X and C–H bonds.
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Affiliation(s)
- Kevin H. Shaughnessy
- Department of Chemistry & Biochemistry, The University of Alabama, Box 870336, Tuscaloosa, AL, 35487-0336, United States
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Lassalas P, Berini C, Rouchet JBEY, Hédouin J, Marsais F, Schneider C, Baudequin C, Hoarau C. Miyaura borylation/Suzuki-Miyaura coupling (MBSC) sequence of 4-bromo-2,4'-bithiazoles with halides: straightforward access to a heterocylic cluster of d-series of thiopeptide GE2270. Org Biomol Chem 2019; 16:526-530. [PMID: 29292462 DOI: 10.1039/c7ob02866k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, palladium-catalyzed Miyaura borylation of 4-bromo-2,4'-bithiazoles followed by Suzuki-Miyaura cross-coupling reaction (named the MBSC process) with (hetero)aryl- and alkenyl halides is reported. This methodology offers rapid access to various 2',4-disubstituted 2,4'-bithiazole features including naturally-occurring 4-alkenylated and 4-pyridinylated 2,4'-bithiazoles. To prove its application, a concise approach for the synthesis of a heterocyclic cluster of the thiopeptide d-series antibiotic GE2270 is reported through a late-stage MBSC strategy.
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Affiliation(s)
- Pierrik Lassalas
- Normandie University, COBRA, UMR 6014 et FR 3038, University Rouen; INSA Rouen; CNRS, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France.
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Kumar A, Rao MLN. Pot-economic synthesis of diarylpyrazoles and pyrimidines involving Pd-catalyzed cross-coupling of 3-trifloxychromone and triarylbismuth. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1565-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Sommer GA, Mataranga-Popa LN, Czerwieniec R, Hofbeck T, Homeier HHH, Müller TJJ, Yersin H. Design of Conformationally Distorted Donor-Acceptor Dyads Showing Efficient Thermally Activated Delayed Fluorescence. J Phys Chem Lett 2018; 9:3692-3697. [PMID: 29897780 DOI: 10.1021/acs.jpclett.8b01511] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A highly potent donor-acceptor biaryl thermally activated delayed fluorescence (TADF) dye is accessible by a concise two-step sequence employing two-fold Ullmann arylation and a sequentially Pd-catalyzed Masuda borylation-Suzuki arylation (MBSA). Photophysical investigations show efficient TADF at ambient temperature due to the sterical hindrance between the donor and acceptor moieties. The photoluminescence quantum yield amounts to ΦPL = 80% in toluene and 90% in PMMA arising from prompt and delayed fluorescence with decay times of 21 ns and 30 μs, respectively. From an Arrhenius plot, the energy gap Δ E(S1 - T1) between the lowest excited singlet S1 and triplet T1 state was determined to be 980 cm-1 (120 meV). A new procedure is proposed that allows us to estimate the intersystem crossing time to ∼102 ns.
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Affiliation(s)
- Gereon A Sommer
- Institut für Organische Chemie und Makromolekulare Chemie , Heinrich-Heine-Universität Düsseldorf , Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Larisa N Mataranga-Popa
- Institut für Physikalische Chemie , Universität Regensburg , Universitätsstr. 31 , D-93053 Regensburg , Germany
| | - Rafal Czerwieniec
- Institut für Physikalische Chemie , Universität Regensburg , Universitätsstr. 31 , D-93053 Regensburg , Germany
| | - Thomas Hofbeck
- Institut für Physikalische Chemie , Universität Regensburg , Universitätsstr. 31 , D-93053 Regensburg , Germany
| | - Herbert H H Homeier
- Institut für Physikalische Chemie , Universität Regensburg , Universitätsstr. 31 , D-93053 Regensburg , Germany
| | - Thomas J J Müller
- Institut für Organische Chemie und Makromolekulare Chemie , Heinrich-Heine-Universität Düsseldorf , Universitätsstrasse 1 , D-40225 Düsseldorf , Germany
| | - Hartmut Yersin
- Institut für Physikalische Chemie , Universität Regensburg , Universitätsstr. 31 , D-93053 Regensburg , Germany
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Noland WE, Kroll NJ, Huisenga MP, Yue RA, Lang SB, Klein ND, Tritch KJ. Crystal structure of (1S,2R,6R,7R,8S,12S)-4,10,17-triphenyl-15-thia-4,10-diaza-penta-cyclo[5.5.5.0(1,16).0(2,6).0(8,12)]hepta-deca-13,16-diene-3,5,9,11-tetrone p-xylene hemisolvate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:550-4. [PMID: 25552990 PMCID: PMC4257460 DOI: 10.1107/s1600536814025094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 11/16/2014] [Indexed: 11/23/2022]
Abstract
A novel meso bicyclo[2.2.2]octene-based compound was obtained from an attempted Diels–Alder reaction. It crystallizes from p-xylene as a hemisolvate. The title tetrone compound, C32H22N2O4S· 0.5C8H10, is the major product (50% yield) of an attempted Diels–Alder reaction of 2-(α-styryl)thiophene with N-phenylmaleimide (2 equivalents) in toluene. Recrystallization of the resulting powder from p-xylene gave the title hemisolvate; the p-xylene molecule is located about an inversion center. In the crystal, the primary tetrone contacts are between a carbonyl O atom and the four flagpole H atoms of the bicyclo[2.2.2]octene core, forming chains along [001].
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Affiliation(s)
- Wayland E Noland
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Neil J Kroll
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Matthew P Huisenga
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Ruixian A Yue
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Simon B Lang
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Nathan D Klein
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
| | - Kenneth J Tritch
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455-0431, USA
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Zi Y, Cai ZJ, Wang SY, Ji SJ. Synthesis of Isatins by I2/TBHP Mediated Oxidation of Indoles. Org Lett 2014; 16:3094-7. [DOI: 10.1021/ol501203q] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- You Zi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Zhong-Jian Cai
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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12
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Uberman PM, Pérez LA, Martín SE, Lacconi GI. Electrochemical synthesis of palladium nanoparticles in PVP solutions and their catalytic activity in Suzuki and Heck reactions in aqueous medium. RSC Adv 2014. [DOI: 10.1039/c3ra47854h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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