1
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Khan R, Uygun ZO, Andreescu D, Andreescu S. Sensitive Detection of Perfluoroalkyl Substances Using MXene-AgNP-Based Electrochemical Sensors. ACS Sens 2024. [PMID: 38830812 DOI: 10.1021/acssensors.4c00776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) pose a significant threat to the environment due to their persistence, ability to bioaccumulate, and harmful effects. Methods to quantify PFAS rapidly and effectively are essential to analyze and track contamination, but measuring PFAS down to the ultralow regulatory levels is extremely challenging. Here, we describe the development of a low-cost sensor that can measure a representative PFAS, perfluorooctanesulfonic acid (PFOS), at the parts per quadrillion (ppq) level within 5 min. The method combines the ability of PFOS to bind to silver nanoparticles (AgNPs) embedded within a fluorine-rich Ti3C2-based multilayered MXene, which provides a large surface area and accessible binding sites for direct impedimetric detection. Fundamentally, we show that MXene-AgNPs are capable of binding PFOS and other long-chain PFAS compounds, though the synergistic action of AgNPs and MXenes via electrostatic and F-F interactions. This binding induced concentration-dependent changes in the charge-transfer resistance, enabling rapid and direct quantification with extremely high sensitivity and no response to interferences. The sensor displayed a linear range from 50 ppq to 1.6 ppt (parts per trillion) with an impressively low limit of detection of 33 ppq and a limit of quantification of 99 ppq, making this sensor a promising candidate for low-cost screening of the PFAS content in water samples, using a simple and inexpensive procedure.
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Affiliation(s)
- Reem Khan
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Zihni Onur Uygun
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
- Department of Medical Biochemistry, Faculty of Medicine, Kafkas University, Kars 36100, Turkey
| | - Daniel Andreescu
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Silvana Andreescu
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
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2
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Sui X, Wang C, Gutekunst WR. Sequestration of Ruthenium Residues via Efficient Fluorous-enyne Termination. Polym Chem 2023; 14:3160-3165. [PMID: 38269330 PMCID: PMC10805442 DOI: 10.1039/d3py00456b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The creation of polymers without metal contamination remains a significant challenge for metathesis-based polymerization techniques and has complicated applications in biomedical and electronic applications. This communication reports a new approach for the removal of ruthenium byproducts through the design of an enyne terminator for metathesis polymerization that contains a fluorous tag. Upon reaction of a living polymer chain with the enyne, the ruthenium center is captured as a stable sulfur-chelated complex that can be efficiently removed after a single filtration through a fluorous cartridge. Levels of ruthenium residues as determined by ICP-MS were found to depend on the monomer structure, eluting solvent, and the degree of polymerization targeted. Ruthenium residues were minimized to low ppm levels (4-75 ppm) for most samples examined and also led to the improved thermal stability of the final materials. This represents the most efficient single method for removal of ruthenium residues from metathesis polymerization products.
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Affiliation(s)
- Xuelin Sui
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlanta Drive NW, Atlanta, Georgia 30332, United States
| | - Chenxiao Wang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlanta Drive NW, Atlanta, Georgia 30332, United States
| | - Will R Gutekunst
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlanta Drive NW, Atlanta, Georgia 30332, United States
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3
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Kawazoe M, Ueda M, Yamada S, Konno T, Takano S, Nomura T. A novel terminal modification of perfluoropolyethers. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110049] [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]
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4
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Okamura T, Fujiki S, Iwabuchi Y, Kanoh N. Gold(i)-catalyzed Nicholas reaction with aromatic molecules utilizing a bifunctional propargyl dicobalt hexacarbonyl complex. Org Biomol Chem 2019; 17:8522-8526. [DOI: 10.1039/c9ob01348b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A benchtop-stable reagent for the catalytic Nicholas reaction with aromatic molecules was developed.
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Affiliation(s)
- Toshitaka Okamura
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Shogo Fujiki
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Yoshiharu Iwabuchi
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Naoki Kanoh
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
- Institute of Medicinal Chemistry
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5
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Fang C, Sobhani Z, Megharaj M, Naidu R. Electrochemical Proof of Fluorophilic Interaction among Fluoro-Carbon Chains. ELECTROANAL 2018. [DOI: 10.1002/elan.201800190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cheng Fang
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
| | - Zahra Sobhani
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
| | - Mallavarapu Megharaj
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
| | - Ravi Naidu
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
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6
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Fang C, Zhang X, Dong Z, Wang L, Megharaj M, Naidu R. Smartphone app-based/portable sensor for the detection of fluoro-surfactant PFOA. CHEMOSPHERE 2018; 191:381-388. [PMID: 29049961 DOI: 10.1016/j.chemosphere.2017.10.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/06/2017] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
We developed a smartphone app-based monitoring tool for the detection of anionic surfactants (AS), including perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). Akin to the methylene blue active substances (MBAS), liquid-phase extraction (LPE) is employed to extract the hydrophobic ion-pair of dye (ethyl violet)-AS to an organic phase (ethyl acetate). The colour (RGB) of the organic phase is read using a smartphone camera with the help of a reading kit. The value of RGB is carefully corrected and linked to the concentration of ASs with a standard deviation of <10% in the 10-1000 ppb (part per billion) range. In order to avoid the interference arising from inorganic anions (such as those found in tap water and groundwater), the water sample is pre-treated either by solid-phase extraction (SPE), which takes ∼30 min, or by dual liquid-phase extraction (dual-LPE, developed by us), which takes ∼5 min. In the latter case, the organic phase of the first LPE (equilibrium with water sample) is transferred and subjected to a second LPE (equilibrium with Milli-Q water) to remove any potential background interference. In the meantime, SPE can also pre-concentrate ASs at 100-1000 times (in volume) to benefit the sensitivity. Consequently, our smartphone app can detect PFOA spiked in tap/groundwater with an LOD of 10 ppb (∼12 nM, dual-LPE of ∼5 min), or 0.5 ppb (∼1.2 nM, SPE of ∼3 h), suggesting that it has the potential to succeed as a pre-screening tool for on-site application and in common laboratory tests.
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Affiliation(s)
- Cheng Fang
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW 2308, Australia.
| | - Xian Zhang
- Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Zhaomin Dong
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Liang Wang
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Mallavarapu Megharaj
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, University of Newcastle, Callaghan, NSW 2308, Australia
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7
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Fang C, Megharaj M, Naidu R. Electrochemical Studies on Self-assembled Monolayer (SAM) Upon Exposure to Anionic Surfactants: PFOA, PFOS, SDS and SDBS. ELECTROANAL 2017. [DOI: 10.1002/elan.201700108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cheng Fang
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
| | - Mallavarapu Megharaj
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
| | - Ravi Naidu
- Cooperative Research Centre for Contamination Assessment and Remediation of the Environment (CRC CARE); University of Newcastle; Callaghan NSW 2308 Australia
- Global Centre for Environmental Remediation (GCER); University of Newcastle; Callaghan NSW 2308 Australia
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8
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Fang C, Megharaj M, Naidu R. Electrochemical switch on-off response of a self-assembled monolayer (SAM) upon exposure to perfluorooctanoic acid (PFOA). J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.12.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Fang C, Dharmarajan R, Megharaj M, Naidu R. Gold nanoparticle-based optical sensors for selected anionic contaminants. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2016.10.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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10
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Fukuda K, Tojino M, Goto K, Dohi H, Nishida Y, Mizuno M. Preparation of acid-resistant heavy fluorous tags for recycling in synthetic systems. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Porel M, Alabi CA. Sequence-Defined Polymers via Orthogonal Allyl Acrylamide Building Blocks. J Am Chem Soc 2014; 136:13162-5. [DOI: 10.1021/ja507262t] [Citation(s) in RCA: 158] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mintu Porel
- School of Chemical and Biomolecular
Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Christopher A. Alabi
- School of Chemical and Biomolecular
Engineering, Cornell University, Ithaca, New York 14853, United States
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12
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Niu H, Wang S, Zhou Z, Ma Y, Ma X, Cai Y. Sensitive Colorimetric Visualization of Perfluorinated Compounds Using Poly(ethylene glycol) and Perfluorinated Thiols Modified Gold Nanoparticles. Anal Chem 2014; 86:4170-7. [DOI: 10.1021/ac403406d] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Hongyun Niu
- State Key Laboratory
of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Saihua Wang
- State Key Laboratory
of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Urban
and Environmental Science, Northeast Normal University, Changchun, Jilin Province China
| | - Zhen Zhou
- State Key Laboratory
of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yurong Ma
- School of Environmental
Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province China
| | - Xunfeng Ma
- School of Urban
and Environmental Science, Northeast Normal University, Changchun, Jilin Province China
| | - Yaqi Cai
- State Key Laboratory
of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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13
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Yan XQ, Shen QJ, Zhao XR, Gao HY, Pang X, Jin WJ. Halogen bonding: A new retention mechanism for the solid phase extraction of perfluorinated iodoalkanes. Anal Chim Acta 2012; 753:48-56. [DOI: 10.1016/j.aca.2012.09.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 08/24/2012] [Accepted: 09/15/2012] [Indexed: 10/27/2022]
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14
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Kasuya MCZ, Nakano S, Katayama R, Hatanaka K. Evaluation of the hydrophobicity of perfluoroalkyl chains in amphiphilic compounds that are incorporated into cell membrane. J Fluor Chem 2011. [DOI: 10.1016/j.jfluchem.2011.01.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Lehmler HJ, Telu S, Vyas SM, Shaikh NS, Rankin SE, Knutson BL, Parkin S. Synthesis and Solid State Structure of Fluorous Probe Molecules for Fluorous Separation Applications. Tetrahedron 2010; 66:2561-2569. [PMID: 20305832 PMCID: PMC2840617 DOI: 10.1016/j.tet.2010.02.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A series of colored hydrocarbon and fluorocarbon tagged 1-fluoro-4-alkylamino-anthraquinones and 1,4-bis-alkylamino-anthraquinone probe molecules were synthesized from a (fluorinated) alkyl amine and 1,4-difluoroanthraquinone to aid in the development of fluorous separation applications. The anthraquinones displayed stacking of the anthraquinone tricycle and interdigitation of the (fluorinated) alkyl chains in the solid state. Furthermore, intramolecular N-H···O hydrogen bonds forced the hydrocarbon and fluorocarbon tags into a conformation pointing away from the anthraquinone tricycle, with the angle of the tricycle plane normal and the main (fluorinated) alkyl vector ranging from 1 to 39°. Separation of the probe molecules on fluorous silica gel showed that the degree of fluorination of the probe molecules plays only a minor role with most eluents (e.g., hexane-ethyl acetate and methyl nonafluorobutyl ethers-ethyl acetate). However, toluene as eluent caused a pronounced separation by degree of fluorination for fluorocarbon, but not hydrocarbon tagged probe molecules on both silica gel and fluorous silica gel. These studies suggest that hydrocarbon and fluorocarbon tagged anthraquinones are useful probe molecules for the development of laboratory scale fluorous separation applications.
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Affiliation(s)
- H-J Lehmler
- Department of Occupational and Environmental Health, University of Iowa, College of Public Health, Iowa City, IA 52242, USA
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16
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Abstract
Very few molecules with biological origins contain the element fluorine. Nature's inability to incorporate fluorine into biomolecules is related to the low concentration of free fluoride in sea and surface water. However, judicious introduction of fluorine into proteins, nucleic acids, lipids and carbohydrates has allowed mechanistic scrutiny of enzyme catalysis, control of protein oligomerization in membranes, clustered display of ligands on surfaces of living cells, and in increasing the protease stability of protein and peptide therapeutics.
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Affiliation(s)
- Gizem Akçay
- Department of Chemistry, Tufts University, Medford, MA 02155
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17
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Eignerová B, Slavíková B, Buděšínský M, Dračínský M, Klepetářová B, Št’astná E, Kotora M. Synthesis of Fluorinated Brassinosteroids Based on Alkene Cross-Metathesis and Preliminary Biological Assessment. J Med Chem 2009; 52:5753-7. [DOI: 10.1021/jm900495f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Barbara Eignerová
- Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Barbora Slavíková
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Blanka Klepetářová
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Eva Št’astná
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
| | - Martin Kotora
- Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University in Prague, Hlavova 8, 128 43 Prague 2, Czech Republic
- Institute of Organic Chemistry and Biochemistry AS CR, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic
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18
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Pirrung MC, Ghorai S, Ibarra-Rivera TR. Multicomponent reactions of convertible isonitriles. J Org Chem 2009; 74:4110-7. [PMID: 19408909 DOI: 10.1021/jo900414n] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new family of unsaturated isonitriles has been prepared by the base-promoted ring-opening of oxazoles, offering an alternative to the conventional formamide dehydration route. These compounds undergo the full complement of multicomponent reactions for which isonitriles are known and offer the desirable trait of giving amide products that readily participate in acyl substitution reactions (hence, they are convertible). Moreover, they do not have the objectionable odors for which isonitriles are typically known, making them more accessible as reagents for organic synthesis. One focus of the work is isonitriles bearing perfluorinated alkyl groups that enable the ready separation of such reagents from nonfluorinated reaction products using the "light" fluorous method of fluorous solid-phase extraction.
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Affiliation(s)
- Michael C Pirrung
- Department of Chemistry, University of California, Riverside, California 92521-0403, USA.
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19
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Dobbs AP, Jones P, Penny MJ, Rigby SE. Light-fluorous TEMPO: reagent, spin trap and stable free radical. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.04.078] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Sancho AG, Wang X, Sui B, Curran D. Comparison of the Relative Reactivities of the Triisopropylsilyl Group With Two Fluorous Analogs. Adv Synth Catal 2009; 351:1035-1040. [PMID: 20160880 DOI: 10.1002/adsc.200900061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The relative stabilities of two fluorous analogs, diisopropyl(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)silyl and diisopropyl-(4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-heptadeca-fluoroundecyl)silyl [C(8)F(17)(CH(2))(n)Si(i-Pr)(2), where n = 2 or 3], of the standard triisopropylsilyl (TIPS) group are compared in the setting of alcohol protection. The fluorous silyl groups can be installed under standard conditions in comparable yields to the TIPS group, but the derived fluorous silyl ethers are more labile than TIPS ethers towards cleavage by both acids and fluoride.
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21
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Candeias NR, Branco LC, Gois PMP, Afonso CAM, Trindade AF. More Sustainable Approaches for the Synthesis of N-Based Heterocycles. Chem Rev 2009; 109:2703-802. [DOI: 10.1021/cr800462w] [Citation(s) in RCA: 292] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nuno R. Candeias
- Centro de Química-Física Molecular (CQFM) and Institute of Nanosciences and Nanotechnology (IN), Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, 1049-001 Lisboa, Portugal, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal, and iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Luís C. Branco
- Centro de Química-Física Molecular (CQFM) and Institute of Nanosciences and Nanotechnology (IN), Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, 1049-001 Lisboa, Portugal, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal, and iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Pedro M. P. Gois
- Centro de Química-Física Molecular (CQFM) and Institute of Nanosciences and Nanotechnology (IN), Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, 1049-001 Lisboa, Portugal, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal, and iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Carlos A. M. Afonso
- Centro de Química-Física Molecular (CQFM) and Institute of Nanosciences and Nanotechnology (IN), Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, 1049-001 Lisboa, Portugal, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal, and iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
| | - Alexandre F. Trindade
- Centro de Química-Física Molecular (CQFM) and Institute of Nanosciences and Nanotechnology (IN), Departamento de Engenharia Química e Biológica, Instituto Superior Técnico, 1049-001 Lisboa, Portugal, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Portugal, and iMed.UL, Faculdade de Farmácia da Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal
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22
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Affiliation(s)
- Wei Zhang
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125
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23
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Dobbs AP, Penny MJ, Jones P. Novel light-fluorous TEMPO reagents and their application in oxidation reactions. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.09.092] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Abstract
The article summarizes a lecture presented at the American Chemical Society Symposium for the 2008 Award for Creative Work in Fluorine Chemistry on April 7, 2008. A high level, historical overview of work in the fluorous field at the University of Pittsburgh is presented.
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Affiliation(s)
- Dennis P Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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25
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Eignerová B, Dračínský M, Kotora M. Perfluoroalkylation through Cross-Metathesis between Alkenes and (Perfluoroalkyl)propenes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800230] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wu X, Gorden AE. 2-Quinoxalinol salen ligands incorporated into functionalized resins for selective solid-phase extraction of copper(II). Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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del Pozo C, Keller AI, Nagashima T, Curran DP. Amide Bond Formation with a New Fluorous Carbodiimide: Separation by Reverse Fluorous Solid-Phase Extraction. Org Lett 2007; 9:4167-70. [PMID: 17887689 DOI: 10.1021/ol701631m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new fluorous carbodiimide is introduced along with a convenient procedure for amide coupling reactions. Reactions of acids and amines under standard conditions for carbodiimide couplings, followed by simple reverse fluorous solid-phase extraction (FSPE) over standard silica gel, provide the target amide products in good yields and purities. The use of HFE-7100 as a fluorous solvent is crucial for the success of the reverse FSPE.
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Affiliation(s)
- Carlos del Pozo
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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Affiliation(s)
- Wei Zhang
- Fluorous Technologies, Inc., University of Pittsburgh Applied Research Center, 970 William Pitt Way, Pittsburgh, PA 15238, USA
| | - Dennis P. Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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Omote M, Nishimura Y, Sato K, Ando A, Kumadaki I. New axially dissymmetric ligand recoverable with fluorous solvent. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.063] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Francis-McIntyre S. Association of Biomolecular Resource Facilities 2005 meeting. Biomolecular technologies: discovery to hypothesis. Expert Rev Proteomics 2005; 2:153-5. [PMID: 15892560 DOI: 10.1586/14789450.2.2.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sue Francis-McIntyre
- University of Manchester Michael Barber, Centre for Mass Spectrometry, School of Chemistry, Faraday Building, Manchester, M60 1QD UK.
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Yu K, Sommer W, Richardson J, Weck M, Jones C. Evidence that SCS Pincer Pd(II) Complexes are only Precatalysts in Heck Catalysis and the Implications for Catalyst Recovery and Reuse. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200404264] [Citation(s) in RCA: 256] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Five-membered ring systems: with O & N atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80333-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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