1
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Diekamp J, Seidensticker T. Synthesis Strategies towards Tagged Homogeneous Catalysts To Improve Their Separation. Angew Chem Int Ed Engl 2023; 62:e202304223. [PMID: 37167065 DOI: 10.1002/anie.202304223] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/11/2023] [Accepted: 05/11/2023] [Indexed: 05/13/2023]
Abstract
The recycling of homogeneous catalysts while keeping them in the homogeneous matrix is an ongoing challenge many reactions face if they are to find industrial applications. While a plethora of different synthetic approaches towards better, recyclable homogeneous catalysts exist, the literature shows a gap when one searches for a concise overview of the different catalyst modifications. This Review is designed to close that gap by summarising the existing synthesis pathways towards polar, non-polar, fluorous, and molecular-weight-enlarged catalysts and by examining their respective synthesis routes with a focus on modular and late-stage approaches. Furthermore, we map out the potential for a generally applicable tag library that allows straightforward catalyst modifications to tune them for each desired recycling strategy.
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Affiliation(s)
- Justus Diekamp
- TU Dortmund University, Department for Biochemical and Chemical Engineering, Laboratory of Industrial Chemistry, Emil-Figge-Straße 66, 44227, Dortmund, Germany
| | - Thomas Seidensticker
- TU Dortmund University, Department for Biochemical and Chemical Engineering, Laboratory of Industrial Chemistry, Emil-Figge-Straße 66, 44227, Dortmund, Germany
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2
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Singh A, Lynch R, Solomon J, Weaver JD, May AR. Development of novel fluor mop materials for remediation of perfluoroalkyl substances (PFAS) from groundwater. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130853. [PMID: 36709737 PMCID: PMC10002476 DOI: 10.1016/j.jhazmat.2023.130853] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/17/2023] [Accepted: 01/21/2023] [Indexed: 06/18/2023]
Abstract
In this study we synthesized a library of 12 novel adsorbent materials that utilize a chemically well-defined silica support for superior removal of PFAS from real groundwater from a contaminated United States Air Force base. The library of sorbents probed the importance of a fluorous, hydrophobic, and electrostatic components in the removal efficacy. The materials were assessed in batch studies with PFOA, PFOS, and PFBA and compared directly to GAC and Ion Exchange resin. Adsorption kinetics with PFOS were best fit to a pseudo-second order model and equilibrium data fit well to a Langmuir isotherm model. The results were also validated externally, and the best performing material removed greater than 90% of 8 PFAS tested and was able to be regenerated up to 5 cycles. The results provide a top performing material that with further testing can be used to clean up environmentally contaminated water and provide support for the theory that a fluorous component when combined with the electrostatic and hydrophobic components, imparts both enhanced PFAS selectivity and functional resilience to the material.
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Affiliation(s)
- Anuradha Singh
- Weaver Labs, 1110 S Innovation Way, #130, Stillwater, OK 74074, USA
| | - Richard Lynch
- Weaver Labs, 1110 S Innovation Way, #130, Stillwater, OK 74074, USA
| | - Jacob Solomon
- Weaver Labs, 1110 S Innovation Way, #130, Stillwater, OK 74074, USA
| | - Jimmie D Weaver
- Oklahoma State University, Department of Chemistry, 107 Physical Sciences, Stillwater, OK 74078, USA
| | - Alexa R May
- Weaver Labs, 1110 S Innovation Way, #130, Stillwater, OK 74074, USA.
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3
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Lu X, Luo Z, Huang R, Lo DC, Huang W. High-Throughput Platform for Novel Reaction Discovery. Chemistry 2022; 28:e202201421. [PMID: 35766989 PMCID: PMC11033702 DOI: 10.1002/chem.202201421] [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: 05/08/2022] [Indexed: 11/10/2022]
Abstract
Detecting the formation of new chemical bonds in high-throughput synthesis is limited by the efficiency and scalability of reaction product detection, as conventional methods for isolating product from reaction mixtures are time consuming and labor intensive. Here, we report a miniaturizable purification method that enables the rapid, high-throughput isolation of quaternary ammonium-tagged products from reaction mixtures with excellent purity using inexpensive equipment that easily can be set up in a typical organic chemistry laboratory. This novel purification technique enabled us to establish a high-throughput reaction discovery platform. We validated this platform in a screen of 1536 reactions, and one previously unreported transformation was identified.
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Affiliation(s)
- Xiao Lu
- Therapeutic Development Branch, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Zhiji Luo
- Therapeutic Development Branch, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Ruili Huang
- Chemical Genomics Branch, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Donald C. Lo
- Therapeutic Development Branch, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
| | - Wenwei Huang
- Therapeutic Development Branch, National Center for Advancing Translational Sciences (NCATS), National Institutes of Health (NIH), Rockville, MD 20850, USA
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4
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Wang Z, Zhang S, Chen Y, Zhang Z, Ma S. Covalent organic frameworks for separation applications. Chem Soc Rev 2020; 49:708-735. [PMID: 31993598 DOI: 10.1039/c9cs00827f] [Citation(s) in RCA: 523] [Impact Index Per Article: 130.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covalent organic frameworks (COFs) are an emerging class of crystalline porous polymers with highly tuneable structures and functionalities. COFs have been proposed as ideal materials for applications in the energy-intensive field of molecular separation due to their notable intrinsic features such as low density, exceptional stability, high surface area, and readily adjustable pore size and chemical environment. This review attempts to highlight the key advancements made in the synthesis of COFs for diverse separation applications such as water treatment or the separation of gas mixtures and organic molecules, including chiral and isomeric compounds. Methods proposed for the fabrication of COF-based columns and continuous membranes for practical applications are also discussed in detail. Finally, a perspective regarding the remaining challenges and future directions for COF research in the field of separation has also been presented.
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Affiliation(s)
- Zhifang Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
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5
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Kim C, Chung H. Oligo(ethylene glycol) Length Effect of Water-Soluble Ru-Based Olefin Metathesis Catalysts on Reactivity and Removability. J Org Chem 2018; 83:9787-9794. [PMID: 30092137 DOI: 10.1021/acs.joc.8b01312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A study of reaction kinetics and removal efficiency of a family of ruthenium (Ru)-based olefin metathesis catalysts containing ethylene-glycol-oligomer-tethered N-heterocyclic carbene (NHC) ligands has been carried out, with a focus on variation of ethylene glycol oligomer length. The length of ethylene glycol oligomer was precisely defined by sequential addition of repeating units. Due to the dual solubility of ethylene glycol oligomer, the produced catalyst was highly soluble in both aqueous and organic solvents (dichloromethane). In aqueous solution, the polarity increase with longer ethylene glycol oligomers enhanced the reactivity in homogeneous solution. The length of ethylene glycol oligomer did not significantly affect olefin metathesis rate in organic solution. Yet the removal efficiency of catalyst strongly relies on the length of ethylene glycol oligomer. A longer ethylene glycol oligomer demonstrated better catalyst removal efficiency. The tested catalyst removal method was aqueous extraction from organic solution using its higher water solubility property compared to its lower organic solvent (dichloromethane) solubility property. The results obtained from the aqueous extraction catalyst removal method demonstrated similar and/or better removal rates compared to previously reported host-guest catalyst removal methods.
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Affiliation(s)
- Cheoljae Kim
- Department of Chemical and Biomedical Engineering , Florida State University , 2525 Pottsdamer Street, Building A, Suite A131 , Tallahassee , Florida 32310 , United States
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering , Florida State University , 2525 Pottsdamer Street, Building A, Suite A131 , Tallahassee , Florida 32310 , United States
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6
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Kim C, Ondrusek BA, Chung H. Removable Water-Soluble Olefin Metathesis Catalyst via Host-Guest Interaction. Org Lett 2018; 20:736-739. [PMID: 29350047 DOI: 10.1021/acs.orglett.7b03871] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A highly removable N-heterocyclic carbene ligand for a transition-metal catalyst in aqueous media via host-guest interactions has been developed. Water-soluble adamantyl tethered ethylene glycol in the ligand leads a hydrophobic inclusion into the cavity of β-cyclodextrin. Ruthenium (Ru) olefin metathesis catalyst with this ligand demonstrated excellent performance in various metathesis reactions in water as well as in CH2Cl2, and removal of residual Ru was performed via filtration utilizing a host-guest interaction and extraction.
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Affiliation(s)
- Cheoljae Kim
- Department of Chemical and Biomedical Engineering, Florida State University , 2525 Pottsdamer Street, Building A, Suite A131, Tallahassee, Florida 32310, United States
| | - Brian A Ondrusek
- Department of Chemical and Biomedical Engineering, Florida State University , 2525 Pottsdamer Street, Building A, Suite A131, Tallahassee, Florida 32310, United States
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering, Florida State University , 2525 Pottsdamer Street, Building A, Suite A131, Tallahassee, Florida 32310, United States
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7
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Saini V, Khungar B. Recyclable imidazolium ion-tagged nickel catalyst for microwave-assisted C–S cross-coupling in water using sulfonyl hydrazide as the sulfur source. NEW J CHEM 2018. [DOI: 10.1039/c8nj00904j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Recyclable nickel(ii) catalyst promoted sulfenylation of aryl halides with sulfonyl hydrazides in water using microwave irradiation under mild conditions is reported.
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Affiliation(s)
- Vaishali Saini
- Department of Chemistry
- Birla Institute of Technology and Science Pilani Pilani Campus
- Pilani
- India
| | - Bharti Khungar
- Department of Chemistry
- Birla Institute of Technology and Science Pilani Pilani Campus
- Pilani
- India
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8
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Yoshida JI, Shimizu A, Hayashi R. Electrogenerated Cationic Reactive Intermediates: The Pool Method and Further Advances. Chem Rev 2017; 118:4702-4730. [PMID: 29077393 DOI: 10.1021/acs.chemrev.7b00475] [Citation(s) in RCA: 358] [Impact Index Per Article: 51.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemistry serves as a powerful method for generating reactive intermediates, such as organic cations. In general, there are two ways to use reactive intermediates for chemical reactions: (1) generation in the presence of a reaction partner and (2) generation in the absence of a reaction partner with accumulation in solution as a "pool" followed by reaction with a subsequently added reaction partner. The former approach is more popular because reactive intermediates are usually short-lived transient species, but the latter method is more flexible and versatile. This review focuses on the latter approach and provides a concise overview of the current methods for the generation and accumulation of cationic reactive intermediates as a pool using modern techniques of electrochemistry and their reactions with subsequently added nucleophilic reaction partners.
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Affiliation(s)
- Jun-Ichi Yoshida
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Akihiro Shimizu
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Ryutaro Hayashi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
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9
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Sasaki N, Nokami T, Itoh T. Synthesis of a TMG-chitotriomycin Precursor Based on Electrolyte-free Electrochemical Glycosylation Using an Ionic Liquid Tag. CHEM LETT 2017. [DOI: 10.1246/cl.170126] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Norihiko Sasaki
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552
| | - Toshiyuki Itoh
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552
- Center for Research on Green Sustainable Chemistry, Graduate School of Engineering, Tottori University, 4-101 Koyama-minami, Tottori 680-8552
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10
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Hasib-ur-Rahman M, Hamoudi S, Belkacemi K. Heterogeneous olefin-metathesis: Comparative perspective of the activity with respect to unsaturated fatty acid methyl esters. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22845] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Muhammad Hasib-ur-Rahman
- Department of Soil Sciences and Food Engineering; Université Laval, Quebec; QC G1V 0A6 Canada
- Centre in Green Chemistry and Catalysis (CGCC); Université Laval, Quebec; QC G1V 0A6 Canada
| | - Safia Hamoudi
- Department of Soil Sciences and Food Engineering; Université Laval, Quebec; QC G1V 0A6 Canada
- Centre in Green Chemistry and Catalysis (CGCC); Université Laval, Quebec; QC G1V 0A6 Canada
| | - Khaled Belkacemi
- Department of Soil Sciences and Food Engineering; Université Laval, Quebec; QC G1V 0A6 Canada
- Centre in Green Chemistry and Catalysis (CGCC); Université Laval, Quebec; QC G1V 0A6 Canada
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11
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Nakagawa C, Toyama M, Takeuchi R, Takahashi T, Tanaka H. Synthesis of [123I]-iodometomidate from a polymer-supported precursor with a large excluded volume. RSC Adv 2016. [DOI: 10.1039/c6ra00442c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report on the synthesis of [123I]-iodometomidate from a soluble polymer-supported precursor with a large extent volume. The precursor enabled the synthesis of the [123I]-iodometomidate with high quality without use of HPLC purification.
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Affiliation(s)
- Chika Nakagawa
- Department of Applied Chemistry
- Graduate School of Science and Engineering Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | | | - Ryota Takeuchi
- Department of Applied Chemistry
- Graduate School of Science and Engineering Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Takashi Takahashi
- Department of Applied Chemistry
- Graduate School of Science and Engineering Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Hiroshi Tanaka
- Department of Applied Chemistry
- Graduate School of Science and Engineering Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
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12
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Dhineshkumar J, Prabhu KR. An Efficient Tertiary Azidation of 1,3-Dicarbonyl Compounds in Water Catalyzed by Tetrabutylammonium Iodide. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501374] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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13
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Strašák T, Šťastná LČ, Bílková V, Skoupá V, Karban J, Cuřínová P, Čermák J. Synthesis and fluorophilicity of compounds with tris(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silyl substituent. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Hu D, Sun S, Yuan PQ, Zhao L, Liu T. Exploration of CO2-Philicity of Poly(vinyl acetate-co-alkyl vinyl ether) through Molecular Modeling and Dissolution Behavior Measurement. J Phys Chem B 2015; 119:12490-501. [PMID: 26332013 DOI: 10.1021/acs.jpcb.5b08393] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydrocarbon CO2-philes are of great interest for use in expanding CO2 applications as a green solvent. In this work, multiscale molecular modeling and dissolution behavior measurement were both applied to explore CO2-philicity of the poly(vinyl acetate) (PVAc)-based copolymer. Introduction of a favorable comonomer, i.e., vinyl ethyl ether (VEE), could significantly reduce the polymer-polymer interaction on the premise that the polymer-CO2 interaction was not weakened but enhanced. The ab initio calculated interaction of the model molecules with CO2 demonstrated that the ether group in VEE or VBE was the suitable CO2-philic segment. From the molecular dynamics (MD) simulations of polymer/CO2 systems, the interaction energy and Flory-Huggins parameter (χ12) of poly(VAc-alt-VEE)/CO2 supported that poly(VAc-alt-VEE) possessed better CO2-philicity than PVAc. The dissolution behaviors of the synthesized poly(VAc-co-alkyl vinyl ether) copolymers in CO2 showed the best CO2-phile had the VEE content of about 34 mol %. The MD simulations also indicated that the interaction of random poly(VAc-co-VEE) containing about 30 mol % VEE with CO2 was the strongest and the χ12 was the smallest in these polymer/CO2 systems. Not only could the VEE monomer reduce the polymer-polymer interaction, but it could also enhance the polymer-CO2 interaction with an optimized composition. Introducing a suitable comonomer with a certain composition might be a promising strategy to form the synergistic effect of polymer-polymer interaction and polymer-CO2 interaction for screening the hydrocarbon CO2-philes.
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Affiliation(s)
- Dongdong Hu
- State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Shaojun Sun
- State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Pei-Qing Yuan
- State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Ling Zhao
- State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Tao Liu
- State Key Laboratory of Chemical Engineering, Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
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15
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Tuba R, Xi Z, Bazzi HS, Gladysz JA. Phase‐Transfer Activation of Transition Metal Catalysts. Chemistry 2015; 21:15894-906. [DOI: 10.1002/chem.201502403] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Robert Tuba
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha (Qatar)
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, PO Box 286, 1519 Budapest (Hungary)
| | - Zhenxing Xi
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842‐3012 (USA)
| | - Hassan S. Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha (Qatar)
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842‐3012 (USA)
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16
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Hu D, Sun S, Yuan P, Zhao L, Liu T. Evaluation of CO2-philicity of poly(vinyl acetate) and poly(vinyl acetate-alt-maleate) copolymers through molecular modeling and dissolution behavior measurement. J Phys Chem B 2015; 119:3194-204. [PMID: 25599262 DOI: 10.1021/jp5130052] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Multiscale molecular modeling and dissolution behavior measurement were both used to evaluate the factors conclusive on the CO2-philicity of poly(vinyl acetate) (PVAc) homopolymer and poly(vinyl acetate-alt-maleate) copolymers. The ab initio calculated interaction energies of the candidate CO2-philic molecule models with CO2, including vinyl acetate dimer (VAc), dimethyl maleate (DMM), diethyl maleate (DEM), and dibutyl maleate (DBM), showed that VAc was the most CO2-philc segment. However, the cohesive energy density, solubility parameter, Flory-Huggins parameter, and radial distribution functions calculated by using the molecular dynamics simulations for the four polymer and polymer-CO2 systems indicated that poly(VAc-alt-DBM) had the most CO2-philicity. The corresponding polymers were synthesized by using free radical polymerization. The measurement of cloud point pressures of the four polymers in CO2 also demonstrated that poly(VAc-alt-DBM) had the most CO2-philicity. Although copolymerization of maleate, such as DEM or DBM, with PVAc reduced the polymer-CO2 interactions, the weakened polymer-polymer interaction increased the CO2-philicity of the copolymers. The polymer-polymer interaction had a significant influence on the CO2-philicity of the polymer. Reduction of the polymer-polymer interaction might be a promising strategy to prepare the high CO2-philic polymers on the premise that the strong polymer-CO2 interaction could be maintained.
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Affiliation(s)
- Dongdong Hu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology , Shanghai 200237, People's Republic of China
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17
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Koda Y, Terashima T, Sawamoto M. Fluorinated microgel star polymers as fluorous nanocapsules for the encapsulation and release of perfluorinated compounds. Polym Chem 2015. [DOI: 10.1039/c5py00113g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fluorinated microgel star polymers work as fluorous nanocapsules to efficiently capture and thermo-responsively release perfluorinated guest compounds.
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Affiliation(s)
- Yuta Koda
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Takaya Terashima
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto 615-8510
- Japan
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18
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Helmy S, Oh S, Leibfarth FA, Hawker CJ, Read de Alaniz J. Design and Synthesis of Donor–Acceptor Stenhouse Adducts: A Visible Light Photoswitch Derived from Furfural. J Org Chem 2014; 79:11316-29. [DOI: 10.1021/jo502206g] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sameh Helmy
- Department of Chemistry and Biochemistry and ‡Materials Department,
Materials Research
Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Saemi Oh
- Department of Chemistry and Biochemistry and ‡Materials Department,
Materials Research
Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Frank A. Leibfarth
- Department of Chemistry and Biochemistry and ‡Materials Department,
Materials Research
Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Craig J. Hawker
- Department of Chemistry and Biochemistry and ‡Materials Department,
Materials Research
Laboratory, University of California, Santa Barbara, California 93106, United States
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry and ‡Materials Department,
Materials Research
Laboratory, University of California, Santa Barbara, California 93106, United States
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19
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Koda Y, Terashima T, Sawamoto M. Fluorous Microgel Star Polymers: Selective Recognition and Separation of Polyfluorinated Surfactants and Compounds in Water. J Am Chem Soc 2014; 136:15742-8. [DOI: 10.1021/ja508818j] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yuta Koda
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takaya Terashima
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry,
Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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20
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Martins MAP, Frizzo CP, Tier AZ, Moreira DN, Zanatta N, Bonacorso HG. Update 1 of: Ionic Liquids in Heterocyclic Synthesis. Chem Rev 2014; 114:PR1-70. [DOI: 10.1021/cr500106x] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Marcos A. P. Martins
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Clarissa P. Frizzo
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Aniele Z. Tier
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Dayse N. Moreira
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Nilo Zanatta
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Helio G. Bonacorso
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
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Limberger J, Leal BC, Monteiro AL, Dupont J. Charge-tagged ligands: useful tools for immobilising complexes and detecting reaction species during catalysis. Chem Sci 2014; 6:77-94. [PMID: 28553458 PMCID: PMC5424467 DOI: 10.1039/c4sc02151g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 08/06/2014] [Indexed: 11/21/2022] Open
Abstract
A critical overview is presented on the use of charged tagged ligands (CTLs) as immobilising agents in organometallic catalysis and as probes for studying mechanisms through electrospray ionisation mass spectrometry (ESI-MS) based on the most recent literature.
In recent years, charge-tagged ligands (CTLs) have become valuable tools in organometallic catalysis. Insertion of an ionic side chain into the molecular skeleton of a known ligand has become a useful protocol for anchoring ligands, and consequently catalysts, in polar and ionic liquid phases. In addition, the insertion of a cationic moiety into a ligand is a powerful tool that can be used to detect reaction intermediates in organometallic catalysis through electrospray ionisation mass spectrometry (ESI-MS) experiments. The insertion of an ionic tag ensures the charge in the intermediates independently of the ESI-MS. For this reason, these ligands have been used as ionic probes in mechanistic studies for several catalytic reactions. Here, we summarise selected examples on the use of CTLs as immobilising agents in organometallic catalysis and as probes for studying mechanisms through ESI-MS.
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Affiliation(s)
- Jones Limberger
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Bárbara C Leal
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Adriano L Monteiro
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil
| | - Jairton Dupont
- Laboratory of Molecular Catalysis , Institute of Chemistry - UFRGS , Av. Bento Gonçalves 9500, 91501-970, CP 15003 , Porto Alegre , RS , Brazil .,School of Chemistry , University of Nottingham , University Park , Nottingham , NG7 2RD , UK .
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22
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Pictet-Spengler Reaction Using Ion-Exchange Resin as a Catalyst and Support for ‘Catch and Release’ Purification. Biosci Biotechnol Biochem 2014; 75:391-2. [DOI: 10.1271/bbb.100770] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Strašák T, Čermák J, Červenková Šťastná L, Sýkora J, Fajgar R. Cobalt(I) and cobalt(III) cyclopentadienyl complexes with new silicon-branched fluorous tags. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2013.12.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Cenci SM, Cox LR, Leeke GA. Ultrasound-induced emulsification of subcritical carbon dioxide/water with and without surfactant as a strategy for enhanced mass transport. ULTRASONICS SONOCHEMISTRY 2014; 21:401-408. [PMID: 23791428 DOI: 10.1016/j.ultsonch.2013.05.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/14/2013] [Accepted: 05/26/2013] [Indexed: 06/02/2023]
Abstract
Pulsed ultrasound was used to disperse a biphasic mixture of CO2/H2O in a 1 dm(3) high-pressure reactor at 30 °C/80 bar. A view cell positioned in-line with the sonic vessel allowed observation of a turbid emulsion which lasted approximately 30 min after ceasing sonication. Within the ultrasound reactor, simultaneous CO2-continuous and H2O-continuous environments were identified. The hydrolysis of benzoyl chloride was employed to show that at similar power intensities, comparable initial rates (1.6±0.3×10(-3) s(-1) at 95 W cm(-2)) were obtained with those reported for a 87 cm(3) reactor (1.8±0.2×10(-3) s(-1) at 105 W cm(-2)), demonstrating the conservation of the physical effects of ultrasound in high-pressure systems (emulsification induced by the action of acoustic forces near an interface). A comparison of benzoyl chloride hydrolysis rates and benzaldehyde mass transport relative to the non-sonicated, 'silent' cases confirmed that the application of ultrasound achieved reaction rates which were over 200 times faster, by reducing the mass transport resistance between CO2 and H2O. The versatility of the system was further demonstrated by ultrasound-induced hydrolysis in the presence of the polysorbate surfactant, Tween, which formed a more uniform CO2/H2O emulsion that significantly increased benzoyl chloride hydrolysis rates. Finally, pulse rate was employed as a means of slowing down the rate of hydrolysis, further illustrating how ultrasound can be used as a valuable tool for controlling reactions in CO2/H2O solvent mixtures.
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Affiliation(s)
- Steven M Cenci
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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25
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Yi WB, Ma JJ, Jiang LQ, Cai C, Zhang W. Synthesis and uses of fluorous and highly fluorinated macrocyclic and spherical molecules. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2013.10.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Abstract
The stability of fluorotelomer alcohols under basic conditions was studied. HF elimination across the CF2-CH2 junction is shown to be facilitated by an intramolecular hydrogen bond, while solvation is the key determinant in the stability of alcohols of various perfluoroalkyl lengths. Finally, fluorotelomer alcohols can be rendered kinetically stable if either the alcohol or the base has low solubility in the reaction medium.
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Affiliation(s)
- William B Tucker
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53705 USA
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27
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Kim S, Matsumoto M, Chiba K. Liquid-phase RNA synthesis by using alkyl-chain-soluble support. Chemistry 2013; 19:8615-20. [PMID: 23657898 DOI: 10.1002/chem.201300655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Indexed: 11/09/2022]
Abstract
Recent progress in the RNA therapeutics has increased demand for the synthesis of large quantities of oligoribonucleotides. The assembly of RNA oligomers relies mainly on solid-phase approaches. These allow rapid product purification and the ability to drive a target reaction to completion through the use of excess reagents. Despite the known advantages of solid-phase synthesis, some issues in the process remain to be addressed, such as low and limited scale, reagent accessibility, and the use of a very large excess of reagents. Herein, we report a highly efficient and practical method of liquid-phase synthesis of RNA oligomers by using alkyl-chain-soluble support. We demonstrate the utility of the liquid-phase method through 21-mer RNA synthesis on a gram scale.
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Affiliation(s)
- Shokaku Kim
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan.
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28
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Csóka T, Nemes A, Szabó D. Synthesis of optically active α-(nonafluoro-tert-butoxy)carboxylic acids. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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30
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TERASHIMA T. Functional Star Polymers via Living Radical Polymerization^|^mdash;Designer Functional Nanospaces. KOBUNSHI RONBUNSHU 2013. [DOI: 10.1295/koron.70.432] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Levick MT, Coote SC, Grace I, Lambert C, Turner ML, Procter DJ. Phase Tag-Assisted Synthesis of Benzo[b]carbazole End-Capped Oligothiophenes. Org Lett 2012; 14:5744-7. [DOI: 10.1021/ol302748h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew T. Levick
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Susannah C. Coote
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Iain Grace
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Colin Lambert
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - Michael L. Turner
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K., and Department of Physics, Lancaster University, Lancaster, LA1 4YB, U.K
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32
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Cui J, Chai DI, Miller C, Hao J, Thomas C, Wang J, Scheidt KA, Kozmin SA. Assembly of four diverse heterocyclic libraries enabled by Prins cyclization, Au-catalyzed enyne cycloisomerization, and automated amide synthesis. J Org Chem 2012; 77:7435-70. [PMID: 22860634 DOI: 10.1021/jo301061r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We describe a unified synthetic strategy for efficient assembly of four new heterocyclic libraries. The synthesis began by creating a range of structurally diverse pyrrolidinones or piperidinones. Such compounds were obtained in a simple one-flask operation starting with readily available amines, ketoesters, and unsaturated anhydrides. The use of tetrahydropyran-containing ketoesters, which were rapidly assembled by our Prins cyclization protocol, enabled efficient fusion of pyran and piperidinone cores. A newly developed Au(I)-catalyzed cycloisomerization of alkyne-containing enamides further expanded heterocyclic diversity by providing rapid entry into a wide range of bicyclic and tricyclic dienamides. The final stage of the process entailed diversification of each of the initially produced carboxylic acids using a fully automated platform for amide synthesis, which delivered 1872 compounds in high diastereomeric and chemical purity.
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Affiliation(s)
- Jiayue Cui
- Chicago Tri-Institutional Center for Chemical Methods and Library Development, Department of Chemistry, University of Chicago, Chicago, Illinois 60637, USA
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33
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Montroni E, Lombardo M, Quintavalla A, Trombini C, Gruttadauria M, Giacalone F. A Liquid-Liquid Biphasic Homogeneous Organocatalytic Aldol Protocol Based on the Use of a Silica Gel Bound Multilayered Ionic Liquid Phase. ChemCatChem 2012. [DOI: 10.1002/cctc.201200125] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Weberski MP, Chen C, Delferro M, Zuccaccia C, Macchioni A, Marks TJ. Suppression of β-Hydride Chain Transfer in Nickel(II)-Catalyzed Ethylene Polymerization via Weak Fluorocarbon Ligand–Product Interactions. Organometallics 2012. [DOI: 10.1021/om3002735] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Michael P. Weberski
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| | - Changle Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| | - Massimiliano Delferro
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce di Sotto, 8-06123 Perugia,
Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Università degli Studi di Perugia, Via Elce di Sotto, 8-06123 Perugia,
Italy
| | - Tobin J. Marks
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113,
United States
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35
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Binary fluorous tagging enables the synthesis and separation of a 16-stereoisomer library of macrosphelides. Nat Chem 2012; 4:124-9. [PMID: 22270645 PMCID: PMC3269761 DOI: 10.1038/nchem.1233] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 11/21/2011] [Indexed: 11/08/2022]
Abstract
Fluorous mixture synthesis minimizes the effort to synthesize small-molecule libraries by labelling the molecules rather than the reaction vessels. Reactants are labelled with fluorinated tags and products can later be demixed based on the fluorine content. A limit in the number of available tags can be overcome by using binary encoding so that a total of four tags can label uniquely a library of 16 compounds. This strategy, however, means that separation based on fluorine content alone is not possible. Here, we solve this problem by selectively removing one tag after an initial demixing step; a second demixing provides each individual compound. The usefulness of this strategy is demonstrated by the synthesis of a library that contains all 16 diastereomers of the natural products macrosphelides A and E. Macrosphelide D was not in this library, and so its assigned structure was incorrect. We determined its constitution by using NMR spectroscopy and its configuration by synthesizing four candidate stereoisomers.
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36
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Tuba R, Corrêa da Costa R, Bazzi HS, Gladysz JA. Phase Transfer Activation of Fluorous Analogs of Grubbs’ Second-Generation Catalyst: Ring-Opening Metathesis Polymerization. ACS Catal 2011. [DOI: 10.1021/cs200487j] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Robert Tuba
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - Rosenildo Corrêa da Costa
- Institut für Organische
Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Hassan S. Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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37
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Kumar AB, Anderson JM, Manetsch R. Design, synthesis and photoactivation studies of fluorous photolabels. Org Biomol Chem 2011; 9:6284-92. [PMID: 21785789 DOI: 10.1039/c1ob05748k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two fluorous diazirine photolabels were designed, synthesized and subjected to photoactivation studies. The photoactivation studies revealed an unexpected photoreaction when the fluorous tag was directly connected to the diazirine ring, leading to the formation of a fluorous alkene. The more efficient photolabel of the two was identified as a flexible precursor for target specific photoaffinity labels for fluorous proteomics by adding appropriate ligands depending on the target protein subset. As a proof of feasibility, mannose residues were added to the photolabel making it a potential photoaffinity label to tag proteins that bind mannose.
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Affiliation(s)
- Arun Babu Kumar
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, USA
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38
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Transfer hydrogenation of ketones catalyzed by PEG-armed ruthenium-microgel star polymers: microgel-core reaction space for active, versatile and recyclable catalysis. Polym J 2011. [DOI: 10.1038/pj.2011.52] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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39
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Koda Y, Terashima T, Nomura A, Ouchi M, Sawamoto M. Fluorinated Microgel-Core Star Polymers as Fluorous Compartments for Molecular Recognition. Macromolecules 2011. [DOI: 10.1021/ma201076y] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yuta Koda
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takaya Terashima
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Akihisa Nomura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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40
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Affiliation(s)
- Ana C. Albéniz
- IU CINQUIMA/Química Inorgánica, Universidad de Valladolid, 47071 Valladolid. Spain, Fax: +34‐983423013
| | - Nora Carrera
- IU CINQUIMA/Química Inorgánica, Universidad de Valladolid, 47071 Valladolid. Spain, Fax: +34‐983423013
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41
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Yang J, Dai L, Wang X, Chen Y. Di-p-nitrobenzyl azodicarboxylate (DNAD): an alternative azo-reagent for the Mitsunobu reaction. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Hutinec A, Rupčić R, Ziher D, Smith KS, Milhous W, Ellis W, Ohrt C, Schönfeld ZI. An automated, polymer-assisted strategy for the preparation of urea and thiourea derivatives of 15-membered azalides as potential antimalarial chemotherapeutics. Bioorg Med Chem 2011; 19:1692-701. [PMID: 21316974 DOI: 10.1016/j.bmc.2011.01.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2010] [Revised: 01/13/2011] [Accepted: 01/15/2011] [Indexed: 10/18/2022]
Abstract
A series of 15-membered azalide urea and thiourea derivatives has been synthesized and evaluated for their in vitro antimalarial activity against chloroquine-sensitive (D6), chloroquine/pyremethamine resistant (W2) and multidrug resistant (TM91C235) strains of Plasmodium falciparum. We have developed an effective automated synthetic strategy for the rapid synthesis of urea/thiourea libraries of a macrolide scaffold. Compounds have been synthesized using a solution phase strategy with overall yields of 50-80%. Most of the synthesized compounds had inhibitory effects. The top 10 compounds were 30-65 times more potent than azithromycin, an azalide with antimalarial activity, against all three strains.
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Affiliation(s)
- Antun Hutinec
- GlaxoSmithKline Research Centre Zagreb Ltd, Zagreb, Croatia.
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43
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Azuaje J, Coelho A, Maatougui AE, Blanco JM, Sotelo E. Supported p-toluenesulfonic acid as a highly robust and eco-friendly isocyanide scavenger. ACS COMBINATORIAL SCIENCE 2011; 13:89-95. [PMID: 21247131 DOI: 10.1021/co100035z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We document here the use of polymer-supported p-toluenesulfonic acid as a highly effective, robust, economical and eco-friendly isocyanide scavenger. The herein described strategy circumvent the intense and repulsive odor of volatile isocyanides, enabling simplified and odorless workup and purifications. The usefulness of the new scavengers has been validated in a set of diverse isocyanide-based organic transformations and this approach is also amenable to parallel synthesis techniques.
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Affiliation(s)
- Jhonny Azuaje
- Combinatorial Chemistry Unit (COMBIOMED), Institute of Industrial Pharmacy (IFI), University of Santiago de Compostela
| | - Alberto Coelho
- Combinatorial Chemistry Unit (COMBIOMED), Institute of Industrial Pharmacy (IFI), University of Santiago de Compostela
| | - Abdelaziz El Maatougui
- Combinatorial Chemistry Unit (COMBIOMED), Institute of Industrial Pharmacy (IFI), University of Santiago de Compostela
| | - José Manuel Blanco
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - Eddy Sotelo
- Combinatorial Chemistry Unit (COMBIOMED), Institute of Industrial Pharmacy (IFI), University of Santiago de Compostela
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela 15782, Spain
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44
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Terashima T, Ouchi M, Ando T, Sawamoto M. Oxidation of sec‐alcohols with Ru(II)‐bearing microgel star polymer catalysts via hydrogen transfer reaction: Unique microgel‐core catalysis. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24501] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Takaya Terashima
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku‐Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan
| | - Makoto Ouchi
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku‐Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan
| | - Tsuyoshi Ando
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku‐Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan
| | - Mitsuo Sawamoto
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku‐Katsura, Nishikyo‐ku, Kyoto 615‐8510, Japan
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45
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Coote SC, Quenum S, Procter DJ. Exploiting Sm(ii) and Sm(iii) in SmI2-initiated reaction cascades: application in a tag removal–cyclisation approach to spirooxindole scaffolds. Org Biomol Chem 2011; 9:5104-8. [DOI: 10.1039/c1ob05710c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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46
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Gaucher-Wieczorek FS, Maillard LT, Badet B, Durand P. Fluorous tagged N-hydroxy phthalimide for the parallel synthesis of O-aryloxyamines. ACTA ACUST UNITED AC 2010; 12:655-8. [PMID: 20831264 DOI: 10.1021/cc100098v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The parallel synthesis of O-aryloxyamines remains an unfulfilled need in the field of medicinal chemistry and fragment-based approaches. To fill this gap a solution-phase two-step process based on (1) a copper-catalyzed cross-coupling of aryl boronic acids with a fluorous tagged N-hydroxyphthalimide, and (2) a supported aminolysis was designed and optimized using Taguchi's method. A library of O-aryloxyamines was synthesized in high yields with high purity and diversity.
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Affiliation(s)
- Florence S Gaucher-Wieczorek
- Centre de recherches de Gif, Institut de Chimie des Substances Naturelles, UPR 2301-CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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47
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Zhang F, Wei M, Dong J, Zhou Y, Lu D, Gong Y, Yang X. A Recyclable Organocascade Reaction System: Stereoselective Precipitation of Optically Active cis-δ-Lactols with Quaternary Stereocenters during the Michael-Hemiacetalization Reaction. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000553] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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48
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Zolfigol MA, Mohammadpoor-Baltork I, Habibi D, Mirjalili BF, Bamoniri A. THE USE OF NAFION-H® AS AN EFFICIENT CATALYST FOR THE DEPROTECTION OF TRIMETHYLSILYL ETHERS TO THEIR CORRESPONDING ALCOHOLS UNDER MILD AND HETEROGENEOUS CONDITIONS. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500490474996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | | | - Davood Habibi
- a Chemistry Department, College of Science, Bu-Ali Sina University , Hamadan, Iran
| | | | - Abdolhamid Bamoniri
- a Chemistry Department, College of Science, Bu-Ali Sina University , Hamadan, Iran
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49
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Audin C, Daran JC, Deydier É, Manoury É, Poli R. New ferrocenyl P,O ligands with polar substituents. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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The importance of 1:1 and 1:2 metal–ligand species in chiral copper(II)–bis(oxazoline) complexes for catalytic activity. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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