1
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Nakazono Y, Inoue R, Sumitani R, Mochida T. Solvent-free transformation of protic ionic liquids into zwitterions. Chem Commun (Camb) 2024; 60:5711-5714. [PMID: 38738841 DOI: 10.1039/d4cc01345j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
We synthesized several protic ionic liquids (ILs) composed of onium cations and the (trifluoromethylsulfonyl)(vinylsulfonyl)amide anion. The addition of a base catalytically facilitated their transformation into zwitterions (ZIs) under solvent-free conditions, which is a convenient method for synthesizing ZIs from ILs.
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Affiliation(s)
- Yosuke Nakazono
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan.
| | - Ryota Inoue
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan.
| | - Ryo Sumitani
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan.
| | - Tomoyuki Mochida
- Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan.
- Research Center for Membrane and Film Technology, Kobe University, Rokkodai, Nada, Kobe, Hyogo 657-8501, Japan
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2
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Chen X, Soria-Carrera H, Zozulia O, Boekhoven J. Suppressing catalyst poisoning in the carbodiimide-fueled reaction cycle. Chem Sci 2023; 14:12653-12660. [PMID: 38020366 PMCID: PMC10646924 DOI: 10.1039/d3sc04281b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
In biology, cells regulate the function of molecules using catalytic reaction cycles that convert reagents with high chemical potential (fuel) to waste molecules. Inspired by biology, synthetic analogs of such chemical reaction cycles have been devised, and a widely used catalytic reaction cycle uses carboxylates as catalysts to accelerate the hydration of carbodiimides. The cycle is versatile and easy to use, so it is widely applied to regulate motors, pumps, self-assembly, and phase separation. However, the cycle suffers from side reactions, especially the formation of N-acylurea. In catalytic reaction cycles, side reactions are disastrous as they decrease the fuel's efficiency and, more importantly, destroy the molecular machinery or assembling molecules. Therefore, this work tested how to suppress N-acylurea by screening precursor concentration, its structure, carbodiimide structure, additives, temperature, and pH. It turned out that the combination of low temperature, low pH, and 10% pyridine as a fraction of the fuel could significantly suppress the N-acylurea side product and keep the reaction cycle highly effective to regulate successful assembly. We anticipate that our work will provide guidelines for using carbodiimide-fueled reaction cycles to regulate molecular function and how to choose optimal conditions.
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Affiliation(s)
- Xiaoyao Chen
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Héctor Soria-Carrera
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Oleksii Zozulia
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
| | - Job Boekhoven
- Department of Chemistry, School of Natural Science, Technical University of Munich Lichtenbergstrasse 4 85748 Garching bei München Germany
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3
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Thankan RS, Thomas E, Purushottamachar P, Weber DJ, Njar VCO. Salinization Dramatically Enhance the Anti-Prostate Cancer Efficacies of AR/AR-V7 and Mnk1/2 Molecular Glue Degraders, Galeterone and VNPP433-3β Which Outperform Docetaxel and Enzalutamide in CRPC CWR22Rv1 Xenograft Mouse Model. Bioorg Chem 2023; 139:106700. [PMID: 37392559 PMCID: PMC10528634 DOI: 10.1016/j.bioorg.2023.106700] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/16/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Galeterone, 3β-(hydroxy)-17-(1H-benzimidazole-1-yl)androsta-5,16-diene (Gal, 1) and VNPP433-3β, 3β-(1H-imidazole-1-yl-17-(1H-benzimidazole-1-yl)androsta-5,16-diene (2) are potent molecular glue degrader modulators of AR/AR-V7 and Mnk1/2-eIF4E signaling pathways, and are promising Phase 3 and Phase 1 drug candidates, respectively. Because appropriate salts can be utilized to create new chemical entities with enhanced aqueous solubility, in vivo pharmacokinetics, and enhanced in vitro and in vivo efficacies, the monohydrochloride salt of Gal (3) and the mono- and di-hydrochlorides salts of compound 2, compounds 4 and 5, respectively, were synthesized. The salts were characterized using 1H NMR, 13C NMR and HRMS analyses. Compound 3 displayed enhanced in vitro antiproliferative activity (7.4-fold) against three prostate cancer cell lines but surprisingly decreased plasma exposure in the pharmacokinetics study. The antiproliferative activities of the compound 2 salts (4 and 5) were equivalent to that of compound 2, but their oral pharmacokinetic profiles were significantly enhanced. Finally, and most importantly, oral administration of the parent compounds (1 and 2) and their corresponding salts (3, 4 and 5) caused dose-dependent potent inhibition/regression of aggressive and difficult-to-treat CWR22Rv1 tumor xenografts growth, with no apparent host toxicities and were highly more efficacious than the blockbuster FDA-approved prostate cancer drugs, Enzalutamide (Xtandi) and Docetaxel (Taxotere). Thus, the HCl salts of Gal (3) and VNPP433-3β (4 and 5) are excellent orally bioavailable candidates for clinical development.
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Affiliation(s)
- Retheesh S Thankan
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc. 801 West Baltimore Street, Suite 502J, Baltimore, MD 21201, USA.
| | - Elizabeth Thomas
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA.
| | - Puranik Purushottamachar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc. 801 West Baltimore Street, Suite 502J, Baltimore, MD 21201, USA.
| | - David J Weber
- The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc. 801 West Baltimore Street, Suite 502J, Baltimore, MD 21201, USA.
| | - Vincent C O Njar
- Department of Pharmacology, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; The Center for Biomolecular Therapeutics, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, 685 West Baltimore Street, Baltimore, MD 21201, USA; Isoprene Pharmaceuticals, Inc. 801 West Baltimore Street, Suite 502J, Baltimore, MD 21201, USA.
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4
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Mhasni O, Bouajila J, Rezgui F. Metal catalyst-free N-allylation/alkylation of imidazole and benzimidazole with Morita-Baylis-Hillman (MBH) alcohols and acetates. Beilstein J Org Chem 2023; 19:1251-1258. [PMID: 37674521 PMCID: PMC10477972 DOI: 10.3762/bjoc.19.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/24/2023] [Indexed: 09/08/2023] Open
Abstract
A highly α-regioselective N-nucleophilic allylic substitution of cyclic MBH alcohols and acetates with imidazole or benzimidazole, in toluene at reflux with an azeotropic distillation, was successfully carried out with no catalysts or additives, affording the corresponding N-substituted imidazole derivatives in good yields. On the other hand, in refluxing toluene or methanol, the aza-Michael addition of imidazole onto acyclic MBH alcohols was performed using DABCO as an additive, leading to the corresponding 1,4-adducts in 70-84% yields.
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Affiliation(s)
- Olfa Mhasni
- Laboratory of Materials, Treatement and Analysis LMTA, LR 15 INRAP 03, National Institute of Research and Physico-Chemical Analysis (INRAP), Biotechpôle Sidi Thabet 2020, Tunisia
| | - Jalloul Bouajila
- Paul Sabatier University, Toulouse 3, Laboratoire de Génie Chimique UMR 5503 Toulouse, France
| | - Farhat Rezgui
- University of Tunis El Manar, Laboratory of Organic Chemistry, Faculty of Sciences, Campus, 2092 Tunis, Tunisia
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5
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Schrage BR, Frkonja-Kuczin A, Zhang B, Hobbs MS, Chen WY, Boika A, Ziegler CJ. Pyridinium ferrocene sulfonate salts: Highly soluble materials for electrochemical applications. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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6
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Livesley S, Sterling AJ, Robertson CM, Goundry WRF, Morris JA, Duarte F, Aïssa C. Electrophilic Activation of [1.1.1]Propellane for the Synthesis of Nitrogen‐Substituted Bicyclo[1.1.1]pentanes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sarah Livesley
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
| | - Alistair J. Sterling
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Craig M. Robertson
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
| | - William R. F. Goundry
- Early Chemical Development Pharmaceutical Sciences, R&D AstraZeneca Macclesfield SK10 2NA UK
| | - James A. Morris
- Syngenta International Research Centre Bracknell Berkshire RG42 6EY UK
| | - Fernanda Duarte
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Christophe Aïssa
- Department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD UK
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7
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Penn KR, Anders EJ, Lindsay VNG. Expedient Synthesis of Bis(imidazolium) Dichloride Salts and Bis(NHC) Complexes from Imidazoles Using DMSO as a Key Polar Additive. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kyle R. Penn
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Evan J. Anders
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Vincent N. G. Lindsay
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
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8
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Kagho MD, Hintersatz H, Ihle A, Zeng H, Schrey H, Colisi W, Klahn P, Stadler M, Bruhn C, Rüffer T, Lang H, Banert K. Total Synthesis via Biomimetic Late-Stage Heterocyclization: Assignment of the Relative Configuration and Biological Evaluation of the Nitraria Alkaloid (±)-Nitrabirine. J Org Chem 2021; 86:14903-14914. [PMID: 34570972 DOI: 10.1021/acs.joc.1c01650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The racemic total synthesis of nitrabirine (5) together with its previously undescribed epimer 2-epi nitrabirine (5') is accomplished via a six-step route based on a biomimetic late-stage heterocyclization. This allowed the assignment of the relative configuration of nitrabirine by the lanthanide-induced shifts (LIS) experiment, which was later on confirmed by X-ray diffraction of obtained single crystals. Furthermore, oxidation studies demonstrated that the direct N-oxidation of nitrabirine does not yield nitrabirine N-oxide as reported earlier. In contrast, the reaction of hydrogen peroxide with nitrabirine (5) yields the salt 24', whereas 2-epi nitrabirine (5') surprisingly leads to a previously uncharacterized product 22 under the same conditions. Finally, a Fischer indole reaction gave access to novel tetracyclic nitrabirine derivatives 26a-d. A comprehensive biological evaluation of nitrabirine (5), 2-epi nitrabirine (5'), and all derivatives synthesized in this study revealed general biofilm dispersal effects against Candida albicans. Moreover, specific compounds showed moderate antibacterial activities as well as potent cytotoxic activities.
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Affiliation(s)
- Mervic D Kagho
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany.,Organic Chemistry, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Helen Hintersatz
- Organic Chemistry, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Andreas Ihle
- Organic Chemistry, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Haoxuan Zeng
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Hedda Schrey
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Wera Colisi
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Philipp Klahn
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), Partner Site Hannover-Braunschweig, Inhoffenstraße 7, 38124 Braunschweig, Germany.,Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106 Braunschweig, Germany
| | - Clemens Bruhn
- Institut für Chemie und CINSaT, Universität Kassel, Heinrich-Plett-Strasse 40, 34132 Kassel, Germany
| | - Tobias Rüffer
- Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Heinrich Lang
- Inorganic Chemistry, Faculty of Natural Sciences, Institute of Chemistry, Technische Universität Chemnitz, 09107 Chemnitz, Germany
| | - Klaus Banert
- Organic Chemistry, Technische Universität Chemnitz, Straße der Nationen 62, 09111 Chemnitz, Germany
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9
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Gou H, Zhao Y, Zhou Y, Wei W, Fei X, Li X, Liu X. Effects of different imidazole accelerators on curing behavior and cross‐linked network of epoxy resin/phenolic resin/benzoxazine ternary system. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Haolan Gou
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
| | - Yingying Zhao
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
| | - Yanglong Zhou
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
| | - Wei Wei
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
| | - Xiaoma Fei
- Department of Science and Technology Wuxi Chuangda Advanced Materials Co., Ltd. Wuxi Jiangsu P. R. China
| | - Xiaojie Li
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
| | - Xiaoya Liu
- School of Chemical and Material Engineering Jiangnan University Wuxi Jiangsu P. R. China
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10
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Livesley S, Sterling AJ, Robertson CM, Goundry WRF, Morris JA, Duarte F, Aïssa C. Electrophilic Activation of [1.1.1]Propellane for the Synthesis of Nitrogen-Substituted Bicyclo[1.1.1]pentanes. Angew Chem Int Ed Engl 2021; 61:e202111291. [PMID: 34705316 PMCID: PMC9299141 DOI: 10.1002/anie.202111291] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Indexed: 01/22/2023]
Abstract
Strategies commonly used for the synthesis of functionalised bicyclo[1.1.1]pentanes (BCP) rely on the reaction of [1.1.1]propellane with anionic or radical intermediates. In contrast, electrophilic activation has remained a considerable challenge due to the facile decomposition of BCP cations, which has severely limited the applications of this strategy. Herein, we report the electrophilic activation of [1.1.1]propellane in a halogen bond complex, which enables its reaction with electron‐neutral nucleophiles such as anilines and azoles to give nitrogen‐substituted BCPs that are prominent motifs in drug discovery. A detailed computational analysis indicates that the key halogen bonding interaction promotes nucleophilic attack without sacrificing cage stabilisation. Overall, our work rehabilitates electrophilic activation of [1.1.1]propellane as a valuable strategy for accessing functionalised BCPs.
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Affiliation(s)
- Sarah Livesley
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Alistair J Sterling
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Craig M Robertson
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - William R F Goundry
- Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca, Macclesfield, SK10 2NA, UK
| | - James A Morris
- Syngenta, International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Christophe Aïssa
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
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11
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Zhong F, Alden SL, Hughes RP, Pletneva EV. Comparing Properties of Common Bioinorganic Ligands with Switchable Variants of Cytochrome c. Inorg Chem 2021; 61:1207-1227. [PMID: 34699724 DOI: 10.1021/acs.inorgchem.1c02322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ligand substitution at the metal center is common in catalysis and signal transduction of metalloproteins. Understanding the effects of particular ligands, as well as the polypeptide surrounding, is critical for uncovering mechanisms of these biological processes and exploiting them in the design of bioinspired catalysts and molecular devices. A series of switchable K79G/M80X/F82C (X = Met, His, or Lys) variants of cytochrome (cyt) c was employed to directly compare the stability of differently ligated proteins and activation barriers for Met, His, and Lys replacement at the ferric heme iron. Studies of these variants and their nonswitchable counterparts K79G/M80X have revealed stability trends Met < Lys < His and Lys < His < Met for the protein FeIII-X and FeII-X species, respectively. The differences in the hydrogen-bonding interactions in folded proteins and in solvation of unbound X in the unfolded proteins explain these trends. Calculations of free energy of ligand dissociation in small heme model complexes reveal that the ease of the FeIII-X bond breaking increases in the series amine < imidazole < thioether, mirroring trends in hardness of these ligands. Experimental rate constants for X dissociation in differently ligated cyt c variants are consistent with this sequence, but the differences between Met and His dissociation rates are attenuated because the former process is limited by the heme crevice opening. Analyses of activation parameters and comparisons to those for the Lys-to-Met ligand switch in the alkaline transition suggest that ligand dissociation is entropically driven in all the variants and accompanied by Lys protonation at neutral pH. The described thiolate redox-linked switches have offered a wealth of new information about interactions of different protein-derived ligands with the heme iron in cyt c model proteins, and we anticipate that the strategy of employing these switches could benefit studies of other redox metalloproteins and model complexes.
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Affiliation(s)
- Fangfang Zhong
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Stephanie L Alden
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Russell P Hughes
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Ekaterina V Pletneva
- Department of Chemistry, Dartmouth College, Hanover, New Hampshire 03755, United States
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12
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Lipshultz JM, Radosevich AT. Uniting Amide Synthesis and Activation by P III/P V-Catalyzed Serial Condensation: Three-Component Assembly of 2-Amidopyridines. J Am Chem Soc 2021; 143:14487-14494. [PMID: 34478308 DOI: 10.1021/jacs.1c07608] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An organophosphorus (PIII/PV redox) catalyzed method for the three-component condensation of amines, carboxylic acids, and pyridine N-oxides to generate 2-amidopyridines via serial dehydration is reported. Whereas amide synthesis and functionalization usually occur under divergent reaction conditions, here a phosphetane catalyst (together with a mild bromenium oxidant and terminal hydrosilane reductant) is shown to drive both steps chemoselectively in an auto-tandem catalytic cascade. The ability to both prepare and functionalize amides under the action of a single organocatalytic reactive intermediate enables new possibilities for the efficient and modular preparation of medicinal targets.
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Affiliation(s)
- Jeffrey M Lipshultz
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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13
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Alexander JR, Kevorkian PV, Topczewski JJ. Silver Mediated Banert Cascade with Carbon Nucleophiles. Org Lett 2021; 23:3227-3230. [PMID: 33797930 DOI: 10.1021/acs.orglett.1c01032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The Banert cascade of propargylic azides can be promoted by simple silver salts, and the triazafulvene intermediate can be intercepted by carbon nucleophiles. Various indoles (>25 examples, up to 92% yield) and electron-rich heterocycles were effective. The Mayr nucleophilicity parameter (N) was found to correlate to the reaction efficiency, which enabled the formation of Csp3-Csp2 and Csp3-Csp3 bonds under otherwise identical conditions from structurally dissimilar nucleophiles.
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Affiliation(s)
- Juliana R Alexander
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Paul V Kevorkian
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
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14
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Yang L, Bongsuiru Jei B, Scheremetjew A, Kuniyil R, Ackermann L. Electrochemical B-H Nitrogenation: Access to Amino Acid and BODIPY-Labeled nido-Carboranes. Angew Chem Int Ed Engl 2021; 60:1482-1487. [PMID: 32991021 PMCID: PMC7839532 DOI: 10.1002/anie.202012105] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 12/16/2022]
Abstract
Electrocatalyzed oxidative B-H nitrogenations of nido-carborane (nido-7,8-C2 B9 H12- ) with N-heterocycles have been established, enabling the preparation of various N-substituted nido-carboranes without chemical oxidants or metal catalyst under ambient conditions. The electrolysis manifold occurred with high levels of efficiency as well as chemo- and position- selectivity, employing sustainable electricity as the sole oxidant. The strategy set the stage for a user-friendly access to novel amino acid and fluorogenic boron-dipyrrin (BODIPY)-labeled nido-carborane hybrids.
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Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and Wöhler Research Institute for Sustainable ChemistryGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
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15
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De Abreu M, Tang Y, Brachet E, Selkti M, Michelet V, Belmont P. Silver-catalyzed tandem cycloisomerization/hydroarylation reactions and mechanistic investigations for an efficient access to 1,2-dihydroisoquinolines. Org Biomol Chem 2021; 19:1037-1046. [DOI: 10.1039/d0ob02197k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combination of AcOH and Ag catalyst induced an efficient tandem reaction to form 1,2-dihydroisoquinoline derivatives. Highly functionalized multiheterocyclic scaffolds are accessible straightforwardly using readily available starting materials.
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Affiliation(s)
| | - Yue Tang
- Université Côte d'Azur
- Institut de Chimie de Nice
- UMR CNRS 7272
- Parc Valrose
- Faculté des Sciences
| | | | - Mohamed Selkti
- Université de Paris
- CiTCoM
- UMR CNRS 8038
- F-75006 Paris
- France
| | - Véronique Michelet
- Université Côte d'Azur
- Institut de Chimie de Nice
- UMR CNRS 7272
- Parc Valrose
- Faculté des Sciences
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16
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Yang L, Bongsuiru Jei B, Scheremetjew A, Kuniyil R, Ackermann L. Elektrochemische B‐H‐Nitrogenierung: Zugang zu Aminosäure‐ und BODIPY‐markierten
nido
‐Carboranen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Long Yang
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Becky Bongsuiru Jei
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie und Wöhler Research Institute for Sustainable Chemistry Georg-August-Universität Göttingen Tammannstrasse 2 37077 Göttingen Deutschland
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17
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van der Helm MP, Wang CL, Fan B, Macchione M, Mendes E, Eelkema R. Organocatalytic Control over a Fuel-Driven Transient-Esterification Network*. Angew Chem Int Ed Engl 2020; 59:20604-20611. [PMID: 32700406 PMCID: PMC7693295 DOI: 10.1002/anie.202008921] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/20/2022]
Abstract
Signal transduction in living systems is the conversion of information into a chemical change, and is the principal process by which cells communicate. In nature, these functions are encoded in non-equilibrium (bio)chemical reaction networks (CRNs) controlled by enzymes. However, man-made catalytically controlled networks are rare. We incorporated catalysis into an artificial fuel-driven out-of-equilibrium CRN, where the forward (ester formation) and backward (ester hydrolysis) reactions are controlled by varying the ratio of two organocatalysts: pyridine and imidazole. This catalytic regulation enables full control over ester yield and lifetime. This fuel-driven strategy was expanded to a responsive polymer system, where transient polymer conformation and aggregation are controlled through fuel and catalyst levels. Altogether, we show that organocatalysis can be used to control a man-made fuel-driven system and induce a change in a macromolecular superstructure, as in natural non-equilibrium systems.
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Affiliation(s)
- Michelle P van der Helm
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Chang-Lin Wang
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Bowen Fan
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Mariano Macchione
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Eduardo Mendes
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Rienk Eelkema
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
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18
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Helm MP, Wang C, Fan B, Macchione M, Mendes E, Eelkema R. Organocatalytic Control over a Fuel‐Driven Transient‐Esterification Network**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008921] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Michelle P. Helm
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Chang‐Lin Wang
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Bowen Fan
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Mariano Macchione
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Eduardo Mendes
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Rienk Eelkema
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
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19
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Kodolitsch K, Gobec F, Slugovc C. Solvent- and Catalyst-Free Aza-Michael Addition of Imidazoles and Related Heterocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000309] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Katharina Kodolitsch
- Institute for Chemistry and Technology of Materials; Graz University of Technology; Stremayrgasse 9 A 8010 Graz Austria
| | - Florian Gobec
- Institute for Chemistry and Technology of Materials; Graz University of Technology; Stremayrgasse 9 A 8010 Graz Austria
| | - Christian Slugovc
- Institute for Chemistry and Technology of Materials; Graz University of Technology; Stremayrgasse 9 A 8010 Graz Austria
- Christian Doppler Laboratory for Organocatalysis in Polymerization; Stremayrgasse 9 A 8010 Graz Austria
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20
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Tran TN, Mauro CD, Graillot A, Mija A. Chemical Reactivity and the Influence of Initiators on the Epoxidized Vegetable Oil/Dicarboxylic Acid System. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02700] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Thi-Nguyet Tran
- Université Côte d’Azur, Institut de Chimie de Nice, UMR 7272 - CNRS, 28 Avenue Valrose, 06108 Nice Cedex 2, France
| | - Chiara Di Mauro
- Université Côte d’Azur, Institut de Chimie de Nice, UMR 7272 - CNRS, 28 Avenue Valrose, 06108 Nice Cedex 2, France
| | - Alain Graillot
- Specific Polymers, 150 Avenue des Cocardières, Zac Via Domitia, 34160 Castries, France
| | - Alice Mija
- Université Côte d’Azur, Institut de Chimie de Nice, UMR 7272 - CNRS, 28 Avenue Valrose, 06108 Nice Cedex 2, France
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21
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Kinetic study of nucleophilic reactivity of heterocyclic amines with 4,6-dinitrobenzofuroxan in acetonitrile. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.04.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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22
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Xiang F, Popczun EJ, Hopkinson DP. Layer-by-layer assembly of metal-organic framework nanosheets with polymer. NANOTECHNOLOGY 2019; 30:345602. [PMID: 30991373 DOI: 10.1088/1361-6528/ab19f4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metal-organic framework (MOF) nanosheets are attracting more and more attention due to their tunable porous structure and two-dimensional shape. Adding MOF nanosheets into polymers can lead to improved properties, but the level of enhancement is usually thwarted by the difficulties in exfoliating and aligning these nanosheets within the polymer matrix. In order to establish a strategy for making polymer/MOF nanosheets composites with improved exfoliation and alignment, we combined MOF nanosheets and polymer using layer-by-layer (LbL) assembly for the first time. MOF nanosheets (ZIF67-L, leaf-like zeolitic imidazolate framework nanosheets) used in this study were functionalized with positively charged polyethylenimine, which could replace the original surface ligands and impart a positive charge on the nanosheet surface. These positively charged MOF nanosheets were then combined with negatively charged poly(acrylic acid) through ionic-bonding-assisted LbL assembly, generating a polymer composite with fully exfoliated and highly aligned MOF nanosheets.
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Affiliation(s)
- Fangming Xiang
- US Department of Energy, National Energy Technology Laboratory, 626 Cochrans Mill Rd, Pittsburgh, PA 15236, United States of America
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23
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Yuan P, Chen J, Zhao J, Huang Y. Enantioselective Hydroamidation of Enals by Trapping of a Transient Acyl Species. Angew Chem Int Ed Engl 2018; 57:8503-8507. [PMID: 29693756 DOI: 10.1002/anie.201803556] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Indexed: 12/13/2022]
Abstract
An enantioselective synthesis of β-chiral amides through asymmetric and redox-neutral hydroamidation of enals is reported. In this reaction, a chiral N-heterocyclic carbene (NHC) catalyst reacts with enals to generate the homoenolate intermediate. Upon highly enantioselective β-protonation through proton-shuttle catalysis, the resulting azolium intermediate reacts with imidazole to yield the key β-chiral acyl species. This transient intermediate provides access to diversified β-chiral carbonyl derivatives, such as amides, hydrazides, acids, esters, and thioesters. In particular, β-chiral amides can be prepared in excellent yield and ee (40 chiral amides, up to 95 % yield and 99 % ee). This modular strategy overcomes the challenge of disruption of the highly selective proton-shuttling process by basic amines.
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Affiliation(s)
- Pengfei Yuan
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jiean Chen
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry, Institute of Chemistry and BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yong Huang
- State Key Laboratory of Chemical Oncogenomics, Key Laboratory of Chemical Genomics, Peking University, Shenzhen Graduate School, Shenzhen, 518055, China
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24
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Beutner GL, Young IS, Davies ML, Hickey MR, Park H, Stevens JM, Ye Q. TCFH-NMI: Direct Access to N-Acyl Imidazoliums for Challenging Amide Bond Formations. Org Lett 2018; 20:4218-4222. [PMID: 29956545 DOI: 10.1021/acs.orglett.8b01591] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Challenging couplings of hindered carboxylic acids with non-nucleophilic amines to form amide bonds can be accomplished in high yields, and in many cases, with complete retention of the adjacent stereogenic centers using the combination of N, N, N', N'-tetramethylchloroformamidinium hexafluorophosphate (TCFH) and N-methylimidazole (NMI). This method allows for in situ generation of highly reactive acyl imidazolium ions, which have been demonstrated to be intermediates in the reaction. The reagent delivers high reactivity similar to acid chlorides with the ease of use of modern uronium reagents.
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Affiliation(s)
- Gregory L Beutner
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Ian S Young
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Merrill L Davies
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Matthew R Hickey
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Hyunsoo Park
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Jason M Stevens
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
| | - Qingmei Ye
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb Drive , New Brunswick , New Jersey 08903 , United States
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25
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Sun AC, McClain EJ, Beatty JW, Stephenson CR. Visible Light-Mediated Decarboxylative Alkylation of Pharmaceutically Relevant Heterocycles. Org Lett 2018; 20:3487-3490. [PMID: 29856641 PMCID: PMC6014829 DOI: 10.1021/acs.orglett.8b01250] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A net redox-neutral method for the decarboxylative alkylation of heteroarenes using photoredox catalysis is reported. Additionally, this method features the use of simple, commercially available carboxylic acid derivatives as alkylating agents, enabling the facile alkylation of a variety of biologically relevant heterocyclic scaffolds under mild conditions.
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Affiliation(s)
- Alexandra C. Sun
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Ave., Ann Arbor, MI 48109, United States
| | - Edward J. McClain
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Ave., Ann Arbor, MI 48109, United States
| | - Joel W. Beatty
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Ave., Ann Arbor, MI 48109, United States
| | - Corey R.J. Stephenson
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 North University Ave., Ann Arbor, MI 48109, United States
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26
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Yuan P, Chen J, Zhao J, Huang Y. Enantioselective Hydroamidation of Enals by Trapping of a Transient Acyl Species. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803556] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Pengfei Yuan
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Jiean Chen
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Shenzhen 518055 China
| | - Jing Zhao
- State Key Laboratory of Coordination Chemistry Institute of Chemistry and BioMedical Sciences School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Yong Huang
- State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Shenzhen 518055 China
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27
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Alonso JM, Paz Muñoz M. Evidence of Hybrid Homogeneous-Heterogeneous Catalysis in a Pt/Au Heterobimetallic System. ChemCatChem 2018. [DOI: 10.1002/cctc.201800076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - María Paz Muñoz
- School of Chemistry; University of East Anglia; NR4 7TJ Norwich UK
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28
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Alonso JM, Muñoz MP. Heterobimetallic Catalysis: Platinum-Gold-Catalyzed Tandem Cyclization/C-X Coupling Reaction of (Hetero)Arylallenes with Nucleophiles. Angew Chem Int Ed Engl 2018; 57:4742-4746. [PMID: 29493867 DOI: 10.1002/anie.201800670] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Indexed: 01/26/2023]
Abstract
Heterobimetallic catalysis offers new opportunities for reactivity and selectivity but still presents challenges, and only a few metal combinations have been explored so far. Reported here is a Pt-Au heterobimetallic catalyst system for the synthesis of a family of multi-heteroaromatic structures through tandem cyclization/C-X coupling reaction. Au-catalyzed 6-endo-cyclization takes place as the first fast step. Pt-Au clusters are proposed to be responsible for the increased reactivity in the second step, that is, the intermolecular nucleophilic addition which occurs through an outer-sphere mechanism by hybrid homogeneous-heterogeneous catalysis.
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Affiliation(s)
| | - María Paz Muñoz
- School of Chemistry, University of East Anglia, Norwich, NR4 7TJ, UK
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29
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Alonso JM, Muñoz MP. Heterobimetallic Catalysis: Platinum‐Gold‐Catalyzed Tandem Cyclization/C−X Coupling Reaction of (Hetero)Arylallenes with Nucleophiles. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800670] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - María Paz Muñoz
- School of Chemistry University of East Anglia Norwich NR4 7TJ UK
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30
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Timofeeva DS, Mayer RJ, Mayer P, Ofial AR, Mayr H. Which Factors Control the Nucleophilic Reactivities of Enamines? Chemistry 2018; 24:5901-5910. [DOI: 10.1002/chem.201705962] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Daria S. Timofeeva
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Robert J. Mayer
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Peter Mayer
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Armin R. Ofial
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Germany
| | - Herbert Mayr
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstraße 5-13 81377 München Germany
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31
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Penta and hexacoordinated aluminum(III) compounds containing benzotriazole and benzimidazole derivatives as ligands. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.10.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Vistoli G, Mantovani C, Gervasoni S, Pedretti A, Aldini G. Key factors regulating protein carbonylation by α,β unsaturated carbonyls: A structural study based on a retrospective meta-analysis. Biophys Chem 2017; 230:20-26. [PMID: 28851547 DOI: 10.1016/j.bpc.2017.08.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 08/11/2017] [Accepted: 08/13/2017] [Indexed: 01/20/2023]
Abstract
Protein carbonylation represents one of the most important oxidative-based modifications involving nucleophilic amino acids and affecting protein folding and function. Protein carbonylation is induced by electrophilic carbonyl species and is an highly selective process since few nucleophilic residues are carbonylated within each protein. While considering the great interest for protein carbonylation, few studies investigated the factors which render a nucleophilic residue susceptible to carbonylation. Hence, the present study is aimed to delve into the factors which modulate the reactivity of cysteine, histidine and lysine residues towards α,β unsaturated carbonyls by a retrospective analysis of the available studies which identified the adducted residues for proteins, the structure of which was resolved. Such an analysis involved different parameters including exposure, nucleophilicity, surrounding residues and capacity to attract carbonyl species (as derived by docking simulations). The obtained results allowed a meaningful clustering of the analyzed proteins suggesting that on average carbonylation selectivity increases with protein size. The comparison between adducted and unreactive residues revealed differences in all monitored parameters which are markedly more pronounced for cysteines compared to lysines and histidines. Overall, these results suggest that cysteine's carbonylation is a finely (and reasonably purposely) modulated process, while the carbonylation of lysines and histidines seems to be a fairly random event in which limited differences influence their reactivity.
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Affiliation(s)
- Giulio Vistoli
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy.
| | - Chiara Mantovani
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Silvia Gervasoni
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Alessandro Pedretti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
| | - Giancarlo Aldini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Via Mangiagalli 25, 20133 Milano, Italy
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33
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Byrne PA, Kobayashi S, Breugst M, Laub H, Mayr H. Quantification of the nucleophilic reactivity of nicotine. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3580] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Peter A. Byrne
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Shinjiro Kobayashi
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Martin Breugst
- Department für Chemie; Universität zu Köln; Greinstraße 4 50939 Köln Germany
| | - Hans Laub
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Herbert Mayr
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
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34
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Sharifi A, Ghonouei N, Abaee MS. Ethylene glycol, an efficient and recoverable medium for copper-catalyzedN-arylation of diazoles under microwave irradiation. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1135347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Sun S, Błażewska KM, Kadina AP, Kashemirov BA, Duan X, Triffitt JT, Dunford JE, Russell RGG, Ebetino FH, Roelofs AJ, Coxon FP, Lundy MW, McKenna CE. Fluorescent Bisphosphonate and Carboxyphosphonate Probes: A Versatile Imaging Toolkit for Applications in Bone Biology and Biomedicine. Bioconjug Chem 2015; 27:329-40. [PMID: 26646666 DOI: 10.1021/acs.bioconjchem.5b00369] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A bone imaging toolkit of 21 fluorescent probes with variable spectroscopic properties, bone mineral binding affinities, and antiprenylation activities has been created, including a novel linking strategy. The linking chemistry allows attachment of a diverse selection of dyes fluorescent in the visible to near-infrared range to any of the three clinically important heterocyclic bisphosphonate bone drugs (risedronate, zoledronate, and minodronate or their analogues). The resultant suite of conjugates offers multiple options to "mix and match" parent drug structure, fluorescence emission wavelength, relative bone affinity, and presence or absence of antiprenylation activity, for bone-related imaging applications.
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Affiliation(s)
- Shuting Sun
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States.,BioVinc LLC , 6162 Bristol Parkway, Culver City, California 90230, United States
| | - Katarzyna M Błażewska
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States.,Faculty of Chemistry, Lodz University of Technology , Zeromskiego 116, 90-924 Lodz, Poland
| | - Anastasia P Kadina
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Boris A Kashemirov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
| | - Xuchen Duan
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Nuffield Orthopaedic Centre, Oxford, OX3 7LD, United Kingdom
| | - James T Triffitt
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Nuffield Orthopaedic Centre, Oxford, OX3 7LD, United Kingdom
| | - James E Dunford
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Nuffield Orthopaedic Centre, Oxford, OX3 7LD, United Kingdom
| | - R Graham G Russell
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Nuffield Orthopaedic Centre, Oxford, OX3 7LD, United Kingdom
| | - Frank H Ebetino
- BioVinc LLC , 6162 Bristol Parkway, Culver City, California 90230, United States
| | - Anke J Roelofs
- Musculoskeletal Research Programme, Institute of Medical Sciences, University of Aberdeen , Aberdeen, AB25 2ZD, United Kingdom
| | - Fraser P Coxon
- Musculoskeletal Research Programme, Institute of Medical Sciences, University of Aberdeen , Aberdeen, AB25 2ZD, United Kingdom
| | - Mark W Lundy
- BioVinc LLC , 6162 Bristol Parkway, Culver City, California 90230, United States
| | - Charles E McKenna
- Department of Chemistry, University of Southern California , Los Angeles, California 90089, United States
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36
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Mayr H, Ammer J, Baidya M, Maji B, Nigst TA, Ofial AR, Singer T. Scales of Lewis basicities toward C-centered Lewis acids (carbocations). J Am Chem Soc 2015; 137:2580-99. [PMID: 25555037 DOI: 10.1021/ja511639b] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Equilibria for the reactions of benzhydryl cations (Ar2CH(+)) with phosphines, tert-amines, pyridines, and related Lewis bases were determined photometrically in CH2Cl2 and CH3CN solution at 20 °C. The measured equilibrium constants can be expressed by the sum of two parameters, defined as the Lewis Acidity (LA) of the benzhydrylium ions and the Lewis basicity (LB) of the phosphines, pyridines, etc. Least-squares minimization of log K = LA + LB with the definition LA = 0 for (4-MeOC6H4)2CH(+) gave a Lewis acidity scale for 18 benzhydrylium ions covering 18 orders of magnitude in CH2Cl2 as well as Lewis basicities (with respect to C-centered Lewis acids) for 56 bases. The Lewis acidities correlated linearly with the quantum chemically calculated (B3LYP/6-311++G(3df,2pd)//B3LYP/6-31G(d,p) level) methyl anion affinities of the corresponding benzhydrylium ions, which can be used as reference compounds for characterizing a wide variety of Lewis bases. The equilibrium measurements were complemented by isothermal titration calorimetry studies. Rates of SN1 solvolyses of benzhydryl chlorides, bromides, and tosylates derived from E(13-33)(+), i.e., from highly reactive carbocations, correlate excellently with the corresponding Lewis acidities and the quantum chemically calculated methyl anion affinities. This correlation does not hold for solvolyses of derivatives of the better stabilized amino-substituted benzhydrylium ions E(1-12)(+). In contrast, the correlation between electrophilic reactivities and Lewis acidities (or methyl anion affinities) is linear for all donor-substituted benzhydrylium ions E(1-21)(+), while the acceptor-substituted benzhydrylium ions E(26-33)(+) react more slowly than expected from their thermodynamic stabilities. The boundaries of linear rate-equilibrium relationships were thus defined.
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Affiliation(s)
- Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F, 81377 München, Germany
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Wen YQ, Hertzberg R, Moberg C. Enantioselective Acylphosphonylation—Dual Lewis Acid–Lewis Base Activation of Aldehyde and Acylphosphonate. J Org Chem 2014; 79:6172-8. [DOI: 10.1021/jo500895u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ye-Qian Wen
- Department
of Chemistry,
Organic Chemistry, KTH Royal Institute of Technology, SE 10044 Stockholm, Sweden
| | - Robin Hertzberg
- Department
of Chemistry,
Organic Chemistry, KTH Royal Institute of Technology, SE 10044 Stockholm, Sweden
| | - Christina Moberg
- Department
of Chemistry,
Organic Chemistry, KTH Royal Institute of Technology, SE 10044 Stockholm, Sweden
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Mechanistic insights into N- or P-centered nucleophile promoted thiol–vinylsulfone Michael addition. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.123] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Polenz I, Schmidt FG, Friedrich J, Tchernook I, Spange S. Radical Polymerization of MMA Co-initiated by 2-Phenyloxazoline. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Maji B, Baidya M, Ammer J, Kobayashi S, Mayer P, Ofial AR, Mayr H. Nucleophilic Reactivities and Lewis Basicities of 2-Imidazolines and Related N-Heterocyclic Compounds. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300213] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Gyuris M, Puskás LG, Tóth GK, Kanizsai I. Synthesis of novel pyrazole-based heterocycles via a copper(ii)-catalysed domino annulation. Org Biomol Chem 2013; 11:6320-7. [DOI: 10.1039/c3ob41146j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhuo LG, Liao W, Yu ZX. A Frontier Molecular Orbital Theory Approach to Understanding the Mayr Equation and to Quantifying Nucleophilicity and Electrophilicity by Using HOMO and LUMO Energies. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200103] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Beletskaya IP, Cheprakov AV. The Complementary Competitors: Palladium and Copper in C–N Cross-Coupling Reactions. Organometallics 2012. [DOI: 10.1021/om300683c] [Citation(s) in RCA: 348] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Nigst TA, Antipova A, Mayr H. Nucleophilic Reactivities of Hydrazines and Amines: The Futile Search for the α-Effect in Hydrazine Reactivities. J Org Chem 2012; 77:8142-55. [DOI: 10.1021/jo301497g] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Tobias A. Nigst
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377
München, Germany
| | - Anna Antipova
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377
München, Germany
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377
München, Germany
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Xi W, Wang C, Kloxin CJ, Bowman CN. Nitrogen-Centered Nucleophile Catalyzed Thiol-Vinylsulfone Addition, Another Thiol-ene "Click" Reaction. ACS Macro Lett 2012; 1:811-814. [PMID: 35607123 DOI: 10.1021/mz3001918] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new group of nitrogen-centered nucleophilic catalysts for the thiol-Michael addition "click" reactions is examined. These nucleophiles showed efficient catalytic activities as compared with traditional base catalysts, such as triethylamine, and are demonstrated to be a viable strategy for cross-linking polymerization reactions. Additionally, an experimental and computational mechanistic study was performed, suggesting a pathway for the nitrogen-centered catalyst to undergo the nucleophilic addition mechanism.
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Affiliation(s)
- Weixian Xi
- Department of Chemical and Biological
Engineering, University of Colorado, Boulder,
Colorado 80309-0424, United States
| | - Chen Wang
- College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang Province, 312000, People’s Republic of China
| | - Christopher J. Kloxin
- Department of Materials Science & Engineering and Department of Chemical & Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Christopher N. Bowman
- Department of Chemical and Biological
Engineering, University of Colorado, Boulder,
Colorado 80309-0424, United States
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Lakhdar S, Baidya M, Mayr H. Kinetics and mechanism of organocatalytic aza-Michael additions: direct observation of enamine intermediates. Chem Commun (Camb) 2012; 48:4504-6. [DOI: 10.1039/c2cc31224g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Deuri S, Phukan P. A DFT study on nucleophilicity and site selectivity of nitrogen nucleophiles. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2011.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Breugst M, Corral Bautista F, Mayr H. Nucleophilic Reactivities of the Anions of Nucleobases and Their Subunits. Chemistry 2011; 18:127-37. [DOI: 10.1002/chem.201102411] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Indexed: 11/10/2022]
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50
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De Rycke N, Couty F, David ORP. Increasing the Reactivity of Nitrogen Catalysts. Chemistry 2011; 17:12852-71. [DOI: 10.1002/chem.201101755] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Indexed: 11/11/2022]
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