1
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Hernández-Ruiz R, Gómez-Gil S, Pedrosa MR, Suárez-Pantiga S, Sanz R. Direct synthesis of haloaromatics from nitroarenes via a sequential one-pot Mo-catalyzed reduction/Sandmeyer reaction. Org Biomol Chem 2023; 21:7791-7798. [PMID: 37706648 DOI: 10.1039/d3ob01187a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
Herein, we report the direct synthesis of a wide variety of functionalized aromatic bromides, chlorides, iodides, and fluorides from nitroarenes in a sequential one-pot operation. This protocol is based on an air- and moisture-tolerant dioxomolybdenum-catalyzed reduction of nitroaromatics, employing pinacol as a reducing agent, which enables subsequent diazotization and halogenation steps. This methodology represents a step-economical, practical, and alternative procedure for synthesizing haloaromatics directly from nitroaromatics.
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Affiliation(s)
- Raquel Hernández-Ruiz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Sara Gómez-Gil
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - María R Pedrosa
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Samuel Suárez-Pantiga
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
| | - Roberto Sanz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain.
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2
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Wang X, Zhang X, Xue L, Wang Q, You F, Dai L, Wu J, Kramer S, Lian Z. Mechanochemical Synthesis of Aryl Fluorides by Using Ball Milling and a Piezoelectric Material as the Redox Catalyst. Angew Chem Int Ed Engl 2023; 62:e202307054. [PMID: 37523257 DOI: 10.1002/anie.202307054] [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: 05/19/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/02/2023]
Abstract
Aryl fluorides are important structural motifs in many pharmaceuticals. Although the Balz-Schiemann reaction provides an entry to aryl fluorides from aryldiazonium tetrafluoroborates, it suffers from drawbacks such as long reaction time, high temperature, toxic solvent, toxic gas release, and low functional group tolerance. Here, we describe a general method for the synthesis of aryl fluorides from aryldiazonium tetrafluoroborates using a piezoelectric material as redox catalyst under ball milling conditions in the presence of Selectfluor. This approach effectively addresses the aforementioned limitations. Furthermore, the piezoelectric material can be recycled multiple times. Mechanistic investigations indicate that this fluorination reaction may proceed via a radical pathway, and Selectfluor plays a dual role as both a source of fluorine and a terminal reductant.
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Affiliation(s)
- Xiaohong Wang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Xuemei Zhang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Li Xue
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Qingqing Wang
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Fengzhi You
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Lunzhi Dai
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
| | - Jiagang Wu
- Department of Materials Science, Sichuan University, 610064, Chengdu, China
| | - Søren Kramer
- Department of Chemistry, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
| | - Zhong Lian
- Department of Dermatology, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, Chengdu, P. R. China
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3
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Simon K, Znidar D, Boutet J, Guillamot G, Lenoir JY, Dallinger D, Kappe CO. Generation of 1,2-Difluorobenzene via a Photochemical Fluorodediazoniation Step in a Continuous Flow Mode. Org Process Res Dev 2023. [DOI: 10.1021/acs.oprd.2c00348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kevin Simon
- Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, Graz 8010, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, Graz 8010, Austria
| | - Desiree Znidar
- Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, Graz 8010, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, Graz 8010, Austria
| | - Julien Boutet
- Seqens SAS, 21 Chemin de la Sauvegarde, 21 Ecully Parc, Ecully 69130, France
| | - Gérard Guillamot
- Seqens SAS, 21 Chemin de la Sauvegarde, 21 Ecully Parc, Ecully 69130, France
| | - Jean-Yves Lenoir
- Seqens SAS, 21 Chemin de la Sauvegarde, 21 Ecully Parc, Ecully 69130, France
| | - Doris Dallinger
- Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, Graz 8010, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, Graz 8010, Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CCFLOW), Research Center Pharmaceutical Engineering GmbH (RCPE), Inffeldgasse 13, Graz 8010, Austria
- Institute of Chemistry, University of Graz, NAWI Graz, Heinrichstrasse 28, Graz 8010, Austria
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4
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Dumon AS, Rzepa HS, Alamillo-Ferrer C, Bures J, Procter R, Sheppard TD, Whiting A. A computational tool to accurately and quickly predict 19F NMR chemical shifts of molecules with fluorine-carbon and fluorine-boron bonds. Phys Chem Chem Phys 2022; 24:20409-20425. [PMID: 35983846 DOI: 10.1039/d2cp02317b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the evaluation of density-functional-theory (DFT) based procedures for predicting 19F NMR chemical shifts at modest computational cost for a range of molecules with fluorine bonds, to be used as a tool for assisting the characterisation of reaction intermediates and products and as an aid to identifying mechanistic pathways. The results for a balanced learning set of molecules were then checked using two further testing sets, resulting in the recommendation of the ωB97XD/aug-cc-pvdz DFT method and basis set as having the best combination of accuracy and computational time, with a RMS error of 3.57 ppm. Cationic molecules calculated without counter-anion showed normal errors, whilst anionic molecules showed somewhat larger errors. The method was applied to the prediction of the conformationally averaged 19F chemical shifts of 2,2,3,3,4,4,5,5-octafluoropentan-1-ol, in which gauche stereoelectronic effects involving fluorine dominate and to determining the position of coordination equilibria of fluorinated boranes as an aid to verifying the relative energies of intermediate species involved in catalytic amidation reactions involving boron catalysts.
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Affiliation(s)
- Alexandre S Dumon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London W12 OBZ, UK.
| | - Henry S Rzepa
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, White City Campus, Wood Lane, London W12 OBZ, UK.
| | | | - Jordi Bures
- Department of Chemistry, The University of Manchester, Manchester M13 9PL, UK
| | - Richard Procter
- Department of Chemistry, Christopher Ingold Laboratories, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Tom D Sheppard
- Department of Chemistry, Christopher Ingold Laboratories, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Andrew Whiting
- Centre for Sustainable Chemical Processes, Department of Chemistry, Science Laboratories, Durham University, South Road, Durham, DH1 3LE, UK
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5
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Fu Y, Shi H, Lei S, Shi L, Li H. Cu catalyzed [4 + 2] cycloaddition for the synthesis of highly substituted 3-fluoropyridines. Org Biomol Chem 2022; 20:3731-3736. [PMID: 35467681 DOI: 10.1039/d2ob00133k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper catalyzed annulation-aromatization of benzyl trifluoromethyl ketimines with 3-acryloyloxazolidin-2-ones for the synthesis of 3-fluoropyridines through double C-F bond cleavages has been developed. In this approach, the annulation occurred between the in situ formed dienes from trifluoromethyl ketimines via the first C-F bond cleavage and 3-acryloyloxazolidin-2-ones. Then the aromatization afforded 3-fluoropyridines in moderate yields through the second C-F bond cleavage. The 3-fluoropyridine products could be further hydrolyzed to multi-substituted 3-pyridinecarboxylic acids.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Shengshu Lei
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Lei Shi
- Huabao Flavours & Fragrances Co., Ltd., 1299 Yecheng Road, Shanghai 201822, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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6
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Griffiths GL, Vasquez C, Escorcia F, Clanton J, Lindenberg L, Mena E, Choyke PL. Translating a radiolabeled imaging agent to the clinic. Adv Drug Deliv Rev 2022; 181:114086. [PMID: 34942275 PMCID: PMC8889912 DOI: 10.1016/j.addr.2021.114086] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/30/2021] [Accepted: 12/16/2021] [Indexed: 02/03/2023]
Abstract
Molecular Imaging is entering the most fruitful, exciting period in its history with many new agents under development, and several reaching the clinic in recent years. While it is unusual for just one laboratory to take an agent from initial discovery through to full clinical approval the steps along the way are important to understand for all interested participants even if one is not involved in the entire process. Here, we provide an overview of these processes beginning at discovery and preclinical validation of a new molecular imaging agent and using as an exemplar a low molecular weight disease-specific targeted positron emission tomography (PET) agent. Compared to standard drug development requirements, molecular imaging agents may benefit from a regulatory standpoint from their low mass administered doses, they nonetheless still need to go through a series of well-defined steps before they can be considered for Phase 1 human testing. After outlining the discovery and preclinical validation approaches, we will also discuss the nuances of Phase 1, Phase 2 and Phase 3 studies that may culminate in an FDA general use approval. Finally, some post-approval aspects of novel molecular imaging agents are considered.
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Affiliation(s)
- Gary L. Griffiths
- Clinical Research Directorate, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Frederick, MD
| | - Crystal Vasquez
- Molecular Imaging Branch, National Cancer Institute, Bethesda, MD
| | - Freddy Escorcia
- Molecular Imaging Branch, National Cancer Institute, Bethesda, MD
| | | | - Liza Lindenberg
- Molecular Imaging Branch, National Cancer Institute, Bethesda, MD
| | - Esther Mena
- Molecular Imaging Branch, National Cancer Institute, Bethesda, MD
| | - Peter L. Choyke
- Molecular Imaging Branch, National Cancer Institute, Bethesda, MD
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7
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Matsubara R, Dong C, Hayashi M. Direct Arylation of Furoxan Using Potassium Aryltrifluoroborates. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Kirschner S, Peters M, Yuan K, Uzelac M, Ingleson MJ. Developing organoboranes as phase transfer catalysts for nucleophilic fluorination using CsF. Chem Sci 2022; 13:2661-2668. [PMID: 35340859 PMCID: PMC8890113 DOI: 10.1039/d2sc00303a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/09/2022] [Indexed: 12/05/2022] Open
Abstract
Despite the general high fluorophilicity of boron, organoboranes such as BEt3 and 3,5-(CF3)2C6H3–BPin are shown herein for the first time, to our knowledge, to be effective (solid to solution) phase-transfer catalysts for the fluorination of certain organohalides with CsF. Significant (up to 30% e.e.) chiral induction during nucleophilic fluorination to form β-fluoroamines using oxazaborolidine (pre)catalysts and CsF also can be achieved. Screening different boranes revealed a correlation between calculated fluoride affinity of the borane and nucleophilic fluorination reactivity, with sufficient fluoride affinity required for boranes to react with CsF and form Cs[fluoroborate] salts, but too high a fluoride affinity leading to fluoroborates that are poor at transferring fluoride to an electrophile. Fluoride affinity is only one component controlling reactivity in this context; effective fluorination also is dependent on the ligation of Cs+ which effects both the phase transfer of CsF and the magnitude of the [Cs⋯F-BR3] interaction and thus the B–F bond strength. Effective ligation of Cs+ (e.g. by [2.2.2]-cryptand) facilitates phase transfer of CsF by the borane but also weakens the Cs⋯F–B interaction which in turn strengthens the B–F bond – thus disfavouring fluoride transfer to an electrophile. Combined, these findings indicate that optimal borane mediated fluorination occurs using robust (to the fluorination conditions) boranes with fluoride affinity of ca. 105 kJ mol−1 (relative to Me3Si+) under conditions where a signficant Cs⋯F–B interaction persists. Simple boranes with the optimal fluoride ion affinity are effective as catalysts for phase transfer nucleophilic fluorination with CsF.![]()
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Affiliation(s)
- Sven Kirschner
- EaStCHEM School of Chemistry, The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Matthew Peters
- EaStCHEM School of Chemistry, The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Kang Yuan
- EaStCHEM School of Chemistry, The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Marina Uzelac
- EaStCHEM School of Chemistry, The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
| | - Michael J Ingleson
- EaStCHEM School of Chemistry, The University of Edinburgh David Brewster Road Edinburgh EH9 3FJ UK
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9
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Sadek O, Galán LA, Gendron F, Baguenard B, Guy S, Bensalah-Ledoux A, Le Guennic B, Maury O, Perrin DM, Gras E. Chiral Benzothiazole Monofluoroborate Featuring Chiroptical and Oxygen-Sensitizing Properties: Synthesis and Photophysical Studies. J Org Chem 2021; 86:11482-11491. [PMID: 34324320 DOI: 10.1021/acs.joc.1c00995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Advances in personalized medicine are prompting the development of multimodal agents, that is, molecules that combine properties promoting various diagnostic and therapeutic applications. General approaches exploit chemical conjugation of therapeutic agents with contrast agents or the design of multimodal nanoplatforms. Herein, we report the design of a single molecule that exhibits potential for different diagnostic modes as well as the ability to sensitize oxygen, thus offering potential for photodynamic therapy. Exceptionally, this work involves the synthesis and chiral resolution of an enantiomeric pair of chiral monofluoroborates that contain a stereogenic boron atom. Combining experimental and theoretical chiroptical studies allowed the unambiguous determination of their absolute configuration. Photophysical investigations established the ability of this compound to sensitize oxygen even in the absence of heavy atoms within its structure. The synthesis of a chiral benzothiazole monofluoroborate paves a way to multimodal diagnostic tools (fluorescence and nuclear imaging) while also featuring potential therapeutic applications owing to its ability to activate oxygen to its singlet state for use in photodynamic therapy.
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Affiliation(s)
- Omar Sadek
- LCC, CNRS UPR 8241, Université de Toulouse, UPS, INPT, 205 route de Narbonne, 31077, Toulouse, Cedex 4, France.,Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Laura Abad Galán
- Université Lyon, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, F-69342 Lyon, France
| | - Frédéric Gendron
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France
| | - Bruno Baguenard
- Université Lyon, Institut Lumière Matière, UMR 5306 CNRS - Université Claude Bernard Lyon 1, 10 rue Ada Byron, 69622 Villeurbanne Cedex, France
| | - Stephan Guy
- Université Lyon, Institut Lumière Matière, UMR 5306 CNRS - Université Claude Bernard Lyon 1, 10 rue Ada Byron, 69622 Villeurbanne Cedex, France
| | - Amina Bensalah-Ledoux
- Université Lyon, Institut Lumière Matière, UMR 5306 CNRS - Université Claude Bernard Lyon 1, 10 rue Ada Byron, 69622 Villeurbanne Cedex, France
| | - Boris Le Guennic
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes (ISCR) - UMR 6226, F-35000 Rennes, France
| | - Olivier Maury
- Université Lyon, ENS de Lyon, CNRS UMR 5182, Laboratoire de Chimie, F-69342 Lyon, France
| | - David M Perrin
- Chemistry Department, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Emmanuel Gras
- LCC, CNRS UPR 8241, Université de Toulouse, UPS, INPT, 205 route de Narbonne, 31077, Toulouse, Cedex 4, France.,ITAV, CNRS USR 3505, Université de Toulouse, UPS, 1 place Pierre Potier, 31106, Toulouse, Cedex 1, France
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10
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Yang L, Zhang CP. Revisiting the Balz-Schiemann Reaction of Aryldiazonium Tetrafluoroborate in Different Solvents under Catalyst- and Additive-Free Conditions. ACS OMEGA 2021; 6:21595-21603. [PMID: 34471763 PMCID: PMC8388107 DOI: 10.1021/acsomega.1c02825] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 08/04/2021] [Indexed: 05/04/2023]
Abstract
The thermal and photochemical Balz-Schiemann reaction in commonly used solvents was revisited under catalyst- and additive-free conditions. The study showed that using low- or non-polar solvents could improve the pyrolysis and photolysis of aryldiazonium tetrafluoroborates, enabling effective fluorination at a low temperature or under visible-light irradiation. PhCl and hexane were exemplified as cheap and reliable solvents for both reactions, providing good to excellent yields of aryl fluorides from the corresponding diazonium tetrafluoroborates. The combination of slight heating with visible-light irradiation was beneficial for the transformation of stable aryldiazonium tetrafluoroborates. Nevertheless, the electronic and steric nature of aryldiazonium tetrafluoroborates still had a pivotal effect on both fluorinations even in these solvents.
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Affiliation(s)
- Lian Yang
- School of Chemistry, Chemical
Engineering and Life Science, Wuhan University
of Technology, Wuhan 430070, China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical
Engineering and Life Science, Wuhan University
of Technology, Wuhan 430070, China
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11
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Hong CM, Xu Y, Chung JYL, Schultz DM, Weisel M, Varsolona RJ, Zhong YL, Purohit AK, He CQ, Gauthier DR, Humphrey GR, Maloney KM, Lévesque F, Wang Z, Whittaker AM, Sirota E, McMullen JP. Development of a Commercial Manufacturing Route to 2-Fluoroadenine, The Key Unnatural Nucleobase of Islatravir. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00304] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Cynthia M. Hong
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yingju Xu
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - John Y. L. Chung
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Danielle M. Schultz
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Mark Weisel
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Richard J. Varsolona
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Yong-Li Zhong
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Akasha K. Purohit
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Cyndi Q. He
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Donald R. Gauthier
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Guy R. Humphrey
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Kevin M. Maloney
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - François Lévesque
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Zhixun Wang
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Aaron M. Whittaker
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Eric Sirota
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Jonathan P. McMullen
- Process Research & Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
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12
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Salehi Marzijarani N, Snead DR, McMullen JP, Lévesque F, Weisel M, Varsolona RJ, Lam YH, Liu Z, Naber JR. One-Step Synthesis of 2-Fluoroadenine Using Hydrogen Fluoride Pyridine in a Continuous Flow Operation. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Nastaran Salehi Marzijarani
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - David R. Snead
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Jonathan P. McMullen
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - François Lévesque
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Mark Weisel
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Richard J. Varsolona
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Yu-hong Lam
- Modeling and Informatics, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Zhijian Liu
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - John R. Naber
- Process Research & Development, MRL, Merck & Co. Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
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13
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Sadek O, Perrin DM, Gras E. Unsymmetrical diaryliodonium phenyltrifluoroborate salts: Synthesis, structure and fluorination. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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CSC and CIC Awards 2019. Angew Chem Int Ed Engl 2019; 58:5801-5802. [DOI: 10.1002/anie.201903119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Preise von CSC und CIC 2019. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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