1
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Su J, Guo W, Liu Y, Kong L, Zheng H, Zhu G. Cu-catalyzed cascade difluoroalkylation/5- endo cyclization/β-fluorine cleavage of ynones. Chem Commun (Camb) 2023; 59:1821-1824. [PMID: 36722869 DOI: 10.1039/d2cc06068j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A copper-catalyzed, redox-neutral cascade difluoroalkylation/5-endo annulation/β-fluorine cleavage of ynones is developed, providing a direct and stereoselective method to access synthetically important α-monofluoroalkenyl cyclopentanones. Mechanistic studies suggest an unprecedented CuII-assisted β-fluorine fragmentation, which may be valuable for the challenging but important C-F bond activation. Moreover, the in situ generated difluorocarbene was found to serve as an effective reductant for the regeneration of copper(I) catalyst, thus avoiding the addition of external reductants.
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Affiliation(s)
- Jingwen Su
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
| | - Wenbin Guo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
| | - Yi Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
| | - Hanliang Zheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
| | - Gangguo Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, P. R. China.
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2
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Guo R, Qi X, Xiang H, Geaneotes P, Wang R, Liu P, Wang Y. Stereodivergent Alkyne Hydrofluorination Using Protic Tetrafluoroborates as Tunable Reagents. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rui Guo
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Xiaotian Qi
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Hengye Xiang
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Paul Geaneotes
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Ruihan Wang
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Peng Liu
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
| | - Yi‐Ming Wang
- Department of ChemistryUniversity of Pittsburgh Pittsburgh PA 15260 USA
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3
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Guo R, Qi X, Xiang H, Geaneotes P, Wang R, Liu P, Wang YM. Stereodivergent Alkyne Hydrofluorination Using Protic Tetrafluoroborates as Tunable Reagents. Angew Chem Int Ed Engl 2020; 59:16651-16660. [PMID: 32485005 DOI: 10.1002/anie.202006278] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/22/2020] [Indexed: 01/10/2023]
Abstract
The discovery of safe, general, and practical procedures to prepare vinyl fluorides from readily available precursors remains a synthetic challenge. The metal-free hydrofluorination of alkynes constitutes an attractive though elusive strategy for their preparation. Introduced here is an inexpensive and easily handled reagent that enables the development of simple and scalable protocols for the regioselective hydrofluorination of alkynes to access both the E and Z isomers of vinyl fluorides. These reaction conditions were suitable for a diverse collection of alkynes, including several highly functionalized pharmaceutical derivatives. Computational and experimental mechanistic studies support C-F bond formation through vinyl cation intermediates, with the E- and Z-hydrofluorination products forming under kinetic and thermodynamic control, respectively.
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Affiliation(s)
- Rui Guo
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Xiaotian Qi
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Hengye Xiang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Paul Geaneotes
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Ruihan Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Yi-Ming Wang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
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4
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Padroni G, Eubanks CS, Hargrove AE. Differentiation and classification of RNA motifs using small molecule-based pattern recognition. Methods Enzymol 2019; 623:101-130. [PMID: 31239043 PMCID: PMC6891821 DOI: 10.1016/bs.mie.2019.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Understanding how to design small molecules that target coding and non-coding RNA has the potential to exponentially increase the number of therapeutically-relevant druggable targets, which are currently mostly proteins. However, there is limited information on the principles at the basis of RNA recognition. In this chapter, we describe a pattern-based technique that can be used for the simultaneous elucidation of RNA motifs and small molecule features for RNA selective recognition, termed Pattern Recognition of RNA by Small Molecules (PRRSM). We provide protocols for the computational design and synthetic preparation of an RNA training set as well as how to perform the assay in plate reader format. Furthermore, we provide details on how to perform and interpret the statistical analysis and indicate possible future extensions of the technique. By combining insights into characteristics of the small molecules and of the RNA that leads to differentiation, PRRSM promises to accelerate the elucidation of the determinants at the basis of RNA recognition.
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Affiliation(s)
- Giacomo Padroni
- Department of Chemistry, Duke University, Durham, NC, United States
| | | | - Amanda E Hargrove
- Department of Chemistry, Duke University, Durham, NC, United States.
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5
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Affiliation(s)
- Abraham J. Jordan
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Percie K. Thompson
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Coretta Scott King Young Women’s Leadership Academy, 1190 Northwest Drive NW, Atlanta, Georgia 30318, United States
- Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Joseph P. Sadighi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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6
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Ye Y, Takada T, Buchwald SL. Palladium-Catalyzed Fluorination of Cyclic Vinyl Triflates: Effect of TESCF 3 as an Additive. Angew Chem Int Ed Engl 2016; 55:15559-15563. [PMID: 27862732 PMCID: PMC5198716 DOI: 10.1002/anie.201608927] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 11/07/2022]
Abstract
A method for the palladium-catalyzed fluorination of cyclic vinyl triflates has been developed. As with several previous palladium-catalyzed fluorination reactions using fluoride salts, controlling the regioselectivity presented a challenge in developing a practical synthetic procedure. The addition of triethyl(trifluoromethyl)silane (TESCF3 ) was found to effectively address this problem and resulted in drastically improved regioselectivities in this palladium-catalyzed fluorination reaction. This discovery, along with the use of a new biarylphosphine ligand, allowed for the development of an efficient and highly regioselective protocol for the fluorination of vinyl triflates. This method is compatible with a range of sensitive functional groups and provides access to five-, six-, and seven-membered cyclic vinyl fluorides.
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Affiliation(s)
- Yuxuan Ye
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Takashi Takada
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Stephen L Buchwald
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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7
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Sommer H, Fürstner A. Stereospecific Synthesis of Fluoroalkenes by Silver-Mediated Fluorination of Functionalized Alkenylstannanes. Chemistry 2016; 23:558-562. [PMID: 27883234 DOI: 10.1002/chem.201605444] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Indexed: 12/21/2022]
Abstract
The known procedures for the conversion of alkenylstannanes into the corresponding fluoroalkenes suffer from largely variable yields and a limited compatibility with functional groups; most notably, protodestannation becomes a serious issue whenever protic sites are present in the substrate. Outlined in this paper is a convenient alternative with a much improved application profile, which is largely unperturbed by free alcohols and amides of all sorts. Key to success is the use of F-TEDA-PF6 in combination with non-hygroscopic and bench-stable silver phosphinate (AgOP(O)Ph2 ) that acts as an essentially neutral, non-nucleophilic promotor and effective tin-scavenger at the same time. This new method opens many opportunities for late-stage fluorination of elaborate compounds far beyond the scope of the literature procedures, as witnessed by the preparation of a fluorinated macrolide antibiotic, a fluorinated prostaglandin derivative, and a set of fluorinated amino acid surrogates and peptide isosteres.
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Affiliation(s)
- Heiko Sommer
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
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8
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Ye Y, Takada T, Buchwald SL. Palladium-Catalyzed Fluorination of Cyclic Vinyl Triflates: Effect of TESCF3as an Additive. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yuxuan Ye
- Department of Chemistry, Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Takashi Takada
- Department of Chemistry, Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
| | - Stephen L. Buchwald
- Department of Chemistry, Room 18-490; Massachusetts Institute of Technology; Cambridge MA 02139 USA
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9
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Chen P, Liu G. Advancements in Aminofluorination of Alkenes and Alkynes: Convenient Access to β-Fluoroamines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500231] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Campbell MG, Ritter T. Modern carbon-fluorine bond forming reactions for aryl fluoride synthesis. Chem Rev 2014; 115:612-33. [PMID: 25474722 DOI: 10.1021/cr500366b] [Citation(s) in RCA: 557] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Michael G Campbell
- Department of Chemistry and Chemical Biology, Harvard University , 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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11
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Loach R, Fenton OS, Amaike K, Siegel DS, Ozkal E, Movassaghi M. C7-derivatization of C3-alkylindoles including tryptophans and tryptamines. J Org Chem 2014; 79:11254-63. [PMID: 25343326 PMCID: PMC4241164 DOI: 10.1021/jo502062z] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Indexed: 02/07/2023]
Abstract
A versatile strategy for C7-selective boronation of tryptophans, tryptamines, and 3-alkylindoles by way of a single-pot C2/C7-diboronation-C2-protodeboronation sequence is described. The combination of a mild iridium-catalyzed C2/C7-diboronation followed by an in situ palladium-catalyzed C2-protodeboronation allows efficient entry to valuable C7-boroindoles that enable further C7-derivatization. The versatility of the chemistry is highlighted by the gram-scale synthesis of C7-boronated N-Boc-L-tryptophan methyl ester and the rapid synthesis of C7-halo, C7-hydroxy, and C7-aryl tryptophan derivatives.
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Affiliation(s)
- Richard
P. Loach
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
| | - Owen S. Fenton
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
| | - Kazuma Amaike
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
| | - Dustin S. Siegel
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
| | - Erhan Ozkal
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
| | - Mohammad Movassaghi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue 18-292, Cambridge, Massachusetts 02139, United States
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12
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Maity P, Klos MR, Kazmaier U. Syntheses of α-Stannylated and α-Iodinated Enamides via Molybdenum-Catalyzed Hydrostannation. Org Lett 2013; 15:6246-9. [DOI: 10.1021/ol4031028] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pulakesh Maity
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, D-66123 Saarbruecken, Germany
| | - Manuel R. Klos
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, D-66123 Saarbruecken, Germany
| | - Uli Kazmaier
- Saarland University, Institute of Organic Chemistry, Campus, Bldg. C4.2, D-66123 Saarbruecken, Germany
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13
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Yang MH, Matikonda SS, Altman RA. Preparation of Fluoroalkenes via the Shapiro Reaction: Direct Access to Fluorinated Peptidomimetics. Org Lett 2013; 15:3894-7. [DOI: 10.1021/ol401637n] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ming-Hsiu Yang
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Siddharth S. Matikonda
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
| | - Ryan A. Altman
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, Kansas 66045, United States
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14
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Liang T, Neumann CN, Ritter T. Introduction of fluorine and fluorine-containing functional groups. Angew Chem Int Ed Engl 2013; 52:8214-64. [PMID: 23873766 DOI: 10.1002/anie.201206566] [Citation(s) in RCA: 1955] [Impact Index Per Article: 177.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Indexed: 01/20/2023]
Abstract
Over the past decade, the most significant, conceptual advances in the field of fluorination were enabled most prominently by organo- and transition-metal catalysis. The most challenging transformation remains the formation of the parent C-F bond, primarily as a consequence of the high hydration energy of fluoride, strong metal-fluorine bonds, and highly polarized bonds to fluorine. Most fluorination reactions still lack generality, predictability, and cost-efficiency. Despite all current limitations, modern fluorination methods have made fluorinated molecules more readily available than ever before and have begun to have an impact on research areas that do not require large amounts of material, such as drug discovery and positron emission tomography. This Review gives a brief summary of conventional fluorination reactions, including those reactions that introduce fluorinated functional groups, and focuses on modern developments in the field.
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Affiliation(s)
- Theresa Liang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
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15
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16
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Abstract
Recent developments in the stereoselective synthesis of fluoroalkenes, which include hydrofluorination of alkyne, fluorination of alkenylmetal, condensation methods, dehydrofluorination of gem-difluoro compounds, and a cross-coupling reaction using fluorohaloalkenes or fluoroalkenylmetal, are described in this chapter.
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17
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Huang C, Liang T, Harada S, Lee E, Ritter T. Silver-mediated trifluoromethoxylation of aryl stannanes and arylboronic acids. J Am Chem Soc 2011; 133:13308-10. [PMID: 21827148 PMCID: PMC3218431 DOI: 10.1021/ja204861a] [Citation(s) in RCA: 164] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A silver-mediated cross-coupling of trifluoromethoxide with aryl stannanes and arylboronic acids to give aryl trifluoromethyl ethers is reported. This is the first report of a transition-metal-mediated C(aryl)-OCF(3) bond formation.
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Affiliation(s)
- Chenghong Huang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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18
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Affiliation(s)
- Hikaru Yanai
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432‐1 Horinouchi, Hachioji, Tokyo 192‐0392, Japan, Fax: +81‐42‐676‐3257
| | - Takeo Taguchi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432‐1 Horinouchi, Hachioji, Tokyo 192‐0392, Japan, Fax: +81‐42‐676‐3257
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19
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Xu T, Mu X, Peng H, Liu G. Silver-Catalyzed Intramolecular Aminofluorination of Activated Allenes. Angew Chem Int Ed Engl 2011; 50:8176-9. [DOI: 10.1002/anie.201103225] [Citation(s) in RCA: 134] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Indexed: 11/10/2022]
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20
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Xu T, Mu X, Peng H, Liu G. Silver-Catalyzed Intramolecular Aminofluorination of Activated Allenes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103225] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Landelle G, Bergeron M, Turcotte-Savard MO, Paquin JF. Synthetic approaches to monofluoroalkenes. Chem Soc Rev 2011; 40:2867-908. [DOI: 10.1039/c0cs00201a] [Citation(s) in RCA: 243] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Abstract
Carbon-fluorine bond formation by transition metal catalysis is difficult, and only a few methods for the synthesis of aryl fluorides have been developed. All reported transition-metal-catalyzed fluorination reactions for the synthesis of functionalized arenes are based on palladium. Here we present silver catalysis for carbon-fluorine bond formation. Our report is the first example of the use of the transition metal silver to form carbon-heteroatom bonds by cross-coupling catalysis. The functional group tolerance and substrate scope presented here have not been demonstrated for any other fluorination reaction to date.
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Affiliation(s)
- Pingping Tang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138
| | - Takeru Furuya
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA 02138
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23
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Teare H, Robins E, Kirjavainen A, Forsback S, Sandford G, Solin O, Luthra S, Gouverneur V. Radiosynthesis and Evaluation of [18F]Selectfluor bis(triflate). Angew Chem Int Ed Engl 2010; 49:6821-4. [DOI: 10.1002/anie.201002310] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Teare H, Robins E, Kirjavainen A, Forsback S, Sandford G, Solin O, Luthra S, Gouverneur V. Radiosynthesis and Evaluation of [18F]Selectfluor bis(triflate). Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002310] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Zhu L, Ni C, Zhao Y, Hu J. 1-tert-Butyl-1H-tetrazol-5-yl fluoromethyl sulfone (TBTSO2CH2F): a versatile fluoromethylidene synthon and its use in the synthesis of monofluorinated alkenes via Julia–Kocienski olefination. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.04.113] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Brown JM, Gouverneur V. Transition-metal-mediated reactions for C(sp2)-F bond construction: the state of play. Angew Chem Int Ed Engl 2010; 48:8610-4. [PMID: 19827068 DOI: 10.1002/anie.200902121] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- John M Brown
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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27
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Landelle G, Turcotte-Savard MO, Marterer J, Champagne PA, Paquin JF. Stereocontrolled Access to Unsymmetrical 1,1-Diaryl-2-fluoroethenes. Org Lett 2009; 11:5406-9. [DOI: 10.1021/ol9022672] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Grégory Landelle
- Canada Research Chair in Organic and Medicinal Chemistry, Département de chimie, 1045 avenue de la Médecine, Université Laval, Québec, QC, Canada G1V 0A6
| | - Marc-Olivier Turcotte-Savard
- Canada Research Chair in Organic and Medicinal Chemistry, Département de chimie, 1045 avenue de la Médecine, Université Laval, Québec, QC, Canada G1V 0A6
| | - Judikaëlle Marterer
- Canada Research Chair in Organic and Medicinal Chemistry, Département de chimie, 1045 avenue de la Médecine, Université Laval, Québec, QC, Canada G1V 0A6
| | - Pier Alexandre Champagne
- Canada Research Chair in Organic and Medicinal Chemistry, Département de chimie, 1045 avenue de la Médecine, Université Laval, Québec, QC, Canada G1V 0A6
| | - Jean-François Paquin
- Canada Research Chair in Organic and Medicinal Chemistry, Département de chimie, 1045 avenue de la Médecine, Université Laval, Québec, QC, Canada G1V 0A6
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28
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Brown J, Gouverneur V. Übergangsmetall-vermittelte Reaktionen zum Aufbau von Csp2-F-Bindungen. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902121] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Abstract
A regiospecific Ag-mediated fluorination reaction of aryl- and alkenylboronic acids and esters is reported. The fluorination reaction uses commercially available reagents, does not require the addition of exogenous ligands, and can be performed on a multigram scale. This report discloses the first practical reaction sequence from arylboronic acid to aryl fluorides.
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Affiliation(s)
- Takeru Furuya
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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30
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Prakash GKS, Chacko S, Vaghoo H, Shao N, Gurung L, Mathew T, Olah GA. Efficient Nucleophilic Fluoromethylation and Subsequent Transformation of Alkyl and Benzyl Halides Using Fluorobis(phenylsulfonyl)methane. Org Lett 2009; 11:1127-30. [DOI: 10.1021/ol8029627] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. K. Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - Sujith Chacko
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - Habiba Vaghoo
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - Nan Shao
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - Laxman Gurung
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - Thomas Mathew
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
| | - George A. Olah
- Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, California 90089-1661
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31
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Furuya T, Strom AE, Ritter T. Silver-Mediated Fluorination of Functionalized Aryl Stannanes. J Am Chem Soc 2009; 131:1662-3. [DOI: 10.1021/ja8086664] [Citation(s) in RCA: 259] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takeru Furuya
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts
| | - Alexandra E. Strom
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts
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β-Halovinylsilanes in oligoyne synthesis: a fluoride-catalysed unmasking of alkynes from β-fluorovinylsilanes. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.05.081] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Brel VK, Pirkuliev NS, Zefirov NS. Chemistry of xenon derivatives. Synthesis and chemical properties. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2001v070n03abeh000626] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Ghosh AK, Zajc B. High-yield synthesis of fluorinated benzothiazolyl sulfones: general synthons for fluoro-julia olefinations. Org Lett 2007; 8:1553-6. [PMID: 16597108 DOI: 10.1021/ol060002+] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] General, high-yield tandem electrophilic fluorination and modified Julia olefination for the synthesis of fluoro olefins is reported. A series of alpha-fluoro 1,3-benzothiazol-2-yl sulfone-based synthons were synthesized via deprotonation-fluorination. Of critical importance for high-yield fluorinations were heterogeneous reaction conditions, as under homogeneous conditions only starting sulfones were recovered. The alpha-fluoro 1,3-benzothiazol-2-yl sulfones so obtained were subjected to condensations with a variety of aldehydes and ketones to afford high yields of regiospecifically fluorinated olefins.
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Affiliation(s)
- Arun K Ghosh
- Department of Chemistry, The City College and The City University of New York, 138th Street at Convent Avenue, New York, New York 10031, USA
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Abstract
The fluorination of organosilanes with the silyl groups directly attached or adjacent to an aryl or alkenyl group has been only very recently examined despite the fact that the corresponding fluorinated products are synthetically useful building blocks. In these reactions, the silyl group enhances the reactivity of the pi-nucleophile and controls the sense of regiochemistry upon addition of the electrophilic source of fluorine. These reactions take advantage of the beta effect of the silicon-carbon bond and recent results from the literature revealed that this chemistry allows for the preparation of a variety of novel fluorinated building blocks including enantio-enriched derivatives.
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Affiliation(s)
- Matthew Tredwell
- University of Oxford, Chemistry Research laboratory, 12, Mansfield Road, Oxford, UK OX1 3TA
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Ocampo R, Dolbier WR, Zuluaga F. Synthesis of α-Fluoro-β-lactones and Their Thermal Conversion to 1-Fluoroalkenes. ACTA ACUST UNITED AC 2002. [DOI: 10.1135/cccc20021325] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
α-Fluoro-β-lactones have been synthesized and isolated for the first time from α-fluoro-β-hydroxy acids by using the couple TsCl/DMAP as lactonization agent. A detailed description of the synthesis and spectroscopic properties of α-fluoro-β-lactones is presented. Preliminary results indicate that thermolysis of these new β-lactones produces 1-fluoroalkenes.
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Bieniarz C, Behme C, Ramakrishna K. An efficient and environmentally friendly synthesis of the inhalation anesthetic sevoflurane. J Fluor Chem 2000. [DOI: 10.1016/s0022-1139(00)00316-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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Tamura M, Quan HD, Sekiya A. vic-Difluorination of Fluoroalkenes with Xenon Difluoride: The Effect of Fluorine Substituents on the Reaction of Alkenes with Xenon Difluoride. European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199911)1999:11<3151::aid-ejoc3151>3.0.co;2-f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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