1
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Park SH, Lee S. Selective Synthesis of ( Z)- and ( E)-β-Fluoro-α,β-Unsaturated Amides Using Palladium-Catalyzed Aminocarbonylation. Org Lett 2023; 25:6925-6930. [PMID: 37690119 DOI: 10.1021/acs.orglett.3c02809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The selective synthesis of (Z)- and (E)-β-fluoro-α,β-unsaturated amides via the palladium-catalyzed aminocarbonylation of 1-fluoro-2,2-diiodovinylarenes is described in the present study. Using {Pd(allyl)Cl}2 as a catalyst and DBU as a base in DMF, the primary product is (Z)-isomers. Conversely, the use of a Xantphos ligand along with {Pd(allyl)Cl}2 and Et3N as the bases in 1,4-dioxane leads to the selective formation of (E)-isomers. Notably, 1-fluoro-2,2-diiodovinylarenes with various substituents on the phenyl ring react with various secondary amines, producing the corresponding (Z)-isomeric amides with a high yield and selectivity. In contrast, (E)-isomeric amides exhibit lower yields and restricted applicability.
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Affiliation(s)
- Su Hyeon Park
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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2
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Liu X, Wu J, Zhang C. Copper and Palladium Cocatalyzed Defluorinative Coupling of gem-Difluoroalkenes and Acyl Chloride. Org Lett 2023; 25:1564-1568. [PMID: 36852955 DOI: 10.1021/acs.orglett.3c00347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
A novel copper and palladium cocatalyzed defluorinative coupling of gem-difluoroalkenes and acyl chlorides has been developed. It is a practical method to prepare α-fluorochalcones, which are a kind of important unit in a variety of bioactive compounds. Under mild reaction conditions, a series of substrates with various functional groups could afford desired products smoothly. Further synthetic studies illustrated that the products of this chemistry could be used as versatile precursors to access complicated compounds. Furthermore, the reaction mechanism was proposed based on control experiments.
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Affiliation(s)
- Xinyu Liu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92, Tianjin 300072, China
| | - Juanjuan Wu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92, Tianjin 300072, China
| | - Chun Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Rd. 92, Tianjin 300072, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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3
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Wigman B, Lee W, Wei W, Houk KN, Nelson HM. Electrochemical Fluorination of Vinyl Boronates through Donor-Stabilized Vinyl Carbocation Intermediates. Angew Chem Int Ed Engl 2022; 61:e202113972. [PMID: 35029844 PMCID: PMC8901537 DOI: 10.1002/anie.202113972] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Indexed: 01/24/2023]
Abstract
The electrochemical generation of vinyl carbocations from alkenyl boronic esters and boronates is reported. Using easy-to-handle nucleophilic fluoride reagents, these intermediates are trapped to form fully substituted vinyl fluorides. Mechanistic studies support the formation of dicoordinated carbocations through sequential single-electron oxidation events. Notably, this electrochemical fluorination features fast reaction times and Lewis acid-free conditions. This transformation provides a complementary method to access vinyl fluorides with simple fluoride salts such as TBAF.
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Affiliation(s)
- Benjamin Wigman
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Woojin Lee
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wenjing Wei
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Hosea M Nelson
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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4
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5
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Wigman B, Lee W, Wei W, Houk KN, Nelson HM. Electrochemical Fluorination of Vinyl Boronates through Donor‐Stabilized Vinyl Carbocation Intermediates**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamin Wigman
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Woojin Lee
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Wenjing Wei
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Hosea M. Nelson
- Department of Chemistry and Chemical Engineering California Institute of Technology Pasadena CA 91125 USA
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6
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Akula HK, Bae S, Pradhan P, Yang L, Zajc B, Lakshman MK. Diversely C8-functionalized adenine nucleosides via their underexplored carboxaldehydes. Chem Commun (Camb) 2022; 58:1744-1747. [PMID: 35029254 DOI: 10.1039/d1cc06686b] [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
The potentially versatile N-unprotected 8-formyl derivatives of adenosine and 2'-deoxyadenosine are highly underexploited for C8 modifications of these nucleosides. Only in situ formation of 8-formyladenosine is known and a single application of an N-benzoyl derivative has been reported. On the other hand, 8-formyl-2'-deoxyadenosine and its applications remain unknown. Herein, we report straightforward, scalable syntheses of both N-unprotected 8-formyladenine nucleoside derivatives, and demonstrate broad diversification at the C8 position by hydroxymethylation, azidation, CuAAC ligation, reductive amination, as well as olefination and fluoroolefination with modified Julia and a Horner-Wadsworth-Emmons reagents.
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Affiliation(s)
- Hari K Akula
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
| | - Suyeal Bae
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
| | - Padmanava Pradhan
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
| | - Lijia Yang
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.
| | - Barbara Zajc
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA. .,The PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
| | - Mahesh K Lakshman
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA. .,The PhD Program in Chemistry, The Graduate Center of the City University of New York, New York, NY 10016, USA
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7
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Lee JI, Park H. Synthetic Approaches to
N
‐Methoxy‐
N
‐methylamides. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jae In Lee
- Department of Chemistry College of Science and Technology, Duksung Women's University Seoul 01369 Republic of Korea
| | - Hyun Park
- Department of Chemistry College of Science and Technology, Duksung Women's University Seoul 01369 Republic of Korea
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8
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Yang Y, Li N, Zhao J, Jiang Y, Zhang X, Fan X. Selective Synthesis of 3‐(α‐Fluorovinyl)indoles and 3‐Acylindoles via the Cascade Reactions of 1‐Phenylpyrazolidinones with α,α‐Difluoromethylene Alkynes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100441] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yujie Yang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Na Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Jie Zhao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Yuqin Jiang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 People's Republic of China
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9
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Kang L, Wang F, Zhang J, Yang H, Xia C, Qian J, Jiang G. High Chemo-/Stereoselectivity for Synthesis of Polysubstituted Monofluorinated Pyrimidyl Enol Ether Derivatives. Org Lett 2021; 23:1669-1674. [PMID: 33599505 DOI: 10.1021/acs.orglett.1c00092] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel intramolecular Smiles rearrangement of α-fluoro-β-keto-pyrimidylsulfones (usually used as a carbon nucleophile) was developed, providing a versatile avenue for synthesis of tri/tetra-substituted monofluorinated pyrimidyl enol ethers. Among these, diverse (Z)-monofluorovinylsulfones and sulfinates were efficiently assembled by adding extra electrophile and fine-tuning reaction conditions. The process is triggered by a keto-enol tautomerism from enol oxyanion to pyrimidine 2-carbon, completely different from the classical carbon nucleophilic addition reaction approach.
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Affiliation(s)
- Lei Kang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fang Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Jinlong Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Huameng Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Chungu Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Jinlong Qian
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Gaoxi Jiang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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10
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Li C, Cao YX, Jin RX, Bian KJ, Qin ZY, Lan Q, Wang XS. Highly stereoselective nickel-catalyzed difluoroalkylation of aryl ketones to tetrasubstituted monofluoroalkenes and quaternary alkyl difluorides. Chem Sci 2019; 10:9285-9291. [PMID: 32055314 PMCID: PMC7003883 DOI: 10.1039/c9sc02806d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/17/2019] [Indexed: 12/19/2022] Open
Abstract
A nickel-catalyzed difluoroalkylation of α-C-H bonds of aryl ketones to furnish highly stereo-defined tetrasubstituted monofluoroalkenes or quaternary alkyl difluorides from secondary or tertiary ketones, respectively, has been established. Mechanistic investigations indicated that these C-H fluoroalkylations proceed via a Ni(i)/Ni(iii) catalytic cycle. An obvious fluorine effect was observed in the reaction, and this reaction has demonstrated high stereoselectivity, mild conditions, and broad substrate scopes, thus enabling the late-stage fluoroalkylation of bioactive molecules. This method offers a solution for expedient construction of monofluoroalkenes from readily available materials, and provides an efficient approach for the synthesis of bioactive fluorinated compounds for the discovery of lead compounds in medicinal chemistry.
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Affiliation(s)
- Chao Li
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Yi-Xuan Cao
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Ruo-Xing Jin
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Kang-Jie Bian
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Zi-Yang Qin
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Quan Lan
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale , Department of Chemistry , Center for Excellence in Molecular Synthesis of CAS , University of Science and Technology of China , Hefei , Anhui 230026 , China .
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11
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Naruse A, Kitahara K, Iwasa S, Shibatomi K. Synthesis of α‐Fluoroenones by Elimination of α‐Chloro‐α‐fluoroketones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Atsushi Naruse
- Department of Applied Chemistry and Life ScienceToyohashi University of Technology 1-1 Hibarigaoka, Tempaku-cho Toyohashi 441-8580 Japan
| | - Kazumasa Kitahara
- Department of Applied Chemistry and Life ScienceToyohashi University of Technology 1-1 Hibarigaoka, Tempaku-cho Toyohashi 441-8580 Japan
| | - Seiji Iwasa
- Department of Applied Chemistry and Life ScienceToyohashi University of Technology 1-1 Hibarigaoka, Tempaku-cho Toyohashi 441-8580 Japan
| | - Kazutaka Shibatomi
- Department of Applied Chemistry and Life ScienceToyohashi University of Technology 1-1 Hibarigaoka, Tempaku-cho Toyohashi 441-8580 Japan
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12
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Ionic liquids, microwave irradiation, and the synthesis of aryl Weinreb amides. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-017-2089-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Li Y, Liu J, Zhao S, Du X, Guo M, Zhao W, Tang X, Wang G. Copper-Catalyzed Fluoroolefination of Silyl Enol Ethers and Ketones toward the Synthesis of β-Fluoroenones. Org Lett 2018; 20:917-920. [DOI: 10.1021/acs.orglett.7b03700] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yanlin Li
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Jing Liu
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Shuang Zhao
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xuzhao Du
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Minjie Guo
- Institute
for Molecular Design and Synthesis, Health and Science Platform, Tianjin University, Tianjin 300072, P. R. China
| | - Wentao Zhao
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangyang Tang
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Guangwei Wang
- Tianjin
Key Laboratory of Molecular Optoelectronic Science, Department of
Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
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14
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Zhang J, Liu L, Duan J, Gu L, Chen B, Sun T, Gong Y. Stereoselective One-Pot Sequential Dehydrochlorination/trans
-Hydrofluorination Reaction of β-Chloro-α,β-unsaturated Aldehydes or Ketones: Facile Access to (Z
)-β-Fluoro-β-arylenals/β-Fluoro-β-arylenones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700981] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jingli Zhang
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 People's Republic of China
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road Wuhan 430074 People's Republic of China
| | - Liran Liu
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 People's Republic of China
| | - Junxin Duan
- School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 People's Republic of China
| | - Lianghu Gu
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road Wuhan 430074 People's Republic of China
| | - Bifeng Chen
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 People's Republic of China
| | - Taolei Sun
- School of Chemistry, Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan 430070 People's Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology; 1037 Luoyu Road Wuhan 430074 People's Republic of China
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15
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McCune CD, Beio ML, Sturdivant JM, de la Salud-Bea R, Darnell BM, Berkowitz DB. Synthesis and Deployment of an Elusive Fluorovinyl Cation Equivalent: Access to Quaternary α-(1'-Fluoro)vinyl Amino Acids as Potential PLP Enzyme Inactivators. J Am Chem Soc 2017; 139:14077-14089. [PMID: 28906111 PMCID: PMC6052324 DOI: 10.1021/jacs.7b04690] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Developing specific chemical functionalities to deploy in biological environments for targeted enzyme inactivation lies at the heart of mechanism-based inhibitor development but also is central to other protein-tagging methods in modern chemical biology including activity-based protein profiling and proteolysis-targeting chimeras. We describe here a previously unknown class of potential PLP enzyme inactivators; namely, a family of quaternary, α-(1'-fluoro)vinyl amino acids, bearing the side chains of the cognate amino acids. These are obtained by the capture of suitably protected amino acid enolates with β,β-difluorovinyl phenyl sulfone, a new (1'-fluoro)vinyl cation equivalent, and an electrophile that previously eluded synthesis, capture and characterization. A significant variety of biologically relevant AA side chains are tolerated including those for alanine, valine, leucine, methionine, lysine, phenylalanine, tyrosine, and tryptophan. Following addition/elimination, the resulting transoid α-(1'-fluoro)-β-(phenylsulfonyl)vinyl AA-esters undergo smooth sulfone-stannane interchange to stereoselectively give the corresponding transoid α-(1'-fluoro)-β-(tributylstannyl)vinyl AA-esters. Protodestannylation and global deprotection then yield these sterically encumbered and densely functionalized quaternary amino acids. The α-(1'-fluoro)vinyl trigger, a potential allene-generating functionality originally proposed by Abeles, is now available in a quaternary AA context for the first time. In an initial test of this new inhibitor class, α-(1'-fluoro)vinyllysine is seen to act as a time-dependent, irreversible inactivator of lysine decarboxylase from Hafnia alvei. The enantiomers of the inhibitor could be resolved, and each is seen to give time-dependent inactivation with this enzyme. Kitz-Wilson analysis reveals similar inactivation parameters for the two antipodes, L-α-(1'-fluoro)vinyllysine (Ki = 630 ± 20 μM; t1/2 = 2.8 min) and D-α-(1'-fluoro)vinyllysine (Ki = 470 ± 30 μM; t1/2 = 3.6 min). The stage is now set for exploration of the efficacy of this trigger in other PLP-enzyme active sites.
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Affiliation(s)
| | | | | | | | - Brendan M. Darnell
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588-0304
| | - David B. Berkowitz
- Department of Chemistry, University of Nebraska, Lincoln, NE, 68588-0304
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16
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Varun BV, Prabhu KR. Sulfur Assisted Tandem Electrophilic Fluorinative Deacylation: Synthesis of α-Fluoro β-Ketosulfides. J Org Chem 2017; 82:9525-9536. [DOI: 10.1021/acs.joc.7b01547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Begur Vasanthkumar Varun
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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17
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Unexpected decarboxamidation of α-arylsulfonyl Weinreb amides by Grignard reagents: Synthesis of α-disubstituted arylsulfones. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6371-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Preparation of 2-(t-butyl)dimethylsilyl-3,3-difluoropropenones via acylation reactions of 1-(t-butyl)dimethylsilyl-2,2-difluoroethenylstannane. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Song X, Chang J, Zhu D, Li J, Xu C, Liu Q, Wang M. Catalytic domino reaction of ketones/aldehydes with Me3SiCF2Br for the synthesis of α-fluoroenones/α-fluoroenals. Org Lett 2015; 17:1712-5. [PMID: 25797372 DOI: 10.1021/acs.orglett.5b00488] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unique domino reaction of enolizable carbonyl compounds with Me3SiCF2Br to construct α-fluoroenones and α-fluoroenals is described to undergo the in situ formation of difluorocarbene and silyl enol ether, difluorocyclopropanation, desilylation, ring-opening, and defluorination sequence. In this tandem reaction, Me3SiCF2Br acts as not only the difluorocarbene source but also the TMS transfer agent as well as internal bromide and fluoride anion catalyst. It allows the transformations to occur smoothly under only a catalytic amount of n-Bu4NBr as initiator.
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Affiliation(s)
- Xiaoning Song
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Jian Chang
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Dongsheng Zhu
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Jiaheng Li
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Cong Xu
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
| | - Mang Wang
- Department of Chemistry, Northeast Normal University, Renmin Street 5268, Changchun 130024, P. R. China
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Okoromoba O, Han J, Hammond GB, Xu B. Designer HF-based fluorination reagent: highly regioselective synthesis of fluoroalkenes and gem-difluoromethylene compounds from alkynes. J Am Chem Soc 2014; 136:14381-4. [PMID: 25260170 PMCID: PMC4210154 DOI: 10.1021/ja508369z] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 01/19/2023]
Abstract
Hydrogen fluoride (HF) and selected nonbasic and weakly coordinating (toward cationic metal) hydrogen-bond acceptors (e.g., DMPU) can form stable complexes through hydrogen bonding. The DMPU/HF complex is a new nucleophilic fluorination reagent that has high acidity and is compatible with cationic metal catalysts. The gold-catalyzed mono- and dihydrofluorination of alkynes using the DMPU/HF complex yields synthetically important fluoroalkenes and gem-difluoromethlylene compounds regioselectively.
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Affiliation(s)
- Otome
E. Okoromoba
- Department of Chemistry, University of
Louisville, Louisville, Kentucky 40292, United
States
| | - Junbin Han
- Department of Chemistry, University of
Louisville, Louisville, Kentucky 40292, United
States
| | - Gerald B. Hammond
- Department of Chemistry, University of
Louisville, Louisville, Kentucky 40292, United
States
| | - Bo Xu
- Department of Chemistry, University of
Louisville, Louisville, Kentucky 40292, United
States
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21
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Ni C, Hu M, Hu J. Good partnership between sulfur and fluorine: sulfur-based fluorination and fluoroalkylation reagents for organic synthesis. Chem Rev 2014; 115:765-825. [PMID: 25144886 DOI: 10.1021/cr5002386] [Citation(s) in RCA: 928] [Impact Index Per Article: 92.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai City, Shanghai 200032, China
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22
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Yan XW, Zhang Q, Wei W, Ji JX. Simple and convenient synthesis of fluoroalkenes via direct coupling of alcohols, alkynes and fluoroboric acid under metal-free conditions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.05.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Synthesis of regiospecifically fluorinated conjugated dienamides. Molecules 2014; 19:4418-32. [PMID: 24727415 PMCID: PMC4440806 DOI: 10.3390/molecules19044418] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 03/22/2014] [Accepted: 03/31/2014] [Indexed: 11/17/2022] Open
Abstract
Modular synthesis of regiospecifically fluorinated 2,4-diene Weinreb amides, with defined stereochemistry at both double bonds, was achieved via two sequential Julia-Kocienski olefinations. In the first step, a Z-α-fluorovinyl Weinreb amide unit with a benzothiazolylsulfanyl substituent at the allylic position was assembled. This was achieved via condensation of two primary building blocks, namely 2-(benzo[d]thiazol-2-ylsulfonyl)-2-fluoro-N-methoxy-N-methylacetamide (a Julia-Kocienski olefination reagent) and 2-(benzo[d]thiazol-2-ylthio)acetaldehyde (a bifunctional building block). This condensation was highly Z-selective and proceeded in a good 76% yield. Oxidation of benzothiazolylsulfanyl moiety furnished a second-generation Julia-Kocienski olefination reagent, which was used for the introduction of the second olefinic linkage via DBU-mediated condensations with aldehydes, to give (2Z,4E/Z)-dienamides in 50%–74% yield. Although olefinations were 4Z-selective, (2Z,4E/Z)-2-fluoro-2,4-dienamides could be readily isomerized to the corresponding 5-substituted (2Z,4E)-2-fluoro-N-methoxy-N-methylpenta-2,4-dienamides in the presence of catalytic iodine.
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Cao CR, Ou S, Jiang M, Liu JT. A practical route for the highly stereoselective synthesis of tetrasubstituted fluoroalkenes. Org Biomol Chem 2013; 12:467-73. [PMID: 24270666 DOI: 10.1039/c3ob42093k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of tetrasubstituted fluoroalkene derivatives were synthesized by the reaction of α-fluoro-β-carbonyl benzothiazol-2-yl sulfones with various nucleophiles in good yields with high stereoselectivities. The predominant cis configuration of fluorine and alkynyl groups was observed. A single isomer was obtained when a ketone, acetate or amide was used as the substrate in the presence of a base.
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Affiliation(s)
- Chun-Ru Cao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Road, Shanghai 200032, China.
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26
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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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27
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Lecea M, Grassin A, Ferreiro-Mederos L, Choppin S, Urbano A, Carreňo MC, Colobert F. One-Step Stereoselective Synthesis of Trisubstituted Monofluoroalkenes from 3,3,3-Trifluoropropionates. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300551] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Lemonnier G, Poisson T, Couve-Bonnaire S, Jubault P, Pannecoucke X. Diethylzinc-Mediated Addition of 2,2-Dibromo-2-fluoroacetamides to Carbonyl Compounds: Synthesis of α-Bromo-α-fluoro-β-hydroxy Amides and/or (Z)-Fluorovinyl Amides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300140] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Habib S, Larnaud F, Pfund E, Lequeux T, Fenet B, Goekjian PG, Gueyrard D. Synthesis of Fluorinatedexo-Glycals through Modified Julia Olefination. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201719] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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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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Abstract
Metalation-electrophilic fluorination of TMS- and TIPS-protected 1,3-benzothiazol-2-yl (BT) propargyl sulfones gave corresponding BT fluoropropargyl sulfones, Julia-Kocienski reagents for the synthesis of fluoro enynes. Both reagents reacted with aldehydes under mild DBU- or LHMDS-mediated conditions, giving high yields of conjugated fluoro enynes with E-stereoselectivity. In comparison to DBU-mediated reactions, stereoselectivity was higher in low-temperature LHMDS-mediated reactions. Two ketones were shown to react as well, using LHMDS as base. In situ removal of the TMS group gave terminal conjugated 2-fluoro 1,3-enynes. Synthetic utility of the fluoro enynes was demonstrated by conversion to internal alkynes and to stereoisomeric fluoro dienes via Sonogashira and Heck couplings.
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Affiliation(s)
- Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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33
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Abstract
A mild and efficient synthesis of 1-aryl-1-fluoroethenes from benzothiazolyl (aryl)fluoromethyl sulfones and paraformaldehyde, under DBU- or Cs(2)CO(3)-mediated conditions at room temperature, is described. A comparable diethyl fluoro(naphthalen-2-yl)methylphosphonate reagent does not react with paraformaldehyde under these mild conditions. The utility of the methodology for synthesis of terminal α-fluoroalkenes bearing electron-withdrawing functionalities is also shown.
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Affiliation(s)
- Samir K. Mandal
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Arun K. Ghosh
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
| | - Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, U.S.A
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34
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Shao YD, Wu XS, Tian SK. Stereoselective Olefination and Regiospecific Vicinal Difunctionalization of Imines with α-(Benzothiazol-2-ylsulfonyl) Carbonyl Compounds. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101684] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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35
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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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36
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Jacobsen CB, Nielsen M, Worgull D, Zweifel T, Fisker E, Jørgensen KA. Asymmetric organocatalytic monofluorovinylations. J Am Chem Soc 2011; 133:7398-404. [PMID: 21513324 DOI: 10.1021/ja110624k] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of highly enantio- and diastereoselective organocatalytic monofluorovinylations is presented. Based on the application of α-fluoro-β-keto-benzothiazolesulfones, the formal addition of a monofluorovinylic anion synthon to a range of acyclic and cyclic enones, as well as imines, is shown. These procedures give selective access to both E- and Z-isomers of the monofluorovinylated products, which are isolated as the pure diastereoisomers in good to excellent yields with up to 99% ee. Furthermore, the application of this concept for the formation of highly enantioenriched bicylic compounds containing a monofluorovinyl moiety is also described. In addition, a mechanistic rationale for the observed E:Z-selectivities is presented.
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Affiliation(s)
- Christian Borch Jacobsen
- Center for Catalysis, Department of Chemistry, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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37
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Kumar R, Pradhan P, Zajc B. Facile synthesis of 4-vinyl- and 4-fluorovinyl-1,2,3-triazoles via bifunctional "click-olefination" reagents. Chem Commun (Camb) 2011; 47:3891-3. [PMID: 21336351 DOI: 10.1039/c0cc05083k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modular synthesis of vinyl and fluorovinyl triazoles can be achieved from bifunctional propargyl and fluoropropargyl sulfones by Cu-catalyzed azide-alkyne ligation and Julia-Kocienski olefination. Competitive click reactions of the protio and fluoropropargyl sulfones show higher reactivity of the latter, and a preliminary DFT analysis was performed.
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Affiliation(s)
- Rakesh Kumar
- Department of Chemistry, The City College and The City University of New York, New York, New York 10031-9198, USA
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38
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39
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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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40
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41
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de Haro T, Nevado C. Domino gold-catalyzed rearrangement and fluorination of propargyl acetates. Chem Commun (Camb) 2011; 47:248-9. [DOI: 10.1039/c002679d] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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42
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Zweifel T, Nielsen M, Overgaard J, Jacobsen CB, Jørgensen KA. Practical Synthesis of β-Carbonyl Phenyltetrazolesulfones and Investigations of Their Reactivities in Organocatalysis. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001426] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Sun X, Yu F, Ye T, Liang X, Ye J. Catalytic asymmetric Michael reactions of α,β-unsaturated ketones with sulfonyl-containing nucleophiles: chiral synthesis of (R)-muscone and (S)-celery ketone. Chemistry 2010; 17:430-4. [PMID: 21207555 DOI: 10.1002/chem.201002418] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaomin Sun
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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44
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Barrios FJ, Zhang X, Colby DA. Dialkylaluminum N,O-Dimethylhydroxylamine Complex as a Reagent to Mask Reactive Carbonyl Groups in Situ from Nucleophiles. Org Lett 2010; 12:5588-91. [PMID: 21038923 DOI: 10.1021/ol102495v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francis J. Barrios
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
| | - Xuechao Zhang
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
| | - David A. Colby
- Department of Chemistry and Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana 47907, United States
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45
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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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46
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Nielsen M, Jacobsen C, Holub N, Paixão M, Jørgensen K. Asymmetrische Organokatalyse mit Sulfonen. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906340] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Nielsen M, Jacobsen C, Holub N, Paixão M, Jørgensen K. Asymmetric Organocatalysis with Sulfones. Angew Chem Int Ed Engl 2010; 49:2668-79. [DOI: 10.1002/anie.200906340] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
The Julia-Kocienski olefination provides a versatile platform for the synthesis of fluorovinyl compounds. This review describes our efforts as well as those of others in the synthesis of various fluorinated aryl and heteroaryl sulfones and their utility as olefination reagents for the modular assembly of fluoroalkenes. Where data is available, the influence of the fluorine atom on the reactivity of the olefination reagents and the stereochemical outcome of the olefination are described.
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Affiliation(s)
- Barbara Zajc
- Department of Chemistry, The City College and The City University of New York, 160 Convent Avenue, New York, NY 10031
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49
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Zhang W, Huang W, Hu J. Highly Stereoselective Synthesis of Monofluoroalkenes from α-Fluorosulfoximines and Nitrones. Angew Chem Int Ed Engl 2009; 48:9858-61. [DOI: 10.1002/anie.200905077] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Zhang W, Huang W, Hu J. Highly Stereoselective Synthesis of Monofluoroalkenes from α-Fluorosulfoximines and Nitrones. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200905077] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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