|
1
|
McCarter AW, Sommer M, Percy JM, Jamieson C, Kennedy AR, Hirst DJ. Atom Efficient Synthesis of Selectively Difluorinated Carbocycles through a Gold(I)-Catalyzed Cyclization. J Org Chem 2018; 83:8888-8905. [PMID: 29978696 DOI: 10.1021/acs.joc.8b01121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The intramolecular carbocyclization of difluorinated enol acetals has been achieved for the first time using gold(I) catalysis. Difluorinated enol acetals bearing a pendant alkene group can be cyclized and reduced in one pot to form fluorinated diol motifs. Alternatively, the cyclization of terminal alkynes allows for the synthesis of fluorinated pyran scaffolds. Both cyclization processes can be performed under mild conditions allowing access to complex products rich in functionality. The cyclic systems are synthesized concisely (maximum four steps) from trifluoroethanol, an inexpensive fluorinated feedstock.
Collapse
Affiliation(s)
- Adam W McCarter
- Department of Pure and Applied Chemistry , University of Strathclyde , 295 Cathedral Street , Glasgow G1 1XL , United Kingdom
| | - Magdalena Sommer
- Department of Pure and Applied Chemistry , University of Strathclyde , 295 Cathedral Street , Glasgow G1 1XL , United Kingdom
| | - Jonathan M Percy
- Department of Pure and Applied Chemistry , University of Strathclyde , 295 Cathedral Street , Glasgow G1 1XL , United Kingdom
| | - Craig Jamieson
- Department of Pure and Applied Chemistry , University of Strathclyde , 295 Cathedral Street , Glasgow G1 1XL , United Kingdom
| | - Alan R Kennedy
- Department of Pure and Applied Chemistry , University of Strathclyde , 295 Cathedral Street , Glasgow G1 1XL , United Kingdom
| | - David J Hirst
- GlaxoSmithKline R&D Ltd ., Gunnels Wood Road , Stevenage , Herts SG1 2NY , United Kingdom
| |
Collapse
|
|
2
|
Hariss L, Ibrahim R, Jaber N, Roisnel T, Grée R, Hachem A. A General Approach to Various Five- and Six-Membered gem
-Difluoroheterocycles: Application to the Synthesis of Fluorinated Analogues of Sedamine. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Layal Hariss
- Laboratory for Medicinal Chemistry and Natural Products; Faculty of Sciences (1) and PRASE-EDST; Lebanese University; Hadat Beirut Lebanon
| | - Rima Ibrahim
- Laboratory for Medicinal Chemistry and Natural Products; Faculty of Sciences (1) and PRASE-EDST; Lebanese University; Hadat Beirut Lebanon
| | - Nada Jaber
- Laboratory for Medicinal Chemistry and Natural Products; Faculty of Sciences (1) and PRASE-EDST; Lebanese University; Hadat Beirut Lebanon
| | - Thierry Roisnel
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
| | - René Grée
- Univ Rennes; CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226; 35000 Rennes France
| | - Ali Hachem
- Laboratory for Medicinal Chemistry and Natural Products; Faculty of Sciences (1) and PRASE-EDST; Lebanese University; Hadat Beirut Lebanon
| |
Collapse
|
|
3
|
Percy JM, McCarter AW, Sewell AL, Sloan N, Kennedy AR, Hirst DJ. Developing the Saegusa–Ito Cyclisation for the Synthesis of Difluorinated Cyclohexenones. Chemistry 2015; 21:19119-27. [DOI: 10.1002/chem.201503653] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Jonathan M. Percy
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Adam W. McCarter
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Alan L. Sewell
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Nikki Sloan
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Alan R. Kennedy
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - David J. Hirst
- Flexible Discovery Unit, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY (UK)
| |
Collapse
|
|
4
|
Orr D, Percy JM, Tuttle T, Kennedy AR, Harrison ZA. Evaluating the Thermal Vinylcyclopropane Rearrangement (VCPR) as a Practical Method for the Synthesis of Difluorinated Cyclopentenes: Experimental and Computational Studies of Rearrangement Stereospecificity. Chemistry 2014; 20:14305-16. [DOI: 10.1002/chem.201403737] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Indexed: 11/12/2022]
|
|
5
|
Fourrière G, Leclerc E, Quirion JC, Pannecoucke X. Synthesis of exo-methylenedifluorocyclopentanes as precursors of fluorinated carbasugars by 5-exo-dig radical cyclization. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2011.02.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
|
6
|
Lin X, Zheng F, Qing FL. Iron-Catalyzed Cross-Coupling Reactions between Arylzinc Reagents and Alkyl Halides Bearing β-Fluorines. Organometallics 2011. [DOI: 10.1021/om2005904] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaowei Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng Zheng
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| |
Collapse
|
|
7
|
Fourrière G, Van Hijfte N, Lalot J, Dutech G, Fragnet B, Coadou G, Quirion JC, Leclerc E. Synthesis of difluorinated carbocyclic analogues of 5-deoxypentofuranoses and 1-amino-5-deoxypentofuranoses: en route to fluorinated carbanucleosides. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.079] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
|
8
|
Fourrière G, Lalot J, Hijfte NV, Quirion JC, Leclerc E. Synthesis of difluorinated carbocyclic analogues of 5-deoxypentofuranoses. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.170] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
|
9
|
Dolbier WR. Fluorinated free radicals. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/bfb0119266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
|
|
10
|
Crowley PJ, Fawcett J, Griffith GA, Moralee AC, Percy JM, Salafia V. Highly-functionalised difluorinated cyclohexane polyols via the Diels–Alder reaction: regiochemical control via the phenylsulfonyl group. Org Biomol Chem 2005; 3:3297-310. [PMID: 16132092 DOI: 10.1039/b507131c] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A difluorinated dienophile underwent cycloaddition reactions with a range of furans to afford cycloadducts which could be processed regio- and stereoselectively via episulfonium ions, generated by the reaction between their alkenyl groups and phenylsulfenyl chloride. The oxabicyclic products were oxidised to the phenylsulfonyl level and ring opened via E1(C)B or reductive desulfonative pathways to afford, ultimately, difluorinated cyclohexene or cyclohexane polyols.
Collapse
Affiliation(s)
- Patrick J Crowley
- Syngenta Ltd., Jealott's Hill International Research Centre, Bracknell, Berkshire, UK RG42 6EY
| | | | | | | | | | | |
Collapse
|
|
11
|
Arany A, Crowley PJ, Fawcett J, Hursthouse MB, Kariuki BM, Light ME, Moralee AC, Percy JM, Salafia V. Highly-functionalised difluorinated (hydroxymethyl)conduritol analogues via the Diels-Alder reactions of a difluorinated dienophile. Org Biomol Chem 2004; 2:455-65. [PMID: 14770223 DOI: 10.1039/b314314g] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A difluorodienophile, synthesised using a Stille coupling reaction underwent tin(iv)-catalysed cycloaddition with three furans to afford oxa[2.2.1]bicycloheptenes in good yield. Reduction of ester and carbamate carbonyl groups and diol protection as the acetonide set the stage for palladium-catalysed hydrostannylation in two cases. Treatment of the stannanes with methyllithium triggered ring-opening to afford highly-functionalised difluorinated cyclohexenols which could be deprotected to afford (hydroxymethyl)conduritol analogues.
Collapse
Affiliation(s)
- Andrea Arany
- Department of Chemistry, University of Leicester, University Road, Leicester, UK
| | | | | | | | | | | | | | | | | |
Collapse
|
|
12
|
|
|
13
|
Uneyama K, Yanagiguchi T, Asai H. Generation and intramolecular cyclization of difluoroalkyl radicals via single electron transfer from the benzeneselemolate anion: Synthesis of α,α-difluoro-γ-lactams. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10073-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
|
14
|
Percy JM. Building Block Approaches to Aliphatic Organofluorine Compounds. ORGANOFLUORINE CHEMISTRY 1997. [DOI: 10.1007/3-540-69197-9_4] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
|
15
|
Avila DV, Ingold KU, Lusztyk J, Dolbier WR, Pan HQ. Absolute Rate Constants for Radical Additions to Alkenes in Solution. The Synergistic Effect of Perfluorination on the Reactivities of n-Alkyl Radicals1. J Org Chem 1996; 61:2027-2030. [DOI: 10.1021/jo951782v] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David V. Avila
- Steacie Institute
for Molecular Sciences,
National Research Council of Canada,
Ottawa, Ontario, Canada K1A OR6, and the Department of Chemistry,
University of Florida, Gainesville,
Florida 32611
| | - K. U. Ingold
- Steacie Institute
for Molecular Sciences,
National Research Council of Canada,
Ottawa, Ontario, Canada K1A OR6, and the Department of Chemistry,
University of Florida, Gainesville,
Florida 32611
| | - J. Lusztyk
- Steacie Institute
for Molecular Sciences,
National Research Council of Canada,
Ottawa, Ontario, Canada K1A OR6, and the Department of Chemistry,
University of Florida, Gainesville,
Florida 32611
| | - W. R. Dolbier
- Steacie Institute
for Molecular Sciences,
National Research Council of Canada,
Ottawa, Ontario, Canada K1A OR6, and the Department of Chemistry,
University of Florida, Gainesville,
Florida 32611
| | - H.-Q. Pan
- Steacie Institute
for Molecular Sciences,
National Research Council of Canada,
Ottawa, Ontario, Canada K1A OR6, and the Department of Chemistry,
University of Florida, Gainesville,
Florida 32611
| |
Collapse
|
|
16
|
gem-Difluoro-cyclohexene and -cycloheptene derivatives through cyclization of gem-difluoroallyl radicals. J Fluor Chem 1996. [DOI: 10.1016/0022-1139(95)03339-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
|
17
|
Itoh T, Ohara H, Emoto S. Synthesis of new α,α-difluoro-γ-lactones through intramolecular radical cyclization as a key reaction. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)00518-h] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
|
18
|
Médebielle M. Electrochemical addition of chlorodifluoroacetyl aromatic compounds to electron-rich olefinic substrates. A convenient synthesis of gem-difluoro heterocyclic compounds. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)00222-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
|
19
|
Free-radical approach to the synthesis of fluorine-substituted cyclic compounds. Cyclization reactions of trifluoromethyl-and difluoromethylene-substituted carbon radicals. J Fluor Chem 1993. [DOI: 10.1016/s0022-1139(00)80477-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
|
20
|
Arnone A, Bravo P, Viani F, Cavicchio G, Crucianelli M, Marchetti V. Asymmetric synthesis of 3-chloro-3-fluoro- and 3-fluoro-2,4-disubstituted tetrahydrofurans by the “fluorinated sulfoxide chiron” route. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)85741-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|