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Pohl JM, Stöhr F, Kramer T, Becker J, Göttlich R. Bis(2,2,2 trifluoroethyl) Phosphonate as a Convenient Precursor for the Synthesis of H-Phosphonates. Molecules 2024; 29:2432. [PMID: 38893307 PMCID: PMC11173472 DOI: 10.3390/molecules29112432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/15/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
A microwave-assisted synthesis of dialkyl and cyclic H-phosphonates via bis(2,2,2 trifluoroethyl) phosphonate (BTFEP) is described. This method enables the synthesis of various cyclic H-phosphonates and hetero-substituted dialkyl H-phosphonates by simple alcoholysis under non-inert and additive-free conditions. Short reaction times and the requirement for only stoichiometric amounts of alcohol render this method attractive for synthetic applications.
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Affiliation(s)
- Jean-Marie Pohl
- Institute for Organic Chemistry, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Fabian Stöhr
- Institute for Organic Chemistry, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Tim Kramer
- Institute for Organic Chemistry, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Jonathan Becker
- Institute for Inorganic and Analytical Chemistry, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Richard Göttlich
- Institute for Organic Chemistry, Justus-Liebig-Universität Giessen, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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2
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Li JF, Pan D, Wang HR, Zhang T, Li Y, Huang G, Ye M. Enantioselective C2-H Alkylation of Pyridines with 1,3-Dienes via Ni-Al Bimetallic Catalysis. J Am Chem Soc 2022; 144:18810-18816. [PMID: 36205623 DOI: 10.1021/jacs.2c09306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A chiral phosphine oxide-ligated Ni-Al bimetallic catalyst was used to realize an enantioselective C2-H alkylation of pyridines without the need of a C2-block. A wide range of pyridines, including unsubstituted pyridine, C3, C4, and C2-substituted pyridines, and even complex pyridine-containing bioactive molecules are well compatible with the reaction, providing up to 81% yield and up to 97% ee.
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Affiliation(s)
- Jiang-Fei Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Deng Pan
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, China
| | - Hao-Rui Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Tao Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Yi Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China
| | - Genping Huang
- Department of Chemistry, School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Tianjin 300072, China
| | - Mengchun Ye
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Frontiers Science Center for New Organic Matter, Tianjin 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
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3
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Rani S, Dash SR, Bera A, Alam MN, Vanka K, Maity P. Phosphite mediated asymmetric N to C migration for the synthesis of chiral heterocycles from primary amines. Chem Sci 2021; 12:8996-9003. [PMID: 34276927 PMCID: PMC8261767 DOI: 10.1039/d1sc01217g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/27/2021] [Indexed: 11/21/2022] Open
Abstract
A phosphite mediated stereoretentive C-H alkylation of N-alkylpyridinium salts derived from chiral primary amines was achieved. The reaction proceeds through the activation of the N-alkylpyridinium salt substrate with a nucleophilic phosphite catalyst, followed by a base mediated [1,2] aza-Wittig rearrangement and subsequent catalyst dissociation for an overall N to C-2 alkyl migration. The scope and degree of stereoretention were studied, and both experimental and theoretical investigations were performed to support an unprecedented aza-Wittig rearrangement-rearomatization sequence. A catalytic enantioselective version starting with racemic starting material and chiral phosphite catalyst was also established following our understanding of the stereoretentive process. This method provides efficient access to tertiary and quaternary stereogenic centers in pyridine systems, which are prevalent in drugs, bioactive natural products, chiral ligands, and catalysts.
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Affiliation(s)
- Soniya Rani
- Organic Chemistry Division, CSIR-National Chemical Laboratory Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Soumya Ranjan Dash
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory Pune 411008 India
| | - Asish Bera
- Organic Chemistry Division, CSIR-National Chemical Laboratory Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Md Nirshad Alam
- Organic Chemistry Division, CSIR-National Chemical Laboratory Pune-411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
| | - Kumar Vanka
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad-201002 India
- Physical and Material Chemistry Division, CSIR-National Chemical Laboratory Pune 411008 India
| | - Pradip Maity
- Organic Chemistry Division, CSIR-National Chemical Laboratory Pune-411008 India
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4
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Cai J, Bai LG, Zhang Y, Wang ZK, Yao F, Peng JH, Yan W, Wang Y, Zheng C, Liu WB. Ni-catalyzed enantioselective [2 + 2 + 2] cycloaddition of malononitriles with alkynes. Chem 2021. [DOI: 10.1016/j.chempr.2021.02.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Gyűjtő I, Porcs-Makkay M, Szabó G, Kelemen Z, Pusztai G, Tóth G, Dancsó A, Halász J, Simig G, Volk B, Nyulászi L. Basicity-Tuned Reactivity: diaza-[1,2]-Wittig versus diaza-[1,3]-Wittig Rearrangements of 3,4-Dihydro-2 H-1,2,3-benzothiadiazine 1,1-Dioxides. J Org Chem 2021; 86:1685-1700. [PMID: 33382258 PMCID: PMC8021225 DOI: 10.1021/acs.joc.0c02512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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The base-induced (t-BuOK) rearrangement reactions
of 3,4-dihydro-2H-1,2,3-benzothiadiazine 1,1-dioxides
result in a ring opening along the N–N bond, followed by ring
closure with the formation of new C–N bonds. The position of
the newly formed C–N bond can selectively be tuned by the amount
of the base, providing access to new, pharmacologically interesting
ring systems with high yield. While with 2 equiv of t-BuOK 1,2-benzisothiazoles can be obtained in a diaza-[1,2]-Wittig reaction, with 6 equiv of the base 1,2-benzothiazine
1,1-dioxides can be prepared in most cases as the main product, in
a diaza-[1,3]-Wittig reaction. DFT calculations and
detailed NMR studies clarified the mechanism, with a mono- or dianionic
key intermediate, depending on the amount of the reactant base. Also,
the role of an enamide intermediate formed during the workup of the
highly basic (6 equiv of base) reaction was clarified. The substrate
scope of the reaction was also explored in detail.
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Affiliation(s)
- Imre Gyűjtő
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary.,Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szt. Gellért tér 4, H-1111 Budapest, Hungary
| | - Márta Porcs-Makkay
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - Gergő Szabó
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szt. Gellért tér 4, H-1111 Budapest, Hungary
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szt. Gellért tér 4, H-1111 Budapest, Hungary
| | - Gyöngyvér Pusztai
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - Gábor Tóth
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary.,Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szt. Gellért tér 4, H-1111 Budapest, Hungary
| | - András Dancsó
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - Judit Halász
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - Gyula Simig
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - Balázs Volk
- Directorate of Drug Substance Development, Egis Pharmaceuticals Plc., P.O. Box 100, H-1475 Budapest, Hungary
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szt. Gellért tér 4, H-1111 Budapest, Hungary
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Jiao L, Zhou FY. Recent Developments in Transition-Metal-Free Functionalization and Derivatization Reactions of Pyridines. Synlett 2020. [DOI: 10.1055/s-0040-1706552] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AbstractPyridine is an important structural motif that is prevalent in natural products, drugs, and materials. Methods that functionalize and derivatize pyridines have gained significant attention. Recently, a large number of transition-metal-free reactions have been developed. In this review, we provide a brief summary of recent advances in transition-metal-free functionalization and derivatization reactions of pyridines, categorized according to their reaction modes.1 Introduction2 Metalated Pyridines as Nucleophiles2.1 Deprotonation2.2 Halogen–Metal exchange3 Activated Pyridines as Electrophiles3.1 Asymmetric 2-Allylation by Chiral Phosphite Catalysis3.2 Activation of Pyridines by a Bifunctional Activating Group3.3 Alkylation of Pyridines by 1,2-Migration3.4 Alkylation of Pyridines by [3+2] Addition3.5 Pyridine Derivatization by Catalytic In Situ Activation Strategies3.6 Reactions via Heterocyclic Phosphonium Salts4 Radical Reactions for Pyridine Functionalization4.1 Pyridine Functionalization through Radical Addition Reactions4.2 Pyridine Functionalization through Radical–Radical Coupling Reactions5 Derivatization of Pyridines through the Formation of Meisenheimer-Type Pyridyl Anions6 Conclusion
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Affiliation(s)
- Lei Jiao
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University
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Zhu H, Yin L, Chang Z, Wang Y, Dou X. Rhodium-Catalyzed Asymmetric Conjugate Addition of Organoboronic Acids to Carbonyl-Activated Alkenyl Azaarenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000211] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Huilong Zhu
- Department of Chemistry, School of Science; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Long Yin
- Department of Chemistry, School of Science; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Zhiqian Chang
- Department of Chemistry, School of Science; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Yuhan Wang
- Department of Chemistry, School of Science; China Pharmaceutical University; Nanjing 211198 People's Republic of China
| | - Xiaowei Dou
- Department of Chemistry, School of Science; China Pharmaceutical University; Nanjing 211198 People's Republic of China
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