1
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Patra S, Nandasana BN, Valsamidou V, Katayev D. Mechanochemistry Drives Alkene Difunctionalization via Radical Ligand Transfer and Electron Catalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402970. [PMID: 38829256 PMCID: PMC11304296 DOI: 10.1002/advs.202402970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/08/2024] [Indexed: 06/05/2024]
Abstract
A general and modular protocol is reported for olefin difunctionalization through mechanochemistry, facilitated by cooperative radical ligand transfer (RLT) and electron catalysis. Utilizing mechanochemical force and catalytic amounts of 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO), ferric nitrate can leverage nitryl radicals, transfer nitrooxy-functional group via RLT, and mediate an electron catalysis cycle under room temperature. A diverse range of activated and unactivated alkenes exhibited chemo- and regioselective 1,2-nitronitrooxylation under solvent-free or solvent-less conditions, showcasing excellent functional group tolerance. Mechanistic studies indicated a significant impact of mechanochemistry and highlighted the radical nature of this nitrative difunctionalization process.
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Affiliation(s)
- Subrata Patra
- Department of ChemistryBiochemistry, and Pharmaceutical SciencesUniversity of BernFreiestrasse 3Bern3012Switzerland
| | - Bhargav N. Nandasana
- Department of ChemistryBiochemistry, and Pharmaceutical SciencesUniversity of BernFreiestrasse 3Bern3012Switzerland
| | - Vasiliki Valsamidou
- Department of ChemistryBiochemistry, and Pharmaceutical SciencesUniversity of BernFreiestrasse 3Bern3012Switzerland
| | - Dmitry Katayev
- Department of ChemistryBiochemistry, and Pharmaceutical SciencesUniversity of BernFreiestrasse 3Bern3012Switzerland
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2
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Mondal S, Midya SP, Mondal S, Das S, Ghosh P. Merging Photocatalytic Doubly-Decarboxylative C sp 2 -C sp 2 Cross-Coupling for Stereo-Selective (E)-α,β-Unsaturated Ketones Synthesis. Chemistry 2024; 30:e202303337. [PMID: 37987541 DOI: 10.1002/chem.202303337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/10/2023] [Accepted: 11/20/2023] [Indexed: 11/22/2023]
Abstract
A photocatalytic domain of doubly decarboxylative Csp 2 -Csp 2 cross coupling reaction is disclosed. Merging iridium and palladium photocatalysis manifested carbon-carbon bonds in a tandem dual-radical pathway. Present catalytic platform efficiently cross-coupled α, β-unsaturated acids and α-keto acids to afford a variety of α, β-unsaturated ketones with excellent (E)-selectivity and functional group tolerance. Mechanistically, photocatalyst implicated through reductive quenching cycle whereas cross coupling proceeded over one electron oxidative pallado-cycle.
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Affiliation(s)
- Subal Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Siba P Midya
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Soumya Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Suman Das
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, 700032, India
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3
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Giri R, Mosiagin I, Franzoni I, Nötel NY, Patra S, Katayev D. Photoredox Activation of Anhydrides for the Solvent-Controlled Switchable Synthesis of gem-Difluoro Compounds. Angew Chem Int Ed Engl 2022; 61:e202209143. [PMID: 35997088 PMCID: PMC9826529 DOI: 10.1002/anie.202209143] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Indexed: 01/11/2023]
Abstract
The incorporation of the gem-difluoromethylene (CF2 ) group into organic frameworks is highly sought due to the influence of this unit on the physicochemical and pharmacological properties of molecules. Herein we report an operationally simple, mild, and switchable protocol to access various gem-difluoro compounds that employs chlorodifloroacetic anhydride (CDFAA) as a low-cost and versatile fluoroalkylating reagent. Detailed mechanistic studies revealed that electron-transfer photocatalysis triggers mesolytic cleavage of a C-Cl bond generating a gem-difluoroalkyl radical. In the presence of alkene, this radical species acts as a unique intermediate that, under solvent-controlled reaction conditions, delivers a wide range of gem-difluorinated γ-lactams, γ-lactones, and promotes oxy-perfluoroalkylation. These protocols are flow- and batch-scalable, possess excellent chemo- and regioselectivity, and can be used for the late-stage diversification of complex molecules.
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Affiliation(s)
- Rahul Giri
- Department of ChemistryUniversity of FribourgChemin du Musée 91700FribourgSwitzerland
| | - Ivan Mosiagin
- Department of ChemistryUniversity of FribourgChemin du Musée 91700FribourgSwitzerland
| | - Ivan Franzoni
- NuChem Sciences Inc.2350 Rue Cohen, Suite 201Saint-LaurentQuebecH4R 2N6Canada,Present address: Valence Discovery Inc.6666 Rue St-Urbain, Suite 200MontrealQuebecH2S 3H1Canada
| | - Nicolas Yannick Nötel
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology, ETH ZürichVladimir-Prelog-Weg8093ZürichSwitzerland
| | - Subrata Patra
- Department of ChemistryUniversity of FribourgChemin du Musée 91700FribourgSwitzerland
| | - Dmitry Katayev
- Department of ChemistryUniversity of FribourgChemin du Musée 91700FribourgSwitzerland
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4
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Jia H, Ritter T. α-Thianthrenium Carbonyl Species: The Equivalent of an α-Carbonyl Carbocation. Angew Chem Int Ed Engl 2022; 61:e202208978. [PMID: 35895980 PMCID: PMC9804271 DOI: 10.1002/anie.202208978] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Indexed: 01/05/2023]
Abstract
Here we report an α-thianthrenium carbonyl species, as the equivalent of an α-carbonyl carbocation, which is generated by the radical conjugate addition of a trifluoromethyl thianthrenium salt to Michael acceptors. The reactivity allows for the synthesis of Cα -tetrasubstituted α- and β-amino acid analogues via a Ritter reaction by addition of acetonitrile. Addition of hydroxide, methoxide, and even fluoride can afford α-heteroatom substituted α-phenylpropanoates.
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Affiliation(s)
- Hao Jia
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany,Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Tobias Ritter
- Max-Planck-Institut für KohlenforschungKaiser-Wilhelm-Platz 145470Mülheim an der RuhrGermany
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5
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Reich D, Noble A, Aggarwal VK. Facile Conversion of α‐Amino Acids into α‐Amino Phosphonates by Decarboxylative Phosphorylation using Visible‐Light Photocatalysis. Angew Chem Int Ed Engl 2022; 61:e202207063. [PMID: 35851520 PMCID: PMC9543399 DOI: 10.1002/anie.202207063] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Dominik Reich
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Adam Noble
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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6
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Wang JZ, Sakai HA, MacMillan DWC. Alcohols as Alkylating Agents: Photoredox-Catalyzed Conjugate Alkylation via In Situ Deoxygenation. Angew Chem Int Ed Engl 2022; 61:e202207150. [PMID: 35727296 PMCID: PMC9398968 DOI: 10.1002/anie.202207150] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Indexed: 11/10/2022]
Abstract
The rapid exploration of sp3 -enriched chemical space is facilitated by fragment-coupling technologies that utilize simple and abundant alkyl precursors, among which alcohols are a highly desirable, commercially accessible, and synthetically versatile class of substrate. Herein, we describe an operationally convenient, N-heterocyclic carbene (NHC)-mediated deoxygenative Giese-type addition of alcohol-derived alkyl radicals to electron-deficient alkenes under mild photocatalytic conditions. The fragment coupling accommodates a broad range of primary, secondary, and tertiary alcohol partners, as well as structurally varied Michael acceptors containing traditionally reactive sites, such as electrophilic or oxidizable moieties. We demonstrate the late-stage diversification of densely functionalized molecular architectures, including drugs and biomolecules, and we further telescope our protocol with metallaphotoredox cross-coupling for step-economic access to sp3 -rich complexity.
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Affiliation(s)
- Johnny Z Wang
- Merck Center for Catalysis at Princeton University, Washington Road, Princeton, NJ 08544, USA
| | - Holt A Sakai
- Merck Center for Catalysis at Princeton University, Washington Road, Princeton, NJ 08544, USA
| | - David W C MacMillan
- Merck Center for Catalysis at Princeton University, Washington Road, Princeton, NJ 08544, USA
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7
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Giri R, Mosiagin I, Franzoni I, Nötel NY, Patra S, Katayev D. Photoredox Activation of Anhydrides for the Solvent‐Controlled Switchable Synthesis of gem‐Difluoro Compounds. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209143] [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)
- Rahul Giri
- University of Fribourg: Universite de Fribourg Chemistry Department Chemin du Musée 9 1700 Fribourg SWITZERLAND
| | - Ivan Mosiagin
- University of Fribourg: Universite de Fribourg Chemistry Department Chemin du Musée9 1700 Fribourg SWITZERLAND
| | - Ivan Franzoni
- Valence Discovery Inc. Research Department 6666 Rue St-Urbain, Suite 200Montreal H2S 3H1 Quebec CANADA
| | - Nicolas Yannick Nötel
- Swiss Federal Institute of Technology Zurich: Eidgenossische Technische Hochschule Zurich Department of Chemistry and Applied Biosciences Vladimir-Prelog-Weg 1-5/10 8093 Zürich SWITZERLAND
| | - Subrata Patra
- University of Fribourg: Universite de Fribourg Chemistry Department Chemin du Musée9 1700 Fribourg SWITZERLAND
| | - Dmitry Katayev
- University of Fribourg: Universite de Fribourg Department of Chemistry Chemin du Musée 9 1700 Fribourg SWITZERLAND
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8
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Jia H, Ritter T. α‐Thianthrenium Carbonyl Species: The Equivalent of an α‐Carbonyl Carbocation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hao Jia
- Max-Planck-Institute für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Chemistry Kaiser-Wilhelm-Platz 1 45470 Muelheim an der Ruhr GERMANY
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Department of Organic Chemistry Kaiser-Wilhelm-Platz 1 45470 Muelheim an der Ruhr GERMANY
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9
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Reich D, Noble A, Aggarwal VK. Facile Conversion of α‐Amino Acids to α‐Amino Phosphonates by Decarboxylative Phosphorylation using Visible‐Light Photocatalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dominik Reich
- University of Bristol School of Chemistry school of chemistry UNITED KINGDOM
| | - Adam Noble
- University of Bristol School of Chemistry school of chemistry UNITED KINGDOM
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10
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Hartley WC, Schiel F, Ermini E, Melchiorre P. Lewis Base‐Catalysed Enantioselective Radical Conjugate Addition for the Synthesis of Enantioenriched Pyrrolidinones. Angew Chem Int Ed Engl 2022; 61:e202204735. [DOI: 10.1002/anie.202204735] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Will C. Hartley
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | | | - Elena Ermini
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Paolo Melchiorre
- ICREA— Passeig Lluís Companys 23 08010 Barcelona Spain
- ICIQ—Institute of Chemical Research of Catalonia the Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
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11
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Wang JZ, Sakai HA, MacMillan DWC. Alcohols as Alkylating Agents: Photoredox‐Catalyzed Conjugate Alkylation via In Situ Deoxygenation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Hartley WC, Schiel F, Ermini E, Melchiorre P. Lewis Base‐Catalysed Enantioselective Radical Conjugate Addition for the Synthesis of Enantioenriched Pyrrolidinones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Will C. Hartley
- ICIQ: Institut Catala d'Investigacio Quimica Iciq 43007 Tarragona SPAIN
| | - Florian Schiel
- ICIQ: Institut Catala d'Investigacio Quimica Iciq 43007 Tarragona SPAIN
| | - Elena Ermini
- ICIQ: Institut Catala d'Investigacio Quimica iciq 43007 Tarragona SPAIN
| | - Paolo Melchiorre
- Institute of Chemical Research of Catalonia (ICIQ) ICIQ Av. Països Catalans 16 43007 Tarragona SPAIN
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13
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Tharra PR, Mikhaylov AA, Švejkar J, Gysin M, Hobbie SN, Švenda J. Short Synthesis of (+)‐Actinobolin: Simple Entry to Complex Small‐Molecule Inhibitors of Protein Synthesis. Angew Chem Int Ed Engl 2022; 61:e202116520. [DOI: 10.1002/anie.202116520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Indexed: 01/19/2023]
Affiliation(s)
- Prabhakara R. Tharra
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
| | - Andrey A. Mikhaylov
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
| | - Jiří Švejkar
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
| | - Marina Gysin
- Institute of Medical Microbiology University of Zürich Gloriastrasse 30 Zürich 8006 Switzerland
| | - Sven N. Hobbie
- Institute of Medical Microbiology University of Zürich Gloriastrasse 30 Zürich 8006 Switzerland
| | - Jakub Švenda
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
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14
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Tharra PR, Mikhaylov AA, Švejkar J, Gysin M, Hobbie SN, Švenda J. Short Synthesis of (+)‐Actinobolin: Simple Entry to Complex Small‐Molecule Inhibitors of Protein Synthesis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Prabhakara R. Tharra
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
| | - Andrey A. Mikhaylov
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
| | - Jiří Švejkar
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
| | - Marina Gysin
- Institute of Medical Microbiology University of Zürich Gloriastrasse 30 Zürich 8006 Switzerland
| | - Sven N. Hobbie
- Institute of Medical Microbiology University of Zürich Gloriastrasse 30 Zürich 8006 Switzerland
| | - Jakub Švenda
- Department of Chemistry Faculty of Science Masaryk University Kamenice 5 Brno 625 00 Czech Republic
- International Clinical Research Center St. Anne's University Hospital Pekařská 53 Brno 656 91 Czech Republic
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