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Rubel CZ, Ravn AK, Ho HC, Yang S, Li ZQ, Engle KM, Vantourout JC. Stereodivergent, Kinetically Controlled Isomerization of Terminal Alkenes via Nickel Catalysis. Angew Chem Int Ed Engl 2024:e202320081. [PMID: 38494945 DOI: 10.1002/anie.202320081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/05/2024] [Accepted: 03/17/2024] [Indexed: 03/19/2024]
Abstract
Because internal alkenes are more challenging synthetic targets than terminal alkenes, metal-catalyzed olefin mono-transposition (i.e., positional isomerization) approaches have emerged to afford valuable E- or Z- internal alkenes from their complementary terminal alkene feedstocks. However, the applicability of these methods has been hampered by lack of generality, commercial availability of precatalysts, and scalability. Here, we report a nickel-catalyzed platform for the stereodivergent E/Z-selective synthesis of internal alkenes at room temperature. Commercial reagents enable this one-carbon transposition of terminal alkenes to valuable E- or Z-internal alkenes via a Ni-H-mediated insertion/elimination mechanism. Though the mechanistic regime is the same in both systems, the underlying pathways that lead to each of the active catalysts are distinct, with the Z-selective catalyst forming from comproportionation of an oxidative addition complex followed by oxidative addition with substrate and the E-selective catalyst forming from protonation of the metal by the trialkylphosphonium salt additive. In each case, ligand sterics and denticity control stereochemistry and prevent over-isomerization.
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Affiliation(s)
- Camille Z Rubel
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICMBS, UMR 5246 du CNRS), Université Lyon, Université Lyon 1, 1 rue Victor Grignard, 69100, Villeurbanne, France
| | - Anne K Ravn
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Hang Chi Ho
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Shenghua Yang
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Zi-Qi Li
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Julien C Vantourout
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICMBS, UMR 5246 du CNRS), Université Lyon, Université Lyon 1, 1 rue Victor Grignard, 69100, Villeurbanne, France
- Syngenta Crop Protection AG, Schaffauserstrasse, 4332, Stein, Switzerland
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Ton S, Ravn AK, Hoffmann DV, Day CS, Kingston L, Elmore CS, Skrydstrup T. Rapid Access to Carbon-Isotope-Labeled Alkyl and Aryl Carboxylates Applying Palladacarboxylates. JACS Au 2023; 3:756-761. [PMID: 37006775 PMCID: PMC10052257 DOI: 10.1021/jacsau.2c00708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 06/19/2023]
Abstract
Herein, we report a strategy for the formation of isotopically labeled carboxylic esters from boronic esters/acids using a readily accessible palladium carboxylate complex as an organometallic source of isotopically labeled functional groups. The reaction allows access to either unlabeled or full 13C- or 14C-isotopically labeled carboxylic esters, and the method is characterized by its operational simplicity, mild conditions, and general substrate scope. Our protocol is further extended to a carbon isotope replacement strategy, involving an initial decarbonylative borylation procedure. Such an approach allows access to isotopically labeled compounds directly from the unlabeled pharmaceutical, which can have implications for drug discovery programs.
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Affiliation(s)
- Stephanie
J. Ton
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Anne K. Ravn
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Daniel Vrønning Hoffmann
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Craig S. Day
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
| | - Lee Kingston
- Isotope
Chemistry, Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca Pharmaceuticals, Gothenburg 43183, Sweden
| | - Charles S. Elmore
- Isotope
Chemistry, Early Chemical Development, Pharmaceutical Sciences, R&D, AstraZeneca Pharmaceuticals, Gothenburg 43183, Sweden
| | - Troels Skrydstrup
- Carbon
Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience
Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus 8000, Denmark
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Ravn AK, Rezayee NM. The Investigation of a Switchable Iridium Catalyst for the Hydrogenation of Amides: A Case Study of C–O Versus C–N Bond Scission. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne K. Ravn
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Nomaan M. Rezayee
- Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
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Ravn AK, Johansen MB, Skrydstrup T. Regioselective Hydroalkylation of Vinylarenes by Cooperative Cu and Ni Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anne K. Ravn
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus Denmark
| | - Martin B. Johansen
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC) The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry Aarhus University Gustav Wieds Vej 14 8000 Aarhus Denmark
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Ravn AK, Johansen MB, Skrydstrup T. Regioselective Hydroalkylation of Vinylarenes by Cooperative Cu and Ni Catalysis. Angew Chem Int Ed Engl 2021; 61:e202112390. [PMID: 34727415 DOI: 10.1002/anie.202112390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/14/2021] [Indexed: 12/28/2022]
Abstract
Disclosed here is a dual copper and nickel catalytic system with a silyl hydride source for promoting the linear selective hydroalkylation of vinylarenes. This carbon-carbon bond-forming protocol is applied to couple a variety of functionalized vinylarenes with alkyl halides applying a nickel(II) NNN pincer complex in the presence of an NHC-ligated copper catalyst. This combination allows for a 1 mol % loading of the nickel catalyst leading to turnover numbers of up to 72. Over 40 examples are presented, including applications for pharmaceutical diversification. Labeling experiments demonstrated the regioselectivity of the reaction and revealed that the copper catalyst plays a crucial role in enhancing the rate for formation of the reactive linear alkyl nickel complex. Overall, the presented work provides a complimentary approach for hydroalkylation reactions, whilst providing a preliminary mechanistic understanding of the cooperativity between the copper and nickel complexes.
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Affiliation(s)
- Anne K Ravn
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus, Denmark
| | - Martin B Johansen
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus, Denmark
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Ravn AK, Johansen MB, Skrydstrup T. Controlled Release of Reactive Gases: A Tale of Taming Carbon Monoxide. Chempluschem 2020; 85:1529-1533. [PMID: 32510185 DOI: 10.1002/cplu.202000319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/21/2020] [Indexed: 12/19/2022]
Abstract
This Personal Account describes the development of air-stable and solid precursors for on-demand release of carbon monoxide. In combination with the development of a two-chamber reactor, COware®, CO liberation can be achieved under safe working conditions, as well as allowing transition metal-mediated carbonylations with stoichiometric carbon monoxide. Particularly appealing is the adaptability of this chemical technology for the preparation of carbon isotope labeled bioactive compounds.
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Affiliation(s)
- Anne K Ravn
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
| | - Martin B Johansen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark.,Department of Engineering, Aarhus University, Åbogade 40, 8200, Aarhus N, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry and the, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000, Aarhus C, Denmark
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Ravn AK, Vilstrup MBT, Noerby P, Nielsen DU, Daasbjerg K, Skrydstrup T. Carbon Isotope Labeling Strategy for β-Amino Acid Derivatives via Carbonylation of Azanickellacycles. J Am Chem Soc 2019; 141:11821-11826. [PMID: 31310710 DOI: 10.1021/jacs.9b05934] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of 4-membered azametallacycles have been prepared by the oxidative addition of Ni(0) with aziridines. Stoichiometric 13C-labeled carbon monoxide could be efficiently incorporated via Ni-C bond insertion to generate air stable and isolable cyclic Ni-acyl complexes. Upon subjection to a range of C-, N-, O-, and S-nucleophiles, 13C-labeled β-amino acids and derivatives thereof, as well as β-aminoketones, could be rapidly accessed. The methodology proved highly adaptable for the synthesis of the antidiabetic drug, sitagliptin, with a single carbon isotope label.
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Affiliation(s)
- Anne K Ravn
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Maria B T Vilstrup
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Peter Noerby
- Center for Materials Crystallography, Department of Chemistry , Aarhus University , Langelandsgade 140 , 8000 Aarhus , Denmark
| | - Dennis U Nielsen
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Kim Daasbjerg
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
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Flatabø R, Eder SD, Ravn AK, Samelin B, Greve MM, Reisinger T, Holst B. Fast resolution change in neutral helium atom microscopy. Rev Sci Instrum 2018; 89:053702. [PMID: 29864796 DOI: 10.1063/1.5029385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In neutral helium atom microscopy, a beam of atoms is scanned across a surface. Though still in its infancy, neutral helium microscopy has seen a rapid development over the last few years. The inertness and low energy of the helium atoms (less than 0.1 eV) combined with a very large depth of field and the fact that the helium atoms do not penetrate any solid material at low energies open the possibility for a non-destructive instrument that can measure topology on the nanoscale even on fragile and insulating surfaces. The resolution is determined by the beam spot size on the sample. Fast resolution change is an attractive property of a microscope because it allows different aspects of a sample to be investigated and makes it easier to identify specific features. However up till now it has not been possible to change the resolution of a helium microscope without breaking the vacuum and changing parts of the atom source. Here we present a modified source design, which allows fast, step wise resolution change. The basic design idea is to insert a moveable holder with a series of collimating apertures in front of the source, thus changing the effective source size of the beam and thereby the spot size on the surface and thus the microscope resolution. We demonstrate a design with 3 resolution steps. The number of resolution steps can easily be extended.
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Affiliation(s)
- R Flatabø
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
| | - S D Eder
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
| | - A K Ravn
- Nanoscience Center, Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - B Samelin
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
| | - M M Greve
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
| | - T Reisinger
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
| | - B Holst
- Department of Physics and Technology, University of Bergen, Allégaten 55, 5007 Bergen, Norway
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