1
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Cavalli D, Waser J. Organic Dye Photocatalyzed Synthesis of Functionalized Lactones and Lactams via a Cyclization-Alkynylation Cascade. Org Lett 2024. [PMID: 38739856 DOI: 10.1021/acs.orglett.4c01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
An organic dye photocatalyzed lactonization-alkynylation of easily accessible homoallylic cesium oxalates using ethynylbenziodoxolone (EBX) reagents has been developed. The reaction gave access to valuable functionalized lactones and lactams in up to 88% yield via the formation of two new C-C bonds. The transformation was carried out on primary, secondary, and tertiary homoallylic alcohols and primary homoallylic amines and could be applied to the synthesis of spirocyclic compounds as well as fused and bridged bicyclic lactones.
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Affiliation(s)
- Diana Cavalli
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne Switzerland
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2
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Borrel J, Waser J. SOMOphilic alkyne vs radical-polar crossover approaches: The full story of the azido-alkynylation of alkenes. Beilstein J Org Chem 2024; 20:701-713. [PMID: 38590536 PMCID: PMC10999984 DOI: 10.3762/bjoc.20.64] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 03/21/2024] [Indexed: 04/10/2024] Open
Abstract
We report the detailed background for the discovery and development of the synthesis of homopropargylic azides by the azido-alkynylation of alkenes. Initially, a strategy involving SOMOphilic alkynes was adopted, but only resulted in a 29% yield of the desired product. By switching to a radical-polar crossover approach and after optimization, a high yield (72%) of the homopropargylic azide was reached. Full insights are given about the factors that were essential for the success of the optimization process.
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Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
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3
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Marty C, Allouche EMD, Waser J. Interrupted Polonovski Strategy for the Synthesis of Functionalized Amino Acids and Peptides. Org Lett 2024; 26:456-460. [PMID: 38179927 DOI: 10.1021/acs.orglett.3c03603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
The α-functionalization of carbamate-protected hydroxylamine glycine derivatives, acting as imine surrogates via an interrupted Polonovski reaction, is described to access functionalized amino acid derivatives. The addition of C, N, O, and S nucleophiles was achieved in a one-pot procedure in 37% to 92% yield. This method could be extended to dipeptide derivatives for the functionalization of both the C-terminus and N-terminus.
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Affiliation(s)
- Christine Marty
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, Ch-1015, Lausanne, Switzerland
| | - Emmanuelle M D Allouche
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, Ch-1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, Ch-1015, Lausanne, Switzerland
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4
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Liu XY, Cai W, Ronceray N, Radenovic A, Fierz B, Waser J. Synthesis of Fluorescent Cyclic Peptides via Gold(I)-Catalyzed Macrocyclization. J Am Chem Soc 2023; 145:26525-26531. [PMID: 38035635 PMCID: PMC10722513 DOI: 10.1021/jacs.3c09261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
Rapid and efficient cyclization methods that form structurally novel peptidic macrocycles are of high importance for medicinal chemistry. Herein, we report the first gold(I)-catalyzed macrocyclization of peptide-EBXs (ethynylbenziodoxolones) via C2-Trp C-H activation. This reaction was carried out in the presence of protecting group free peptide sequences and is enabled by a simple commercial gold catalyst (AuCl·Me2S). The method displayed a rapid reaction rate (within 10 min), wide functional group tolerance (27 unprotected peptides were cyclized), and up to 86% isolated yield. The obtained highly conjugated cyclic peptide linker, formed through C-H alkynylation, can be directly applied to live-cell imaging as a fluorescent probe without further attachment of fluorophores.
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Affiliation(s)
- Xing-Yu Liu
- Laboratory
of Catalysis and Organic Synthesis, École
Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, 1015 Lausanne, Switzerland
| | - Wei Cai
- Laboratory
of Biophysical Chemistry of Macromolecules, Institute of Chemical
Sciences and Engineering, École Polytechnique
Fédérale de Lausanne, EPFL SB ISIC LCBM, 1015 Lausanne, Switzerland
| | - Nathan Ronceray
- Laboratory
of Nanoscale Biology, School of Engineering, Institute of Bioengineering, EPFL STI IBI LBEN, 1015 Lausanne, Switzerland
| | - Aleksandra Radenovic
- Laboratory
of Nanoscale Biology, School of Engineering, Institute of Bioengineering, EPFL STI IBI LBEN, 1015 Lausanne, Switzerland
| | - Beat Fierz
- Laboratory
of Biophysical Chemistry of Macromolecules, Institute of Chemical
Sciences and Engineering, École Polytechnique
Fédérale de Lausanne, EPFL SB ISIC LCBM, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory
of Catalysis and Organic Synthesis, École
Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, 1015 Lausanne, Switzerland
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5
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Nguyen TVT, Bossonnet A, Wodrich MD, Waser J. Photocatalyzed [2σ + 2σ] and [2σ + 2π] Cycloadditions for the Synthesis of Bicyclo[3.1.1]heptanes and 5- or 6-Membered Carbocycles. J Am Chem Soc 2023; 145:25411-25421. [PMID: 37934629 DOI: 10.1021/jacs.3c09789] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
We report the use of photocatalysis for the homolytic ring-opening of carbonyl cyclopropanes. In contrast to previous studies, our approach does not require a metal cocatalyst or a strong reductant. The carbonyl cyclopropanes can be employed for both [2σ + 2σ] and [2σ + 2π] annulation with either alkenes/alkynes or bicyclo[1.1.0]butanes, yielding cyclopent-anes/-enes and bicyclo[3.1.1]heptanes (BCHs), respectively. BCHs are promising bioisosteres for 1,2,4,5 tetra-substituted aromatic rings. Mechanistic studies, including density functional theory computation and a trapping experiment with DMPO, support a 1,3-biradical generated from cyclopropane as a key intermediate for these transformations.
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Affiliation(s)
- Tin V T Nguyen
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne Ch-1015, Switzerland
| | - André Bossonnet
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne Ch-1015, Switzerland
| | - Matthew D Wodrich
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne Ch-1015, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne Ch-1015, Switzerland
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6
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Palamini P, Borrel J, Djaïd M, Delattre M, Waser J. Acyl-Ethynylbenziodoxolone (acyl-EBX): Access to Ketene Dithioarylacetals. Org Lett 2023; 25:7535-7539. [PMID: 37801735 DOI: 10.1021/acs.orglett.3c02869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
We report the synthesis of ketene dithioarylacetals in 40-97% yield using thiophenols and acyl-EBXs (ethynylbenziodoxolones) generated in situ from a common hypervalent iodine precursor and alkynyl trifluoroborate salts. The products could be further modified to afford functionalized ketene dithioacetals and various S-substituted heterocycles.
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Affiliation(s)
- Pierre Palamini
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Maël Djaïd
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Morgane Delattre
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
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7
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Milzarek TM, Ramirez NP, Liu XY, Waser J. One-pot synthesis of functionalized bis(trifluoromethylated)benziodoxoles from iodine(I) precursors. Chem Commun (Camb) 2023; 59:12637-12640. [PMID: 37791867 DOI: 10.1039/d3cc04525k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Bis(trifluoromethylated)benziodoxoles (Bx) are broadly used cyclic hypervalent iodine reagents due to their stability and unique chemical properties. However, current methods to access them require several steps and long reaction times, making their synthesis tedious. Herein, a direct one-pot synthesis of bis(trifluoromethylated) Bx reagents from iodine(I) precursors is reported, enabling the synthesis of functionalized reagents.
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Affiliation(s)
- Tobias M Milzarek
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
| | - Nieves P Ramirez
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
| | - Xing-Yu Liu
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
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8
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Smyrnov V, Waser J. Semipinacol Rearrangement of Cyclopropenylcarbinols for the Synthesis of Highly Substituted Cyclopropanes. Org Lett 2023; 25:6999-7003. [PMID: 37707959 DOI: 10.1021/acs.orglett.3c02543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
An electrophile-induced semipinacol rearrangement of cyclopropenylcarbinols is reported. This transformation gives access to various polyfunctionalized cyclopropanes under mild metal-free conditions. The scope of the reaction includes iodine, sulfur and selenium electrophiles, aryl and strained ring migrating groups, and diverse substitution patterns on the cyclopropene. The reaction is particularly efficient for the synthesis of small ring-containing spirocycles, which are important rigid three-dimensional building blocks for medicinal chemistry.
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Affiliation(s)
- Vladyslav Smyrnov
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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9
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Palamini P, Allouche EMD, Waser J. Iron-Catalyzed Synthesis of α-Azido α-Amino Esters via the Alkylazidation of Alkenes. Org Lett 2023; 25:6791-6795. [PMID: 37684011 PMCID: PMC10521020 DOI: 10.1021/acs.orglett.3c02153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Indexed: 09/10/2023]
Abstract
An iron-catalyzed alkylazidation of dehydroamino acids using peroxides as alkyl radical precursors is described. Non-natural azidated amino esters bearing an α-alkyl chain could be obtained in 18-94% yields using TMSN3 as an azide source. The obtained α-alkyl-α-azide α-amino esters could be further functionalized through cycloaddition or azide reduction with amide couplings to afford aminal-type peptides, α-triazolo amino acids, and tetrahydro-triazolopyridine, showing the great versatility of this now easily accessible class of amino acids.
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Affiliation(s)
- Pierre Palamini
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Emmanuelle M. D. Allouche
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and
Organic
Synthesis, Institut des Sciences et Ingénierie
Chimique, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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10
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Borrel J, Waser J. Azido-alkynylation of alkenes through radical-polar crossover. Chem Sci 2023; 14:9452-9460. [PMID: 37712015 PMCID: PMC10498506 DOI: 10.1039/d3sc03309k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 08/10/2023] [Indexed: 09/16/2023] Open
Abstract
We report an azido-alkynylation of alkenes allowing a straightforward access to homopropargylic azides by combining hypervalent iodine reagents and alkynyl-trifluoroborate salts. The design of a photocatalytic redox-neutral radical polar crossover process was key to develop this transformation. A variety of homopropargylic azides possessing electron-rich and -poor aryls, heterocycles or ether substituents could be accessed in 34-84% yield. The products are synthetically useful building blocks that could be easily transformed into pyrroles or bioactive amines.
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Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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11
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Liu XY, Ji X, Heinis C, Waser J. Peptide-Hypervalent Iodine Reagent Chimeras: Enabling Peptide Functionalization and Macrocyclization. Angew Chem Int Ed Engl 2023; 62:e202306036. [PMID: 37311172 DOI: 10.1002/anie.202306036] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 06/15/2023]
Abstract
Herein, we report a novel strategy for the modification of peptides based on the introduction of highly reactive hypervalent iodine reagents-ethynylbenziodoxolones (EBXs)-onto peptides. These peptide-EBXs can be readily accessed, by both solution- and solid-phase peptide synthesis (SPPS). They can be used to couple the peptide to other peptides or a protein through reaction with Cys, leading to thioalkynes in organic solvents and hypervalent iodine adducts in water buffer. Furthermore, a photocatalytic decarboxylative coupling to the C-terminus of peptides was developed using an organic dye and was also successful in an intramolecular fashion, leading to macrocyclic peptides with unprecedented crosslinking. A rigid linear aryl alkyne linker was essential to achieve high affinity for Keap1 at the Nrf2 binding site with potential protein-protein interaction inhibition.
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Affiliation(s)
- Xing-Yu Liu
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015, Lausanne, Switzerland
| | - Xinjian Ji
- Laboratory of Therapeutic Proteins and Peptides, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015, Lausanne, Switzerland
| | - Christian Heinis
- Laboratory of Therapeutic Proteins and Peptides, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015, Lausanne, Switzerland
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12
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Milzarek TM, Waser J. Synthesis of Trifluoromethylated Alkenes: Hypervalent Iodine Meets High-Valent Copper. Angew Chem Int Ed Engl 2023:e202306128. [PMID: 37311164 DOI: 10.1002/anie.202306128] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/10/2023] [Accepted: 06/12/2023] [Indexed: 06/15/2023]
Abstract
The first trifluoromethylation of vinylbenziodoxolones (VBX) is reported herein. The synthetic method is based bench-stable, high-valent copper(III) species and can be initiated under thermal conditions and/or irradiation (365 nm) giving access to trifluoromethylated alkenes stereoselectively. Various VBX reagents derived from tyrosine, cysteine, small peptides, thiols and amides can be used as precursors. The obtained alkenes could be further functionalized by reduction or epoxidation of the trifluoromethylated double bond. Furthermore, the method could be applied in a large-scale batch/flow synthesis and could be performed under visible light irradiation.
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Affiliation(s)
- Tobias Michael Milzarek
- École Polytechnique Fédérale de Lausanne: Ecole Polytechnique Federale de Lausanne, ISIC, SWITZERLAND
| | - Jerome Waser
- Ecole Polytechnique Federale de Lausanne, ISIC - Laboratory of Catalysis and Organic Synthesis, EPFL BCH 4306 Batiment chimie UNIL, 1015, Lausanne, SWITZERLAND
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13
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Ramirez NP, Waser J. Copper(I)-BOX Catalyzed Asymmetric 3-Component Reaction for the Synthesis of Trifluoromethylated Propargylic Ethers and Anilines. Angew Chem Int Ed Engl 2023:e202305776. [PMID: 37262135 DOI: 10.1002/anie.202305776] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/01/2023] [Accepted: 06/01/2023] [Indexed: 06/03/2023]
Abstract
An asymmetric 3-component reaction between EthynylBenziodoXoles (EBXs), 2,2,2-trifluorodiazoethane and nucleophiles catalyzed by a Cu(I)-BOX (Bisoxazoline) catalyst is described. This protocol gives access to chiral trifluoromethylated propargyl ethers and anilines, which are valuable building blocks in synthetic and medicinal chemistry. The reaction proceeds with high enantioselectivity and yield with different nucleophiles such as primary, secondary and tertiary alcohols, as well as both electron-rich and electron-poor anilines. Aryl-, alkyl- and silyl-substituted alkynes can be successfully introduced as electrophiles. In case of chiral substrates, high catalyst control was observed, leading to good diastereoselectivity.
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Affiliation(s)
- Nieves P Ramirez
- École Polytechnique Fédérale de Lausanne: Ecole Polytechnique Federale de Lausanne, ISIC, SWITZERLAND
| | - Jerome Waser
- Ecole Polytechnique Federale de Lausanne, ISIC - Laboratory of Catalysis and Organic Synthesis, EPFL BCH 4306 Batiment chimie UNIL, 1015, Lausanne, SWITZERLAND
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14
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Robert EGL, Pirenne V, Wodrich MD, Waser J. Donor-Acceptor Aminocyclobutane Monoesters: Synthesis and Silylium-Catalyzed (4+2) Annulation with Indoles. Angew Chem Int Ed Engl 2023:e202302420. [PMID: 37074758 DOI: 10.1002/anie.202302420] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/16/2023] [Accepted: 04/18/2023] [Indexed: 04/20/2023]
Abstract
A convenient one-step synthesis of β-aminocyclobutane monoesters starting from commercially available reagents is reported. The obtained strained rings undergo (4+2) dearomative annulation with indole partners using silylium catalysis. This organocatalyzed annulation provided tricyclic indolines with four new stereocenters in up to quantitative yield and >95:5 diastereoselectivity and can proceed both intra- and intermolecularly. When performed intramolecularly, the tetracyclic structure of either akuamma or malagasy alkaloids was obtained selectively depending on the temperature of the reaction. This divergent outcome could be rationalized based on DFT calculations.
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Affiliation(s)
| | | | | | - Jerome Waser
- Ecole Polytechnique Federale de Lausanne, ISIC - Laboratory of Catalysis and Organic Synthesis, EPFL BCH 4306 Batiment chimie UNIL, 1015, Lausanne, SWITZERLAND
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15
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Le Du E, Ramirez NP, Nicolai S, Scopelliti R, Fadaei‐Tirani F, Wodrich MD, Hari DP, Waser J. X‐Ray and NMR Structural Data of Ethynylbenziodoxolones (EBXs) Reagents and Their Analogues. Helv Chim Acta 2023. [DOI: 10.1002/hlca.202200175] [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: 02/16/2023]
Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
| | - Nieves P. Ramirez
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
| | - Rosario Scopelliti
- Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC GE BCH 2111, CH-1015 Lausanne Switzerland
| | - Farzaneh Fadaei‐Tirani
- Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC GE BCH 2111, CH-1015 Lausanne Switzerland
| | - Matthew D. Wodrich
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
| | - Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306, CH-1015 Lausanne Switzerland
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16
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Declas N, Maynard JRJ, Menin L, Gasilova N, Götze S, Sprague JL, Stallforth P, Matile S, Waser J. Correction: Tyrosine bioconjugation with hypervalent iodine. Chem Sci 2023; 14:393-394. [PMID: 36687350 PMCID: PMC9811502 DOI: 10.1039/d2sc90252d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
[This corrects the article DOI: 10.1039/D2SC04558C.].
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Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
| | - John R. J. Maynard
- Department of Organic Chemistry, University of Geneva1211 GenevaSwitzerland
| | - Laure Menin
- Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, EPFL1015 LausanneSwitzerland
| | - Natalia Gasilova
- Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, EPFL1015 LausanneSwitzerland
| | - Sebastian Götze
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Jakob L. Sprague
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Pierre Stallforth
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva1211 GenevaSwitzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
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17
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Amos SGE, Le Vaillant F, Waser J. Exploring Photoredox‐Catalyzed (Re)functionalizations with Core‐Modified Benziodoxolones. Helv Chim Acta 2022. [DOI: 10.1002/hlca.202200161] [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: 11/23/2022]
Affiliation(s)
| | | | - Jerome Waser
- Ecole Polytechnique Federale de Lausanne ISIC - Laboratory of Catalysis and Organic Synthesis EPFL BCH 4306 Batiment chimie UNIL 1015 Lausanne SWITZERLAND
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18
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Nguyen TVT, Wodrich MD, Waser J. Substrate-controlled C-H or C-C alkynylation of cyclopropanes: generation of aryl radical cations by direct light activation of hypervalent iodine reagents. Chem Sci 2022; 13:12831-12839. [PMID: 36519037 PMCID: PMC9645386 DOI: 10.1039/d2sc04344k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/10/2022] [Indexed: 09/16/2023] Open
Abstract
We report the first oxidative C-H alkynylation of arylcyclopropanes. Irradiation of ethynylbenziodoxolone (EBX) reagents with visible light at 440 nm promoted the reaction. By the choice of the aryl group on the cyclopropane, it was possible to completely switch the outcome of the reaction from the alkynylation of the C-H bond to the oxyalkynylation of the C-C bond, which proceeded without the need for a catalyst, in contrast to previous works. The oxyalkynylation could also be extended to aminocyclopropanes as well as styrenes. Computations indicated that the C-H activation became a favoured nearly barrierless process in the presence of two ortho methyl groups on the benzene ring.
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Affiliation(s)
- Tin V T Nguyen
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Matthew D Wodrich
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
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19
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Declas N, Maynard JRJ, Menin L, Gasilova N, Götze S, Sprague JL, Stallforth P, Matile S, Waser J. Tyrosine bioconjugation with hypervalent iodine. Chem Sci 2022; 13:12808-12817. [PMID: 36519034 PMCID: PMC9645396 DOI: 10.1039/d2sc04558c] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/03/2022] [Indexed: 01/24/2023] Open
Abstract
Hypervalent iodine reagents have recently emerged as powerful tools for late-stage peptide and protein functionalization. Herein we report a tyrosine bioconjugation methodology for the introduction of hypervalent iodine onto biomolecules under physiological conditions. Tyrosine residues were engaged in a selective addition onto the alkynyl bond of ethynylbenziodoxolones (EBX), resulting in stable vinylbenziodoxolones (VBX) bioconjugates. The methodology was successfully applied to peptides and proteins and tolerated all other nucleophilic residues, with the exception of cysteine. The generated VBX were further functionalized by palladium-catalyzed cross-coupling and azide-alkyne cycloaddition reactions. The method could be successfully used to modify bioactive natural products and native streptavidin to enable thiol-mediated cellular uptake.
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Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
| | - John R. J. Maynard
- Department of Organic Chemistry, University of Geneva1211 GenevaSwitzerland
| | - Laure Menin
- Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, EPFL1015 LausanneSwitzerland
| | - Natalia Gasilova
- Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, EPFL1015 LausanneSwitzerland
| | - Sebastian Götze
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Jakob L. Sprague
- Department of Microbial Pathogenicity Mechanisms, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Pierre Stallforth
- Department of Paleobiotechnology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute (HKI)07745 JenaGermany
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva1211 GenevaSwitzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
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20
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Das A, Waser J. Pd-catalyzed functionalization of alkenes and alkynes using removable tethers. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Simonet-Davin R, Waser J. Azidation with Hypervalent Iodine Reagents. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1966-4974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
In this short review, we describe applications of hypervalent iodine reagents for the azidation of organic compounds from the seminal publications to the most recent reports. After reviewing selected examples of azidations based on the use of in situ formed unstable non-cyclic reagents, we focus more in details on stable cyclic hypervalent iodine reagents. Important advances in the azidation of C–H bonds, alkenes as well as other transformations are described. Rather than being comprehensive, we selected to highlight the key reports that especially contributed to the advancement of research in the field in our opinion.
Table of content:
1. Introduction
2. Non-Cyclic λ3-Iodanes
3. Heterocyclic λ3-Iodanes
3.1 Azidation of aliphatic C–H Bonds
3.2 Azidation of Alkenes
3.3 Other Azidations
4. Conclusion and Outlook
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Affiliation(s)
| | - Jerome Waser
- SB-ISIC-LCSO, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
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22
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Abstract
We report a copper-catalyzed alkynylation of azadipeptides using ethynylbenziodoxolone (EBX) reagents. Nonsymmetrical ynehydrazides could be obtained in 25-97% yield using azaglycine derivatives as nucleophiles. The transformation is compatible with most functional groups naturally occurring on amino acid side chains and allows the transfer of silyl-, alkyl-, and aryl-substituted alkynes. The obtained α-alkynyl azaglycine products could be further functionalized by nucleophilic attack or cycloaddition on the triple bond.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne, Switzerland
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23
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Abstract
Aminocyclopropanes are versatile building blocks for accessing high value-added nitrogen-containing products. To control ring-opening promoted by ring strain, the Lewis acid activation of donor-acceptor substituted systems is now well established. Over the last decade, alternative approaches have emerged proceeding via the formation of radical intermediates, alleviating the need for double activation of the cyclopropanes. This tutorial review summarizes key concepts and recent progress in ring-opening transformations of aminocyclopropanes via radical intermediates, divided into formal cycloadditions and 1,3-difunctionalizations.
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Affiliation(s)
- Ming-Ming Wang
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland. .,Department of Chemical Biology, Max Planck Institute for Medical Research, 69120, Heidelberg, Germany
| | - Tin V T Nguyen
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
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24
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Nicolai S, Waser J. (4+3) Annulation of Donor‐Acceptor Cyclopropanes and Azadienes: Highly Stereoselective Synthesis of Azepanones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209006] [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: 11/12/2022]
Affiliation(s)
- Stefano Nicolai
- EPFL ISIC: Ecole polytechnique federale de Lausanne Institut des Sciences et Ingenierie Chimiques SB ISIC EPFL SB ISIC LCSOBCH 4301 (Batochime UNIL)Av. F.-A. Forel 2 1015 Lausanne SWITZERLAND
| | - Jerome Waser
- EPFL: Ecole Polytechnique Federale de Lausanne SB, Institut des sciences et ingénierie chimiques EPFL SB ISIC LCSOBCH 4306 (Bât. BCH)Av. F.-A. Forel 2 1015 Lausanne SWITZERLAND
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25
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Das A, Buzzetti L, Puriņš M, Waser J. Palladium-Catalyzed trans-Hydroalkoxylation: Counterintuitive Use of an Aryl Iodide Additive to Promote C–H Bond Formation. ACS Catal 2022; 12:7565-7570. [PMID: 35799768 PMCID: PMC9251722 DOI: 10.1021/acscatal.2c01809] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/03/2022] [Indexed: 12/31/2022]
Abstract
![]()
We report an enantioselective
palladium-catalyzed trans-hydroalkoxylation of propargylic
amines with a trifluoroacetaldehyde-derived
tether to build chiral oxazolidines. Diastereoselective hydrogenation
using a heterogeneous palladium catalyst then gave access to protected
benzylic amino alcohols in 45–87% yields and 84–94%
ee values. Hydroalkoxylation of the alkynes required a catalytic amount
of aryl iodide, highlighting the counterintuitive key role played
by a putative Pd(II)/ArI oxidative addition complex to promote oxypalladation/protodemetalation.
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Affiliation(s)
- Ashis Das
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Luca Buzzetti
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Mikus Puriņš
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
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26
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Amos SGE, Waser J. Radical Alkynylations with EthynylBenziodoXolones: from Photocatalysis to Direct Excitation. Chimia (Aarau) 2022. [DOI: 10.2533/chimia.2022.312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Ethynylbenziodoxolones (EBXs) have recently emerged as potent reagents for the alkynylation of radicals. Their combination with photocatalysis allows the synthesis of valuable alkynes at room temperature. Herein, we discuss two photomediated strategies for the synthesis of internal alkynes. The first transformation is a 1,2-oxyalkynylation of N- and O-alkenes using 4ClCzIPN as a photocatalyst. The second strategy makes use of EBXs as strong photooxidants allowing the oxidation of a variety of substrates with no need for a photocatalyst.
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27
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Allouche EMD, Simonet‐Davin R, Waser J. N
‐Terminal Selective C−H Azidation of Proline‐Containing Peptides: a Platform for Late‐Stage Diversification. Chemistry 2022; 28:e202200368. [PMID: 35137991 PMCID: PMC9306896 DOI: 10.1002/chem.202200368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Indexed: 11/08/2022]
Abstract
A methodology for the C−H azidation of N‐terminal proline‐containing peptides was developed employing only commercially available reagents. Peptides bearing a broad range of functionalities and containing up to 6 amino acids were selectively azidated at the carbamate‐protected N‐terminal residue in presence of the numerous other functional groups present on the molecules. Post‐functionalizations of the obtained aminal compounds were achieved: cycloaddition reactions or C−C bond formations via a sequence of imine formation/nucleophilic addition were performed, offering an easy access to diversified peptides.
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Affiliation(s)
- Emmanuelle M. D. Allouche
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Raphaël Simonet‐Davin
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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28
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Abstract
For the enantioselective diversification of a single starting material, a different chiral catalyst is usually required for each transformation. Herein, we extend the concept of catalytically formed chiral auxiliary from hydrogenation to the asymmetric cyclopropanation and epoxidation of tetra-substituted olefins, alleviating the need for different chiral catalysts in the alkene functionalization step. The chiral auxiliary is catalytically constructed from propargylic amines in a Pd-catalyzed enantioselective carboetherification step using a commercially available trifluoroacetaldehyde hemiacetal tether. The installed auxiliary is then controlling the stereochemistry of the cyclopropanation and the epoxidation using standard highly reactive reagents to give enantioenriched spirocyclic aminomethylcyclopropanols and α-amino-α-hydroxy ketones.
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Affiliation(s)
- Mikus Puriņš
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
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29
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Allouche EMD, Grinhagena E, Waser J. Hypervalent Iodine‐Mediated Late‐Stage Peptide and Protein Functionalization. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112287] [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: 11/09/2022]
Affiliation(s)
- Emmanuelle M. D. Allouche
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Elija Grinhagena
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402 1015 Lausanne Switzerland
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30
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Puriņš M, Waser J. Asymmetric Cyclopropanation and Epoxidation via a Catalytically Formed Chiral Auxiliary. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113925] [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)
- Mikus Puriņš
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
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31
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Robert EGL, Le Du E, Waser J. Synthesis of Polycyclic Aminal Heterocycles via Decarboxylative Cyclisation of Dipeptide Derivatives. Chem Commun (Camb) 2022; 58:3473-3476. [DOI: 10.1039/d2cc00167e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxidative-decarboxylative intramolecular cyclisation of dipeptide derivatives is reported. This transformation is promoted by phenyl iodine (III) diacetate (PIDA) in combination with BF3·OEt2. The reaction gives access to a variety...
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32
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Abstract
Ethynylbenziodoxolones (EBXs) are commonly encountered reagents for the electrophilic alkynylation of nucleophiles. Herein, we report a one-pot, two-step process for EBX generation and their direct application in substrate functionalization. Our approach enables us to bypass the originally mandatory isolation and purification of the reagents, resulting in a more efficient synthesis. We could apply this process to seven different transformations involving both two- and one-electron nucleophiles to obtain a large variety of alkynylated products.
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Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
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33
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Amos SGE, Cavalli D, Le Vaillant F, Waser J. Direct Photoexcitation of Ethynylbenziodoxolones: An Alternative to Photocatalysis for Alkynylation Reactions**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Stephanie G. E. Amos
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne CH-1015 Lausanne Switzerland
| | - Diana Cavalli
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne CH-1015 Lausanne Switzerland
| | - Franck Le Vaillant
- Max-Planck-Institut für Kohlenforschung Mülheim an der Ruhr 45470 Germany
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne CH-1015 Lausanne Switzerland
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34
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Amos SGE, Cavalli D, Le Vaillant F, Waser J. Direct Photoexcitation of Ethynylbenziodoxolones: An Alternative to Photocatalysis for Alkynylation Reactions*. Angew Chem Int Ed Engl 2021; 60:23827-23834. [PMID: 34403571 PMCID: PMC8596672 DOI: 10.1002/anie.202110257] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Indexed: 11/23/2022]
Abstract
Ethynylbenziodoxolones (EBXs) are commonly used as radical traps in photocatalytic alkynylations. Herein, we report that aryl-substituted EBX reagents can be directly activated by visible light irradiation. They act as both oxidants and radical traps, alleviating the need for a photocatalyst in several reported EBX-mediated processes, including decarboxylative and deboronative alkynylations, the oxyalkynylation of enamides and the C-H alkynylation of THF. Furthermore, the method could be applied to the synthesis of alkynylated quaternary centers from tertiary alcohols via stable oxalate salts and from tertiary amines via aryl imines. A photocatalytic process using 4CzIPN as an organic dye was also developed for the deoxyalkynylation of oxalates.
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Affiliation(s)
- Stephanie G. E. Amos
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) CatalysisInstitut des Sciences et Ingénierie ChimiqueEcole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
| | - Diana Cavalli
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) CatalysisInstitut des Sciences et Ingénierie ChimiqueEcole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
| | | | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research (NCCR) CatalysisInstitut des Sciences et Ingénierie ChimiqueEcole Polytechnique Fédérale de LausanneCH-1015LausanneSwitzerland
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35
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Abstract
Hypervalent iodine compounds are powerful reagents for the development of novel transformations. As they exhibit low toxicity, high functional group tolerance, and stability in biocompatible media, they have been used for the functionalization of biomolecules. Herein, we report recent advances up to June 2021 in peptide and protein modification using hypervalent iodine reagents. Their use as group transfer or oxidizing reagents is discussed in this Minireview, including methods targeting polar, aromatic, or aliphatic amino acids and peptide termini.
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Affiliation(s)
- Emmanuelle M D Allouche
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402, 1015, Lausanne, Switzerland
| | - Elija Grinhagena
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC, LCSO, BCH 1402, 1015, Lausanne, Switzerland
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36
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Abstract
We report the functionalization of cysteine residues with lipophilic alkynes bearing a silyl group or an alkyl chain using amphiphilic ethynylbenziodoxolone reagents (EBXs). The reactions were carried out in buffer (pH 6 to 9), without organic co-solvent or removal of oxygen, either at 37 °C or room temperature. The transformation led to a significant increase of peptide lipophilicity and worked for aromatic thiols, homocysteine, cysteine, and peptides containing 4 to 18 amino acids. His6 -Cys-Ubiquitin was also alkynylated under physiological conditions. Under acidic conditions, the thioalkynes were converted into thioesters, which could be cleaved in the presence of hydroxylamine.
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Affiliation(s)
- Abhaya Kumar Mishra
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Romain Tessier
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
- Present address: Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Durga Prasad Hari
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
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37
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Ramirez NP, Pisella G, Waser J. Cu(I)-Catalyzed gem-Aminoalkynylation of Diazo Compounds: Synthesis of Fluorinated Propargylic Amines. J Org Chem 2021; 86:10928-10938. [PMID: 34260244 DOI: 10.1021/acs.joc.1c01423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The gem-aminoalkynylation of fluorinated diazo compounds catalyzed by a simple Cu(I) salt is described. This three-component reaction allows the synthesis of propargylic amines with broad functional group tolerance. Both electron-rich and electron-poor anilines can be used as nucleophiles and alkyl-, aryl-, and silyl-substituted EthynylBenziodoXoles (EBX) as electrophiles.
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Affiliation(s)
- Nieves P Ramirez
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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Abstract
Diamines are essential building blocks for the synthesis of agrochemicals, drugs, and organic materials, yet their synthesis remains challenging, as both nitrogens need to be differentiated and diverse substitution patterns (1,2, 1,3, or 1,4) are required. We report herein a new strategy giving access to 1,2, 1,3, and 1,4 amido azides as orthogonally protected diamines based on the nitrogen-directed diazidation of alkenes, cyclopropanes, and cyclobutanes. Commercially available copper thiophene-2-carboxylate (CuTc, 2 mol %) as catalyst promoted the diazidation of both π and σ C-C bonds within 10 min in the presence of readily available oxidants and trimethylsilyl azide. Selective substitution of the formed α-amino azide by carbon nucleophiles (electron-rich aromatic, malonate, organosilicon, organoboron, organozinc, and organomagnesium compounds) was then achieved in a one-pot fashion, leading to the formation of 1,2-, 1,3-, and 1,4-diamines with the amino groups protected orthogonally as an amide/carbamate and an azide.
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Affiliation(s)
- Ming-Ming Wang
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Tin V T Nguyen
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, 1015 Lausanne, Switzerland
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39
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Le Du E, Duhail T, Wodrich MD, Scopelliti R, Fadaei‐Tirani F, Anselmi E, Magnier E, Waser J. Structure and Reactivity of N-Heterocyclic Alkynyl Hypervalent Iodine Reagents. Chemistry 2021; 27:10979-10986. [PMID: 33978974 PMCID: PMC8361724 DOI: 10.1002/chem.202101475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Indexed: 12/23/2022]
Abstract
Ethynylbenziodoxol(on)e (EBX) cyclic hypervalent iodine reagents have become popular reagents for the alkynylation of radicals and nucleophiles, but only offer limited possibilities for further structure and reactivity fine-tuning. Herein, the synthesis of new N-heterocyclic hypervalent iodine reagents with increased structural flexibility based on amide, amidine and sulfoximine scaffolds is reported. Solid-state structures of the reagents are reported and the analysis of the I-Calkyne bond lengths allowed assessing the trans-effect of the different substituents. Molecular electrostatic potential (MEP) maps of the reagents, derived from DFT computations, revealed less pronounced σ-hole regions for sulfonamide-based compounds. Most reagents reacted well in the alkynylation of β-ketoesters. The alkynylation of thiols afforded more variable yields, with compounds with a stronger σ-hole reacting better. In metal-mediated transformations, the N-heterocyclic hypervalent iodine reagents gave inferior results when compared to the O-based EBX reagents.
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Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Thibaut Duhail
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Matthew D. Wodrich
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Rosario Scopelliti
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Farzaneh Fadaei‐Tirani
- Institute of Chemical Sciences and EngineeringEcole Polytechnique Fédérale de LausanneEPFL SB ISIC GE, BCH 2111, 1015 LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
| | - Elsa Anselmi
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
- Université de ToursFaculté des Sciences et Techniques37200ToursFrance
| | - Emmanuel Magnier
- Institut Lavoisier de VersaillesUniversité Paris-Saclay, UVSQ, CNRS, UMR 81807800VersaillesFrance
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 43061015LausanneSwitzerland
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Abstract
We report the synthesis of quinolines using cyclopropenes and an azidobenziodazolone (ABZ) hypervalent iodine reagent as an azide radical source under visible-light irradiation. Multisubstituted quinoline products were obtained in 34-81% yield. The reaction was most efficient for 3-trifluoromethylcyclopropenes, affording valuable 4-trifluoromethylquinolines. The transformation probably proceeds through the cyclization of an iminyl radical formed by the addition of the azide radical on the cyclopropene double bond, followed by ring-opening and fragmentation.
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Affiliation(s)
- Vladyslav Smyrnov
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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41
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Affiliation(s)
- Abhaya Kumar Mishra
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Romain Tessier
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Present address: Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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42
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Lim B, Cheng Y, Kato T, Pham A, Le Du E, Mishra AK, Grinhagena E, Moreau D, Sakai N, Waser J, Matile S. Inhibition of Thiol‐Mediated Uptake with Irreversible Covalent Inhibitors. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100085] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bumhee Lim
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Yangyang Cheng
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Takehiro Kato
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Anh‐Tuan Pham
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306 1015 Lausanne Switzerland
| | - Abhaya Kumar Mishra
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306 1015 Lausanne Switzerland
| | - Elija Grinhagena
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306 1015 Lausanne Switzerland
| | - Dimitri Moreau
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Naomi Sakai
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
| | - Jerome Waser
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO BCH 4306 1015 Lausanne Switzerland
| | - Stefan Matile
- Department of Organic Chemistry University of Geneva Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
- National Centre of Competence in Research (NCCR) Chemical Biology Quai Ernest Ansermet 30 CH-1211 Geneva 4 Switzerland
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43
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Pirenne V, Robert EGL, Waser J. Catalytic (3 + 2) annulation of donor-acceptor aminocyclopropane monoesters and indoles. Chem Sci 2021; 12:8706-8712. [PMID: 34257869 PMCID: PMC8246098 DOI: 10.1039/d1sc01127h] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 05/04/2021] [Indexed: 12/16/2022] Open
Abstract
The efficient catalytic activation of donor-acceptor aminocyclopropanes lacking the commonly used diester acceptor is reported here in a (3 + 2) dearomative annulation with indoles. Bench-stable tosyl-protected aminocyclopropyl esters were converted into cycloadducts in 46-95% yields and up to 95 : 5 diastereomeric ratio using catalytic amounts of triethylsilyl triflimide. Tricyclic indoline frameworks containing four stereogenic centers including all-carbon quaternary centers were obtained.
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Affiliation(s)
- Vincent Pirenne
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Emma G L Robert
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
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44
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Ceballos J, Grinhagena E, Sangouard G, Heinis C, Waser J. Cys-Cys and Cys-Lys Stapling of Unprotected Peptides Enabled by Hypervalent Iodine Reagents. Angew Chem Int Ed Engl 2021; 60:9022-9031. [PMID: 33450121 PMCID: PMC8048981 DOI: 10.1002/anie.202014511] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/22/2020] [Indexed: 12/31/2022]
Abstract
Easy access to a wide range of structurally diverse stapled peptides is crucial for the development of inhibitors of protein-protein interactions. Herein, we report bis-functional hypervalent iodine reagents for two-component cysteine-cysteine and cysteine-lysine stapling yielding structurally diverse thioalkyne linkers. This stapling method works with unprotected natural amino acid residues and does not require pre-functionalization or metal catalysis. The products are stable to purification and isolation. Post-stapling modification can be accessed via amidation of an activated ester, or via cycloaddition onto the formed thioalkyne group. Increased helicity and binding affinity to MDM2 was obtained for a i,i+7 stapled peptide.
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Affiliation(s)
- Javier Ceballos
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 14021015LausanneSwitzerland
| | - Elija Grinhagena
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 14021015LausanneSwitzerland
| | - Gontran Sangouard
- Laboratory of Therapeutic Proteins and PeptidesEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LPPT, BCH 53051015LausanneSwitzerland
| | - Christian Heinis
- Laboratory of Therapeutic Proteins and PeptidesEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LPPT, BCH 53051015LausanneSwitzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de LausanneEPFL SB ISIC LCSO, BCH 14021015LausanneSwitzerland
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45
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Ceballos J, Grinhagena E, Sangouard G, Heinis C, Waser J. Cys–Cys and Cys–Lys Stapling of Unprotected Peptides Enabled by Hypervalent Iodine Reagents. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014511] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Javier Ceballos
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Elija Grinhagena
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Gontran Sangouard
- Laboratory of Therapeutic Proteins and Peptides Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LPPT, BCH 5305 1015 Lausanne Switzerland
| | - Christian Heinis
- Laboratory of Therapeutic Proteins and Peptides Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LPPT, BCH 5305 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
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46
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Hari DP, Pisella G, Wodrich MD, Tsymbal AV, Tirani FF, Scopelliti R, Waser J. Low-Temperature Intramolecular [4+2] Cycloaddition of Allenes with Arenes for the Synthesis of Diene Ligands. Angew Chem Int Ed Engl 2021; 60:5475-5481. [PMID: 33216417 DOI: 10.1002/anie.202012299] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 09/09/2020] [Indexed: 11/08/2022]
Abstract
The intramolecular [4+2] cycloaddition between arenes and allenes first reported by Himbert gives rapid access to rigid polycyclic scaffolds. Herein, we report a one-pot oxyalkynylation/cycloaddition reaction proceeding under mild conditions (23-90 °C) and providing complex polycyclic architectures with high efficiency, and atom and step economy. The bicyclo[2.2.2]octadiene products were obtained with a wide variety of useful functional groups and were successfully applied as chiral ligands for metal catalysis. Computational studies gave a first rationalization of the low activation energy for the cycloaddition based on counter-intuitive favorable dispersive interactions in the transition state.
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Affiliation(s)
- Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015, Lausanne, Switzerland.,Present address: School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015, Lausanne, Switzerland
| | - Matthew D Wodrich
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015, Lausanne, Switzerland
| | - Artem V Tsymbal
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei Tirani
- Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC-GE, BCH 2111, 1015, Lausanne, Switzerland
| | - Rosario Scopelliti
- Institute of Chemistry and Chemical Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC-GE, BCH 2111, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015, Lausanne, Switzerland
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47
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Muriel B, Waser J. Azide Radical Initiated Ring Opening of Cyclopropenes Leading to Alkenyl Nitriles and Polycyclic Aromatic Compounds. Angew Chem Int Ed Engl 2021; 60:4075-4079. [PMID: 33205851 DOI: 10.1002/anie.202013516] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 10/07/2020] [Revised: 11/04/2020] [Indexed: 01/05/2023]
Abstract
We report herein a radical-mediated amination of cyclopropenes. The transformation proceeds through a cleavage of the three-membered ring after the addition of an azide radical on the strained double bond and leads to tetrasubstituted alkenyl nitrile derivatives upon loss of N2 . With 1,2-diaryl substituted cyclopropenes, this methodology could be extended to a one-pot synthesis of highly functionalized polycyclic aromatic compounds (PACs). This transformation allows the synthesis of nitrile-substituted alkenes and aromatic compounds from rapidly accessed cyclopropenes using only commercially available reagents.
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Affiliation(s)
- Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
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48
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Hari DP, Pisella G, Wodrich MD, Tsymbal AV, Tirani FF, Scopelliti R, Waser J. Low‐Temperature Intramolecular [4+2] Cycloaddition of Allenes with Arenes for the Synthesis of Diene Ligands. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
- Present address: School of Chemistry University of Bristol, Cantock's Close Bristol BS8 1TS UK
| | - Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Matthew D. Wodrich
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Artem V. Tsymbal
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
| | - Farzaneh Fadaei Tirani
- Institute of Chemistry and Chemical Engineering Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC-GE, BCH 2111 1015 Lausanne Switzerland
| | - Rosario Scopelliti
- Institute of Chemistry and Chemical Engineering Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC-GE, BCH 2111 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne EPFL SB ISIC LCSO, BCH 1402 1015 Lausanne Switzerland
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49
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Muriel B, Waser J. Azide Radical Initiated Ring Opening of Cyclopropenes Leading to Alkenyl Nitriles and Polycyclic Aromatic Compounds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Bastian Muriel
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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50
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