1
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Martynova EA, Zuccarello M, Kronenberg D, Beliš M, Czapik A, Zhang Z, Van Hecke K, Kwit M, Baudoin O, Cavallo L, Nolan SP. Correction: Simple synthetic access to [Au(IBiox)Cl] complexes. Dalton Trans 2024; 53:8051. [PMID: 38655685 DOI: 10.1039/d4dt90069c] [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: 04/26/2024]
Abstract
Correction for 'Simple synthetic access to [Au(IBiox)Cl] complexes' by Ekaterina A. Martynova et al., Dalton Trans., 2023, 52, 7558-7563, https://doi.org/10.1039/D3DT01357J.
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Affiliation(s)
- Ekaterina A Martynova
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Domenic Kronenberg
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Marek Beliš
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Agnieszka Czapik
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
| | - Ziyun Zhang
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Marcin Kwit
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Luigi Cavallo
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
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2
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Miyakoshi T, Kronenberg D, Tamaki S, Lombardi R, Baudoin O. Studies towards the Enantioselective Synthesis of Cryptowolinol via Pd 0-Catalyzed C(sp 3)-H Arylation/Parallel Kinetic Resolution. Org Lett 2024; 26:2923-2927. [PMID: 38567800 DOI: 10.1021/acs.orglett.4c00386] [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: 04/20/2024]
Abstract
We report a model study towards the enantioselective synthesis of the dibenzopyrrocoline alkaloid (-)-cryptowolinol. The key step involves a challenging enantioselective Pd0-catalyzed C(sp3)-H arylation performed with a chiral NHC ligand, which proceeds via parallel kinetic resolution (PKR). A very efficient PKR process was achieved on a deoxygenated model substrate and was successfully transposed to a potential intermediate en route to (-)-cryptowolinol.
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Affiliation(s)
- Takeru Miyakoshi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Domenic Kronenberg
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Sota Tamaki
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Rafael Lombardi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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3
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Vyhivskyi O, Baudoin O. Total Synthesis of the Diterpenes (+)-Randainin D and (+)-Barekoxide via Photoredox-Catalyzed Deoxygenative Allylation. J Am Chem Soc 2024; 146. [PMID: 38618944 PMCID: PMC11046436 DOI: 10.1021/jacs.4c02224] [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: 02/13/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/16/2024]
Abstract
We report the first enantioselective total synthesis of diterpenoid randainin D, which possesses a hydroazulenone core with a β-substituted butenolide moiety on the cycloheptane ring. The trans-5/7 ring system was formed via a highly challenging ring-closing metathesis delivering the tetrasubstituted cycloheptenone. The butenolide moiety was installed via a novel deoxygenative allylation under Ir-photoredox catalysis, employing methyl oxalate as a red/ox tag. Moreover, the developed allylation was successfully utilized in the 7-step total synthesis of (+)-barekoxide. This study suggests that this deoxygenative allylation method is a promising strategy for the formation of Cq-C(sp3) bonds (Cq = quaternary center) in the context of natural product synthesis.
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Affiliation(s)
- Oleksandr Vyhivskyi
- Department of Chemistry, University
of Basel, St. Johanns-Ring
19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University
of Basel, St. Johanns-Ring
19, CH-4056 Basel, Switzerland
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4
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Kudashev A, Vergura S, Zuccarello M, Bürgi T, Baudoin O. Methylene C(sp 3 )-H Arylation Enables the Stereoselective Synthesis and Structure Revision of Indidene Natural Products. Angew Chem Int Ed Engl 2024; 63:e202316103. [PMID: 37997293 DOI: 10.1002/anie.202316103] [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: 10/24/2023] [Revised: 11/20/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
The divergent synthesis of two indane polyketides of the indidene family, namely (±)-indidene A (11 steps, 1.7 %) and (+)-indidene C (13 steps, 1.3 %), is reported. The synthesis of the trans-configured common indane intermediate was enabled by palladium(0)-catalyzed methylene C(sp3 )-H arylation, which was performed in both racemic and enantioselective (e.r. 99 : 1) modes. Further elaboration of this common intermediate by nickel-catalyzed dehydrogenative coupling allowed the rapid installation of the aroyl moiety of (±)-indidene A. In parallel, the biphenyl system of (±)- and (+)-indidene C was constructed by Suzuki-Miyaura coupling. These investigations led us to revise the structures of indidenes B and C.
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Affiliation(s)
- Anton Kudashev
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Stefania Vergura
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Thomas Bürgi
- University of Geneva, Department of Physical Chemistry, 30 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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5
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Geraci A, Stojiljković U, Antien K, Salameh N, Baudoin O. Iridium(III)-Catalyzed Intermolecular C(sp 3 )-H Amidation for the Synthesis of Chiral 1,2-Diamines. Angew Chem Int Ed Engl 2023; 62:e202309263. [PMID: 37493209 DOI: 10.1002/anie.202309263] [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: 06/30/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 07/27/2023]
Abstract
Chiral 1,2-diamines are privileged scaffolds among bioactive natural products, active pharmaceutical ingredients, ligands for transition-metal-based asymmetric catalysis and organocatalysts. Despite this interest, the construction of chiral 1,2-diamine motifs still remains a challenge. To address this, an iridium(III)-catalyzed intermolecular C(sp3 )-H amidation reaction was developed. This method relies on the design of a new, cheap and cleavable exo-protecting/directing group derived from camphorsulfonic acid, which is directly installed from easily accessible precursors, and furnishes scalemic free 1,2-diamines upon cleavage of both nitrogen substituents. It was found applicable to both α-secondary and α-tertiary-1,2-diamines, for which a two-step protocol involving intermolecular olefin hydroamination and C(sp3 )-H amidation was developed. Kinetic and computational studies provided insights into the observed reactivity difference between pairs of diastereoisomeric substrates.
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Affiliation(s)
- Andrea Geraci
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Uros Stojiljković
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Kevin Antien
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Nihad Salameh
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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6
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Wheatley M, Zuccarello M, Tsitopoulou M, Macgregor SA, Baudoin O. Effect of α-Substitution on the Reactivity of C(sp 3)-H Bonds in Pd 0-Catalyzed C-H Arylation. ACS Catal 2023; 13:12563-12570. [PMID: 37822862 PMCID: PMC10563019 DOI: 10.1021/acscatal.3c03806] [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: 08/14/2023] [Revised: 08/22/2023] [Indexed: 10/13/2023]
Abstract
We report mechanistic studies on the reactivity of different α-substituted C(sp3)-H bonds, -CHnR (R = H, Me, CO2Me, CONMe2, OMe, and Ph, as well as the cyclopropyl and isopropyl derivatives -CH(CH2)2 and -CHMe2) in the context of Pd0-catalyzed C(sp3)-H arylation. Primary kinetic isotope effects, kH/kD, were determined experimentally for R = H (3.2) and Me (3.5), and these, along with the determination of reaction orders and computational studies, indicate rate-limiting C-H activation for all substituents except when R = CO2Me. This last result was confirmed experimentally (kH/kD ∼ 1). A reactivity scale for C(sp3)-H activation was then determined: CH2CO2Me > CH(CH2)2 ≥ CH2CONMe2 > CH3 ≫ CH2Ph > CH2Me > CH2OMe ≫ CHMe2. C-H activation involves AMLA/CMD transition states featuring intramolecular O → H-C H-bonding assisted by C-H → Pd agostic bonding. The "AMLA coefficient", χ, is introduced to quantify the energies associated with these interactions via natural bond orbital 2nd order perturbation theory analysis. Higher barriers correlate with lower χ values, which in turn signal a greater agostic interaction in the transition state. We believe that this reactivity scale and the underlying factors that determine this will be of use for future studies in transition-metal-catalyzed C(sp3)-H activation proceeding via the AMLA/CMD mechanism.
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Affiliation(s)
- Matthew Wheatley
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Marco Zuccarello
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Maria Tsitopoulou
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
| | - Stuart A. Macgregor
- Institute
of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K.
| | - Olivier Baudoin
- Department
of Chemistry, University of Basel, 4056 Basel, Switzerland
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7
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Salameh N, Valentini F, Baudoin O, Vaccaro L. A General Enantioselective C-H Arylation Using an Immobilized Recoverable Palladium Catalyst. ChemSusChem 2023:e202300609. [PMID: 37486306 DOI: 10.1002/cssc.202300609] [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] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/11/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
We herein report a general and efficient enantioselective C-H arylation of aryl bromides based on the use of BozPhos as the bisphosphine ligand and SP-NHC-PdII as recoverable heterogeneous catalyst. By exploiting the "release and catch" mechanism of action of the catalytic system, we used BozPhos as a broadly applicable chiral ligand, furnishing high enantioselectivities across all types of examined substrates containing methyl, cyclopropyl and aryl C-H bonds. For each reaction, the reaction scope was investigated, giving rise to 30 enantioenriched products, obtained with high yields and enantioselectivities, and minimal palladium leaching. The developed catalytic system provides a more sustainable solution compared to homogeneous systems for the synthesis of high added-value chiral products through recycling of the precious metal.
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Affiliation(s)
- Nihad Salameh
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Federica Valentini
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Luigi Vaccaro
- Laboratory of Green SOC, Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 8, 06124, Perugia, Italy
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8
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Martynova EA, Zuccarello M, Kronenberg D, Beliš M, Czapik A, Zhang Z, Van Hecke K, Kwit M, Baudoin O, Cavallo L, Nolan SP. Simple synthetic access to [Au(IBiox)Cl] complexes. Dalton Trans 2023; 52:7558-7563. [PMID: 37191083 DOI: 10.1039/d3dt01357j] [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: 05/17/2023]
Abstract
Green and sustainable access to chiral and achiral gold-IBiox complexes is reported. The gold complexes were synthesized using a simple, air-tolerant, weak base protocol carried out in a green solvent. Their catalytic activity was examined in the hydroamination of alkynes. The steric protection afforded the gold center by these ligands was quantified using the %Vbur model and compared with the most commonly encountered NHCs.
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Affiliation(s)
- Ekaterina A Martynova
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Domenic Kronenberg
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Marek Beliš
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Agnieszka Czapik
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Ziyun Zhang
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
| | - Marcin Kwit
- King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland.
| | - Luigi Cavallo
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 8, 61-614 Poznan, Poland
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000 Ghent, Belgium.
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9
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Guo SM, Huh S, Coehlo M, Shen L, Pieters G, Baudoin O. A C-H activation-based enantioselective synthesis of lower carbo[n]helicenes. Nat Chem 2023:10.1038/s41557-023-01174-5. [PMID: 37024717 DOI: 10.1038/s41557-023-01174-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 02/28/2023] [Indexed: 04/08/2023]
Abstract
The three-dimensional structure of carbohelicenes has fascinated generations of molecular chemists and has been exploited in a wide range of applications. Their strong circularly polarized luminescence has attracted considerable attention in recent years due to promising applications in new optical materials. Although the enantioselective synthesis of fused carbo- and heterohelicenes has been achieved, a direct catalytic enantioselective method allowing the synthesis of lower, non-fused carbo[n]helicenes (n = 4-6) is still lacking. We report here that Pd-catalysed enantioselective C-H arylation in the presence of a unique bifunctional phosphine-carboxylate ligand provides a simple and general access to these lower carbo[n]helicenes. Computational mechanistic studies indicate that both the C-H activation and reductive elimination steps contribute to the overall enantioselectivity. The observed enantio-induction seems to arise from a combination of non-covalent interactions and steric repulsion between the substrate and ligand during the two key reductive elimination steps. The photophysical and chiroptical properties of the synthesized scalemic [n]helicenes have been systematically studied.
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Affiliation(s)
- Shu-Min Guo
- Department of Chemistry, University of Basel, Basel, Switzerland
| | - Soohee Huh
- Department of Chemistry, University of Basel, Basel, Switzerland
| | - Max Coehlo
- Département Médicaments et Technologies pour la Santé (DMTS), SCBM, Université Paris-Saclay, CEA, INRAE, Gif-sur-Yvette, France
| | - Li Shen
- Department of Chemistry, University of Basel, Basel, Switzerland
| | - Grégory Pieters
- Département Médicaments et Technologies pour la Santé (DMTS), SCBM, Université Paris-Saclay, CEA, INRAE, Gif-sur-Yvette, France
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, Basel, Switzerland.
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10
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Miyakoshi T, Niggli NE, Baudoin O. Remote Construction of N-Heterocycles via 1,4-Palladium Shift-Mediated Double C-H Activation. Angew Chem Int Ed Engl 2022; 61:e202116101. [PMID: 35143094 PMCID: PMC9303548 DOI: 10.1002/anie.202116101] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Indexed: 12/14/2022]
Abstract
In the past years, Pd0‐catalyzed C(sp3)−H activation provided efficient and step‐economical methods to synthesize carbo‐ and heterocycles via direct C(sp2)−C(sp3) bond formation. We report herein that a 1,4‐Pd shift allows access to N‐heterocycles which are difficult to build via a direct reaction. It is shown that o‐bromo‐N‐methylanilines undergo a 1,4‐Pd shift at the N‐methyl group, followed by intramolecular trapping by C(sp2)−H or C(sp3)−H activation at another nitrogen substituent and remote C−C bond formation to generate biologically relevant isoindolines and β‐lactams. The product selectivity is influenced by the employed ligand, with NHCs favoring the product of remote C−C coupling against products arising from direct C−C coupling and N‐demethylation.
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Affiliation(s)
- Takeru Miyakoshi
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Nadja E Niggli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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11
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Ferlin F, Anastasiou I, Salameh N, Miyakoshi T, Baudoin O, Vaccaro L. C(sp 3 )-H Arylation Promoted by a Heterogeneous Palladium-N-Heterocyclic Carbene Complex in Batch and Continuous Flow. ChemSusChem 2022; 15:e202102736. [PMID: 35098689 PMCID: PMC9303704 DOI: 10.1002/cssc.202102736] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/24/2022] [Indexed: 06/14/2023]
Abstract
A heterogeneous reusable palladium(II)-bis(N-heterocyclic carbene) catalyst was prepared and shown to catalyze the intramolecular C(sp3 )-H activation/cyclization of N-alkyl-2-bromoanilines furnishing indolines. This new catalytic system was based on a bis-imidazolium ligand immobilized on a spaced cross-linked polystyrene support. The iodide ligands on the catalyst played a central role in the efficiency of the process occurring through a "release and catch" mechanism. The heterogeneous nature of the catalyst was further exploited in the design of a continuous-flow protocol that allowed a more efficient recovery and reuse of the catalyst, as well as a very fast and safe procedure.
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Affiliation(s)
- Francesco Ferlin
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Ioannis Anastasiou
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Nihad Salameh
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Takeru Miyakoshi
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Olivier Baudoin
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Luigi Vaccaro
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
- Peoples Friendship University of Russia (RUDN University)6 Miklukho-Maklaya StMoscow117198Russia
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12
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Miyakoshi T, Niggli NE, Baudoin O. Remote Construction of N‐Heterocycles via 1,4‐Palladium Shift‐Mediated Double C–H Activation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116101] [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: 11/11/2022]
Affiliation(s)
- Takeru Miyakoshi
- Universität Basel: Universitat Basel Departement Chemie SWITZERLAND
| | | | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel SWITZERLAND
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13
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Kudashev A, Baudoin O. Site-Selective Pd-Catalyzed C(sp 3 )-H Arylation of Heteroaromatic Ketones. Chemistry 2021; 27:17688-17694. [PMID: 34761844 PMCID: PMC9299137 DOI: 10.1002/chem.202103467] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Indexed: 11/27/2022]
Abstract
A ligand‐controlled site‐selective C(sp3)−H arylation of heteroaromatic ketones has been developed using Pd catalysis. The reaction occurred selectively at the α‐ or β‐position of the ketone side‐chain. The switch from α‐ to β‐arylation was realized by addition of a pyridone ligand. The α‐arylation process showed broad scope and high site‐ and chemoselectivity, whereas the β‐arylation was more limited. Mechanistic investigations suggested that α‐arylation occurs through C−H activation/oxidative addition/reductive elimination whereas β‐arylation involves desaturation and aryl insertion.
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Affiliation(s)
- Anton Kudashev
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Olivier Baudoin
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
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14
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Baudoin O. A Personal Account on Industrial Collaborations in the Field of C-H Activation. Chimia (Aarau) 2021; 75:967-971. [PMID: 34798919 DOI: 10.2533/chimia.2021.967] [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: 11/19/2022] Open
Abstract
In recent years, transition-metal-catalyzed C-H functionalization has emerged as a potentially greener alternative to classic cross-couplings and as a powerful tool to access complex functional molecules with improved step-economy. This short account relates our experience of industrial collaborations in C(sp³)-H bond activation, which were key to the development of this topic in our group. The synthesis of the antianginal drug Ivabradine led us to develop a general approach to benzocyclobutenes, which were further employed in peri cyclic reactions. A follow-up study led us to discover a new method to construct arylcyclopropanes via double C-H activation and the coupling of two alkyl groups. Finally, targeting the herbicide Indaziflam contributed to develop C(sp³)-H activation as a powerful tool to access a variety of relevant indane motifs. We hope that these successful stories will help to stimulate further fruitful Industry-Academia collaborations in the field of synthetic chemistry.
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Affiliation(s)
- Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland;,
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15
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Antien K, Geraci A, Parmentier M, Baudoin O. A New Dioxazolone for the Synthesis of 1,2-Aminoalcohols via Iridium(III)-Catalyzed C(sp 3 )-H Amidation. Angew Chem Int Ed Engl 2021; 60:22948-22955. [PMID: 34427390 PMCID: PMC8519009 DOI: 10.1002/anie.202110019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 12/14/2022]
Abstract
Vicinal aminoalcohols are widespread structural motifs in bioactive molecules. We report the development of a new dioxazolone reagent containing a p‐nitrophenyldifluoromethyl group, which 1. displays a good safety profile; 2. shows a remarkably high reactivity in the oxime‐directed iridium(III)‐catalyzed amidation of unactivated C(sp3)−H bonds; 3. leads to amide products which can be hydrolyzed under mild conditions. The amidation reaction is mild, general and compatible with both primary C−H bonds of tertiary and secondary alcohols, as well as secondary C−H bonds of cyclic secondary alcohols. This method provides an easy access to free 1,2‐aminoalcohols after efficient and mild cleavage of the oxime directing group and activated amide.
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Affiliation(s)
- Kevin Antien
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Andrea Geraci
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Michael Parmentier
- Novartis Pharma AG, Chemical & Analytical Development, 4056, Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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16
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Rahil M, Marc J, Legrand E, Deprele C, Baudoin O, Delay A. Ponctions biopsies rénales scannoguidées par les néphrologues : expérience du service de néphrologie de l’hôpital d’Annonay en Ardèche : à propos de 123 patients. Nephrol Ther 2021. [DOI: 10.1016/j.nephro.2021.07.235] [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: 10/20/2022]
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17
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Guo S, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2021. [DOI: 10.2533/chimia.2021.208] [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: 11/19/2022] Open
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18
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Melot R, Zuccarello M, Cavalli D, Niggli N, Devereux M, Bürgi T, Baudoin O. Palladium(0)‐Catalyzed Enantioselective Intramolecular Arylation of Enantiotopic Secondary C−H Bonds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014605] [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: 01/17/2023]
Affiliation(s)
- Romain Melot
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Marco Zuccarello
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Diana Cavalli
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Nadja Niggli
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Michael Devereux
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Thomas Bürgi
- University of Geneva Department of Physical Chemistry 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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19
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Melot R, Zuccarello M, Cavalli D, Niggli N, Devereux M, Bürgi T, Baudoin O. Palladium(0)-Catalyzed Enantioselective Intramolecular Arylation of Enantiotopic Secondary C-H Bonds. Angew Chem Int Ed Engl 2021; 60:7245-7250. [PMID: 33325596 DOI: 10.1002/anie.202014605] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 11/01/2020] [Revised: 12/14/2020] [Indexed: 11/10/2022]
Abstract
The enantioselective functionalization of nonactivated enantiotopic secondary C-H bonds is one of the greatest challenges in transition-metal-catalyzed C-H activation proceeding by an inner-sphere mechanism. Such reactions have remained elusive within the realm of Pd0 catalysis. Reported here is the unique reactivity profile of the IBiox ligand family in the Pd0 -catalyzed intramolecular arylation of such nonactivated secondary C-H bonds. Chiral C2 -symmetric IBiox ligands led to high enantioselectivities for a broad range of valuable indane products containing a tertiary stereocenter, as well as the arylation of secondary C-H bonds adjacent to amides. Depending on the amide substituents and upon control of reaction time, indanes containing labile tertiary stereocenters were also obtained with high enantioselectivities. Analysis of the steric maps of the IBiox ligands indicated that the level of enantioselectivity correlates with the difference between the two most occupied and the two less occupied space quadrants, and provided a blueprint for the design of even more efficient ligands.
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Affiliation(s)
- Romain Melot
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Diana Cavalli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Nadja Niggli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Michael Devereux
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Thomas Bürgi
- University of Geneva, Department of Physical Chemistry, 30 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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20
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Savary D, Baudoin O. Enantioselective Pd
0
‐Catalyzed C(sp
2
)–H Arylation for the Synthesis of Chiral Warped Molecules. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013303] [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: 11/08/2022]
Affiliation(s)
- David Savary
- Department of Chemistry University of Basel St. Johanns-Ring 19 4056 Basel Switzerland
| | - Olivier Baudoin
- Department of Chemistry University of Basel St. Johanns-Ring 19 4056 Basel Switzerland
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21
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Savary D, Baudoin O. Enantioselective Pd 0 -Catalyzed C(sp 2 )-H Arylation for the Synthesis of Chiral Warped Molecules. Angew Chem Int Ed Engl 2021; 60:5136-5140. [PMID: 33245173 DOI: 10.1002/anie.202013303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 10/01/2020] [Revised: 11/17/2020] [Indexed: 01/01/2023]
Abstract
C-H activation-based ring-forming methods are a powerful approach for the construction of complex molecular architectures, especially those containing a congested stereocenter. Therefore, this strategy seems perfectly suited to address the synthesis of chiral polycyclic aromatic hydrocarbons (PAHs) and bowl-shaped molecules, which are important target molecules in the field of organic electronic materials. Herein, we describe an enantioselective Pd0 -catalyzed C(sp2 )-H arylation protocol for the synthesis of chiral fluoradenes and other warped molecules, which could serve to the bottom-up construction of chiral PAHs. The current approach relies on the use of chiral bifunctional phosphine-carboxylate ligands and delivers diverse polycyclic compounds in high yield and with good to excellent enantioselectivity. The chiroptical properties of the obtained products were investigated, and some of them were found to have a strong ellipticity and an emission band located in the visible region.
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Affiliation(s)
- David Savary
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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22
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2021. [DOI: 10.2533/chimia.2021.101] [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
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23
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Affiliation(s)
- Nadja E. Niggli
- Department of Chemistry University of Basel St. Johanns-Ring 19 CH-4056 Basel Switzerland
| | - Olivier Baudoin
- Department of Chemistry University of Basel St. Johanns-Ring 19 CH-4056 Basel Switzerland
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24
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Vyhivskyi O, Kudashev A, Miyakoshi T, Baudoin O. Chiral Catalysts for Pd 0 -Catalyzed Enantioselective C-H Activation. Chemistry 2021; 27:1231-1257. [PMID: 32767709 DOI: 10.1002/chem.202003225] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [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: 07/08/2020] [Revised: 08/04/2020] [Indexed: 12/13/2022]
Abstract
In the past few decades, processes that involve transition-metal catalysis have represented a major part of the synthetic chemist's toolbox. Recently, the interest has shifted from the well-established cross-coupling reactions to C-H bond functionalization, thus making it a current frontier of transition-metal-catalyzed reactions. Constant progress in this field has led to the discovery of enantioselective methods to generate and control various types of stereogenic elements, thereby demonstrating its high value to generate scalemic chiral molecules. The present review is dedicated to enantioselective Pd0 -catalyzed C-H activation, which may be considered as an evolution of Pd0 -catalyzed cross-couplings, with a focus on the different chiral ligands and catalysts that enable these transformations.
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Affiliation(s)
- Oleksandr Vyhivskyi
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Anton Kudashev
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Takeru Miyakoshi
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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25
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.1019] [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: 11/19/2022] Open
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26
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Thesmar P, Coomar S, Prescimone A, Häussinger D, Gillingham D, Baudoin O. Divergent Synthesis of Bioactive Dithiodiketopiperazine Natural Products Based on a Double C(sp 3 )-H Activation Strategy. Chemistry 2020; 26:15298-15312. [PMID: 32852800 DOI: 10.1002/chem.202003683] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 08/07/2020] [Revised: 08/26/2020] [Indexed: 12/28/2022]
Abstract
This article provides a detailed report of our efforts to synthesize the dithiodiketopiperazine (DTP) natural products (-)-epicoccin G and (-)-rostratin A using a double C(sp3 )-H activation strategy. The strategy's viability was first established on a model system lacking the C8/C8' alcohols. Then, an efficient stereoselective route including an organocatalytic epoxidation was secured to access a key bis-triflate substrate. This bis-triflate served as the functional handles for the key transformation of the synthesis: a double C(sp3 )-H activation. The successful double activation opened access to a common intermediate for both natural products in high overall yield and on a multigram scale. After several unsuccessful attempts, this intermediate was efficiently converted to (-)-epicoccin G and to the more challenging (-)-rostratin A via suitable oxidation/reduction and protecting group sequences, and via a final sulfuration that occurred in good yield and high diastereoselectivity. These efforts culminated in the synthesis of (-)-epicoccin G and (-)-rostratin A in high overall yields (19.6 % over 14 steps and 12.7 % over 17 steps, respectively), with the latter being obtained on a 500 mg scale. Toxicity assessments of these natural products and several analogues (including the newly synthesized epicoccin K) in the leukemia cell line K562 confirmed the importance of the disulfide bridge for activity and identified dianhydrorostratin A as a 20x more potent analogue.
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Affiliation(s)
- Pierre Thesmar
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Seemon Coomar
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Alessandro Prescimone
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Daniel Häussinger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Dennis Gillingham
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056, Basel, Switzerland
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27
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.904] [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: 11/19/2022] Open
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28
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.818] [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: 11/19/2022] Open
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29
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.731] [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: 11/19/2022] Open
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30
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Čarný T, Rocaboy R, Clemenceau A, Baudoin O. Synthesis of Amides and Esters by Palladium(0)‐Catalyzed Carbonylative C(sp
3
)−H Activation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007922] [Citation(s) in RCA: 4] [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: 01/06/2023]
Affiliation(s)
- Tomáš Čarný
- Slovak University of Technology Department of Organic Chemistry Radlinského 9 81237 Bratislava Slovakia
| | - Ronan Rocaboy
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Antonin Clemenceau
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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31
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Čarný T, Rocaboy R, Clemenceau A, Baudoin O. Synthesis of Amides and Esters by Palladium(0)‐Catalyzed Carbonylative C(sp
3
)−H Activation. Angew Chem Int Ed Engl 2020; 59:18980-18984. [DOI: 10.1002/anie.202007922] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/08/2020] [Indexed: 01/02/2023]
Affiliation(s)
- Tomáš Čarný
- Slovak University of Technology Department of Organic Chemistry Radlinského 9 81237 Bratislava Slovakia
| | - Ronan Rocaboy
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Antonin Clemenceau
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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32
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Affiliation(s)
- Yann Baumgartner
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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33
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Clemenceau A, Thesmar P, Gicquel M, Le Flohic A, Baudoin O. Direct Synthesis of Cyclopropanes from gem-Dialkyl Groups through Double C–H Activation. J Am Chem Soc 2020; 142:15355-15361. [DOI: 10.1021/jacs.0c05887] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Antonin Clemenceau
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Pierre Thesmar
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Maxime Gicquel
- Oril Industrie, 13 rue Auguste Desgenétais, CS60125, 76210 Bolbec, France
| | | | - Olivier Baudoin
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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34
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Affiliation(s)
- Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 CH-4056 Basel Schweiz
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35
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Abstract
In the past decade, multiple catalytic C-H bond functionalization has been successfully applied in natural product synthesis as a strategy to reduce the number of steps, increase overall yield and employ more easily available starting materials. This minireview presents selected examples making use of multiple C-H bond functionalization in conceptually different ways. First, linear syntheses are discussed, wherein multiple C-H functionalization is employed either from simple (hetero)cyclic cores, at a late stage, or to build polycyclic systems. Second, the use of multiple C-H functionalization as a strategic tool in convergent synthesis to access and couple complex fragments is discussed. Information on the scalability of the employed methods is provided when available. The presented cases indicate that multiple C-H functionalization strategies should play a great role to shape the future synthesis of functional complex molecules with improved sustainability.
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Affiliation(s)
- Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
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36
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.504] [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: 11/19/2022] Open
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37
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.418] [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: 11/19/2022] Open
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38
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Guo SM, Kudashev A, Miyakoshi T, Zuccarello M, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.298] [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: 11/19/2022] Open
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39
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.192] [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: 11/19/2022] Open
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40
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2020. [DOI: 10.2533/chimia.2020.57] [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: 11/19/2022] Open
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41
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Nguyen QH, Guo SM, Royal T, Baudoin O, Cramer N. Intermolecular Palladium(0)-Catalyzed Atropo-enantioselective C–H Arylation of Heteroarenes. J Am Chem Soc 2020; 142:2161-2167. [DOI: 10.1021/jacs.9b12299] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qui-Hien Nguyen
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Shu-Min Guo
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Titouan Royal
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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42
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2019. [DOI: 10.2533/chimia.2019.1032] [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: 11/19/2022] Open
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43
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2019. [DOI: 10.2533/chimia.2019.943] [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: 11/19/2022] Open
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44
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2019. [DOI: 10.2533/chimia.2019.835] [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: 11/19/2022] Open
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45
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Thesmar P, Baudoin O. Efficient and Divergent Total Synthesis of (-)-Epicoccin G and (-)-Rostratin A Enabled by Double C(sp 3)-H Activation. J Am Chem Soc 2019; 141:15779-15783. [PMID: 31556609 DOI: 10.1021/jacs.9b09359] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dithiodiketopiperazines are complex polycyclic natural products possessing a variety of interesting biological activities. Despite their interest, relatively few total syntheses have been completed. We herein report the enantioselective, scalable, and divergent total synthesis of two symmetrical pentacyclic dithiodiketopiperazines, (-)-epicoccin G and (-)-rostratin A. A common intermediate was synthesized on a multigram scale from inexpensive, commercially available starting materials using an enantioselective organocatalytic epoxidation and a double C(sp3)-H activation as key steps, with the latter allowing the efficient simultaneous construction of the two five-membered rings. In addition to the cis,cis-fused target (-)-epiccocin G, the more challenging (-)-rostratin A, possessing two trans ring junctions, was obtained for the first time on a 500 mg scale through the optimization of each step and validation on multigram quantities. Both natural products were synthesized with high overall yields (13-20%). This study should facilitate access to this fascinating and yet understudied family of biologically active natural products.
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Affiliation(s)
- Pierre Thesmar
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , CH-4056 Basel , Switzerland
| | - Olivier Baudoin
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , CH-4056 Basel , Switzerland
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2019. [DOI: 10.2533/chimia.2019.758] [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: 11/19/2022] Open
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47
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Lin W, Zhang KF, Baudoin O. Regiodivergent enantioselective C-H functionalization of Boc-1,3-oxazinanes and application to the synthesis of β 2 and β 3-amino acids. Nat Catal 2019; 2:882-888. [PMID: 31620675 PMCID: PMC6795538 DOI: 10.1038/s41929-019-0336-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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] [Indexed: 12/14/2022]
Abstract
β2- and β3-Amino acids are important
chiral building blocks for the design of new pharmaceuticals and
peptidomimetics. Here we report a straightforward regio- and enantiodivergent
access to these compounds using a one-pot reaction composed of
sparteine-mediated enantioselective lithiation of a Boc-1,3-oxazinane,
transmetallation to zinc and direct or migratory Negishi coupling with an
organic electrophile. The regioselectivity of the Negishi coupling was highly
ligand-controlled and switchable to obtain the C4- or the C5-functionalized
product exclusively. High enantioselectivities were achieved on a broad range of
examples, and a catalytic version in chiral diamine was developed using the
(+)-sparteine surrogate. Selected C4- and C5-functionalized Boc-1,3-oxazinanes
were subsequently converted to highly enantio-enriched β2- and
β3-amino acids with the (R) or
(S) configuration, depending on the sparteine enantiomer
employed in the lithiation step.
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Affiliation(s)
- Weilong Lin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Ke-Feng Zhang
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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Rocaboy R, Anastasiou I, Baudoin O. Redox‐Neutral Coupling between Two C(sp
3
)−H Bonds Enabled by 1,4‐Palladium Shift for the Synthesis of Fused Heterocycles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908460] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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)
- Ronan Rocaboy
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Ioannis Anastasiou
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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49
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Rocaboy R, Anastasiou I, Baudoin O. Redox‐Neutral Coupling between Two C(sp
3
)−H Bonds Enabled by 1,4‐Palladium Shift for the Synthesis of Fused Heterocycles. Angew Chem Int Ed Engl 2019; 58:14625-14628. [DOI: 10.1002/anie.201908460] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Indexed: 02/03/2023]
Affiliation(s)
- Ronan Rocaboy
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Ioannis Anastasiou
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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Baumgartner Y, Niggli N, Savary D, Thesmar P, Baudoin O. Swiss Science Concentrates. Chimia (Aarau) 2019. [DOI: 10.2533/chimia.2019.634] [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: 11/19/2022] Open
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