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Pereira R, Pfeifer L, Fournier J, Gouverneur V, Cvengroš J. Twisting the ethano-Tröger's base: the bisamide. Org Biomol Chem 2018; 15:628-633. [PMID: 27966723 DOI: 10.1039/c6ob02359b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The typically planar amide when incorporated into bicyclic systems can undergo a significant distortion from planarity resulting in physical properties and reactivity that deviate from classical amide behaviour. Herein, we report a succinct protocol that utilises potassium permanganate to selectively α-oxygenate the benzylic position of ethano-Tröger's base derivatives to yield a new class of twisted bisamides. Additionally, we report the first synthesis of an ethano-Tröger's base derivative bearing substituents in the positions ortho to the nitrogen atoms.
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Affiliation(s)
- Raul Pereira
- Department of Chemistry, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, UK. and Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg-2, 8093 Zürich, Switzerland.
| | - Lukas Pfeifer
- Department of Chemistry, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, UK.
| | - Jean Fournier
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg-2, 8093 Zürich, Switzerland.
| | - Véronique Gouverneur
- Department of Chemistry, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, UK.
| | - Ján Cvengroš
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg-2, 8093 Zürich, Switzerland.
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Jarzebski A, Tenten C, Bannwarth C, Schnakenburg G, Grimme S, Lützen A. Diastereoselective Self-Assembly of a Neutral Dinuclear Double-Stranded Zinc(II) Helicate via Narcissistic Self-Sorting. Chemistry 2017. [PMID: 28650081 DOI: 10.1002/chem.201702125] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A new bis(salicylimine) ligand based on the Tröger's base scaffold was synthesized in racemic and enantiomerically pure form. Upon coordination to zinc(II) ions this ligand undergoes highly diastereoselective self-assembly into neutral dinuclear double-stranded helicates as proven by XRD analysis and via comparison of experimental ECD spectra with those simulated with quantum-chemical methods. When the racemic ligand was used, self-assembly occurs under narcissistic self-sorting resulting in the formation of a racemic pair of helicates as revealed by NMR spectroscopy and XRD analysis.
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Affiliation(s)
- Andreas Jarzebski
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
| | - Christina Tenten
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
| | - Christoph Bannwarth
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115, Bonn, Germany
| | - Gregor Schnakenburg
- Institut für Anorganische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstr. 4, 53115, Bonn, Germany
| | - Arne Lützen
- Kekulé-Institut für Organische Chemie und Biochemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Gerhard-Domagk-Str. 1, 53121, Bonn, Germany
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Pereira R, Ondrisek P, Kubincová A, Otth E, Cvengroš J. Mild Stereoselective Intermolecular Acetoxylation and Azidation of α-C−H Bonds in Tröger's Bases. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600415] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Raul Pereira
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg-2 Zürich Switzerland
| | - Pavol Ondrisek
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg-2 Zürich Switzerland
| | - Alžbeta Kubincová
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg-2 Zürich Switzerland
| | - Elisabeth Otth
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg-2 Zürich Switzerland
| | - Ján Cvengroš
- Department of Chemistry and Applied Biosciences; ETH Zürich; Vladimir-Prelog-Weg-2 Zürich Switzerland
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Kohrt S, Santschi N, Cvengroš J. Accessing N-Stereogenicity through a Double Aza-Michael Reaction: Mechanistic Insights. Chemistry 2016; 22:390-403. [PMID: 26767587 DOI: 10.1002/chem.201502670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 11/10/2022]
Abstract
Further development of the chemistry and applications of chiral compounds that possess configurationally stable stereogenic nitrogen atoms is hampered by the lack of efficient strategies to access such compounds in an enantiomerically pure form. Esters of propiolic acid and chiral alcohols were evaluated as cheap and readily available Michael acceptors in a diastereoselective synthesis of N-stereogenic compounds by means of a double aza-Michael conjugate addition. Diastereomeric ratios of up to 74:26 and high yields were achieved with (-)-menthyl propiolate as a substrate. Furthermore, a detailed mechanistic investigation was undertaken to shed some light on the course of this domino transformation. Kinetic studies revealed that the protic-solvent additive acts as a Brønsted acid and activates the ester toward the initial attack of the tetrahydrodiazocine partner. Conversely, acidic conditions proved unfavorable during the final cyclization step that provides the product.
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Affiliation(s)
- Sonja Kohrt
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster (Germany)
| | - Nico Santschi
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).,Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster (Germany)
| | - Ján Cvengroš
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich (Switzerland).
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Pereira R, Otth E, Cvengroš J. Chemo- and Stereoselective NBS-Promoted Intermolecular Oxygenation and Nitrogenation of α-C-H Bonds of Tertiary Diamines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Lobana TS. Activation of C–H bonds of thiosemicarbazones by transition metals: synthesis, structures and importance of cyclometallated compounds. RSC Adv 2015. [DOI: 10.1039/c5ra03333k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Transition metals (PdII, PtII, RuII, RhIIIand IrIII) have induced activation of C–H bonds of thiosemicarbazones and yielded mono-, di-, tri- and tetra-nuclear complexes.
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Affiliation(s)
- Tarlok S. Lobana
- Department of Chemistry
- Center of Advanced Studies
- Guru Nanak Dev University
- Amritsar 143005
- India
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Ondrisek P, Schwenk R, Cvengroš J. Synthesis of enantiomerically pure Tröger's base derivatives via chiral disulfoxides. Chem Commun (Camb) 2014; 50:9168-71. [DOI: 10.1039/c4cc03963g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Havlík M, Dolenský B, Jakubek M, Král V. Synthesis of Unsymmetrical Tröger's Bases Bearing Groups Sensitive to Reduction. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kamiyama T, Özer MS, Otth E, Deska J, Cvengroš J. Modular Synthesis of Optically Active Tröger's Base Analogues. Chempluschem 2013; 78:1510-1516. [PMID: 31986657 DOI: 10.1002/cplu.201300295] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Indexed: 11/10/2022]
Abstract
For the first time, enantioselective catalysis was applied for the preparation of Tröger's base derivatives affording N-stereogenic building blocks not only in excellent enantiomeric purity but also in an easily scalable fashion. Enzymatic kinetic resolution proved efficient to yield functionalized Tröger's bases, which can be subsequently modified by various chemical methods without any erosion of stereogenic information. In concert with a preparatively convenient protocol for the synthesis of the racemic substrates from commercially available anilines, a highly practicable and flexible route towards a wide range of enantiopure Tröger's base analogues is provided.
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Affiliation(s)
- Takuya Kamiyama
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zurich, HCI H230, Wolfgang-Pauli-Strasse 10, 8093 Zürich (Switzerland), Fax: (+41) 44-6321310
| | - Merve Sinem Özer
- Department für Chemie, Universität zu Köln, Greinstrasse 4, 50939 Cologne (Germany), Fax: (+49) 221-4705102
| | - Elisabeth Otth
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zurich, HCI H230, Wolfgang-Pauli-Strasse 10, 8093 Zürich (Switzerland), Fax: (+41) 44-6321310
| | - Jan Deska
- Department für Chemie, Universität zu Köln, Greinstrasse 4, 50939 Cologne (Germany), Fax: (+49) 221-4705102
| | - Ján Cvengroš
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zurich, HCI H230, Wolfgang-Pauli-Strasse 10, 8093 Zürich (Switzerland), Fax: (+41) 44-6321310
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Pujari SA, Guénée L, Lacour J. Efficient Synthesis of Imino-methano Tröger Bases by Nitrene Insertions into C–N Bonds. Org Lett 2013; 15:3930-3. [DOI: 10.1021/ol4016892] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sandip A. Pujari
- University of Geneva, Department of Organic Chemistry, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland, and Laboratory of Crystallography, University of Geneva, quai Ernest Ansermet 24, CH-1211 Genève 4, Switzerland
| | - Laure Guénée
- University of Geneva, Department of Organic Chemistry, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland, and Laboratory of Crystallography, University of Geneva, quai Ernest Ansermet 24, CH-1211 Genève 4, Switzerland
| | - Jérôme Lacour
- University of Geneva, Department of Organic Chemistry, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland, and Laboratory of Crystallography, University of Geneva, quai Ernest Ansermet 24, CH-1211 Genève 4, Switzerland
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Pereira R, Cvengroš J. Tröger's Base Derived Phosphanes for Suzuki-Miyaura and Buchwald-Hartwig Cross-Coupling Reactions. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300519] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Dutta J, Bhattacharya S. Controlled interaction of benzaldehyde thiosemicarbazones with palladium: formation of bis-complexes with cis-geometry and organopalladium complexes, and their catalytic application in C–C and C–N coupling. RSC Adv 2013. [DOI: 10.1039/c3ra40829a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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