1
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Peng Y, Oestreich M. B(C 6 F 5 ) 3 -Catalyzed Regioselective Ring Opening of Cyclic Amines with Hydrosilanes. Chemistry 2023; 29:e202203721. [PMID: 36448647 DOI: 10.1002/chem.202203721] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/02/2022]
Abstract
Opening the ring of cyclic amines by regioselective fission of one of the carbon-nitrogen bonds greatly expands the repertoire of available nitrogen-containing skeletons. Unlike approaches starting from cyclic tertiary amines, methods that can directly open secondary amines are still scarce. The present work discloses an efficient reductive ring opening of either of these cyclic amines using PhSiH3 under B(C6 F5 )3 catalysis. By this, the direct transformation of unstrained cyclic amines into the corresponding acyclic amines is achieved in a simple one-pot operation. A stepwise mechanism proceeding through the intermediacy of silylammonium ions followed by reductive cleavage of a carbon-nitrogen bond was experimentally verified.
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Affiliation(s)
- Yi Peng
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
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2
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Xie K, Oestreich M. Decarbonylative Transfer Hydrochlorination of Alkenes and Alkynes Based on a B(C
6
F
5
)
3
‐Initiated Grob Fragmentation. Angew Chem Int Ed Engl 2022; 61:e202203692. [PMID: 35325506 PMCID: PMC9321001 DOI: 10.1002/anie.202203692] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/23/2022]
Abstract
Readily available cyclohexa‐2,5‐dien‐1‐ylcarbonyl chloride derivatives are introduced as bench‐stable HCl surrogates for transfer hydrochlorination of terminal and internal alkenes as well as selected alkynes. The stepwise Grob fragmentation of those acyl chlorides into chloride, carbon monoxide, a low‐molecular‐weight arene, and a proton is promoted by B(C6F5)3. This decarbonylative transfer process enables the addition of HCl across C−C double and triple bonds with Markovnikov selectivity at room temperature.
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Affiliation(s)
- Kaixue Xie
- Institut für Chemie Technische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
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3
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Xie K, Oestreich M. Decarbonylative Transfer Hydrochlorination of Alkenes and Alkynes Based on a B(C6F5)3‐Initiated Grob Fragmentation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kaixue Xie
- Technische Universität Berlin: Technische Universitat Berlin Institute of Chemistry GERMANY
| | - Martin Oestreich
- Technische Universität Berlin: Technische Universitat Berlin Chemistry Straße des 17. Juni 115 10623 Berlin GERMANY
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4
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Zhang S, Xu H, He J, Zhang Y. Application of Mutualism in Organic Synthetic Chemistry: Mutually Promoted C−H Functionalization of Indole and Reduction of Quinoline. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sutao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry Jilin University Changchun Jilin 130012 People's Republic of China
| | - Hai Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry Jilin University Changchun Jilin 130012 People's Republic of China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry Jilin University Changchun Jilin 130012 People's Republic of China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry Jilin University Changchun Jilin 130012 People's Republic of China
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5
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Li L, Kail S, Weber SM, Hilt G. Indium‐katalysierte Transferhydrierung zur reduktiven Cyclisierung von 2‐Alkinylenonen zu trisubstituierten Furanen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Luomo Li
- Institut für Chemie Carl von Ossietzky Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
| | - Sascha Kail
- Institut für Chemie Carl von Ossietzky Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
| | - Sebastian M. Weber
- Institut für Chemie Carl von Ossietzky Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
| | - Gerhard Hilt
- Institut für Chemie Carl von Ossietzky Universität Oldenburg Carl-von-Ossietzky-Straße 9–11 26111 Oldenburg Deutschland
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6
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Li L, Kail S, Weber SM, Hilt G. Indium-Catalysed Transfer Hydrogenation for the Reductive Cyclisation of 2-Alkynyl Enones towards Trisubstituted Furans. Angew Chem Int Ed Engl 2021; 60:23661-23666. [PMID: 34476880 PMCID: PMC8597135 DOI: 10.1002/anie.202109266] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/23/2021] [Indexed: 01/04/2023]
Abstract
Indium tribromide catalysed the transfer hydrogenation from dihydroaromatic compounds, such as the commercially available γ-terpinene, to enones, which resulted in the cyclisation to trisubstituted furan derivatives. The reaction was initiated by a Michael addition of a hydride nucleophile to the enone subunit followed by a Lewis-acid-assisted cyclisation and the formation of a furan-indium intermediate and a Wheland intermediate derived from the dihydroaromatic starting material. The product was formed by protonation from the Wheland complex and replaced the indium tribromide substituent. In addition, a site-specific deuterium labelling of the dihydroaromatic HD surrogates resulted in site specific labelling of the products and gave useful insights into the reaction mechanism by H-D scrambling.
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Affiliation(s)
- Luomo Li
- Institut für ChemieCarl von Ossietzky Universität OldenburgCarl-von-Ossietzky-Strasse 9–1126111OldenburgGermany
| | - Sascha Kail
- Institut für ChemieCarl von Ossietzky Universität OldenburgCarl-von-Ossietzky-Strasse 9–1126111OldenburgGermany
| | - Sebastian M. Weber
- Institut für ChemieCarl von Ossietzky Universität OldenburgCarl-von-Ossietzky-Strasse 9–1126111OldenburgGermany
| | - Gerhard Hilt
- Institut für ChemieCarl von Ossietzky Universität OldenburgCarl-von-Ossietzky-Strasse 9–1126111OldenburgGermany
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7
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Li L, Hilt G. Indium Tribromide-Catalysed Transfer-Hydrogenation: Expanding the Scope of the Hydrogenation and of the Regiodivergent DH or HD Addition to Alkenes. Chemistry 2021; 27:11221-11225. [PMID: 34048092 PMCID: PMC8453857 DOI: 10.1002/chem.202101259] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 01/09/2023]
Abstract
The transfer‐hydrogenation as well as the regioselective and regiodivergent addition of H−D from regiospecific deuterated dihydroaromatic compounds to a variety of 1,1‐di‐ and trisubstituted alkenes was realised with InBr3 in dichloro(m)ethane. In comparison with the previously reported BF3⋅Et2O‐catalysed process, electron‐deficient aryl‐substituents can be applied reliably and thereby several restrictions could be lifted, and new types of substrates could be transformed successfully in hydrodeuterogenation as well as deuterohydrogenation transfer‐hydrogenation reactions.
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Affiliation(s)
- Luomo Li
- Institut für Chemie, Oldenburg University, Carl-von-Ossietzky-Str. 9-11, 26111, Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Oldenburg University, Carl-von-Ossietzky-Str. 9-11, 26111, Oldenburg, Germany
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8
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Adet N, Specklin D, Gourlaouen C, Damiens T, Jacques B, Wehmschulte RJ, Dagorne S. Towards Naked Zinc(II) in the Condensed Phase: A Highly Lewis Acidic Zn
II
Dication Stabilized by Weakly Coordinating Carborate Anions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012287] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nicolas Adet
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - David Specklin
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Christophe Gourlaouen
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Thibault Damiens
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Béatrice Jacques
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Rudolf J. Wehmschulte
- Chemistry Program Florida Institute of Technology 150 West University Boulevard Melbourne FL 32901-6975 USA
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
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9
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Adet N, Specklin D, Gourlaouen C, Damiens T, Jacques B, Wehmschulte RJ, Dagorne S. Towards Naked Zinc(II) in the Condensed Phase: A Highly Lewis Acidic Zn II Dication Stabilized by Weakly Coordinating Carborate Anions. Angew Chem Int Ed Engl 2021; 60:2084-2088. [PMID: 33037702 DOI: 10.1002/anie.202012287] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Indexed: 11/08/2022]
Abstract
The employment of the hexyl-substituted anion [HexCB11 Cl11 ]- allowed the synthesis of a ZnII species, Zn[HexCB11 Cl11 ]2 , 3, in which the Zn2+ cation is only weakly coordinated to two carborate counterions and that is soluble in low polarity organic solvents such as bromobenzene. DOSY NMR studies show the facile displacement of at least one of the counterions, and this near nakedness of the cation results in high catalytic activity in the hydrosilylation of 1-hexene and 1-methyl-1cyclohexene. Fluoride ion affinity (FIA) calculations reveal a solution Lewis acidity of 3 (FIA=262.1 kJ mol-1 ) that is higher than that of the landmark Lewis acid B(C6 F5 )3 (FIA=220.5 kJ mol-1 ). This high Lewis acidity leads to a high activity in catalytic CO2 and Ph2 CO reduction by Et3 SiH and hydrogenation of 1,1-diphenylethylene using 1,4-cyclohexadiene as the hydrogen source. Compound 3 was characterized by multinuclear NMR spectroscopy, mass spectrometry, single crystal X-ray diffraction, and DFT studies.
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Affiliation(s)
- Nicolas Adet
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
| | - David Specklin
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
| | - Christophe Gourlaouen
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
| | - Thibault Damiens
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
| | - Béatrice Jacques
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
| | - Rudolf J Wehmschulte
- Chemistry Program, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL, 32901-6975, USA
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg, CNRS-Université de Strasbourg, 1 rue Blaise Pascal, 67000, Strasbourg, France
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10
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Tian J, Chen Y, Vayer M, Djurovic A, Guillot R, Guermazi R, Dagorne S, Bour C, Gandon V. Exploring the Limits of π‐Acid Catalysis Using Strongly Electrophilic Main Group Metal Complexes: The Case of Zinc and Aluminium. Chemistry 2020; 26:12831-12838. [DOI: 10.1002/chem.202001376] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/09/2020] [Indexed: 01/30/2023]
Affiliation(s)
- Jiaxin Tian
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Yan Chen
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Marie Vayer
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Alexandre Djurovic
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Refka Guermazi
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Samuel Dagorne
- Institut de Chimie de Strasbourg CNRS-Université de Strasbourg 1 rue Blaise Pascal 67000 Strasbourg France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182 Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168 Ecole Polytechnique, Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
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11
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Fang H, Oestreich M. Reduktive Desaminierung mit Hydrosilanen katalysiert durch B(C
6
F
5
)
3. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Huaquan Fang
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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12
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Fang H, Oestreich M. Reductive Deamination with Hydrosilanes Catalyzed by B(C 6 F 5 ) 3. Angew Chem Int Ed Engl 2020; 59:11394-11398. [PMID: 32311213 PMCID: PMC7384015 DOI: 10.1002/anie.202004651] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/19/2020] [Indexed: 11/29/2022]
Abstract
The strong boron Lewis acid tris(pentafluorophenyl)borane B(C6 F5 )3 is known to catalyze the dehydrogenative coupling of certain amines and hydrosilanes at elevated temperatures. At higher temperature, the dehydrogenation pathway competes with cleavage of the C-N bond and defunctionalization is obtained. This can be turned into a useful methodology for the transition-metal-free reductive deamination of a broad range of amines as well as heterocumulenes such as an isocyanate and an isothiocyanate.
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Affiliation(s)
- Huaquan Fang
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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13
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Walker JCL, Oestreich M. Lewis Acid Catalyzed Transfer Hydromethallylation for the Construction of Quaternary Carbon Centers. Angew Chem Int Ed Engl 2019; 58:15386-15389. [PMID: 31449730 PMCID: PMC6856816 DOI: 10.1002/anie.201909852] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Indexed: 12/18/2022]
Abstract
The design and gram-scale synthesis of a cyclohexa-1,4-diene-based surrogate of isobutene gas is reported. Using the highly electron-deficient Lewis acid B(C6 F5 )3 , application of this surrogate in the hydromethallylation of electron-rich styrene derivatives provided sterically congested quaternary carbon centers. The reaction proceeds by C(sp3 )-C(sp3 ) bond formation at a tertiary carbenium ion that is generated by alkene protonation. The possibility of two concurrent mechanisms is proposed on the basis of mechanistic experiments using a deuterated surrogate.
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Affiliation(s)
- Johannes C. L. Walker
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
| | - Martin Oestreich
- Institut für ChemieTechnische Universität BerlinStrasse des 17. Juni 11510623BerlinGermany
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14
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Walker JCL, Oestreich M. Lewis Säure‐katalysierte Transferhydromethallylierung für den Aufbau quartärer Kohlenstoffzentren. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Johannes C. L. Walker
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
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15
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Orecchia P, Yuan W, Oestreich M. Transfer Hydrocyanation of α- and α,β-Substituted Styrenes Catalyzed by Boron Lewis Acids. Angew Chem Int Ed Engl 2019; 58:3579-3583. [DOI: 10.1002/anie.201813853] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/27/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Patrizio Orecchia
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Weiming Yuan
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
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16
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Orecchia P, Yuan W, Oestreich M. Bor-Lewis-Säure-katalysierte Transferhydrocyanierung α- und α,β-substituierter Styrole. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Patrizio Orecchia
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Weiming Yuan
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
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17
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Maier AFG, Tussing S, Zhu H, Wicker G, Tzvetkova P, Flörke U, Daniliuc CG, Grimme S, Paradies J. Borane-Catalyzed Synthesis of Quinolines Bearing Tetrasubstituted Stereocenters by Hydride Abstraction-Induced Electrocyclization. Chemistry 2018; 24:16287-16291. [DOI: 10.1002/chem.201804777] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Alexander F. G. Maier
- Department of Chemistry; University of Paderborn; Warburger Strasse 100 33098 Paderborn Germany
| | - Sebastian Tussing
- Department of Chemistry; University of Paderborn; Warburger Strasse 100 33098 Paderborn Germany
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry; University of Bonn; Beringstr. 4 53115 Bonn Germany
| | - Garrit Wicker
- Department of Chemistry; University of Paderborn; Warburger Strasse 100 33098 Paderborn Germany
| | - Pavleta Tzvetkova
- Institute of Organic Chemistry and Institute for Biological Interfaces-4; Karlsruhe Institute of Technology (KIT); Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Ulrich Flörke
- Department of Chemistry; University of Paderborn; Warburger Strasse 100 33098 Paderborn Germany
| | - Constantin G. Daniliuc
- Institute of Organic Chemistry; University of Münster; Corrensstrasse 40 48149 Münster Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry; University of Bonn; Beringstr. 4 53115 Bonn Germany
| | - Jan Paradies
- Department of Chemistry; University of Paderborn; Warburger Strasse 100 33098 Paderborn Germany
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18
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Khan I, Reed‐Berendt BG, Melen RL, Morrill LC. FLP-Catalyzed Transfer Hydrogenation of Silyl Enol Ethers. Angew Chem Int Ed Engl 2018; 57:12356-12359. [PMID: 30106498 PMCID: PMC6207922 DOI: 10.1002/anie.201808800] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Indexed: 01/08/2023]
Abstract
Herein we report the first catalytic transfer hydrogenation of silyl enol ethers. This metal free approach employs tris(pentafluorophenyl)borane and 2,2,6,6-tetramethylpiperidine (TMP) as a commercially available FLP catalyst system and naturally occurring γ-terpinene as a dihydrogen surrogate. A variety of silyl enol ethers undergo efficient hydrogenation, with the reduced products isolated in excellent yields (29 examples, 82 % average yield).
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Affiliation(s)
- Imtiaz Khan
- School of ChemistryCardiff UniversityMain BuildingPark PlaceCardiffCF10 3ATUK
| | | | - Rebecca L. Melen
- School of ChemistryCardiff UniversityMain BuildingPark PlaceCardiffCF10 3ATUK
| | - Louis C. Morrill
- School of ChemistryCardiff UniversityMain BuildingPark PlaceCardiffCF10 3ATUK
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19
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20
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Drosos N, Cheng GJ, Ozkal E, Cacherat B, Thiel W, Morandi B. Catalytic Reductive Pinacol-Type Rearrangement of Unactivated 1,2-Diols through a Concerted, Stereoinvertive Mechanism. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704936] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nikolaos Drosos
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Gui-Juan Cheng
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Erhan Ozkal
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Bastien Cacherat
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Bill Morandi
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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21
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Drosos N, Cheng GJ, Ozkal E, Cacherat B, Thiel W, Morandi B. Catalytic Reductive Pinacol-Type Rearrangement of Unactivated 1,2-Diols through a Concerted, Stereoinvertive Mechanism. Angew Chem Int Ed Engl 2017; 56:13377-13381. [DOI: 10.1002/anie.201704936] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Nikolaos Drosos
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Gui-Juan Cheng
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Erhan Ozkal
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Bastien Cacherat
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Bill Morandi
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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22
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Bader J, Maier AFG, Paradies J, Hoge B. Perfluoroalkylated Main‐Group Element Lewis Acids as Catalysts in Transfer Hydrogenation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700524] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Julia Bader
- Centrum für Molekulare Materialien Fakultät für Chemie Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
| | - Alexander F. G. Maier
- Institut für Organische Chemie Fakultät für Chemie Universität Paderborn Warburger Straße 100 33098 Paderborn Germany
| | - Jan Paradies
- Institut für Organische Chemie Fakultät für Chemie Universität Paderborn Warburger Straße 100 33098 Paderborn Germany
| | - Berthold Hoge
- Centrum für Molekulare Materialien Fakultät für Chemie Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
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23
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Affiliation(s)
- Zhi-Yun Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
| | - Zhi-Hui Wen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
| | - Xiao-Chen Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
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24
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Liu ZY, Wen ZH, Wang XC. B(C6
F5
)3
-Catalyzed Cascade Reduction of Pyridines. Angew Chem Int Ed Engl 2017; 56:5817-5820. [DOI: 10.1002/anie.201702304] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Zhi-Yun Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
| | - Zhi-Hui Wen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
| | - Xiao-Chen Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; 94 Weijin Road Tianjin 300071 China
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25
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Keess S, Oestreich M. 3-tert
-Butyl-Substituted Cyclohexa-1,4-dienes as Isobutane Equivalents in the B(C6
F5
)3
-Catalyzed Transfer Hydro-tert
-Butylation of Alkenes. Chemistry 2016; 23:5925-5928. [DOI: 10.1002/chem.201604397] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Sebastian Keess
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
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26
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Maier AFG, Tussing S, Schneider T, Flörke U, Qu ZW, Grimme S, Paradies J. Dehydrierende Oxidation von Indolinen und anderen Heterocyclen durch frustrierte Lewis-Paare. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606426] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexander F. G. Maier
- Institut für Organische Chemie; Universität Paderborn; Warburger Straße 100 33098 Paderborn Deutschland
| | - Sebastian Tussing
- Institut für Organische Chemie; Universität Paderborn; Warburger Straße 100 33098 Paderborn Deutschland
| | - Tobias Schneider
- Institut für Organische Chemie; Universität Paderborn; Warburger Straße 100 33098 Paderborn Deutschland
| | - Ulrich Flörke
- Institut für Anorganische Chemie; Universität Paderborn; Warburger Straße 100 33098 Paderborn Deutschland
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry; Institut für Physikalische und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry; Institut für Physikalische und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Jan Paradies
- Institut für Organische Chemie; Universität Paderborn; Warburger Straße 100 33098 Paderborn Deutschland
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27
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Maier AFG, Tussing S, Schneider T, Flörke U, Qu ZW, Grimme S, Paradies J. Frustrated Lewis Pair Catalyzed Dehydrogenative Oxidation of Indolines and Other Heterocycles. Angew Chem Int Ed Engl 2016; 55:12219-23. [PMID: 27594431 DOI: 10.1002/anie.201606426] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 08/02/2016] [Indexed: 11/11/2022]
Abstract
An acceptorless dehydrogenation of heterocycles catalyzed by frustrated Lewis pairs (FLPs) was developed. Oxidation with concomitant liberation of molecular hydrogen proceeded in high to excellent yields for N-protected indolines as well as four other substrate classes. The mechanism of this unprecedented FLP-catalyzed reaction was investigated by mechanistic studies, characterization of reaction intermediates by NMR spectroscopy and X-ray crystal analysis, and by quantum-mechanical calculations. Hydrogen liberation from the ammonium hydridoborate intermediate is the rate-determining step of the oxidation. The addition of a weaker Lewis acid as a hydride shuttle increased the reaction rate by a factor of 2.28 through a second catalytic cycle.
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Affiliation(s)
- Alexander F G Maier
- Institute of Organic Chemistry, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany
| | - Sebastian Tussing
- Institute of Organic Chemistry, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany
| | - Tobias Schneider
- Institute of Organic Chemistry, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany
| | - Ulrich Flörke
- Institute of Inorganic Chemistry, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, University of Bonn, Beringstrasse 4, 53115, Bonn, Germany.
| | - Jan Paradies
- Institute of Organic Chemistry, University of Paderborn, Warburger Strasse 100, 33098, Paderborn, Germany.
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28
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Kojima M, Kanai M. Tris(pentafluorophenyl)borane‐Catalyzed Acceptorless Dehydrogenation of N‐Heterocycles. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606177] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Masahiro Kojima
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences The University of Tokyo Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Japan Science and Technology Agency, ERATO Kanai Life Science Catalysis Project Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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29
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Kojima M, Kanai M. Tris(pentafluorophenyl)borane-Catalyzed Acceptorless Dehydrogenation of N-Heterocycles. Angew Chem Int Ed Engl 2016; 55:12224-7. [DOI: 10.1002/anie.201606177] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 07/24/2016] [Indexed: 01/11/2023]
Affiliation(s)
- Masahiro Kojima
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo, Bunkyo-ku Tokyo 113-0033 Japan
- Japan Science and Technology Agency, ERATO; Kanai Life Science Catalysis Project; Hongo, Bunkyo-ku Tokyo 113-0033 Japan
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30
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Hydrogenation and Transfer Hydrogenation Promoted by Tethered Ru−S Complexes: From Cooperative Dihydrogen Activation to Hydride Abstraction/Proton Release from Dihydrogen Surrogates. Chemistry 2016; 22:10009-16. [DOI: 10.1002/chem.201600386] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Indexed: 11/07/2022]
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31
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Leich V, Spaniol TP, Maron L, Okuda J. Molekulares Calciumhydrid: Dicalciumtrihydrid‐Kation, stabilisiert durch einen neutralen makrocyclischen NNNN‐Liganden. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600552] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Valeri Leich
- Institut für Anorganische Chemie RWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
| | - Thomas P. Spaniol
- Institut für Anorganische Chemie RWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
| | - Laurent Maron
- CNRS, INSA, UPS, UMR 5215, LPCNO Université de Toulouse 135 avenue de Rangueil 31077 Toulouse Frankreich
| | - Jun Okuda
- Institut für Anorganische Chemie RWTH Aachen University Landoltweg 1 52056 Aachen Deutschland
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32
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Leich V, Spaniol TP, Maron L, Okuda J. Molecular Calcium Hydride: Dicalcium Trihydride Cation Stabilized by a Neutral NNNN-Type Macrocyclic Ligand. Angew Chem Int Ed Engl 2016; 55:4794-7. [DOI: 10.1002/anie.201600552] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Valeri Leich
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
| | - Thomas P. Spaniol
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
| | - Laurent Maron
- CNRS, INSA, UPS, UMR 5215, LPCNO; Université de Toulouse; 135 avenue de Rangueil 31077 Toulouse France
| | - Jun Okuda
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52056 Aachen Germany
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