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Nayak MK, Suhr S, Chrysochos N, Rawat H, Schulzke C, Chandrasekhar V, Sarkar B, Jana A. Tethered CAAC-CAAC dimers: oxidation to persistent radical cations and bridging-unit dependent reactivity/stability of the dications. Chem Commun (Camb) 2021; 57:1210-1213. [PMID: 33416055 DOI: 10.1039/d0cc07385g] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein, we report tethered cyclic(alkyl)(amino)carbene (CAAC) dimers in which two CAAC-motifs are connected by an ethylene-, trans-1,2-cyclohexylene- and propylene-spacer through their N-centres. The 1-electron oxidized radical cations are isolable, whereas a significant influence of the bridging unit on the chemical reactivity becomes apparent in and with the 2-electron oxidized products.
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Affiliation(s)
- Mithilesh Kumar Nayak
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Simon Suhr
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany and Universität Stuttgart, Fakultät Chemie, Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Pfaffenwaldring 55, Stuttgart, D-70569, Germany.
| | - Nicolas Chrysochos
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald, D-17489, Germany.
| | - Hemant Rawat
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
| | - Carola Schulzke
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, Greifswald, D-17489, Germany.
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India. and Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany and Universität Stuttgart, Fakultät Chemie, Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Pfaffenwaldring 55, Stuttgart, D-70569, Germany.
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad-500046, Telangana, India.
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Nayak MK, Stubbe J, Neuman NI, Narayanan RS, Maji S, Schulzke C, Chandrasekhar V, Sarkar B, Jana A. N,N'-Ethylene-Bridged Bis-2-Aryl-Pyrrolinium Cations to E-Diaminoalkenes: Non-Identical Stepwise Reversible Double-Redox Coupled Bond Activation Reactions. Chemistry 2020; 26:4425-4431. [PMID: 31994763 PMCID: PMC7187269 DOI: 10.1002/chem.202000255] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Indexed: 12/31/2022]
Abstract
This work presents a stepwise reversible two‐electron transfer induced hydrogen shift leading to the conversion of a bis‐pyrrolinium cation to an E‐diaminoalkene and vice versa. Remarkably, the forward and the reverse reaction, which are both reversible, follow two completely different reaction pathways. Establishing such unprecedented property in this type of processes was possible by developing a novel synthetic route towards the starting dication. All intermediates involved in both the forward and the backward reactions were comprehensively characterized by a combination of spectroscopic, crystallographic, electrochemical, spectroelectrochemical, and theoretical methods. The presented synthetic route opens up new possibilities for the generation of multi‐pyrrolinium cation scaffold‐based organic redox systems, which constitute decidedly sought‐after molecules in contemporary chemistry.
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Affiliation(s)
- Mithilesh Kumar Nayak
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad, 500107, India
| | - Jessica Stubbe
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - Nicolás I Neuman
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.,Instituto de Desarrollo Tecnológico para la Industria Química, CCT Santa Fe CONICET-UNL, Colectora Ruta Nacional 168, Km 472, Paraje El Pozo, 3000, Santa Fe, Argentina
| | | | - Sandipan Maji
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad, 500107, India
| | - Carola Schulzke
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Straße 4, 17487, Greifswald, Germany
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad, 500107, India.,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany.,Institut für Anorganische Chemie, Lehrstuhl für Anorganische Koordinationschemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad, 500107, India
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Wang SM, Han JB, Zhang CP, Qin HL. A solvent-free facile synthesis of (E)-bis(phosphonium)ethylenes from organo-phosphines and TfOCH2CF2H reagent. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Weigand JJ, Feldmann KO, Echterhoff AKC, Ehlers AW, Lammertsma K. Preparation of ligand-stabilized [P4O4]2+ by controlled hydrolysis of a Janus head type diphosphorus trication. Angew Chem Int Ed Engl 2015; 49:6178-81. [PMID: 20645366 DOI: 10.1002/anie.201001363] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jan J Weigand
- Institut für Anorganische und Analytische Chemie and Graduate School of Chemistry, WWU Münster, Corrensstrasse 30, 48149 Münster, Germany.
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Yuan Y, Hou W, Zhang-Negrerie D, Zhao K, Du Y. Direct Oxidative Coupling of Enamines and Electron-Deficient Amines: TBAI/TBHP-Mediated Synthesis of Substituted Diaminoalkenes under Metal-Free Conditions. Org Lett 2014; 16:5410-3. [DOI: 10.1021/ol5026525] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yucheng Yuan
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Wenjuan Hou
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Kang Zhao
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- School
of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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Celik MA, Frenking G, Neumüller B, Petz W. Exploiting the Twofold Donor Ability of Carbodiphosphoranes: Theoretical Studies of [(PPh3)2C→EH2]q(Eq=Be, B+, C2+, N3+, O4+) and Synthesis of the Dication [(Ph3P)2CCH2]2+. Chempluschem 2013; 78:1024-1032. [DOI: 10.1002/cplu.201300169] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Indexed: 11/06/2022]
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Huber SM, Heinemann FW, Audebert P, Weiss R. 4,5-Bis(dialkylamino)-Substituted Imidazolium Systems: Facile Access to N-Heterocyclic Carbenes with Self-Umpolung Option. Chemistry 2011; 17:13078-86. [DOI: 10.1002/chem.201101999] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Weigand J, Feldmann KO, Echterhoff A, Ehlers A, Lammertsma K. Preparation of Ligand-Stabilized [P4O4]2+ by Controlled Hydrolysis of a Janus Head Type Diphosphorus Trication. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001363] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Huber SM, Hennig A, Pühlhofer FG, Weiss R. From DMF to isatine: A novel and general one-pot synthesis of isatine and its N-unsubstituted derivatives vianucleophilic substitution reactions on 1,2-bis(dimethylamino)-1,2-dichloro-ethene. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Affiliation(s)
- Joan Vignolle
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Xavier Cattoën
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
| | - Didier Bourissou
- Université de Toulouse, UPS, LHFA, 118 route de Narbonne, F-31062 Toulouse (France), CNRS, LHFA UMR 5069, F-31062 Toulouse, France, and UCR−CNRS Joint Research Chemistry Laboratory, UMI 2957, Department of Chemistry, University of California, Riverside, California 92521-0403
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