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Bibik YS, Khomenko DM, Doroshchuk RO, Raspertova IV, Bargan A, Lampeka RD. Synthesis and crystal structure of N1, N2-di-methyl-ethane-dihydrazide. Acta Crystallogr E Crystallogr Commun 2024; 80:148-151. [PMID: 38333116 PMCID: PMC10848980 DOI: 10.1107/s2056989024000239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 01/07/2024] [Indexed: 02/10/2024]
Abstract
The title compound, N 1,N 2-di-methyl-ethane-dihydrazide, C4H10N4O2, was obtained by the methyl-ation of oxalyl dihydrazide protected with phthalimide. The mol-ecule is essentially non-planar with a dihedral angle between the two planar hydrazide fragments of 86.5 (2)°. This geometry contributes to the formation of a multi-contact three-dimensional supra-molecular network via C-H⋯O, N-H⋯O and N-H⋯N hydrogen bonds.
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Affiliation(s)
- Yurii S. Bibik
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska St 64, Kyiv, Ukraine
| | - Dmytro M. Khomenko
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska St 64, Kyiv, Ukraine
- Enamine Ltd., Winston Churchill St 78, Kyiv 02094, Ukraine
| | - Roman O. Doroshchuk
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska St 64, Kyiv, Ukraine
- Enamine Ltd., Winston Churchill St 78, Kyiv 02094, Ukraine
| | - Ilona V. Raspertova
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska St 64, Kyiv, Ukraine
- Enamine Ltd., Winston Churchill St 78, Kyiv 02094, Ukraine
| | - Alexandra Bargan
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41A, 700487 Iasi, Romania
| | - Rostyslav D. Lampeka
- Department of Chemistry, Kyiv National Taras Shevchenko University, Volodymyrska St 64, Kyiv, Ukraine
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2
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Petrenko YP, Vynohradov OS, Khomenko DM, Doroshchuk RO, Raspertova IV, Shova S, Lampeka RD. Crystal structure and Hirshfeld-surface analysis of di-aqua-bis-(5-methyl-1 H-1,2,4-triazole-3-carboxyl-ato)copper(II). Acta Crystallogr E Crystallogr Commun 2024; 80:54-57. [PMID: 38312166 PMCID: PMC10833364 DOI: 10.1107/s2056989023010770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 12/14/2023] [Indexed: 02/06/2024]
Abstract
The title compound, [Cu(HL)2(H2O)2] or [Cu(C4H4N3O2)2(H2O)2], is a mononuclear octa-hedral CuII complex based on 5-methyl-1H-1,2,4-triazole-3-carb-oxy-lic acid (H2 L). [Cu(HL)2(H2O)2] was synthesized by reaction of H2 L with copper(II) nitrate hexa-hydrate (2:1 stoichiometric ratio) in water under ambient conditions to produce clear light-blue crystals. The central Cu atom exhibits an N2O4 coordination environment in an elongated octa-hedral geometry provided by two bidentate HL - anions in the equatorial plane and two water mol-ecules in the axial positions. Hirshfeld surface analysis revealed that the most important contributions to the surface contacts are from H⋯O/O⋯H (33.1%), H⋯H (29.5%) and H⋯N/N⋯H (19.3%) inter-actions.
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Affiliation(s)
- Yuliia P. Petrenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Oleksandr S. Vynohradov
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Dmytro M. Khomenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Roman O. Doroshchuk
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Ilona V. Raspertova
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
| | - Sergiu Shova
- "PetruPoni" Institute of Macromolecular Chemistry, Aleea Gr., GhicaVoda 41A, 700487 Iasi, Romania
| | - Rostyslav D. Lampeka
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska str. 64/13, 01601 Kyiv, Ukraine
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3
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Dresler E, Woliński P, Wróblewska A, Jasiński R. On the Question of Zwitterionic Intermediates in the [3+2] Cycloaddition Reactions between Aryl Azides and Ethyl Propiolate. Molecules 2023; 28:8152. [PMID: 38138640 PMCID: PMC10745654 DOI: 10.3390/molecules28248152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/24/2023] Open
Abstract
The molecular mechanism of the [3+2] cycloaddition reactions between aryl azides and ethyl propiolate was evaluated in the framework of the Molecular Electron Density Theory. It was found that independently of the nature of the substituent within the azide molecule, the cycloaddition process is realized via a polar but single-step mechanism. All attempts of localization as postulated earlier by Abu-Orabi and coworkers' zwitterionic intermediates were not successful. At the same time, the formation of zwitterions with an "extended" conformation is possible on parallel reaction paths. The ELF analysis shows that the studied cycloaddition reaction leading to the 1,4-triazole proceeds by a two-stage one-step mechanism. It also revealed that both zwitterions are created by the donation of the nitrogen atom's nonbonding electron densities to carbon atoms of ethyl propiolate.
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Affiliation(s)
- Ewa Dresler
- Łukasiewicz Research Network—Institute of Heavy Organic Synthesis “Blachownia”, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland;
| | - Przemysław Woliński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland;
| | - Aneta Wróblewska
- Department of Organic Chemistry, Faculty of Chemistry, University of Lódź, Tamka 12, 91-403 Łódź, Poland;
| | - Radomir Jasiński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland;
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García-López J, Khomenko DM, Zakharchenko BV, Doroshchuk RO, Starova VS, Iglesias MJ, Lampeka RD, López-Ortiz F. Solvent- and functional-group-assisted tautomerism of 3-alkyl substituted 5-(2-pyridyl)-1,2,4-triazoles in DMSO-water. Org Biomol Chem 2023; 21:9443-9458. [PMID: 37997179 DOI: 10.1039/d3ob01651j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
The tautomerism of a series of 5-alkyl substituted 3-(2-pyridyl)-1,2,4-triazoles in DMSO-d6-containing water has been investigated by 1H, 13C and 15N NMR spectroscopy. The populations of the three possible regioisomers in the tautomeric equilibrium (A [3-alkyl-5-(2-pyridyl)-1H], B [5-alkyl-3-(2-pyridyl)-1H] and C [5-alkyl-3-(2-pyridyl)-4H]) were determined. Isomers A (17-40%) and B (54-79%) are the major components and their ratio is insensitive to the substitution pattern, except for the unsubstituted and the methoxymethyl substituted derivatives. The isomer C (3-5%) has been fully characterised for the first time by NMR spectroscopy. Activation energies of tautomerisation (14.74-16.78 kcal mol-1) were determined by EXSY experiments, which also supported the involvement of water in the tautomerisation. Substituent effects on the 15N chemical shifts are relatively small. The DFT study of the tautomerism in DMSO-water showed that both A/B and B/C interconversions are assisted by the pyridine substituent and catalysed by solvent molecules. The NH-A/NH-B tautomerisation takes place via a relayed quadruple proton transfer mediated by three water molecules in the hydrogen-bonded cyclic substructure of a triazole·4H2O complex. The equilibrium B ⇄ C involves three steps: NH-B transfer to the pyridyl nitrogen mediated by a water molecule in a 1 : 1 cyclic complex, rotamerisation to bring the pyridinium NH close to N4 of the triazole catalysed by complexation to a DMSO molecule and transfer of the NH from the pyridinium donor to the N4 acceptor via a 1 : 1 complex with a bridging water molecule. This mechanism of 1,3-prototropic shift in triazoles is unprecedented in the literature.
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Affiliation(s)
- Jesús García-López
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain.
| | - Dmytro M Khomenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine.
| | - Borys V Zakharchenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine.
| | - Roman O Doroshchuk
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine.
| | - Viktoriia S Starova
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine.
| | - María José Iglesias
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain.
| | - Rostyslav D Lampeka
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv 01601, Ukraine.
| | - Fernando López-Ortiz
- Área de Química Orgánica, Research Centre CIAIMBITAL, Universidad de Almería, Carretera de Sacramento s/n, Almería, 04120, Spain.
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Synthesis of 6,7-dihydro-5H-benzo[c]-1,2,4-triazolo[3,4-a]azepines and 6,7-dihydro-5H-benzo[c]tetrazolo[5,1-a]azepines. Chem Heterocycl Compd (N Y) 2023. [DOI: 10.1007/s10593-023-03149-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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6
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Petrenko YP, Piasta K, Khomenko DM, Doroshchuk RO, Shova S, Novitchi G, Toporivska Y, Gumienna-Kontecka E, Martins LMDRS, Lampeka RD. An investigation of two copper(ii) complexes with a triazole derivative as a ligand: magnetic and catalytic properties. RSC Adv 2021; 11:23442-23449. [PMID: 35479774 PMCID: PMC9036593 DOI: 10.1039/d1ra03107d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/24/2021] [Indexed: 12/13/2022] Open
Abstract
Two new copper(ii) complexes [Cu2(L)2(OAc)2(H2O)2] (1) (L = 3-methyl-5-pyridin-2-yl-1,2,4-triazole) and [CuL2] (2) were prerared and thoroughly studied. The complexes are able to selectively catalyze the oxidation of styrene towards benzaldehyde and of cyclohexane to KA oil. The 2D coordination polymer 1 showed an antiferromagnetic behaviour attributed to the intrachain magnetic coupling.
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Affiliation(s)
- Yuliia P Petrenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv Volodymyrska Street, 64/13 Kyiv 01601 Ukraine
| | - Karolina Piasta
- Faculty of Chemistry, University of Wroclaw F. Joliot-Curie 14 50-383 Wroclaw Poland
| | - Dmytro M Khomenko
- Department of Chemistry, Taras Shevchenko National University of Kyiv Volodymyrska Street, 64/13 Kyiv 01601 Ukraine
| | - Roman O Doroshchuk
- Department of Chemistry, Taras Shevchenko National University of Kyiv Volodymyrska Street, 64/13 Kyiv 01601 Ukraine
| | - Sergiu Shova
- "Petru Poni" Institute of Macromolecular Chemistry, Laboratory of Inorganic Polymers Aleea Grigore Ghica Voda No. 41A RO-700487 Iasi Romania
| | - Ghénadie Novitchi
- Laboratoire National des Champs Magnétiques Intenses, UPR CNRS 3228, Université Grenoble-Alpes 25 rue des Martyrs, B.P. 166 38042 Grenoble Cedex 9 France
| | - Yuliya Toporivska
- Faculty of Chemistry, University of Wroclaw F. Joliot-Curie 14 50-383 Wroclaw Poland
| | | | - Luísa M D R S Martins
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Rostyslav D Lampeka
- Department of Chemistry, Taras Shevchenko National University of Kyiv Volodymyrska Street, 64/13 Kyiv 01601 Ukraine
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