1
|
Vasilyev KA, Antonova AS, Volchkov NS, Logvinenko NA, Nikitina EV, Grigoriev MS, Novikov AP, Kouznetsov VV, Polyanskii KB, Zubkov FI. Influence of Substituents in a Six-Membered Chelate Ring of HG-Type Complexes Containing an N→Ru Bond on Their Stability and Catalytic Activity. Molecules 2023; 28:molecules28031188. [PMID: 36770854 PMCID: PMC9921640 DOI: 10.3390/molecules28031188] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023] Open
Abstract
An efficient approach to the synthesis of olefin metathesis HG-type catalysts containing an N→Ru bond in a six-membered chelate ring was proposed. For the most part, these ruthenium chelates can be prepared easily and in high yields based on the interaction between 2-vinylbenzylamines and Ind II (the common precursor for Ru-complex synthesis). It was demonstrated that the increase of the steric volume of substituents attached to the nitrogen atom and in the α-position of the benzylidene fragment leads to a dramatic decrease in the stability of the target ruthenium complexes. The bulkiest iPr substituent bonded to the nitrogen atom or to the α-position does not allow the closing of the chelate cycle. N,N-Diethyl-1-(2-vinylphenyl)propan-1-amine is a limiting case; its interaction with Ind II makes it possible to isolate the corresponding ruthenium chelate in a low yield (5%). Catalytic activity of the synthesized complexes was tested in RCM reactions and compared with α-unsubstituted catalysts obtained previously. The structural peculiarities of the final ruthenium complexes were thoroughly investigated using XRD and NMR analysis, which allowed making a reliable correlation between the structure of the complexes and their catalytic properties.
Collapse
Affiliation(s)
- Kirill A. Vasilyev
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
| | - Alexandra S. Antonova
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
| | - Nikita S. Volchkov
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
| | - Nikita A. Logvinenko
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
| | - Eugeniya V. Nikitina
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
| | - Mikhail S. Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31, bld. 4, Moscow 119071, Russia
| | - Anton P. Novikov
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky pr. 31, bld. 4, Moscow 119071, Russia
| | - Vladimir V. Kouznetsov
- Laboratorio de Química Orgánica y Biomolecular, Escuela de Química, Universidad Industrial de Santander, Cl. 9 # Cra 27, Bucaramanga 680006, Colombia
| | - Kirill B. Polyanskii
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
- Correspondence: (K.B.P.); (F.I.Z.)
| | - Fedor I. Zubkov
- Organic Chemistry Department, Faculty of Science, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya St., 6, Moscow 117198, Russia
- Correspondence: (K.B.P.); (F.I.Z.)
| |
Collapse
|
2
|
Keita H. Supramolecular Immobilization of Adamantyl and Carboxylate Modified N-Heterocyclic Carbene Ligand on Cucurbituril Substrates. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27051662. [PMID: 35268763 PMCID: PMC8911794 DOI: 10.3390/molecules27051662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 11/16/2022]
Abstract
Herein, the design, synthesis, supramolecular interactions and structural analysis of a novel bidentate carboxylate chelating N-heterocylic carbene (NHC) ligand is presented. The NHC structure was modified to strategically incorporate adamantyl moiety for the formation of a supramolecular complex with host molecules such as cucurbiturils. The adamantyl modified NHC ligand could potentially be used in recoverable homogeneous catalysts when Immobilized on a solid support via host–guest chemistry. As a versatile precursor, NHC ligand (8) was synthesized and characterized by 1H-NMR, 13C-NMR, FTIR, single crystal x-ray crystallography and elemental analysis. A proof-of-principle non-covalent immobilization of the NHC ligand (8) with a Cucurbit[7]uril (CB7) host was demonstrated using 1H-NMR titration.
Collapse
Affiliation(s)
- Hamidou Keita
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
| |
Collapse
|
3
|
Monsigny L, Czarnocki S, Sienkiewicz M, Kopcha W, Frankfurter R, Vogt C, Solodenko W, Kajetanowicz A, Kirschning A, Grela K. Ruthenium Complex Bearing a Hydroxy Group Functionalised N‐Heterocyclic Carbene Ligand – A Universal Platform for Synthesis of Tagged and Immobilised Catalysts for Olefin Metathesis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Louis Monsigny
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Stefan Czarnocki
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Michał Sienkiewicz
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - William Kopcha
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - René Frankfurter
- Institute of Inorganic Chemistry Leibniz University Hannover Callinstr. 9 D-30167 Hannover Germany
| | - Carla Vogt
- Institute of Analytical Chemistry Technical University Freiberg Leipziger Straße 29 09599 Freiberg Germany
| | - Wladimir Solodenko
- Institute of Organic Chemistry Leibniz University Hannover Schneiderberg 1b D-30167 Hannover Germany
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Andreas Kirschning
- Institute of Organic Chemistry Leibniz University Hannover Schneiderberg 1b D-30167 Hannover Germany
| | - Karol Grela
- Biological and Chemical Research Centre, Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| |
Collapse
|