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Korb M, Ghazvini SMBH, Low PJ. Migration of Condensed Aromatic Hydrocarbons During Alkyne-Vinylidene Rearrangements. Chemistry 2024; 30:e202400930. [PMID: 38780030 DOI: 10.1002/chem.202400930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 05/25/2024]
Abstract
Diarylacetylenes ArC≡CAr featuring condensed aromatic hydrocarbon fragments (Ar) such as naphthalene, anthracene, phenanthrene and pyrene were converted into vinylidene ligands by 1,2-migration reactions within the coordination sphere of half-sandwich complexes [MII(dppe)Cp]+ (MII = RuII, FeII). Comparison of the extent of conversion of the alkyne substrates to the vinylidene complexes [Ru{=C=CAr2}(dppe)Cp]+ with those obtained from acetylenes functionalized by smaller groups (H, CH3, Ph) show that the molecular volume (VM) of the migrating group and relief of steric congestion plays a role during the rearrangement process. Conversely, the H-atoms from the larger condensed ring aryl groups that are in close proximity to the migrating sites also have a significant influence on the efficacy and extent of the reaction by restricting access of the alkyne to the metal center, resulting in a less effective migration reaction. This combination of competing steric factors (acceleration due to relief of steric congestion and restricted access of the alkyne moiety to the reaction site) is exemplified by the facile migration of 1-pyryl entities and the low yields of vinylidene products formed from 1,2-bis(9-anthryl)acetylene.
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Affiliation(s)
- Marcus Korb
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Seyed M B H Ghazvini
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Paul J Low
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
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Cantatore C, Korb M, Lang H, Cirilli R. ON/OFF receptor-like enantioseparation of planar chiral 1,2-ferrocenes on an amylose-based chiral stationary phase: The role played by 2-propanol. Anal Chim Acta 2022; 1211:339880. [DOI: 10.1016/j.aca.2022.339880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 01/02/2023]
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Korb M, Lang H. Rearrangements and Migrations along the Ferrocene Periphery: On the Way to Planar‐Chiral and (Multi)Substitution Patterns. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marcus Korb
- The University of Western Australia School of Molecular Sciences 35 Stirling Highway Crawley Perth WA 6009 Australia
| | - Heinrich Lang
- Technische Universität Chemnitz Faculty of Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
- MAIN Research Center Rosenbergstraße 6 09126 Chemnitz Germany
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Unanticipated ionic ferrocenyl compounds based on 5,5′-bis(1-hydroxytetrazole). Molecular structures, anti-migration and burning rate catalytic performances. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2020.100090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Feberero C, Sedano C, Suárez-Pantiga S, López CS, Sanz R. Experimental and Computational Study of the 1,5-O → N Carbamoyl Snieckus-Fries-Type Rearrangement. J Org Chem 2020; 85:12561-12578. [PMID: 32897069 DOI: 10.1021/acs.joc.0c01732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The reactions of o-lithiated O-aryl N,N-diethylcarbamates with different C-N multiple bond electrophiles have been thoroughly studied. A 1,5-O → N carbamoyl shift, a new variation of the anionic Fries-type rearrangement, takes place when nitriles, imines, or alkylcarbodiimides are employed. In these cases, the carbamoyl group plays a dual role as a directing group, building up a variety of functional groups through the 1,5-O → N carbamoyl migration. On the other hand, the use of iso(thio)cyanates and arylcarbodiimides led to non-rearranged o-functionalized O-arylcarbamates. This reactivity was further computationally explored, and the governing factor could be traced back to the relative basicity of the alternative products (migrated vs nonmigrated substrates). This exploration also provided interesting insights about the degree of complexation of the lithium cations onto these substrates. A new access to useful 2-hydroxybenzophenone derivatives has also been developed.
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Affiliation(s)
- Claudia Feberero
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Carlos Sedano
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Samuel Suárez-Pantiga
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Carlos Silva López
- Departamento de Quı́mica Orgánica and CITACA (Agri-Food Research and Transfer Cluster), Universidade de Vigo, 36310 Vigo, Spain
| | - Roberto Sanz
- Área de Quı́mica Orgánica, Departamento de Quı́mica, Facultad de Ciencias, Universidad de Burgos, Pza. Misael Bañuelos s/n, 09001 Burgos, Spain
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Korb M, Schaarschmidt D, Grumbt M, König M, Lang H. Evaluation of the Transferability of the “Flexible Steric Bulk” Concept from N‐Heterocyclic Carbenes to Planar‐Chiral Phosphinoferrocenes and their Electronic Modification. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
| | - Dieter Schaarschmidt
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
| | - Martin Grumbt
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
| | - Matthias König
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
| | - Heinrich Lang
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry Inorganic Chemistry 09107 Chemnitz Germany
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Ghazzy A, Taher D, Helal W, Korb M, Khalyfeh K, Awwadi FF, Al-Shewiki RK, Weheabby S, Al-Said N, Abu-Orabi ST, Lang H. Aryl ferrocenylmethylesters: Synthesis, solid-state structure and electrochemical investigations. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.12.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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Nikovskiy IA, Spiridonov KA, Zakharova DV, Platonova EO, Pavlov AA, Nelyubina YV, Polezhaev AV. Ortho-lithiation of N-aryl ferrocenylmethanimines. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.118976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Korb M, Mahrholdt J, Liu X, Lang H. Reactivity of Planar‐Chiral α‐Ferrocenyl Carbocations towards Electron‐Rich Aromatics. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801430] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
| | - Julia Mahrholdt
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
| | - Xianming Liu
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
| | - Heinrich Lang
- Technische Universität Chemnitz Faculty of Natural Sciences Institute of Chemistry, Inorganic Chemistry 09107 Chemnitz Germany
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Korb M, Lang H. The anionic Fries rearrangement: a convenient route to ortho-functionalized aromatics. Chem Soc Rev 2019; 48:2829-2882. [DOI: 10.1039/c8cs00830b] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The scope and mechanism of anionic (hetero-) Fries rearrangements are summarized for various migrating groups and arenes, including applications and computational studies.
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Affiliation(s)
- Marcus Korb
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
| | - Heinrich Lang
- Technische Universität Chemnitz
- Faculty of Natural Sciences
- Institute of Chemistry
- Inorganic Chemistry
- Chemnitz
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Strehler F, Rüffer T, Noll J, Schaarschmidt D, Hildebrandt A, Lang H. Cationic tri(ferrocenecarbonitrile)silver(I). ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2018. [DOI: 10.1515/znb-2018-0090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The synthesis of the tri-coordinated ferrocenecarbonitrile silver(I) complex [Ag(N≡CFc)3]OTf (3) is reported. Its electrochemical behavior shows that the three ferrocenyl units are oxidized in a very close potential range. In addition, the molecular structure of 3 in the solid state is discussed, showing that silver(I) is exclusively coordinated by three ferrocenecarbonitrile molecules.
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Affiliation(s)
- Frank Strehler
- Technische Universität Chemnitz , Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry , D-09107 Chemnitz , Germany
| | - Tobias Rüffer
- Technische Universität Chemnitz , Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry , D-09107 Chemnitz , Germany
| | - Julian Noll
- Technische Universität Chemnitz , Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry , D-09107 Chemnitz , Germany
| | - Dieter Schaarschmidt
- Universität Hamburg, Institut für Anorganische Chemie, Martin-Luther-King-Platz 6 , 20146 Hamburg , Germany
| | - Alexander Hildebrandt
- Technische Universität Chemnitz , Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry , D-09107 Chemnitz , Germany
| | - Heinrich Lang
- Technische Universität Chemnitz , Faculty of Natural Sciences, Institute of Chemistry, Inorganic Chemistry , D-09107 Chemnitz , Germany , Tel. +49 (0)371 531 21210, Fax +49 (0)371 531 21219
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