1
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Barlow SR, Halcovitch NR, Akien GR, Coote SC, Evans NH. Cubane-1,3-dicarboxamides as structural isosteres for isophthalamides in hydrogen bond templated interlocked molecules. Chem Commun (Camb) 2024; 60:11532-11535. [PMID: 39310982 DOI: 10.1039/d4cc01859a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/09/2024]
Abstract
The synthesis and characterization of the first examples of cubane containing interlocked molecules are reported. Catenanes and rotaxanes have been prepared by hydrogen bond templation with cubane-1,3-dicarboxamides replacing isophthalamide motifs.
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Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | | | - Geoffrey R Akien
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Susannah C Coote
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
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2
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Puigcerver J, Marin-Luna M, Iglesias-Sigüenza J, Alajarin M, Martinez-Cuezva A, Berna J. Mechanically Planar-to-Point Chirality Transmission in [2]Rotaxanes. J Am Chem Soc 2024; 146:2882-2887. [PMID: 38266249 PMCID: PMC10859924 DOI: 10.1021/jacs.3c11611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
Herein we describe an effective transmission of chirality, from mechanically planar chirality to point chirality, in hydrogen-bonded [2]rotaxanes. A highly selective mono-N-methylation of one (out of four) amide N atom at the macrocyclic counterpart of starting achiral rotaxanes generates mechanically planar chirality. Followed by chiral resolution, both enantiomers were subjected to a base-promoted intramolecular cyclization, where their interlocked threads were transformed into new lactam moieties. As a matter of fact, the mechanically planar chiral information was effectively transferred to the resulting stereocenters (covalent chirality) of the newly formed heterocycles. Upon removing the entwined macrocycle, the final lactams were obtained with high enantiopurity.
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Affiliation(s)
- Julio Puigcerver
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Marta Marin-Luna
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Javier Iglesias-Sigüenza
- Departamento
de Quimica Organica and Centro de Innovacion en Quimica Avanzada (ORFEO-CINQA), Universidad de Sevilla, E-41012 Sevilla, Spain
| | - Mateo Alajarin
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento
de Quimica Organica, Facultad de Quimica, Regional Campus of International
Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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3
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Joy F, Nizam A, Nair Y, Pillai R, Devasia J, Nagella P. Templating motifs of molecular axles in hydrogen bonding [2]rotaxanes: Synthesis and applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111696] [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]
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4
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Lopez-Leonardo C, Saura-Sanmartin A, Marin-Luna M, Alajarin M, Martinez-Cuezva A, Berna J. Ring-to-Thread Chirality Transfer in [2]Rotaxanes for the Synthesis of Enantioenriched Lactams. Angew Chem Int Ed Engl 2022; 61:e202209904. [PMID: 35916122 DOI: 10.1002/anie.202209904] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Indexed: 01/07/2023]
Abstract
The synthesis of chiral mechanically interlocked molecules has attracted a lot of attention in the last few years, with applications in different fields, such as asymmetric catalysis or sensing. Herein we describe the synthesis of orientational mechanostereoisomers, which include a benzylic amide macrocycle with a stereogenic center, and nonsymmetric N-(arylmethyl)fumaramides as the axis. The base-promoted cyclization of the initial fumaramide thread allows enantioenriched value-added compounds, such as lactams of different ring sizes and amino acids, to be obtained. The chiral information is effectively transmitted across the mechanical bond from the encircling ring to the interlocked lactam. High levels of enantioselectivity and full control of the regioselectivity of the final cyclic compounds are attained.
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Affiliation(s)
- Carmen Lopez-Leonardo
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, 30100, Murcia, Spain
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5
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Lopez-Leonardo C, Saura-Sanmartin A, Marin-Luna M, Alajarin M, Martinez-Cuezva A, Berna J. Ring‐to‐Thread Chirality Transfer in [2]Rotaxanes for the Synthesis of Enantioenriched Lactams. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209904] [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)
| | | | - Marta Marin-Luna
- Universidad de Murcia Química Orgánica Campus de Espinardo 30100 Murcia SPAIN
| | - Mateo Alajarin
- Universidad de Murcia Química Orgánica Campus de Espinardo 30100 Murcia SPAIN
| | | | - Jose Berna
- Universidad de Murcia Quimica Organica Campus de Espinardo 30100 Murcia SPAIN
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6
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Maynard JRJ, Galmés B, Stergiou AD, Symes MD, Frontera A, Goldup SM. Anion-π Catalysis Enabled by the Mechanical Bond. Angew Chem Int Ed Engl 2022; 61:e202115961. [PMID: 35040543 PMCID: PMC9303940 DOI: 10.1002/anie.202115961] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Indexed: 12/13/2022]
Abstract
We report a series of rotaxane-based anion-π catalysts in which the mechanical bond between a bipyridine macrocycle and an axle containing an NDI unit is intrinsic to the activity observed, including a [3]rotaxane that catalyses an otherwise disfavoured Michael addition in >60 fold selectivity over a competing decarboxylation pathway that dominates under Brønsted base conditions. The results are rationalized by detailed experimental investigations, electrochemical and computational analysis.
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Affiliation(s)
| | - Bartomeu Galmés
- Department of ChemistryUniversitat de les Illes BalearsCrta de Valldemossa km 7.507122Palma de MallorcaBalearesSpain
| | - Athanasios D. Stergiou
- WestCHEM School of ChemistryUniversity of Glasgow, Joseph Black BuildingUniversity AvenueGlasgowG12 8QQUK
| | - Mark D. Symes
- WestCHEM School of ChemistryUniversity of Glasgow, Joseph Black BuildingUniversity AvenueGlasgowG12 8QQUK
| | - Antonio Frontera
- Department of ChemistryUniversitat de les Illes BalearsCrta de Valldemossa km 7.507122Palma de MallorcaBalearesSpain
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7
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Maynard JRJ, Galmés B, Stergiou A, Symes M, Frontera A, Goldup SM. Anion‐π Catalysis Enabled by the Mechanical Bond. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Mark Symes
- University of Glasgow Chemistry UNITED KINGDOM
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8
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Perez JDM, Alajarin M, Martinez-Cuezva A, Berna J. Modulating the Catalytic Activity by the Mechanical Bond: Organocatalysis with Polyamide [2]Rotaxanes bearing a Secondary Amino Function at the Thread. Org Chem Front 2022. [DOI: 10.1039/d2qo00481j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The modulation of the catalytic activity of degenerate succinamide-based [2]rotaxanes by changes at their macrocyclic component is disclosed herein. These systems, bearing an acyclic secondary amine function at the thread...
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9
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Perez JDM, Puigcerver J, Orlando T, Pastor A, Martins MAP, Alajarin M, Martinez-Cuezva A, Berna J. Mechanical bonding activation in rotaxane-based organocatalysts. Org Chem Front 2021. [DOI: 10.1039/d1qo00789k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Interlocked organocatalysts show enhanced catalytic performance when compared with their non-interlocked threads.The ring cooperatively activates the substrates, facilitating the formation and stabilization of catalytically active intermediates.
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Affiliation(s)
- Jesus de Maria Perez
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Julio Puigcerver
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Tainara Orlando
- Núcleo de Química de Heterociclos (NUQUIMHE)
- Departamento de Química
- Universidade Federal de Santa Maria
- 97105-900 Santa Maria-RS
- Brazil
| | - Aurelia Pastor
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE)
- Departamento de Química
- Universidade Federal de Santa Maria
- 97105-900 Santa Maria-RS
- Brazil
| | - Mateo Alajarin
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
| | - Jose Berna
- Departamento de Química Orgánica
- Facultad de Química
- Regional Campus of International Excellence “Campus Mare Nostrum”
- Universidad de Murcia
- Murcia
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