1
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Cutillas-Font G, Pastor A, Alajarin M, Martinez-Cuezva A, Marin-Luna M, Batanero B, Berna J. Mechanical insulation of aza-Pechmann dyes within [2]rotaxanes. Chem Sci 2024; 15:13823-13831. [PMID: 39211492 PMCID: PMC11352530 DOI: 10.1039/d4sc03657c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 07/28/2024] [Indexed: 09/04/2024] Open
Abstract
Aza-Pechmann derivatives have emerged as interesting building blocks for the preparation of organic electronic devices. The development of methodologies aimed to enhance their chemical stability and modulate their physical and chemical properties constitutes an interesting goal. Here we report the synthesis of mechanically interlocked aza-Pechmann dyes with benzylic amide macrocycles, along with the study of how the mechanical bond impacts their stability, photophysical and redox properties. Rotaxanes composed of Pechmann dilactams as threads exhibit one of the highest energy barriers for macrocyclic ring rotation, highlighting the strength of the attractive interactions ring-thread within the interlocked structure. Their enhanced thermal stability, compared to the non-interlocked counterparts, evidences the protective role of the macrocycle. Computational and electrochemical analyses indicate that the benzylic amide macrocycle improves the stability of the HOMO and LUMO orbitals of the interlocked dyes. Finally, spectroscopic and electrochemical data reveal that the macrocycle subtly modulates the optoelectronic and redox behaviour of the Pechmann dilactams.
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Affiliation(s)
- Guillermo Cutillas-Font
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
| | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
| | - Alberto Martinez-Cuezva
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
| | - Marta Marin-Luna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
| | - Belen Batanero
- Department of Organic Chemistry and Inorganic Chemistry, University of Alcala, Institute of Chemical Research AndrésM. del Rio 28805 Alcalá de Henares Madrid Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence Campus Mare Nostrum 30100 Murcia Spain
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2
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Puigcerver J, Zamora-Gallego JM, Marin-Luna M, Martinez-Cuezva A, Berna J. Urea-Based [2]Rotaxanes as Effective Phase-Transfer Organocatalysts: Hydrogen-Bonding Cooperative Activation Enabled by the Mechanical Bond. J Am Chem Soc 2024; 146:22887-22892. [PMID: 38975636 PMCID: PMC11345763 DOI: 10.1021/jacs.4c06630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/28/2024] [Accepted: 07/01/2024] [Indexed: 07/09/2024]
Abstract
We finely designed a set of [2]rotaxanes with urea threads and tested them as hydrogen-bonding phase-transfer catalysts in two different nucleophilic substitutions requiring the activation of the reactant fluoride anion. The [2]rotaxane bearing a fluorinated macrocycle and a fluorine-containing urea thread displayed significantly enhanced catalytic activity in comparison with the combination of both noninterlocked components. This fact highlights the notably beneficial role of the mechanical bond, cooperatively activating the processes through hydrogen-bonding interactions.
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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
| | - Jose M. Zamora-Gallego
- 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
| | - 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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DiNardi RG, Rasheed S, Capomolla SS, Chak MH, Middleton IA, Macreadie LK, Violi JP, Donald WA, Lusby PJ, Beves JE. Photoswitchable Catalysis by a Self-Assembled Molecular Cage. J Am Chem Soc 2024; 146:21196-21202. [PMID: 39051845 PMCID: PMC11311219 DOI: 10.1021/jacs.4c04846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/27/2024]
Abstract
A heteroleptic [Pd2L2L'2]4+ coordination cage containing a photoswitchable azobenzene-derived ligand catalyzes the Michael addition reaction between methyl vinyl ketone and benzoyl nitromethane within its cavity. The corresponding homoleptic cages are catalytically inactive. The heteroleptic cage can be reversibly disassembled and reassembled using 530 and 405 nm light, respectively, allowing catalysis within the cage to be switched OFF and ON at will.
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Affiliation(s)
- Ray G. DiNardi
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Samina Rasheed
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | | | - Man Him Chak
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Isis A. Middleton
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | | | - Jake P. Violi
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - William A. Donald
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
| | - Paul J. Lusby
- EaStCHEM
School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster
Road, Edinburgh, Scotland EH9 3FJ, U.K.
| | - Jonathon E. Beves
- School
of Chemistry, UNSW Sydney, Sydney, New South Wales 2052, Australia
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4
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Razi SS, Marin-Luna M, Alajarin M, Martinez-Cuezva A, Berna J. Conjugated bis(enaminones) as effective templates for rotaxane assembly and their post-synthetic modifications. Commun Chem 2024; 7:170. [PMID: 39098851 PMCID: PMC11298525 DOI: 10.1038/s42004-024-01258-4] [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: 06/25/2024] [Accepted: 07/26/2024] [Indexed: 08/06/2024] Open
Abstract
The development of efficient methods for the synthesis of mechanically interlocked compounds is currently considered a major challenge in supramolecular chemistry. Twofold vinylogous fumaramides, a class of conjugated bis(enaminones), successfully achieve the assembly of hydrogen-bonded amide-based rotaxanes, with a templating ability comparable to that of their parent fumaramide-based systems, showcasing full conversions and impressive yields up to 92%. Computational calculations offer a compelling explanation for the remarkable efficiency of these bis(enaminones) in driving the synthesis of unprecedented rotaxanes. The reactivity of these interlocked species was thoroughly investigated, revealing that a one-step double stopper-exchange process can be successfully performed while preserving the mechanical bond. This approach facilitates the formation of controllable rotaxanes, including a three-station molecular shuttle, whose assembly via a clipping methodology is highly unselective. The internal translational motion of this latter species has been successfully controlled in a reversible way by means of a cycloaddition/retrocycloaddition sequence.
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Affiliation(s)
- Syed S Razi
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
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5
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Barlow SR, Halcovitch NR, Evans NH. A pyridine- N-oxide catenane for cation recognition. Org Biomol Chem 2024; 22:3001-3008. [PMID: 38526411 DOI: 10.1039/d4ob00176a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The rapid preparation of a pyridine-N-oxide containing [2]catenane is described. The [2]catenane was characterized by NMR spectroscopy, mass spectrometry and X-ray single crystal structure determination. 1H NMR titration experiments reveal the [2]catenane may be reversibly protonated, as well as an ability to bind lithium cations more strongly than sodium cations.
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Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | | | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
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6
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McCarthy DR, Xu K, Schenkelberg ME, Balegamire NAN, Liang H, Bellino SA, Li J, Schneebeli ST. Kinetically controlled synthesis of rotaxane geometric isomers. Chem Sci 2024; 15:4860-4870. [PMID: 38550687 PMCID: PMC10967009 DOI: 10.1039/d3sc04412b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 01/24/2024] [Indexed: 04/30/2024] Open
Abstract
Geometric isomerism in mechanically interlocked systems-which arises when the axle of a mechanically interlocked molecule is oriented, and the macrocyclic component is facially dissymmetric-can provide enhanced functionality for directional transport and polymerization catalysis. We now introduce a kinetically controlled strategy to control geometric isomerism in [2]rotaxanes. Our synthesis provides the major geometric isomer with high selectivity, broadening synthetic access to such interlocked structures. Starting from a readily accessible [2]rotaxane with a symmetrical axle, one of the two stoppers is activated selectively for stopper exchange by the substituents on the ring component. High selectivities are achieved in these reactions, based on coupling the selective formation reactions leading to the major products with inversely selective depletion reactions for the minor products. Specifically, in our reaction system, the desired (major) product forms faster in the first step, while the undesired (minor) product subsequently reacts away faster in the second step. Quantitative 1H NMR data, fit to a detailed kinetic model, demonstrates that this effect (which is conceptually closely related to minor enantiomer recycling and related processes) can significantly improve the intrinsic selectivity of the reactions. Our results serve as proof of principle for how multiple selective reaction steps can work together to enhance the stereoselectivity of synthetic processes forming complex mechanically interlocked molecules.
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Affiliation(s)
- Dillon R McCarthy
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
| | - Ke Xu
- Departments of Industrial & Molecular Pharmaceutics, Chemistry, and Medicinal Chemistry & Molecular Pharmacology, Purdue University West Lafayette IN 47907 USA
| | - Mica E Schenkelberg
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
- Departments of Industrial & Molecular Pharmaceutics, Chemistry, and Medicinal Chemistry & Molecular Pharmacology, Purdue University West Lafayette IN 47907 USA
| | - Nils A N Balegamire
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
- Departments of Industrial & Molecular Pharmaceutics, Chemistry, and Medicinal Chemistry & Molecular Pharmacology, Purdue University West Lafayette IN 47907 USA
| | - Huiming Liang
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
| | - Shea A Bellino
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
| | - Jianing Li
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
- Departments of Industrial & Molecular Pharmaceutics, Chemistry, and Medicinal Chemistry & Molecular Pharmacology, Purdue University West Lafayette IN 47907 USA
| | - Severin T Schneebeli
- Departments of Chemistry, Pathology, and Materials Science Program, University of Vermont Burlington VT 05405 USA
- Departments of Industrial & Molecular Pharmaceutics, Chemistry, and Medicinal Chemistry & Molecular Pharmacology, Purdue University West Lafayette IN 47907 USA
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7
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Tseng IC, Zhang MX, Kang SL, Chiu SH. An Anion-Switchable Dual-Function Rotaxane Catalyst. Angew Chem Int Ed Engl 2023; 62:e202309889. [PMID: 37670563 DOI: 10.1002/anie.202309889] [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: 07/12/2023] [Revised: 08/22/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
In situ switching of the associated anions of a rotaxane catalyst between Cl- and TFPB- exposes its dialkylammonium and imidazolium stations, respectively, thereby selectively catalyzing the reactions of a mixture of trans-cinnamaldehyde and an aliphatic thiol to yield the Michael adduct and the thioacetal product, respectively.
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Affiliation(s)
- I-Cheng Tseng
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
| | - Min-Xuan Zhang
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
| | - Shih-Lun Kang
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
| | - Sheng-Hsien Chiu
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
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8
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Saura-Sanmartin A. Light-responsive rotaxane-based materials: inducing motion in the solid state. Beilstein J Org Chem 2023; 19:873-880. [PMID: 37346498 PMCID: PMC10280056 DOI: 10.3762/bjoc.19.64] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/05/2023] [Indexed: 06/23/2023] Open
Abstract
Light-responsive rotaxane-based solid-state materials are ideal scaffolds in order to develop smart materials due to the properties provided by the mechanical bond, such as control over the dynamics of the components upon application of external stimuli. This perspective aims to highlight the relevance of these materials, by pointing out recent examples of photoresponsive materials prepared from a rotaxanated architecture in which motion of the counterparts and/or macroscopic motion of the interlocked materials are achieved. Although further development is needed, these materials are envisioned as privileged scaffolds which will be used for different advanced applications in the area of molecular machinery.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, 30100 Murcia, Spain
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9
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Saura-Sanmartin A, Nicolas-Garcia T, Pastor A, Quiñonero D, Alajarin M, Martinez-Cuezva A, Berna J. Control of the assembly of a cyclic hetero[4]pseudorotaxane from a self-complementary [2]rotaxane. Chem Sci 2023; 14:4143-4151. [PMID: 37063802 PMCID: PMC10094293 DOI: 10.1039/d3sc00886j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023] Open
Abstract
The self-association of a ditopic [2]rotaxane with two macrocycles mainly leads to a [4]pseudorotaxane which can be reversibly disassembled by adding competitive binders, varying the solvent polarity and changing a binding site affinity.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Tomas Nicolas-Garcia
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - David Quiñonero
- Departamento de Química, Universidad de las Islas Baleares Crta de Valldemossa km 7.5 E-07122 Palma de Mallorca (Baleares) Spain
| | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Alberto Martinez-Cuezva
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
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10
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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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11
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Hoyas Pérez N, Sherin PS, Posligua V, Greenfield JL, Fuchter MJ, Jelfs KE, Kuimova MK, Lewis JEM. Emerging properties from mechanical tethering within a post-synthetically functionalised catenane scaffold. Chem Sci 2022; 13:11368-11375. [PMID: 36320581 PMCID: PMC9533469 DOI: 10.1039/d2sc04101d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/06/2022] [Indexed: 09/06/2024] Open
Abstract
Maintaining close spatial proximity of functional moieties within molecular systems can result in fascinating emergent properties. Whilst much work has been done on covalent tethering of functional units for myriad applications, investigations into mechanically linked systems are relatively rare. Formation of the mechanical bond is usually the final step in the synthesis of interlocked molecules, placing limits on the throughput of functionalised architectures. Herein we present the synthesis of a bis-azide [2]catenane scaffold that can be post-synthetically modified using CuAAC 'click' chemistry. In this manner we have been able to access functionalised catenanes from a common precursor and study the properties of electrochemically active, emissive and photodimerisable units within the mechanically interlocked system in comparison to non-interlocked analogues. Our data demonstrates that the greater (co-)conformational flexibility that can be obtained with mechanically interlocked systems compared to traditional covalent tethers paves the way for developing new functional molecules with exciting properties.
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Affiliation(s)
- Nadia Hoyas Pérez
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Peter S Sherin
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Victor Posligua
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Jake L Greenfield
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Matthew J Fuchter
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - Marina K Kuimova
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | - James E M Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
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12
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Saura-Sanmartin A. Photoresponsive Metal-Organic Frameworks as Adjustable Scaffolds in Reticular Chemistry. Int J Mol Sci 2022; 23:7121. [PMID: 35806126 PMCID: PMC9266399 DOI: 10.3390/ijms23137121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 02/04/2023] Open
Abstract
The easy and remote switching of light makes this stimulus an ideal candidate for a large number of applications, among which the preparation of photoresponsive materials stands out. The interest of several scientists in this area in order to achieve improved functionalities has increase parallel to the growth of the structural complexity of these materials. Thus, metal-organic frameworks (MOFs) turned out to be ideal scaffolds for light-responsive ligands. This review is focused on the integration of photoresponsive organic ligands inside MOF crystalline arrays to prepare enhanced functional materials. Besides the summary of the preparation, properties and applications of these materials, an overview of the future outlook of this research area is provided.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
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13
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Saura-Sanmartin A, Pastor A, Martinez-Cuezva A, Cutillas-Font G, Alajarin M, Berna J. Mechanically interlocked molecules in metal-organic frameworks. Chem Soc Rev 2022; 51:4949-4976. [PMID: 35612363 DOI: 10.1039/d2cs00167e] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanically interlocked molecules (MIMs) have great potential in the development of molecular machinery due to their intercomponent dynamics. The incorporation of these molecules in a condensed phase makes it possible to take advantage of the control of the motion of the components at the macroscopic level. Metal-organic frameworks (MOFs) are postulated as ideal supports for intertwined molecules. This review covers the chemistry of the mechanical bond incorporated into metal-organic frameworks from the seminal studies to the latest published advances. We first describe some fundamental concepts of MIMs and MOFs. Next, we summarize the advances in the incorporation of rotaxanes and catenanes inside MOF matrices. Finally, we conclude by showing the study of the rotaxane dynamics in MOFs and the operation of some stimuli-responsive MIMs within MOFs. In addition to emphasising some selected examples, we offer a critical opinion on the state of the art of this research field, remarking the key points on which the future of these systems should be focused.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Aurelia Pastor
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Guillermo Cutillas-Font
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
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14
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Tang Y, Luo Y, Xiang J, He Y, Fan Q. Rhodium‐Catalyzed ON‐OFF Switchable Hydrogenation Using a Molecular Shuttle Based on a [2]Rotaxane with a Phosphine Ligand. Angew Chem Int Ed Engl 2022; 61:e202200638. [DOI: 10.1002/anie.202200638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 12/18/2022]
Affiliation(s)
- Yu‐Ping Tang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yi‐Er Luo
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jun‐Feng Xiang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yan‐Mei He
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
| | - Qing‐Hua Fan
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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15
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Au-Yeung HY, Deng Y. Distinctive features and challenges in catenane chemistry. Chem Sci 2022; 13:3315-3334. [PMID: 35432874 PMCID: PMC8943846 DOI: 10.1039/d1sc05391d] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 02/04/2022] [Indexed: 11/21/2022] Open
Abstract
From being an aesthetic molecular object to a building block for the construction of molecular machines, catenanes and related mechanically interlocked molecules (MIMs) continue to attract immense interest in many research areas. Catenane chemistry is closely tied to that of rotaxanes and knots, and involves concepts like mechanical bonds, chemical topology and co-conformation that are unique to these molecules. Yet, because of their different topological structures and mechanical bond properties, there are some fundamental differences between the chemistry of catenanes and that of rotaxanes and knots although the boundary is sometimes blurred. Clearly distinguishing these differences, in aspects of bonding, structure, synthesis and properties, between catenanes and other MIMs is therefore of fundamental importance to understand their chemistry and explore the new opportunities from mechanical bonds.
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Affiliation(s)
- Ho Yu Au-Yeung
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
- State Key Laboratory of Synthetic Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Yulin Deng
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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Tang Y, Luo Y, Xiang J, He Y, Fan Q. Rhodium‐Catalyzed ON‐OFF Switchable Hydrogenation Using a Molecular Shuttle Based on a [2]Rotaxane with a Phosphine Ligand. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200638] [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)
- Yu‐Ping Tang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yi‐Er Luo
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jun‐Feng Xiang
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yan‐Mei He
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
| | - Qing‐Hua Fan
- Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences (CAS) Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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17
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Yao B, Sun H, Yang L, Wang S, Liu X. Recent Progress in Light-Driven Molecular Shuttles. Front Chem 2022; 9:832735. [PMID: 35186899 PMCID: PMC8847434 DOI: 10.3389/fchem.2021.832735] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 12/23/2021] [Indexed: 11/13/2022] Open
Abstract
Molecular shuttles are typical molecular machines that could be applied in various fields. The motion modes of wheel components in rotaxanes could be strategically modulated by external stimuli, such as pH, ions, solvent, light, and so on. Light is particularly attractive because it is harmless and can be operated in a remote mode and usually no byproducts are formed. Over the past decade, many examples of light-driven molecular shuttles are emerging. Accordingly, this review summarizes the recent research progress of light-driven molecular shuttles. First, the light-driven mechanisms of molecular motions with different functional groups are discussed in detail, which show how to drive photoresponsive or non-photoresponsive molecular shuttles. Subsequently, the practical applications of molecular shuttles in different fields, such as optical information storage, catalysis for organic reactions, drug delivery, and so on, are demonstrated. Finally, the future development of light-driven molecular shuttle is briefly prospected.
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18
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Heard AW, Suárez JM, Goldup SM. Controlling catalyst activity, chemoselectivity and stereoselectivity with the mechanical bond. Nat Rev Chem 2022; 6:182-196. [PMID: 37117433 DOI: 10.1038/s41570-021-00348-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2021] [Indexed: 12/16/2022]
Abstract
Mechanically interlocked molecules, such as rotaxanes and catenanes, are receiving increased attention as scaffolds for the development of new catalysts, driven by both their increasing accessibility and high-profile examples of the mechanical bond delivering desirable behaviours and properties. In this Review, we survey recent advances in the catalytic applications of mechanically interlocked molecules organized by the effect of the mechanical bond on key catalytic properties, namely, activity, chemoselectivity and stereoselectivity, and focus on how the mechanically bonded structure leads to the observed behaviour. Our aim is to inspire future investigations of mechanically interlocked catalysts, including those outside of the supramolecular community.
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19
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Rad N, Sashuk V. A light-gated regulation of the reaction site by a cucurbit[7]uril macrocycle. Chem Sci 2022; 13:12440-12444. [DOI: 10.1039/d2sc02077g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 10/10/2022] [Indexed: 11/21/2022] Open
Abstract
On–off competitive inhibition is presented. Photoswitchable pseudorotaxane controls the rate of self-reaction and product selectivity of external reactions.
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Affiliation(s)
- Nazar Rad
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Volodymyr Sashuk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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20
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David AHG, García–Cerezo P, Campaña AG, Santoyo–González F, Blanco V. Vinyl sulfonyl chemistry-driven unidirectional transport of a macrocycle through a [2]rotaxane. Org Chem Front 2022. [DOI: 10.1039/d1qo01491a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The pH- and chemically-driven unidirectional transport of a macrocycle through a [2]rotaxane based on the vinyl sulfonyl groups is reported.
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Affiliation(s)
- Arthur H. G. David
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avda. Fuente Nueva S/N, 18071 Granada, Spain
| | - Pablo García–Cerezo
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avda. Fuente Nueva S/N, 18071 Granada, Spain
| | - Araceli G. Campaña
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avda. Fuente Nueva S/N, 18071 Granada, Spain
| | - Francisco Santoyo–González
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avda. Fuente Nueva S/N, 18071 Granada, Spain
| | - Victor Blanco
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada (UGR), Avda. Fuente Nueva S/N, 18071 Granada, Spain
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21
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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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22
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Saura-Sanmartin A, Pastor A, Martinez-Cuezva A, Berna J. Maximizing the [ c2]daisy chain to lasso ratio through competitive self-templating clipping reactions. Chem Commun (Camb) 2021; 58:290-293. [PMID: 34881747 DOI: 10.1039/d1cc05942d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Self-templating two-component coupling reactions allowed the isolation of two threaded products with different molecular sizes: a lasso-type [1]rotaxane and a [c2]daisy chain rotaxane. Their distribution in the final reaction mixture varies as a factor of the concentration of the reactants. Through this methodology we obtained a large 84-membered cyclic multistation [2]rotaxane.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Aurelia Pastor
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, E-30100, Murcia, Spain.
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23
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24
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Olivo G, Capocasa G, Del Giudice D, Lanzalunga O, Di Stefano S. New horizons for catalysis disclosed by supramolecular chemistry. Chem Soc Rev 2021; 50:7681-7724. [PMID: 34008654 DOI: 10.1039/d1cs00175b] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The adoption of a supramolecular approach in catalysis promises to address a number of unmet challenges, ranging from activity (unlocking of novel reaction pathways) to selectivity (alteration of the innate selectivity of a reaction, e.g. selective functionalization of C-H bonds) and regulation (switch ON/OFF, sequential catalysis, etc.). Supramolecular tools such as reversible association and recognition, pre-organization of reactants and stabilization of transition states upon binding offer a unique chance to achieve the above goals disclosing new horizons whose potential is being increasingly recognized and used, sometimes reaching the degree of ripeness for practical use. This review summarizes the main developments that have opened such new frontiers, with the aim of providing a guide to researchers approaching the field. We focus on artificial supramolecular catalysts of defined stoichiometry which, under homogeneous conditions, unlock outcomes that are highly difficult if not impossible to attain otherwise, namely unnatural reactivity or selectivity and catalysis regulation. The different strategies recently explored in supramolecular catalysis are concisely presented, and, for each one, a single or very few examples is/are described (mainly last 10 years, with only milestone older works discussed). The subject is divided into four sections in light of the key design principle: (i) nanoconfinement of reactants, (ii) recognition-driven catalysis, (iii) catalysis regulation by molecular machines and (iv) processive catalysis.
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Affiliation(s)
- Giorgio Olivo
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Giorgio Capocasa
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Daniele Del Giudice
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", Dipartimento di Chimica and ISB-CNR Sede Secondaria di Roma - Meccanismi di Reazione, P.le A. Moro 5, I-00185 Rome, Italy.
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25
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Yu S, Kupryakov A, Lewis JEM, Martí-Centelles V, Goldup SM, Pozzo JL, Jonusauskas G, McClenaghan ND. Damming an electronic energy reservoir: ion-regulated electronic energy shuttling in a [2]rotaxane. Chem Sci 2021; 12:9196-9200. [PMID: 34276950 PMCID: PMC8261707 DOI: 10.1039/d1sc02225c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/04/2021] [Indexed: 12/14/2022] Open
Abstract
We demonstrate the first example of bidirectional reversible electronic energy transfer (REET) between the mechanically bonded components of a rotaxane. Our prototypical system was designed such that photoexcitation of a chromophore in the axle results in temporary storage of electronic energy in a quasi-isoenergetic “reservoir” chromophore in the macrocycle. Over time, the emissive state of the axle is repopulated from this reservoir, resulting in long-lived, delayed luminescence. Importantly, we show that cation binding in the cavity formed by the mechanical bond perturbs the axle chromophore energy levels, modulating the REET process, and ultimately providing a luminescence read-out of cation binding. Modulation of REET processes represents an unexplored mechanism in luminescent molecular sensor development. Delayed emission due to reversible electronic energy transfer (REET) between chromophores in the axle and macrocycle components of a rotaxane is demonstrated. The REET process can be modulated by metal ion binding in the cavity of the rotaxane.![]()
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Affiliation(s)
- Shilin Yu
- Institut des Sciences Moléculaires, University of Bordeaux/CNRS Talence France .,Department of Chemistry, University of Jyvaskyla 40014 Jyväskylä Finland
| | - Arkady Kupryakov
- Laboratoire Ondes et Matière d'Aquitaine, University of Bordeaux/CNRS Talence France
| | - James E M Lewis
- School of Chemistry, University of Southampton Highfield Southampton SO17 1BJ UK .,Department of Chemistry, Imperial College London, Molecular Sciences Research Hub 82 Wood Lane London W12 0BZ UK
| | | | - Stephen M Goldup
- School of Chemistry, University of Southampton Highfield Southampton SO17 1BJ UK
| | - Jean-Luc Pozzo
- Institut des Sciences Moléculaires, University of Bordeaux/CNRS Talence France
| | - Gediminas Jonusauskas
- Laboratoire Ondes et Matière d'Aquitaine, University of Bordeaux/CNRS Talence France
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26
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Gualandi L, Franchi P, Mezzina E, Goldup SM, Lucarini M. Spin-labelled mechanically interlocked molecules as models for the interpretation of biradical EPR spectra. Chem Sci 2021; 12:8385-8393. [PMID: 34221319 PMCID: PMC8221063 DOI: 10.1039/d1sc01462e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 05/14/2021] [Indexed: 12/20/2022] Open
Abstract
Biradical spin probes can provide detailed information about the distances between molecules/regions of molecules because the through-space coupling of radical centres, characterised by J, is strongly distance dependent. However, if the system can adopt multiple configurations, as is common in supramolecular complexes, the shape of the EPR spectrum is influenced not only by J but also the rate of exchange between different states. In practice, it is often hard to separate these variables and as a result, the effect of the latter is sometimes overlooked. To demonstrate this challenge unequivocally we synthesised rotaxane biradicals containing nitronyl nitroxide units at the termini of their axles. The rotaxanes exchange between the available biradical conformations more slowly than the corresponding non-interlocked axles but, despite this, in some cases, the EPR spectra of the axle and rotaxane remain remarkably similar. Detailed analysis allowed us to demonstrate that the similar EPR spectral shapes result from different combinations of J and rates of conformational interconversion, a phenomenon suggested theoretically more than 50 years ago. This work reinforces the idea that thorough analysis must be performed when interpreting the spectra of biradicals employed as spin probes in solution.
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Affiliation(s)
- Lorenzo Gualandi
- Department of Chemistry "Giacomo Ciamician", University of Bologna Via San Giacomo 11 Bologna Italy
| | - Paola Franchi
- Department of Chemistry "Giacomo Ciamician", University of Bologna Via San Giacomo 11 Bologna Italy
| | - Elisabetta Mezzina
- Department of Chemistry "Giacomo Ciamician", University of Bologna Via San Giacomo 11 Bologna Italy
| | - Stephen M Goldup
- Department of Chemistry, University of Southampton University Road, Highfield Southampton UK
| | - Marco Lucarini
- Department of Chemistry "Giacomo Ciamician", University of Bologna Via San Giacomo 11 Bologna Italy
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27
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Borsley S, Leigh DA, Roberts BMW. A Doubly Kinetically-Gated Information Ratchet Autonomously Driven by Carbodiimide Hydration. J Am Chem Soc 2021; 143:4414-4420. [DOI: 10.1021/jacs.1c01172] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Stefan Borsley
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - David A. Leigh
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Benjamin M. W. Roberts
- Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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28
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Sluysmans D, Lussis P, Fustin CA, Bertocco A, Leigh DA, Duwez AS. Real-Time Fluctuations in Single-Molecule Rotaxane Experiments Reveal an Intermediate Weak Binding State during Shuttling. J Am Chem Soc 2021; 143:2348-2352. [PMID: 33417442 DOI: 10.1021/jacs.0c12161] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report on the use of atomic force microscopy (AFM) to identify and characterize an intermediate state in macrocycle shuttling in a hydrogen bonded amide-based molecular shuttle. The [2]rotaxane consists of a benzylic amide macrocycle mechanically locked onto a thread that bears both fumaramide and succinic amide-ester sites, each of which can bind to the macrocycle through up to four intercomponent hydrogen bonds. Using AFM-based single-molecule force spectroscopy, we mechanically triggered the translocation of the ring between the two principal binding sites ("stations") on the axle. Equilibrium fluctuations reveal another interacting site involving the two oxygen atoms in the middle of the thread. We characterized the ring occupancy distribution over time, which confirms the intermediate in both shuttling directions. The study provides evidence of weak hydrogen bonds that are difficult to detect using other methods and shows how the composition of the thread can significantly influence the shuttling dynamics by slowing down the ring motion between the principal binding sites. More generally, the study illustrates the utility that single-molecule experiments, such as force spectroscopy, can offer for elucidating the structure and dynamics of synthetic molecular machines.
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Affiliation(s)
- Damien Sluysmans
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
| | - Perrine Lussis
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
| | - Charles-André Fustin
- Bio and Soft Matter Division (BSMA), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place L. Pasteur 1 and Croix du Sud 1, Louvain-la-Neuve B-1348, Belgium
| | - Andrea Bertocco
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - David A Leigh
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Anne-Sophie Duwez
- UR MolSys, University of Liege, Sart-Tilman, B6a, 4000 Liege, Belgium
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29
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Abstract
Mechanically interlocked molecules (MIMs) have gained attention in the field of catalysis due to their unique molecular properties. Central to MIMs, rotaxanes are highly promising and attractive supramolecular catalysts due to their unique three-dimensional structures and the flexibility of their subcomponents. This Minireview discusses the use of rotaxanes in organocatalysis and transition-metal catalysis.
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Affiliation(s)
- Carel Kwamen
- Faculty of ChemistryOrganic Chemistry and Center for NanointegrationDuisburg- Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 745141EssenGermany
| | - Jochen Niemeyer
- Faculty of ChemistryOrganic Chemistry and Center for NanointegrationDuisburg- Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 745141EssenGermany
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30
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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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31
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Kassem S, Lee ATL, Leigh DA, Markevicius A, Tetlow DJ, Toriumi N. Site-to-site peptide transport on a molecular platform using a small-molecule robotic arm. Chem Sci 2020; 12:2065-2070. [PMID: 34163969 PMCID: PMC8179245 DOI: 10.1039/d0sc05906d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Peptides attached to a cysteine hydrazide ‘transporter module’ are transported selectively in either direction between two chemically similar sites on a molecular platform, enabled by the discovery of new operating methods for a molecular transporter that functions through ratcheting. Substrate repositioning is achieved using a small-molecule robotic arm controlled by a protonation-mediated rotary switch and attachment/release dynamic covalent chemistry. A polar solvent mixtures were found to favour Z to E isomerization of the doubly-protonated switch, transporting cargo in one direction (arbitrarily defined as ‘forward’) in up to 85% yield, while polar solvent mixtures were unexpectedly found to favour E to Z isomerization enabling transport in the reverse (‘backward’) direction in >98% yield. Transport of the substrates proceeded in a matter of hours (compared to 6 days even for simple cargoes with the original system) without the peptides at any time dissociating from the machine nor exchanging with others in the bulk. Under the new operating conditions, key intermediates of the switch are sufficiently stabilized within the macrocycle formed between switch, arm, substrate and platform that they can be identified and structurally characterized by 1H NMR. The size of the peptide cargo has no significant effect on the rate or efficiency of transport in either direction. The new operating conditions allow detailed physical organic chemistry of the ratcheted transport mechanism to be uncovered, improve efficiency, and enable the transport of more complex cargoes than was previously possible. Peptides are transported in either direction between chemically similar sites on a molecular platform, substrate repositioning is achieved using a cysteine hydrazide transporter module and a small-molecule robotic arm controlled by a rotary switch.![]()
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Affiliation(s)
- Salma Kassem
- Department of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Alan T L Lee
- Department of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | - David A Leigh
- Department of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | | | - Daniel J Tetlow
- Department of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
| | - Naoyuki Toriumi
- Department of Chemistry, University of Manchester Oxford Road Manchester M13 9PL UK
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32
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Martinez-Cuezva A, Pastor A, Marin-Luna M, Diaz-Marin C, Bautista D, Alajarin M, Berna J. Cyclization of interlocked fumaramides into β-lactams: experimental and computational mechanistic assessment of the key intercomponent proton transfer and the stereocontrolling active pocket. Chem Sci 2020; 12:747-756. [PMID: 34163808 PMCID: PMC8178992 DOI: 10.1039/d0sc05757f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
A detailed mechanistic study of the diastereoselective CsOH-promoted cyclization of interlocked fumaramides to give β-lactams is described. The mechanistic analysis comprises the experimental evaluation of the structure-reactivity relationship for a wide range of fumaramides [2]rotaxanes (Hammet-plots), KIE studies with deuterium-labelled interlocked fumaramides and computational analysis of two alternative mechanistic pathways for the cyclization process. The obtained results confirm that: (a) the rate-determining step is the deprotonation of the N-benzyl group of the thread by the amidate group of the macrocycle generated by the external base, (b) the polyamide macrocycle plays an important role not only as activating element but also as the stereodifferenciating factor responsible for the observed diastereoselection and (c) the higher flexibility of the adamantyl core speeds up the cyclization process in diadamantyl-derived rotaxanes. A mechanistic study of the diastereoselective cyclization of interlocked fumaramides to give β-lactams unveils the key factors for successfully taming the process.![]()
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Affiliation(s)
- Alberto Martinez-Cuezva
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Aurelia Pastor
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Marta Marin-Luna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Carmen Diaz-Marin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | | | - Mateo Alajarin
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
| | - Jose Berna
- Department of Organic Chemistry, Faculty of Chemistry, University of Murcia, Regional Campus of International Excellence "Campus Mare Nostrum" 30100 Murcia Spain
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33
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Cheng SC, Wang CH, Lin YC, Tsuchido Y, Suzaki Y, Sei Y, Kuo TS, Horie M. Photoinduced Mechanical Motions of Pseudorotaxane Crystals Composed of Azobenzene and Ferrocenyl Groups on an Axle and a Crown Ether Ring. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50002-50010. [PMID: 33089689 DOI: 10.1021/acsami.0c15171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
This work describes the design and characterization of photoresponsive dynamic pseudorotaxane crystals composed of azobenzene and ferrocenyl groups in an ammonium cation axle component threaded through dibenzo[24]crown-8 ether rings. Pseudorotaxanes provide flexibility for cis and trans isomerization of azobenzene groups in a crystal state, enabling reversible bending motions under alternating 360 and 445 nm laser irradiation. For such bending motions, strained azobenzene structures were essential; these motifs were obtained by increasing the bulkiness of the substituents on the axle and ring molecules. In addition, the crystals showed photosalient effects, such as jumping motions, under 445 nm laser irradiation. These motions were assisted by the photoabsorption of the ferrocenyl group, which converted 445 nm laser light into heat. The maximum lifting weight accompanied by the photoinduced mechanical motion of a particular crystal was estimated to be 9600 times the crystal weight. These pseudorotaxane crystals exhibit promising features for applications in micro-nanometer-sized miniature mechanical devices.
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Affiliation(s)
- Shao-Chi Cheng
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
| | - Chi-Hsien Wang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
| | - Yi-Chia Lin
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
| | - Yoshitaka Tsuchido
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Yuji Suzaki
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Yoshihisa Sei
- Open Facility Center, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Ting-Shen Kuo
- Department of Chemistry, National Normal University, No. 88, Section 4, Tingzhou Road, Taipei 11677, Taiwan
| | - Masaki Horie
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
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34
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Zhu L, Li J, Yang J, Au-Yeung HY. Cross dehydrogenative C-O coupling catalysed by a catenane-coordinated copper(i). Chem Sci 2020; 11:13008-13014. [PMID: 34094485 PMCID: PMC8163234 DOI: 10.1039/d0sc05133k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Catalytic activity of copper(i) complexes supported by phenanthroline-containing catenane ligands towards a new C(sp3)–O dehydrogenative cross-coupling of phenols and bromodicarbonyls is reported. As the phenanthrolines are interlocked by the strong and flexible mechanical bond in the catenane, the active catalyst with an open copper coordination site can be revealed only transiently and the stable, coordinatively saturated Cu(i) pre-catalyst is quickly regenerated after substrate transformation. Compared with a control Cu(i) complex supported by non-interlocked phenanthrolines, the catenane-supported Cu(i) is highly efficient with a broad substrate scope, and can be applied in gram-scale transformations without a significant loss of the catalytic activity. This work demonstrates the advantages of the catenane ligands that provide a dynamic and responsive copper coordination sphere, highlighting the potential of the mechanical bond as a design element in transition metal catalyst development. The use of a catenane-supported copper(i) complex for the cross dehydrogenative C–O coupling of phenols and bromodicarbonyls is described.![]()
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Affiliation(s)
- Lihui Zhu
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Jiasheng Li
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Jun Yang
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
| | - Ho Yu Au-Yeung
- Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China .,State Key Laboratory of Synthetic Chemistry, The University of Hong Kong Pokfulam Road Hong Kong P. R. China
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35
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Saura-Sanmartin A, Martinez-Cuezva A, Bautista D, Marzari MRB, Martins MAP, Alajarin M, Berna J. Copper-Linked Rotaxanes for the Building of Photoresponsive Metal Organic Frameworks with Controlled Cargo Delivery. J Am Chem Soc 2020; 142:13442-13449. [PMID: 32646211 DOI: 10.1021/jacs.0c04477] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We have prepared a photoresponsive metal-organic framework by using an amide-based [2]rotaxane as linker and copper(II) ions as metal nodes. The interlocked linker was obtained by the hydrogen bond-directed approach employing a fumaramide thread as template of the macrocyclic component, this latter incorporating two carboxyl groups. Single crystal X-ray diffraction analysis of the metal-organic framework, prepared under solvothermal conditions, showed the formation of stacked 2D rhombohedral grids forming channels decorated with the interlocked alkenyl threads. A series of metal-organic frameworks differing in the E/Z olefin ratio were prepared either by the previous isomerization of the linker or by postirradiation of the reticulated materials. By dynamic solid state 2H NMR measurements, using deuterium-labeled materials, we proved that the geometry of the olefinic axis of the interlocked struts determined the obtention of materials with different independent local dynamics as a result of the strength of the intercomponent noncovalent interactions. Moreover, the usefulness of these novel copper-rotaxane materials as molecular dosing containers has also been assayed by the diffusion and photorelease of p-benzoquinone, evaluated in different solvents and temperatures.
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Affiliation(s)
- Adrian Saura-Sanmartin
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Alberto Martinez-Cuezva
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Delia Bautista
- Seccion Universitaria de Instrumentacion Cientifica (SUIC), Area Científica y Tecnica de Investigacion (ACTI), Universidad de Murcia, Murcia E-30100, Spain
| | - Mara R B Marzari
- Nucleo de Quimica de Heterociclos (NUQUIMHE), Departamento de Quimica, Universidad Federal de Santa Maria, Santa Maria-RS 97105-900, Brazil
| | - Marcos A P Martins
- Nucleo de Quimica de Heterociclos (NUQUIMHE), Departamento de Quimica, Universidad Federal de Santa Maria, Santa Maria-RS 97105-900, Brazil
| | - Mateo Alajarin
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
| | - Jose Berna
- Departamento de Quimica Organica, Facultad de Quimica, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia, Murcia E-30100, Spain
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36
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Martinez-Cuezva A, Saura-Sanmartin A, Alajarin M, Berna J. Mechanically Interlocked Catalysts for Asymmetric Synthesis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02032] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Adrian Saura-Sanmartin
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Mateo Alajarin
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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37
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Kauerhof D, Niemeyer J. Functionalized Macrocycles in Supramolecular Organocatalysis. Chempluschem 2020; 85:889-899. [PMID: 32391655 DOI: 10.1002/cplu.202000152] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/26/2020] [Indexed: 01/18/2023]
Abstract
Supramolecular organocatalysis has emerged as a novel research field in the context of homogeneous catalysis. In particular, the use of functionalized macrocycles as supramolecular catalysts is highly promising, as these systems are oftentimes easily accessible and offer distinct advantages in catalysis. Macrocyclic catalysts can provide defined binding pockets, such as hydrophobic cavities, and can thus create a reaction microenvironment for catalysis. In addition, macrocycles can offer a preorganized arrangement of functional groups, such as binding sites or catalytically active groups, thus enabling a defined and possibly multivalent binding and activation of substrates. The aim of this Minireview is to provide an overview of recent advances in the area of supramolecular organocatalysis based on functionalized macrocycles (including cyclodextrins, calixarenes, and resorcinarenes), with a focus on those examples where certain catalytically active groups (such as hydrogen bond donors/acceptors, Brønsted acid or base groups, or nucleophilic units) are present in or have been installed on the macrocycles.
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Affiliation(s)
- Dana Kauerhof
- Faculty of Chemistry (Organic Chemistry) and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstr. 7, 45141, Essen, Germany
| | - Jochen Niemeyer
- Faculty of Chemistry (Organic Chemistry) and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstr. 7, 45141, Essen, Germany
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38
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Calles M, Puigcerver J, Alonso DA, Alajarin M, Martinez-Cuezva A, Berna J. Enhancing the selectivity of prolinamide organocatalysts using the mechanical bond in [2]rotaxanes. Chem Sci 2020; 11:3629-3635. [PMID: 34094051 PMCID: PMC8152698 DOI: 10.1039/d0sc00444h] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/10/2020] [Indexed: 11/21/2022] Open
Abstract
The synthesis of a pair of switchable interlocked prolinamides and their use as organocatalysts in three different enamine-activated processes are reported. A diacylaminopyridine moiety was incorporated into the thread for directing [2]rotaxane formation further allowing the association of complementary small molecules. The rotaxane-based systems were tested as organocatalysts in asymmetric enamine-mediated processes, revealing a significantly improved catalytic ability if compared with the non-interlocked thread. The presence of an electron-withdrawing nitro group at the macrocycle helps to achieve high conversions and enantioselectivities. These systems are able to interact with N-hexylthymine as a cofactor to form supramolecular catalysts displaying a divergent catalytic behaviour. The presence or absence of the cofactor controls the chemoselectivity in competitive reactions.
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Affiliation(s)
- María Calles
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Julio Puigcerver
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Diego A Alonso
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante E-03080 Alicante Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia E-30100 Murcia Spain
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39
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Theoretical investigation on rotaxanes containing a pyridyl-acyl hydrazone moiety: chemical Z → E and photochemical E → Z isomerizations. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-2553-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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40
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Nakamura T, Mori Y, Naito M, Okuma Y, Miyagawa S, Takaya H, Kawasaki T, Tokunaga Y. Rotaxanes comprising cyclic phenylenedioxydiacetamides and secondary mono- and bis-dialkylammonium ions: effect of macrocyclic ring size on pseudorotaxane formation. Org Chem Front 2020. [DOI: 10.1039/c9qo01359h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[2]Rotaxanes, stabilized through multiple and cooperative hydrogen bonding system, were synthesized from dialkylammonium ions and macrocycle possessing two phenylenedioxydiacetamide units and appropriate spacers.
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Affiliation(s)
- Takanori Nakamura
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Yuka Mori
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Masaya Naito
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Yukari Okuma
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Shinobu Miyagawa
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Hikaru Takaya
- International Research Center for Elements Science
- Institute for Chemical Research
- Kyoto University
- Uji 611-0011
- Japan
| | - Tsuneomi Kawasaki
- Department of Applied Chemistry
- Tokyo University of Science
- Tokyo 162-8601
- Japan
| | - Yuji Tokunaga
- Department of Materials Science and Engineering
- Faculty of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
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41
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Dommaschk M, Echavarren J, Leigh DA, Marcos V, Singleton TA. Dynamic Control of Chiral Space Through Local Symmetry Breaking in a Rotaxane Organocatalyst. Angew Chem Int Ed Engl 2019; 58:14955-14958. [PMID: 31454135 DOI: 10.1002/anie.201908330] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Indexed: 12/21/2022]
Abstract
We report on a switchable rotaxane molecular shuttle that features a pseudo-meso 2,5-disubstituted pyrrolidine catalytic unit on the axle whose local symmetry is broken according to the position of a threaded benzylic amide macrocycle. The macrocycle can be selectively switched (with light in one direction; with catalytic acid in the other) with high fidelity between binding sites located to either side of the pyrrolidine unit. The position of the macrocycle dictates the facial bias of the rotaxane-catalyzed conjugate addition of aldehydes to vinyl sulfones. The pseudo-meso non-interlocked thread does not afford significant selectivity as a catalyst (2-14 % ee), whereas the rotaxane affords selectivities of up to 40 % ee with switching of the position of the macrocycle changing the handedness of the product formed (up to 60 % Δee).
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Affiliation(s)
- Marcel Dommaschk
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Javier Echavarren
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David A Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Vanesa Marcos
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Thomas A Singleton
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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42
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Dommaschk M, Echavarren J, Leigh DA, Marcos V, Singleton TA. Dynamic Control of Chiral Space Through Local Symmetry Breaking in a Rotaxane Organocatalyst. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908330] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marcel Dommaschk
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Javier Echavarren
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - David A. Leigh
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Vanesa Marcos
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
| | - Thomas A. Singleton
- School of Chemistry University of Manchester Oxford Road Manchester M13 9PL UK
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43
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Huang C, Li G, Zhang L, Zhang Y, Mi L, Hou H. Reversible Structural Transformations of Metal-Organic Frameworks as Artificial Switchable Catalysts for Dynamic Control of Selectively Cyanation Reaction. Chemistry 2019; 25:10366-10374. [PMID: 31044467 DOI: 10.1002/chem.201901118] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/15/2019] [Indexed: 01/04/2023]
Abstract
The synthesis of molecular-level artificial switchable catalysts, of which activity in different chemical processes can be switched by controlling different stimuli, has provided a new paradigm to perform mechanical tasks and measurable work. In this work, to obtain highly effective and regioselective artificial switchable catalysts, a hierarchical anion-pillared framework {(H3 O)[Cu(CPCDC)(4,4'-bpy)]}n (1; H3 CPCDC=9-(4-carboxyphenyl)-9H-carbazole-3,6-dicarboxylic acid, 4,4'-bpy=4,4'-bipyridine), including free [H3 O]+ ions as guest molecules, was constructed. Upon dissolve-exchange-crystallization behavior, fascinating reversible structural transformations proceeded between anion framework 1 and neutral 2D stair-stepping framework {[Cu(CPCDC)(4,4'-bpe)]}n (2; 4,4'-bpe=4,4'-vinylenedipyridine). Moreover, frameworks 1 and 2 can act as heterogeneous artificial switchable catalysts to selectively promote the direct cyanation reaction of terminal alkynes and azobisisobutyronitrile. The results indicated that 1 and 2 exhibited excellent selectivity to generate vinyl isobutyronitrile skeletons or propiolonitrile frameworks, respectively, as unique products. Furthermore, indicating paper, GC-MS, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis demonstrated that the reversible structural transformations endowed 1 and 2 with well-defined platforms to stabilize the isobutyronitrile and CN sources through the different catalytic pathways.
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Affiliation(s)
- Chao Huang
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China
| | - Gaoxiang Li
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China
| | - Lin Zhang
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China
| | - Yingying Zhang
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China
| | - Liwei Mi
- Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China
| | - Hongwei Hou
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, 450052, P.R. China
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44
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Martinez-Cuezva A, Marin-Luna M, Alonso DA, Ros-Ñiguez D, Alajarin M, Berna J. Interlocking the Catalyst: Thread versus Rotaxane-Mediated Enantiodivergent Michael Addition of Ketones to β-Nitrostyrene. Org Lett 2019; 21:5192-5196. [DOI: 10.1021/acs.orglett.9b01791] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Marta Marin-Luna
- Departamento de Química Orgánica, Universidade de Vigo, Campus Lagoas-Marcosende, E-36310 Vigo, Spain
| | - Diego A. Alonso
- Departamento Química Orgánica e Instituto de Síntesis Orgánica, Facultad de Ciencias, Universidad de Alicante, E-03080 Alicante, Spain
| | - Diego Ros-Ñiguez
- Departamento Química Orgánica e Instituto de Síntesis Orgánica, Facultad de Ciencias, Universidad de Alicante, E-03080 Alicante, Spain
| | - Mateo Alajarin
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
| | - Jose Berna
- Departamento de Química Orgánica, Facultad de Química, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, E-30100 Murcia, Spain
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45
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Baggi G, Casimiro L, Baroncini M, Silvi S, Credi A, Loeb SJ. Threading-gated photochromism in [2]pseudorotaxanes. Chem Sci 2019; 10:5104-5113. [PMID: 31183062 PMCID: PMC6524668 DOI: 10.1039/c9sc00913b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 04/08/2019] [Indexed: 11/21/2022] Open
Abstract
Rigid, Y-shaped imidazole compounds containing the bis(thienyl)ethene moiety were designed and synthesized. The 4,5-bis(benzothienyl)-2-phenylimidazolium cations were then used as axles for [2]pseudorotaxane formation with 24-membered crown ether wheels. It was demonstrated using 1H NMR spectroscopy, UV-Vis absorption and emission spectroscopies that this host-guest interaction results in significant changes in the photochromic properties of the imidazolium axles. This is a rare example of gated photochromism, which exploits the recognition event of an interpenetrated molecular system to tune the photochromic properties in one of the components.
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Affiliation(s)
- Giorgio Baggi
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , ON N9B 3P4 , Canada .
| | - Lorenzo Casimiro
- Dipartimento di Chimica "G. Ciamician" , Università di Bologna , 40126 Bologna , Italy .
- CLAN-Center for Light Activated Nanostructures , Università di Bologna , Consiglio Nazionale delle Ricerche , 40129 Bologna , Italy
| | - Massimo Baroncini
- Dipartimento di Scienze e Tecnologie Agro-alimentari , Università di Bologna , 40127 Bologna , Italy
- CLAN-Center for Light Activated Nanostructures , Università di Bologna , Consiglio Nazionale delle Ricerche , 40129 Bologna , Italy
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician" , Università di Bologna , 40126 Bologna , Italy .
- CLAN-Center for Light Activated Nanostructures , Università di Bologna , Consiglio Nazionale delle Ricerche , 40129 Bologna , Italy
| | - Alberto Credi
- Dipartimento di Scienze e Tecnologie Agro-alimentari , Università di Bologna , 40127 Bologna , Italy
- CLAN-Center for Light Activated Nanostructures , Università di Bologna , Consiglio Nazionale delle Ricerche , 40129 Bologna , Italy
| | - Stephen J Loeb
- Department of Chemistry and Biochemistry , University of Windsor , Windsor , ON N9B 3P4 , Canada .
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46
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Yu S, McClenaghan ND, Pozzo JL. Photochromic rotaxanes and pseudorotaxanes. Photochem Photobiol Sci 2019; 18:2102-2111. [PMID: 30907909 DOI: 10.1039/c9pp00057g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Among stimulus-responsive molecular ring-on-thread rotaxanes and pseudorotaxanes, variants incorporating photochromic sub-units are attracting considerable attention as their properties and structure can be remotely and precisely controlled, additionally without producing chemical waste. The focus herein is on photoswitching-driven assembly/disassembly and modulation of properties resulting from light-activated isomerization or changes in electronic properties.
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Affiliation(s)
- Shilin Yu
- CNRS/Univ. Bordeaux, Institut des Sciences Moléculaires, Talence, France.
| | | | - Jean-Luc Pozzo
- CNRS/Univ. Bordeaux, Institut des Sciences Moléculaires, Talence, France.
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47
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Modicom F, Jamieson EMG, Rochette E, Goldup SM. Chemical Consequences of the Mechanical Bond: A Tandem Active Template-Rearrangement Reaction. Angew Chem Int Ed Engl 2019; 58:3875-3879. [PMID: 30600892 PMCID: PMC6589916 DOI: 10.1002/anie.201813950] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Indexed: 01/07/2023]
Abstract
We report the unexpected discovery of a tandem active template CuAAC-rearrangement process, in which N2 is extruded on the way to the 1,2,3-triazole product to give instead acrylamide rotaxanes. Mechanistic investigations suggest this process is dictated by the mechanical bond, which stabilizes the CuI -triazolide intermediate of the CuAAC reaction and diverts it down the rearrangement pathway; when no mechanical bond is formed, the CuAAC product is isolated.
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Affiliation(s)
- Florian Modicom
- ChemistryUniversity of Southampton, HighfieldSouthamptonSO17 1BJUK
| | | | - Elise Rochette
- ChemistryUniversity of Southampton, HighfieldSouthamptonSO17 1BJUK
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48
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Evans NH. Recent Advances in the Synthesis and Application of Hydrogen Bond Templated Rotaxanes and Catenanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900081] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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49
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Martinez-Cuezva A, Morales F, Marley GR, Lopez-Lopez A, Martinez-Costa JC, Bautista D, Alajarin M, Berna J. Thermally and Photochemically Induced Dethreading of Fumaramide-Based Kinetically Stable Pseudo[2]rotaxanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900073] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alberto Martinez-Cuezva
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Fatima Morales
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Grace R. Marley
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Adrian Lopez-Lopez
- Departamento de Química Orgánica; Facultad de Química; Regional Campus of International Excellence “Campus Mare Nostrum”; Universidad de Murcia; 30100 Murcia Spain
| | - Juan Carlos Martinez-Costa
- 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
| | - 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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50
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Modicom F, Jamieson EMG, Rochette E, Goldup SM. Chemical Consequences of the Mechanical Bond: A Tandem Active Template‐Rearrangement Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813950] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Florian Modicom
- ChemistryUniversity of Southampton, Highfield Southampton SO17 1BJ UK
| | | | - Elise Rochette
- ChemistryUniversity of Southampton, Highfield Southampton SO17 1BJ UK
| | - Stephen M. Goldup
- ChemistryUniversity of Southampton, Highfield Southampton SO17 1BJ UK
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