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Parmar U, Somvanshi D, Kori S, Desai AA, Dandela R, Maity DK, Kapdi AR. Room-Temperature Amination of Chloroheteroarenes in Water by a Recyclable Copper(II)-Phosphaadamantanium Sulfonate System. J Org Chem 2021; 86:8900-8925. [PMID: 34156851 DOI: 10.1021/acs.joc.1c00845] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Buchwald-Hartwig amination of chloroheteroarenes has been a challenging synthetic process, with very few protocols promoting this important transformation at ambient temperature. The current report discusses about an efficient copper-based catalytic system (Cu/PTABS) for the amination of chloroheteroarenes at ambient temperature in water as the sole reaction solvent, a combination that is first to be reported. A wide variety of chloroheteroarenes could be coupled efficiently with primary and secondary amines as well as selected amino acid esters under mild reaction conditions. Catalytic efficiency of the developed protocol also promotes late-stage functionalization of active pharmaceutical ingredients (APIs) such as antibiotics (floxacins) and anticancer drugs. The catalytic system also performs efficiently at a very low concentration of 0.0001 mol % (TON = 980,000) and can be recycled 12 times without any appreciable loss in activity. Theoretical calculations reveal that the π-acceptor ability of the ligand PTABS is the main reason for the appreciably high reactivity of the catalytic system. Preliminary characterization of the catalytic species in the reaction was carried out using UV-VIS and ESR spectroscopy, providing evidence for the Cu(II) oxidation state.
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Affiliation(s)
- Udaysinh Parmar
- Aether Industries Limited, B-21/7, Hojiwala Industrial Estate, Sachin, Surat 394230, Gujarat, India
| | - Dipesh Somvanshi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
| | - Santosh Kori
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Odisha Campus, IIT Khragpur extension Centre, Mouza Samantpuri, Bhubaneswar 751013, Odisha, India
| | - Aman A Desai
- Aether Industries Limited, B-21/7, Hojiwala Industrial Estate, Sachin, Surat 394230, Gujarat, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Odisha Campus, IIT Khragpur extension Centre, Mouza Samantpuri, Bhubaneswar 751013, Odisha, India
| | - Dilip K Maity
- Chemical Sciences, Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Chemical Sciences, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Anant R Kapdi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
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2
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Knighton RC, Beer PD. Sodium cation-templated synthesis of an ion-pair binding heteroditopic [2]catenane. Org Chem Front 2021. [DOI: 10.1039/d1qo00247c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel method utilising sodium cation templation between a pyridinium bridged calix[4]diquinone macrocycle and a pyridine-N-oxide functionalised macrocycle precursor motif is used for the construction of a mechanically interlocked ion-pair.
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Affiliation(s)
- Richard C. Knighton
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Paul D. Beer
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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3
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Knighton RC, Dapin S, Beer PD. Luminescent Anion Sensing by Transition-Metal Dipyridylbenzene Complexes Incorporated into Acyclic, Macrocyclic and Interlocked Hosts. Chemistry 2020; 26:5288-5296. [PMID: 32130744 PMCID: PMC7216984 DOI: 10.1002/chem.202000661] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 12/19/2022]
Abstract
A series of novel acyclic, macrocyclic and mechanically interlocked luminescent anion sensors have been prepared by incorporation of the isophthalamide motif into dipyridylbenzene to obtain cyclometallated complexes of platinum(II) and ruthenium(II). Both the acyclic and macrocyclic derivatives 7⋅Pt, 7⋅Ru⋅PF6 , 10⋅Pt and 10⋅Ru⋅PF6 are effective sensors for a range of halides and oxoanions. The near-infra red emitting ruthenium congeners exhibited an increased binding strength compared to platinum due to the cationic charge and thus additional electrostatic interactions. Intramolecular hydrogen-bonding between the dipyridylbenzene ligand and the amide carbonyls increases the preorganisation of both acyclic and macrocyclic metal derivatives resulting in no discernible macrocyclic effect. Interlocked analogues were also prepared, and preliminary luminescent chloride anion spectrometric titrations with 12⋅Ru⋅(PF6 )2 demonstrate a marked increase in halide binding affinity due to the complementary chloride binding pocket of the [2]rotaxane. 1 H NMR binding titrations indicate the interlocked dicationic receptor is capable of chloride recognition even in competitive 30 % aqueous mixtures.
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Affiliation(s)
| | - Sophie Dapin
- Department of ChemistryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Paul D. Beer
- Department of ChemistryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
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4
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Klein HA, Beer PD. Iodide Discrimination by Tetra-Iodotriazole Halogen Bonding Interlocked Hosts. Chemistry 2019; 25:3125-3130. [PMID: 30624821 DOI: 10.1002/chem.201806093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/08/2019] [Indexed: 11/09/2022]
Abstract
Whilst the exploitation of interlocked host frameworks for anion recognition is widely established, examples incorporating halogen bond donor groups are still relatively rare. Through the integration of a novel tetra(iodotriazole)-pyridinium motif into macrocycle and axle components, a family of halogen bonding catenane and rotaxanes are constructed for anion recognition studies in a competitive aqueous-organic solvent mixture. Importantly, the degree of anion selectivity displayed is dictated by the topological nature and charged state of the respective interlocked host cavity. All the interlocked hosts exhibit iodide anion selectivity over other halides and sulfate, with the level of discrimination being the greatest with the mono-cationic rotaxane. Arising from greater electrostatic interactions working in tandem with halogen bonding and hydrogen bonding, the di-cationic rotaxane displays stronger anion association at the expense of a relatively lower degree of iodide selectivity.
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Affiliation(s)
- Harry A Klein
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Paul D Beer
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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5
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Aletti AB, Gillen DM, Gunnlaugsson T. Luminescent/colorimetric probes and (chemo-) sensors for detecting anions based on transition and lanthanide ion receptor/binding complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.06.020] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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6
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Brown A, Langton MJ, Kilah NL, Thompson AL, Beer PD. Chloride-Anion-Templated Synthesis of a Strapped-Porphyrin-Containing Catenane Host System. Chemistry 2015; 21:17664-75. [PMID: 26508679 PMCID: PMC4691337 DOI: 10.1002/chem.201502721] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 09/10/2015] [Indexed: 01/19/2023]
Abstract
The synthesis, structure and anion-recognition properties of a new strapped-porphyrin-containing [2]catenane anion host system are described. The assembly of the catenane is directed by discrete chloride anion templation acting in synergy with secondary aromatic donor-acceptor and coordinative pyridine-zinc interactions. The [2]catenane incorporates a three-dimensional, hydrogen-bond-donating anion-binding pocket; solid-state structural analysis of the catenane⋅chloride complex reveals that the chloride anion is encapsulated within the catenane's interlocked binding cavity through six convergent CH⋅⋅⋅⋅Cl and NH⋅⋅⋅Cl hydrogen-bonding interactions and solution-phase (1) H NMR titration experiments demonstrate that this complementary hydrogen-bonding arrangement facilitates the selective recognition of chloride over larger halide anions in DMSO solution.
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Affiliation(s)
- Asha Brown
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Matthew J Langton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Nathan L Kilah
- School of Physical Sciences - Chemistry, University of Tasmania, Hobart, Tasmania, 7001 (Australia)
| | - Amber L Thompson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Paul D Beer
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK).
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7
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Tepper R, Schulze B, Jäger M, Friebe C, Scharf DH, Görls H, Schubert US. Anion Receptors Based on Halogen Bonding with Halo-1,2,3-triazoliums. J Org Chem 2015; 80:3139-50. [DOI: 10.1021/acs.joc.5b00028] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ronny Tepper
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena
Center for Soft Matters (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Benjamin Schulze
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena
Center for Soft Matters (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Michael Jäger
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena
Center for Soft Matters (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Christian Friebe
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena
Center for Soft Matters (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Daniel H. Scharf
- Leibniz Institute for Natural Product Research and Infection Biology − Hans Knöll Institute, Beutenbergstr. 11a, 07745 Jena, Germany
| | - Helmar Görls
- Laboratory
of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Lessingstr. 8, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena
Center for Soft Matters (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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8
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Caballero A, Swan L, Zapata F, Beer PD. Iodide-Induced Shuttling of a Halogen- and Hydrogen-Bonding Two-Station Rotaxane. Angew Chem Int Ed Engl 2014; 53:11854-8. [DOI: 10.1002/anie.201407580] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/20/2014] [Indexed: 01/12/2023]
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9
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Iodide-Induced Shuttling of a Halogen- and Hydrogen-Bonding Two-Station Rotaxane. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407580] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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10
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Evans NH, Beer PD. Advances in anion supramolecular chemistry: from recognition to chemical applications. Angew Chem Int Ed Engl 2014; 53:11716-54. [PMID: 25204549 DOI: 10.1002/anie.201309937] [Citation(s) in RCA: 425] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Indexed: 12/11/2022]
Abstract
Since the start of this millennium, remarkable progress in the binding and sensing of anions has been taking place, driven in part by discoveries in the use of hydrogen bonding, as well as the previously under-exploited anion-π interactions and halogen bonding. However, anion supramolecular chemistry has developed substantially beyond anion recognition, and now encompasses a diverse range of disciplines. Dramatic advance has been made in the anion-templated synthesis of macrocycles and interlocked molecular architectures, while the study of transmembrane anion transporters has flourished from almost nothing into a rapidly maturing field of research. The supramolecular chemistry of anions has also found real practical use in a variety of applications such as catalysis, ion extraction, and the use of anions as stimuli for responsive chemical systems.
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Affiliation(s)
- Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB (UK).
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11
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Evans NH, Beer PD. Supramolekulare Chemie von Anionen: von der Erkennung zur chemischen Anwendung. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309937] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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12
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Langton MJ, Beer PD. Rotaxane and catenane host structures for sensing charged guest species. Acc Chem Res 2014; 47:1935-49. [PMID: 24708030 DOI: 10.1021/ar500012a] [Citation(s) in RCA: 210] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
CONSPECTUS: The promise of mechanically interlocked architectures, such as rotaxanes and catenanes, as prototypical molecular switches and shuttles for nanotechnological applications, has stimulated an ever increasing interest in their synthesis and function. The elaborate host cavities of interlocked structures, however, can also offer a novel approach toward molecular recognition: this Account describes the use of rotaxane and catenane host systems for binding charged guest species, and for providing sensing capability through an integrated optical or electrochemical reporter group. Particular attention is drawn to the exploitation of the unusual dynamic properties of interlocked molecules, such as guest-induced shuttling or conformational switching, as a sophisticated means of achieving a selective and functional sensor response. We initially survey interlocked host systems capable of sensing cationic guests, before focusing on our accomplishments in synthesizing rotaxanes and catenanes designed for the more challenging task of selective anion sensing. In our group, we have developed the use of discrete anionic templation to prepare mechanically interlocked structures for anion recognition applications. Removal of the anion template reveals an interlocked host system, possessing a unique three-dimensional geometrically restrained binding cavity formed between the interlocked components, which exhibits impressive selectivity toward complementary anionic guest species. By incorporating reporter groups within such systems, we have developed both electrochemical and optical anion sensors which can achieve highly selective sensing of anionic guests. Transition metals, lanthanides, and organic fluorophores integrated within the mechanically bonded structural framework of the receptor are perturbed by the binding of the guest, with a concomitant change in the emission profile. We have also exploited the unique dynamics of interlocked hosts by demonstrating that an anion-induced conformational change can be used as a means of signal transduction. Electrochemical sensing has been realized by integration of the redox-active ferrocene functionality within a range of rotaxane and catenanes; binding of an anion perturbs the metallocene, leading to a cathodic shift in the ferrocene/ferrocenium redox couple. In order to obtain practical sensors for target charged guest species, confinement of receptors at a surface is necessary in order to develop robust, reuseable devices. Surface confinement also offers advantages over solution based receptors, including amplification of signal, enhanced guest binding thermodynamics and the negation of solubility problems. We have fabricated anion-templated rotaxanes and catenanes on gold electrode surfaces and demonstrated that the resulting mechanically bonded self-assembled monolayers are electrochemically responsive to the binding of anions, a crucial first step toward the advancement of sophisticated, highly selective, anion sensory devices. Rotaxane and catenane host molecules may be engineered to offer a superior level of molecular recognition, and the incorporation of optical or electrochemical reporter groups within these interlocked frameworks can allow for guest sensing. Advances in synthetic templation strategies has facilitated the synthesis of interlocked architectures and widened their interest as prototype molecular machines. However, their unique host-guest properties are only now beginning to be exploited as a sophisticated approach to chemical sensing. The development of functional host-guest sensory systems such as these is of great interest to the interdisciplinary field of supramolecular chemistry.
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Affiliation(s)
- Matthew J. Langton
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield, Oxford OX1
3TA, United Kingdom
| | - Paul D. Beer
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield, Oxford OX1
3TA, United Kingdom
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13
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Gilday LC, Beer PD. Halogen- and Hydrogen-Bonding Catenanes for Halide-Anion Recognition. Chemistry 2014; 20:8379-85. [DOI: 10.1002/chem.201402752] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Indexed: 11/09/2022]
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14
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Evans NH, Beer PD. Progress in the synthesis and exploitation of catenanes since the Millennium. Chem Soc Rev 2014; 43:4658-83. [PMID: 24676138 DOI: 10.1039/c4cs00029c] [Citation(s) in RCA: 169] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Catenanes - molecules consisting of interlocked macrocyclic rings - have been prepared by templation strategies for some thirty years. The utilization of Cu(I) cation, aromatic donor-acceptor interactions and hydrogen bonding assisted self-assembly strategies has led to the construction of numerous examples of these aesthetically pleasing species. This review seeks to discuss key developments in the synthesis and functional application of catenanes that have occurred since the Millennium. The much expanded range of metal cation templates; the genesis and growth of anion templation, as well as the use of alternative supramolecular interactions (halogen bonding and radical templation) and thermodynamically controlled reactions to synthesize catenanes are detailed. The class of catenanes that may be described as "molecular machines" are then highlighted and to conclude, attempts to fabricate catenanes onto surfaces and into metal organic frameworks (MOFs) are discussed.
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Affiliation(s)
- Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
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15
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Gale PA, Busschaert N, Haynes CJE, Karagiannidis LE, Kirby IL. Anion receptor chemistry: highlights from 2011 and 2012. Chem Soc Rev 2013; 43:205-41. [PMID: 24108306 DOI: 10.1039/c3cs60316d] [Citation(s) in RCA: 386] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review covers advances in anion complexation in the years 2011 and 2012. The review covers both organic and inorganic systems and also highlights the applications to which anion receptors can be applied such as self-assembly and molecular architecture, sensing, catalysis and anion transport.
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Affiliation(s)
- Philip A Gale
- Chemistry, University of Southampton, Southampton, SO17 1BJ, UK.
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16
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Caballero A, Zapata F, Beer PD. Interlocked host molecules for anion recognition and sensing. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.01.016] [Citation(s) in RCA: 126] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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17
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Spence GT, Beer PD. Expanding the scope of the anion templated synthesis of interlocked structures. Acc Chem Res 2013. [PMID: 23190374 DOI: 10.1021/ar300264n] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nature achieves impressively strong and selective complexation of small molecule anions through the elaborate binding sites of sophisticated proteins. Inspired by these examples, we have developed an anion templation strategy for the synthesis of mechanically interlocked host structures for anion recognition applications. Upon removal of the discrete anionic templating species, such host systems possess unique, three-dimensional, geometrically restrained cavities containing convergent hydrogen bond donor atoms. Such structures exhibit high affinity binding selectivity toward complementary anions. This Account describes recent advances in this anion templation meth odology, demonstrating the versatility and scope of this approach, and progressing to more diverse architectures. Specifically, we have prepared an expansive range of interlocked hosts with enhanced anion recognition properties, such as the ability to operate effectively in competitive aqueous media. We have produced these structures through the utilization of a new anion templated amide condensation synthetic method and through the incorporation of a range of different anion binding motifs, such as groups capable of effective solution-phase halogen bonding interactions. Importantly, direct comparisons between halogen bonding and hydrogen bonding systems reveal impressively magnified anion recognition properties for halogen bonding interlocked host systems. We have also employed the anion templation strategy successfully to construct selective electrochemical and luminescent anion sensors, as well as architectures of increasing complexity, such as a triply interlocked capsule and a handcuff catenane. The synthesis of these latter examples presents greater challenges; however, such molecules offer additional applications in higher order recognition and sensing and in switchable molecular devices. Having established anion templation as a viable synthetic route to interlocked architectures, we have used this strategy to fabricate a multitude of innovative structures. The key principles of this approach are the ability of anionic species to template the association of carefully designed components, and of the resulting molecular framework with its interlocked host cavity to display impressive anion recognition selectivity. Mechanically interlocked structures have numerous potential applications in nanotechnology. Therefore, the continuing development of effective synthetic methods, especially those which yield functional systems, is of great interest in the broad interdisciplinary field of supramolecular chemistry.
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Affiliation(s)
- Graeme T. Spence
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield, Oxford OX1 3TA, United Kingdom
| | - Paul D. Beer
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield, Oxford OX1 3TA, United Kingdom
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18
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Allain C, Beer PD, Faulkner S, Jones MW, Kenwright AM, Kilah NL, Knighton RC, Sørensen TJ, Tropiano M. Lanthanide appended rotaxanes respond to changing chloride concentration. Chem Sci 2013. [DOI: 10.1039/c2sc21614k] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Potopnyk MA, Cmoch P, Jarosz S. Short Synthesis of Diamide-Linked Sucrose Macrocycles. Org Lett 2012; 14:4258-61. [DOI: 10.1021/ol301993d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Mykhaylo A. Potopnyk
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Piotr Cmoch
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Sławomir Jarosz
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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20
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Hancock LM, Marchi E, Ceroni P, Beer PD. Anion Sensing in Aqueous Media by Photo-active Transition-Metal Bipyridyl Rotaxanes. Chemistry 2012; 18:11277-83. [DOI: 10.1002/chem.201201422] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Indexed: 11/12/2022]
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21
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Spence GT, White NG, Beer PD. Investigating the effect of macrocycle size in anion templated imidazolium-based interpenetrated and interlocked assemblies. Org Biomol Chem 2012; 10:7282-91. [DOI: 10.1039/c2ob26237a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Evans NH, Rahman H, Leontiev AV, Greenham ND, Orlowski GA, Zeng Q, Jacobs RMJ, Serpell CJ, Kilah NL, Davis JJ, Beer PD. Solution and surface-confined chloride anion templated redox-active ferrocene catenanes. Chem Sci 2012. [DOI: 10.1039/c2sc00909a] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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23
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Brown A, Beer PD. Porphyrin-functionalised rotaxanes for anion recognition. Dalton Trans 2012; 41:118-29. [DOI: 10.1039/c1dt11372k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Evans NH, Serpell CJ, White NG, Beer PD. A 1,2,3,4,5-Pentaphenylferrocene-Stoppered Rotaxane Capable of Electrochemical Anion Recognition. Chemistry 2011; 17:12347-54. [DOI: 10.1002/chem.201101811] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Indexed: 11/06/2022]
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Serpell CJ, Chall R, Thompson AL, Beer PD. Chloride anion triggered motion in a bis-imidazolium rotaxane. Dalton Trans 2011; 40:12052-5. [PMID: 21445380 DOI: 10.1039/c1dt10186b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first bis-imidazolium-containing rotaxane, synthesised via anion templated self-assembly. Its co-conformation is controlled by a chloride anion recognition mechanism, thus demonstrating the viability of this protocol as a stimulus for shuttling molecular motion.
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Affiliation(s)
- Christopher J Serpell
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, United Kingdom
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26
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Li Y, Mullen KM, Sardinha J, Félix V, Beer PD. Clipping and stoppering anion templated synthesis of a [2]rotaxane host system. Dalton Trans 2011; 40:12180-90. [DOI: 10.1039/c1dt10887e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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