51
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Maiti S, Alam T, Mal P. Soft-Hard Acid-Base-Controlled C−H Trifluoroethoxylation and Trideuteriomethoxylation of Anilides. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Saikat Maiti
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
| | - Toufique Alam
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
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52
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Zhang D, Ronson TK, Mosquera J, Martinez A, Nitschke JR. Selective Anion Extraction and Recovery Using a FeII
4
L4
Cage. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800459] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Dawei Zhang
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Tanya K. Ronson
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jesús Mosquera
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | | | - Jonathan R. Nitschke
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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53
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Zhang D, Ronson TK, Mosquera J, Martinez A, Nitschke JR. Selective Anion Extraction and Recovery Using a Fe II4 L 4 Cage. Angew Chem Int Ed Engl 2018; 57:3717-3721. [PMID: 29393989 PMCID: PMC6001518 DOI: 10.1002/anie.201800459] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Indexed: 12/16/2022]
Abstract
Selective anion extraction is useful for the recovery and purification of valuable chemicals, and in the removal of pollutants from the environment. Here we report that FeII4L4 cage 1 is able to extract an equimolar amount of ReO4−, a high‐value anion and a nonradioactive surrogate of TcO4−, from water into nitromethane. Importantly, the extraction was efficiently performed even in the presence of 10 other common anions in water, highlighting the high selectivity of 1 for ReO4−. The extracted guest could be released into water as the cage disassembled in ethyl acetate, and then 1 could be recycled by switching the solvent to acetonitrile. The versatile solubility of the cage also enabled complete extraction of ReO4− (as the tetrabutylammonium salt) from an organic phase into water by using the sulfate salt of 1 as the extractant.
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Affiliation(s)
- Dawei Zhang
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Tanya K Ronson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jesús Mosquera
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | - Jonathan R Nitschke
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
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54
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Colomban C, Fuertes-Espinosa C, Goeb S, Sallé M, Costas M, Blancafort L, Ribas X. Self-Assembled Cofacial Zinc-Porphyrin Supramolecular Nanocapsules as Tuneable 1 O 2 Photosensitizers. Chemistry 2018; 24:4371-4381. [PMID: 29315876 DOI: 10.1002/chem.201705531] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Indexed: 12/11/2022]
Abstract
We demonstrate the benefits of using cofacial Zn-porphyrins as structural synthons in coordination-driven self-assembled prisms to produce cage-like singlet oxygen (1 O2 ) photosensitizers with tunable properties. In particular, we describe the photosensitizing and emission properties of palladium- and copper-based supramolecular capsules, and demonstrate that the nature of the bridging metal nodes in these discrete self-assembled prisms strongly influences 1 O2 generation at the Zn-porphyrin centers. The PdII -based prism is a particularly robust photosensitizer, whereas the CuII self-assembled prism is a dormant photosensitizer that could be switched to a ON state upon disassembly of the suprastructure. Furthermore, the well-defined cavity within the prisms allowed encapsulation of pyridine-based ligands and fullerene derivatives, which led to a remarkable guest tuning of the 1 O2 production.
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Affiliation(s)
- Cédric Colomban
- Institut de Química Computatcional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E17003, Catalonia, Spain
| | - Carles Fuertes-Espinosa
- Institut de Química Computatcional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E17003, Catalonia, Spain
| | - Sébastien Goeb
- Laboratoire MOLTECH-Anjou, Université d'Angers, CNRS UMR 6200, 2 bd Lavoisier, 49045, Angers Cedex, France
| | - Marc Sallé
- Laboratoire MOLTECH-Anjou, Université d'Angers, CNRS UMR 6200, 2 bd Lavoisier, 49045, Angers Cedex, France
| | - Miquel Costas
- Institut de Química Computatcional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E17003, Catalonia, Spain
| | - Lluís Blancafort
- Institut de Química Computatcional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E17003, Catalonia, Spain
| | - Xavi Ribas
- Institut de Química Computatcional i Catàlisi (IQCC), Departament de Química, Universitat de Girona, Campus Montilivi, Girona, E17003, Catalonia, Spain
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55
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Collins MS, Phan NM, Zakharov LN, Johnson DW. Coupling Metaloid-Directed Self-Assembly and Dynamic Covalent Systems as a Route to Large Organic Cages and Cyclophanes. Inorg Chem 2018; 57:3486-3496. [PMID: 29412648 DOI: 10.1021/acs.inorgchem.7b02716] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of large cyclic and caged disulfide structures was achieved by pnictogen-assisted iodine oxidation starting from self-assembled pnictogen thiolate complexes. The directing behavior of pnictogen enables rapid and selective syntheses of many discrete disulfide assemblies over competing oligomers/polymers, ranging from structures that are small and strained to those that are large and multifaceted, including 3D cages. Traditional cyclization reactions carried out under kinetic control are generally low-yielding, which often results in the formation of insoluble oligomers and polymers as unwanted side products. The prospect of self-assembling organic structures efficiently under thermodynamic control adds an attractive tool for the synthesis of cyclophanes and other large cage compounds. This method of metaloid-directed self-assembly within a dynamic covalent system allows for the rapid and discriminant self-assembly of disulfide cyclophanes without the consequences sometimes seen in traditional cyclophane syntheses such as poor yields, long reaction times, low ring-closing selectivity, and extensive purifications. The present paper provides an overview of this approach, explores the role of the pnictogen additive and solvent in this reaction, begins to test the limits of this strategy in complex 3D molecule formation, and extends our strategy to include one-pot syntheses that do not require the use of a pnictogen additive. This Viewpoint also includes an extended introduction to serve as a minireview highlighting the utility of a self-assembly approach to create organic cage structures. From a practical standpoint, the cyclophanes isolated from this method can serve as precursors in the production of insulating plastics (e.g., through the widely used parylene polymerization process, which uses derivatives of paracyclophane as monomers) or as potential hosts for molecular separations or capture.
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Affiliation(s)
- Mary S Collins
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
| | - Ngoc-Minh Phan
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
| | - Lev N Zakharov
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States.,Center for Advanced Materials Characterization in Oregon (CAMCOR) , University of Oregon , Eugene , Oregon 97403-1241 , United States
| | - Darren W Johnson
- Department of Chemistry & Biochemistry and the Materials Science Institute , University of Oregon , Eugene , Oregon 97403-1253 , United States
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56
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Percástegui EG, Reyes-Mata C, Flores-Alamo M, Quiroz-García B, Rivera E, Castillo I. Transformations in Chemically Responsive Copper-Calixarene Architectures. Chem Asian J 2018; 13:520-527. [DOI: 10.1002/asia.201701741] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/08/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Edmundo G. Percástegui
- Instituto de Química; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
- Current address: Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Carlos Reyes-Mata
- Instituto de Química; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
| | - Marcos Flores-Alamo
- Facultad de Química; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
| | - Beatriz Quiroz-García
- Instituto de Química; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
| | - Ernesto Rivera
- Instituto de Investigaciones en Materiales; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
| | - Ivan Castillo
- Instituto de Química; Universidad Nacional Autónoma de México, UNAM; Circuito Exterior Ciudad Universitaria 04510 México
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57
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Maiti S, Mal P. Soft–Hard Acid/Base-Controlled, Oxidative, N-Selective Arylation of Sulfonanilides via a Nitrenium Ion. J Org Chem 2018; 83:1340-1347. [DOI: 10.1021/acs.joc.7b02841] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Saikat Maiti
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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58
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59
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Haynes CJE, Zhu J, Chimerel C, Hernández-Ainsa S, Riddell IA, Ronson TK, Keyser UF, Nitschke JR. Blockable Zn10
L15
Ion Channels through Subcomponent Self-Assembly. Angew Chem Int Ed Engl 2017; 56:15388-15392. [DOI: 10.1002/anie.201709544] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Cally J. E. Haynes
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jinbo Zhu
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Catalin Chimerel
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | | | - Imogen A. Riddell
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
- Current address: School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Tanya K. Ronson
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Ulrich F. Keyser
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Jonathan R. Nitschke
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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60
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Haynes CJE, Zhu J, Chimerel C, Hernández-Ainsa S, Riddell IA, Ronson TK, Keyser UF, Nitschke JR. Blockable Zn10
L15
Ion Channels through Subcomponent Self-Assembly. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201709544] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cally J. E. Haynes
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Jinbo Zhu
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Catalin Chimerel
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | | | - Imogen A. Riddell
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
- Current address: School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Tanya K. Ronson
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
| | - Ulrich F. Keyser
- Cavendish Laboratory; University of Cambridge; JJ Thompson Avenue Cambridge CB3 0HE UK
| | - Jonathan R. Nitschke
- Department of Chemistry; University of Cambridge; Lensfield Road Cambridge CB2 1EW UK
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61
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Ronson TK, Meng W, Nitschke JR. Design Principles for the Optimization of Guest Binding in Aromatic-Paneled Fe II4L 6 Cages. J Am Chem Soc 2017; 139:9698-9707. [PMID: 28682628 DOI: 10.1021/jacs.7b05202] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A series of aromatic-paneled FeII4L6 cages was synthesized through iron(II)-templated subcomponent self-assembly of 2-formylpyridine and C2-symmetric diamine building blocks having differing geometries, including many with a large degree of lateral offset between metal-binding sites. The new cages were characterized using X-ray crystallography, NMR spectroscopy, and mass spectrometry. Investigations of the guest binding properties of the cages provided insights into the structural factors important for the observation of guest binding. Both the size and arrangement of the aromatic panels were shown to be crucial for achieving effective encapsulation of large hydrophobic guests, including fullerenes, polycyclic aromatic hydrocarbons, and steroids, with subtle differences in the structure of subcomponents resulting in incommensurate effects on the binding abilities of the resulting hosts. Cages with large, offset aromatic panels were observed to be the most effective hosts as a result of a preference for a ligand conformation where the aromatic panels lie tangent to the edges of the tetrahedron, thus maximizing cavity enclosure.
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Affiliation(s)
- Tanya K Ronson
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, U.K
| | - Wenjing Meng
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, U.K
| | - Jonathan R Nitschke
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, U.K
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