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Carré V, Godard P, Méreau R, Jacquot de Rouville HP, Jonusauskas G, McClenaghan N, Tassaing T, Vincent JM. Photogeneration of Chlorine Radical from a Self-Assembled Fluorous 4CzIPN•Chloride Complex: Application in C-H Bond Functionalization. Angew Chem Int Ed Engl 2024:e202402964. [PMID: 38634355 DOI: 10.1002/anie.202402964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/19/2024]
Abstract
The chlorine radical is a strong HAT (Hydrogen Atom Transfer) agent that is very useful for the functionalization of C(sp3)-H bonds. Albeit highly attractive, its generation from the poorly oxidizable chloride ion mediated by an excited photoredox catalyst is a difficult task. We now report that 8Rf8-4CzIPN, an electron-deficient fluorous derivative of the benchmark 4CzIPN photoredox catalyst belonging to the donor-acceptor carbazole-cyanoarene family, is not only a better photooxidant than 4CzIPN, but also becomes an excellent host for the chloride ion. Combining these two properties ultimately makes the self-assembled 8Rf8-4CzIPN•Cl- dual catalyst highly reactive in redox-neutral Giese-type C(sp3)-H bond alkylation reactions promoted by the chlorine radical. Additionally, because of its fluorous character, the efficient separation/recovery of 8Rf8-4CzIPN could be envisioned.
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Affiliation(s)
- Victor Carré
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | - Pascale Godard
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | - Raphaël Méreau
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | | | - Gediminas Jonusauskas
- Laboratoire Ondes et Matière d'Aquitaine, CNRS UMR 5798, Univ. Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | - Nathan McClenaghan
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | - Thierry Tassaing
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
| | - Jean-Marc Vincent
- Institut des Sciences Moléculaires, CNRS UMR 5255, Université de Bordeaux, 351, Crs de la Libération, 33405, Talence, France
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2
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Mimuro T, Yoshida A, Kamo K, Hirasawa M, Kondo SI. Highly soluble bisurea derivatives for anion recognition. Org Biomol Chem 2023. [PMID: 37314147 DOI: 10.1039/d3ob00802a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Highly soluble bisurea derivatives having 1,2-phenoxyethane (receptors 2) and 1,2-ethoxyethane (3) moieties as spacer groups were designed and prepared based on previously reported receptors with the 2,2'-binaphthyl group as a spacer (1). The receptors can be prepared in fewer steps from commercially available starting materials. The solubilities and anion recognition abilities were evaluated by UV-vis and NMR spectral methods. Receptors 2 and 3 bearing a flexible linker showed good solubilities in common organic solvents such as CHCl3, MeCN, 2-butanone, toluene, and THF. Although the anion recognition abilities of receptors 2 and 3 were lower than those of receptors 1, the greatly improved solubilities of receptors 2 and 3 allow the association of anions under more concentrated conditions for the solubilisation of salts such as lithium chloride in organic solvents.
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Affiliation(s)
- Tsubasa Mimuro
- Department of Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan.
| | - Akihiro Yoshida
- Institute for Advanced Integrated Technology, Resonac Co., 48 Wadai, Tsukuba, Ibaraki, 300-4247, Japan
| | - Kazuyuki Kamo
- Institute for Advanced Integrated Technology, Resonac Co., 48 Wadai, Tsukuba, Ibaraki, 300-4247, Japan
| | - Manabu Hirasawa
- Institute for Advanced Integrated Technology, Resonac Co., 48 Wadai, Tsukuba, Ibaraki, 300-4247, Japan
| | - Shin-Ichi Kondo
- Department of Chemistry, Faculty of Science, Yamagata University, Yamagata 990-8560, Japan.
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3
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Sudan S, Chen DW, Berton C, Fadaei-Tirani F, Severin K. Synthetic Receptors with Micromolar Affinity for Chloride in Water. Angew Chem Int Ed Engl 2023; 62:e202218072. [PMID: 36628647 DOI: 10.1002/anie.202218072] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/12/2023]
Abstract
A water-soluble coordination cage was obtained by reaction of Pd(NO3 )2 with a 1,3-di(pyridin-3-yl)benzene ligand featuring a short PEG chain. The cavity of the metal-organic cage contains one nitrate anion, which is readily replaced by chloride. The apparent association constant for chloride binding in buffered aqueous solution is Ka =1.8(±0.1)×105 M-1 . This value is significantly higher than what has been reported for other macrocyclic chloride receptors. The heavier halides Br- and I- compete with binding or self-assembly, but the receptor displays very good selectivity over common anions such as phosphate, acetate, carbonate, and sulfate. A further increase of the chloride binding affinity by a factor of 3 was achieved using a fluorinated dipyridyl ligand.
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Affiliation(s)
- Sylvain Sudan
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Damien W Chen
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Cesare Berton
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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4
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Vinodh M, Alipour FH, Al-Azemi TF. Spatially Designed Supramolecular Anion Receptors Based on Pillar[5]arene Scaffolds: Synthesis and Halide Anion Binding Properties. ACS OMEGA 2023; 8:1466-1475. [PMID: 36643541 PMCID: PMC9835175 DOI: 10.1021/acsomega.2c06903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
Urea-functionalized anion receptors based on brominated functionalized pillar[5]arenes were prepared. The binding affinity toward halide anions was investigated and probed using 1H NMR titration and isothermal titration calorimetry (ITC). The complexation behavior was affected by the structure of the receptor and the nature of the anionic guest. The synthesized receptors are highly selective toward fluoride resulting in the formation of a 1:2 host-to-guest complex. The anion receptor based on the 1,3-alternate pillar[5]arene regioisomer shows the highest affinity toward fluorine anions. No significant interactions were observed with larger bromine anions. The formation of a self-assembled supramolecular polymer driven by hydrogen bonds in solution was demonstrated by diffusion-ordered spectroscopy (DOSY), ITC, and dynamic light scattering (DLS) measurements. From ITC dilution experiments, we found that the supramolecular polymer self-assembly at higher concentrations is a spontaneous process as indicated by the positive value of Gibbs free energy (ΔG = 12.04 kJ mol-1).
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5
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Patel S, Bariya D, Mishra R, Mishra S. Bile acid-based receptors and their applications in recognition. Steroids 2022; 179:108981. [PMID: 35176289 DOI: 10.1016/j.steroids.2022.108981] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/13/2022] [Accepted: 02/09/2022] [Indexed: 12/15/2022]
Abstract
Ion recognition has attracted great attention in the past decades because of its important role in biology, medicine, environment, and chemistry. The combination of rigidity, curved structure and amphiphilic nature makes bile acids a host system for ion recognition. In addition, the availability of hydroxyl groups in bile acids can be used for further derivatization to develop various ion recognition receptors. The detection of ions is revealed by the binding constant ka value, log approach, and UV-visible or 1H NMR titration, while visual detection is determined by gel-phase transition, colorimetric and fluorescent probes. In this review, we have discussed the bile acid-based receptors and their ion-recognition capability. These bile acid-based systems have the potential for the development of anion transport for biological activity.
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Affiliation(s)
- Sejal Patel
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gujarat, 382426 India
| | - Dipakkumar Bariya
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gujarat, 382426 India
| | - Roli Mishra
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gujarat, 382426 India.
| | - Satyendra Mishra
- Department of Engineering and Physical Sciences, Institute of Advanced Research, Gujarat, 382426 India.
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6
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Mirzaei S, Espinoza Castro VM, Hernández Sánchez R. Nonspherical anion sequestration by C-H hydrogen bonding. Chem Sci 2022; 13:2026-2032. [PMID: 35308854 PMCID: PMC8849022 DOI: 10.1039/d1sc07041j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 01/22/2022] [Indexed: 12/05/2022] Open
Abstract
Macrocyclic arenes laid the foundations of supramolecular chemistry and their study established the fundamentals of noncovalent interactions. Advancing their frontier, here we designed rigidified resorcin[4]arenes that serve as hosts for large nonspherical anions. In one synthetic step, we vary the host's anion affinity properties by more than seven orders of magnitude. This is possible by engineering electropositive aromatic C–H bond donors in an idealized square planar geometry embedded within the host's inner cavity. The hydrogen atom's electropositivity is tuned by introducing fluorine atoms as electron withdrawing groups. These novel macrocycles, termed fluorocages, are engineered to sequester large anions. Indeed, experimental data shows an increase in the anion association constant (Ka) as the number of F atoms increase. The observed trend is rationalized by DFT calculations of Hirshfeld Charges (HCs). Most importantly, fluorocages in solution showed weak-to-medium binding affinity for large anions like [PF6]− (102< Ka <104 M−1), and high affinity for [MeSO3]− (Ka >106). Fluorocages: new class of rigidified host utilizing nontraditional C–H hydrogen bonds to capture the nonspherical anions.![]()
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Affiliation(s)
- Saber Mirzaei
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Victor M Espinoza Castro
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
| | - Raúl Hernández Sánchez
- Department of Chemistry, University of Pittsburgh 219 Parkman Ave. Pittsburgh Pennsylvania 15260 USA
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7
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Sharma R, Vijay A, Mukherjee A, Talukdar P. Bis(cholyl)-based chloride channels with oxalamide and hydrazide selectivity filters. Org Biomol Chem 2022; 20:2054-2058. [DOI: 10.1039/d1ob02028e] [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
We report the development of supramolecular bis(cholyl) ion channels by using oxalamide and hydrazide as selectivity filters. The hydrazide system displayed superior chloride transport activity than oxalamide via the formation...
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8
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Phapale D, Kushwaha A, Das D. A simple benzimidazole styryl-based colorimetric chemosensor for dual sensing application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:111-118. [PMID: 30771591 DOI: 10.1016/j.saa.2019.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/25/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
A new colorimetric styryl-benzimidazole based receptor to recognize more than one analyte trans-2-[4'-(dimethylamino)styryl]benzimidazole) (L1) has been synthesized and fully characterized by 13C and 1H NMR, elemental analysis, UV-vis spectroscopy, and HRMS. Investigation of sensing ability of receptor L1 was carried out in presence of multiple anions (Br-, CN-, Cl-, ClO4-, F-, HSO4-, PF6-, NO3-, S2-, OH-, AcO- and H2PO4-) and cations (Cu2+, Cr3+, Al3+, Mg2+, Cd2+, Ni2+, Fe3+, K+, Fe2+, Mn2+, Ag+, Hg2+, Ca2+, Co2+, Pb2+, Na+, and Zn2+) by using UV-vis spectroscopy. Receptor L1 showed colorimetric response towards only for HSO4- ion. Receptor L1-HSO4- interaction confirmed with the help of 1H NMR titration. Among various cations, L1 selectively sense the Cu2+ and Al3+ with the drastic colour change from yellow to green and dark yellow respectively. The stoichiometric binding ratio of L1 with HSO4-, Cu2+, and Al3+ found to be 1:1 by jobs method and HRMS data proved the complex formation between L1 and Cu2+/Al3+ with very low detection limit. In addition to explore practical applicability of L1, paper strips have been made and used to detect HSO4- and Cu2+ ions, respectively, up to 10 ppm level.
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Affiliation(s)
- Daulat Phapale
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Archana Kushwaha
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Dipanwita Das
- Department of Chemistry, Institute of Chemical Technology, Matunga, Mumbai 400019, India.
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9
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Sun J, Xu X, Yu G, Li W, Shi J. Coumarin-based tripodal chemosensor for selective detection of Cu(II) ion and resultant complex as anion probe through a Cu(II) displacement approach. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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10
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Connor AL, Hu T, Detchou CSF, Liu R, Pulavarti SVSRK, Szyperski T, Lu Z, Gong B. Aromatic oligureas as hosts for anions and cations. Chem Commun (Camb) 2018; 52:9905-8. [PMID: 27427283 DOI: 10.1039/c6cc03681c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aromatic oligoureas 3 and 4 have urea moieties engaging in weak intramolecular H-bonding that constrains their backbones. The shorter 3a and 3b are able to bind chloride and acetate but not their corresponding counterion. The longer 4 binds both an anion and its counterion with the same affinity.
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Affiliation(s)
- Alan L Connor
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Ting Hu
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Cadnel S F Detchou
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Rui Liu
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Surya V S R K Pulavarti
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Thomas Szyperski
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Zhonglin Lu
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
| | - Bing Gong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and College of Chemistry, Beijing Normal University, Beijing 100875, China.
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11
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Marques I, Costa PMR, Q. Miranda M, Busschaert N, Howe ENW, Clarke HJ, Haynes CJE, Kirby IL, Rodilla AM, Pérez-Tomás R, Gale PA, Félix V. Full elucidation of the transmembrane anion transport mechanism of squaramides using in silico investigations. Phys Chem Chem Phys 2018; 20:20796-20811. [DOI: 10.1039/c8cp02576b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The anion carrier mechanism promoted by squaramide-based molecules has been elucidated by molecular dynamics and chloride efflux studies.
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Affiliation(s)
- Igor Marques
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - Pedro M. R. Costa
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | - Margarida Q. Miranda
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
| | | | - Ethan N. W. Howe
- Chemistry
- University of Southampton
- Southampton
- UK
- School of Chemistry
| | | | | | | | - Ananda M. Rodilla
- University of Barcelona
- Faculty of Medicine
- Dept. Pathology and Experimental Therapeutics
- CCBRG
- Barcelona
| | - Ricardo Pérez-Tomás
- University of Barcelona
- Faculty of Medicine
- Dept. Pathology and Experimental Therapeutics
- CCBRG
- Barcelona
| | - Philip A. Gale
- Chemistry
- University of Southampton
- Southampton
- UK
- School of Chemistry
| | - Vítor Félix
- Department of Chemistry
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Aveiro
- Portugal
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12
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Lukashev NV, Grabovyi GA, Erzunov DA, Kazantsev AV, Latyshev GV, Averin AD, Beletskaya IP. Pd- and Cu-catalyzed approaches in the syntheses of new cholane aminoanthraquinone pincer-like ligands. Beilstein J Org Chem 2017; 13:564-570. [PMID: 28405236 PMCID: PMC5372750 DOI: 10.3762/bjoc.13.55] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/01/2017] [Indexed: 02/05/2023] Open
Abstract
Cu- and Pd-catalyzed arylation of aminocholanes has been described for the first time. While this Cu-catalyzed protocol provides high yields in reactions of aminocholanes with iodoarenes, Pd catalysis was found to be preferable for the reactions of aminocholanes with dichloroanthraquinones. UV-vis titration of bis(cholanylamino)anthraquinones with a series of cations demonstrated their high binding affinity to Cu2+, Al3+, and Cr3+.
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Affiliation(s)
- Nikolay V Lukashev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Gennadii A Grabovyi
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Dmitry A Erzunov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Alexey V Kazantsev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Gennadij V Latyshev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Alexei D Averin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
| | - Irina P Beletskaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow, 119991, Russia
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13
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Muwal PK, Chhatra RK, Das S, Pandey PS. Recognition of a Flavin Analogue by Novel Bile Acid-Based Receptors: Effects of Hydrogen Bonding and Aromatic π-Stacking Interactions. Aust J Chem 2017. [DOI: 10.1071/ch17220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Molecular recognition properties are reported for novel bile acid-based receptors that incorporate 2,6-diaminopyridine as a recognition unit. Apart from hydrogen-bonding interactions, the bile acid receptors exhibit significant aromatic π-stacking interactions with the aromatic fused ring of the flavin derivative. These studies provide rationalisation for the differences in binding behaviour of bile acid receptors having differing aromatic arm lengths towards a flavin analogue.
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15
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Hau FKW, Lo HS, Yam VWW. Synthesis and Photophysical Studies of Calixarene-Based Alkynylplatinum(II) Terpyridine Complexes with Various Receptor Sites for Colorimetric and Luminescence Sensing of Anions. Chemistry 2016; 22:3738-49. [DOI: 10.1002/chem.201503401] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Franky Ka-Wah Hau
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and; Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong P. R. China), Fax
| | - Hiu-Suet Lo
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and; Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong P. R. China), Fax
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials (Areas of Excellence Scheme, University Grants Committee, Hong Kong) and; Department of Chemistry; The University of Hong Kong; Pokfulam Road Hong Kong P. R. China), Fax
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16
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Padghan SD, Bhosale RS, Ghule NV, Puyad AL, Bhosale SV, Bhosale SV. Hydrogen sulfate ion sensing in aqueous media based on a fused pyrimido benzothiazole derivative. RSC Adv 2016. [DOI: 10.1039/c6ra01980c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The receptor 3-cyano-4-imino-2-methylthio-4H-pyrimido[2,1-b][1,3]benzothiazole (SVK-1) was employed for the selective sensing of HSO4− ions in aqueous media.
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Affiliation(s)
- Sachin D. Padghan
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Rajesh S. Bhosale
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Namdev V. Ghule
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Avinash L. Puyad
- School of Chemical Sciences
- Swami RamanandTeerthMarathwada University
- Nanded-431606
- India
| | | | - Sidhanath V. Bhosale
- Polymers and Functional Materials Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
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17
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Nayal A, Pandey PS. Bile acid-based triazole and triazolium receptors for colorimetric sensing of anions. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Blažek Bregović V, Basarić N, Mlinarić-Majerski K. Anion binding with urea and thiourea derivatives. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.03.011] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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19
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Anand T, Sivaraman G, Iniya M, Siva A, Chellappa D. Aminobenzohydrazide based colorimetric and ‘turn-on’ fluorescence chemosensor for selective recognition of fluoride. Anal Chim Acta 2015; 876:1-8. [DOI: 10.1016/j.aca.2015.03.035] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/17/2015] [Accepted: 03/20/2015] [Indexed: 10/23/2022]
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20
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Edwards SJ, Valkenier H, Busschaert N, Gale PA, Davis AP. High-affinity anion binding by steroidal squaramide receptors. Angew Chem Int Ed Engl 2015; 54:4592-6. [PMID: 25690527 PMCID: PMC4405043 DOI: 10.1002/anie.201411805] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Indexed: 12/01/2022]
Abstract
Exceptionally powerful anion receptors have been constructed by placing squaramide groups in axial positions on a steroidal framework. The steroid preorganizes the squaramide NH groups such that they can act cooperatively on a bound anion, while maintaining solubility in nonpolar media. The acidic NH groups confer higher affinities than previously-used ureas or thioureas. Binding constants exceeding 10(14) M(-1) have been measured for tetraethylammonium salts in chloroform by employing a variation of Cram's extraction procedure. The receptors have also been studied as transmembrane anion carriers in unilamellar vesicles. Unusually their activities do not correlate with anion affinities, thus suggesting an upper limit for binding strength in the design of anion carriers.
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Affiliation(s)
- Sophie J Edwards
- School of Chemistry, University of Bristol, Cantock*s CloseBristol BS8 1TS (UK)
| | - Hennie Valkenier
- School of Chemistry, University of Bristol, Cantock*s CloseBristol BS8 1TS (UK)
| | | | - Philip A Gale
- Chemistry, University of SouthamptonSouthampton, SO17 1BJ (UK)
| | - Anthony P Davis
- School of Chemistry, University of Bristol, Cantock*s CloseBristol BS8 1TS (UK)
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Berezin SK. Valinomycin as a Classical Anionophore: Mechanism and Ion Selectivity. J Membr Biol 2015; 248:713-26. [DOI: 10.1007/s00232-015-9784-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 02/18/2015] [Indexed: 10/23/2022]
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22
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Edwards SJ, Valkenier H, Busschaert N, Gale PA, Davis AP. High-Affinity Anion Binding by Steroidal Squaramide Receptors. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411805] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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23
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Samet M, Danesh-Yazdi M, Fattahi A, Kass SR. Power of a remote hydrogen bond donor: anion recognition and structural consequences revealed by IR spectroscopy. J Org Chem 2015; 80:1130-5. [PMID: 25490049 DOI: 10.1021/jo502652z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Natural and synthetic anion receptors are extensively employed, but the structures of their bound complexes are difficult to determine in the liquid phase. Infrared spectroscopy is used in this work to characterize the solution structures of bound anion receptors for the first time, and surprisingly only two of three hydroxyl groups of the neutral aliphatic triols are found to directly interact with Cl(–). The binding constants of these triols with zero to three CF3 groups were measured in a polar environment, and KCD3CN(Cl(–)) = 1.1 × 10(6) M(–1) for the tris(trifluoromethyl) derivative. This is a remarkably large value, and high selectivity with respect to interfering anions such as, Br(–), NO3(–) and NCS(–) is also displayed. The effects of the third “noninteracting” hydroxyl groups on the structures and binding constants were also explored, and surprisingly they are as large or larger than the OH substituents that hydrogen bond to Cl(–). That is, a remote hydroxyl group can play a larger role in binding than two OH substituents that directly interact with an anionic center.
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Samet M, Fattahi A, Kass SR. Stereoelectronic effects: a simple yet powerful tool to manipulate anion affinity. Org Biomol Chem 2015; 13:2170-6. [PMID: 25535926 DOI: 10.1039/c4ob02470b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Stereoelectronic effects on anion binding were examined, IR spectroscopy was used to probe structures, and a well aligned non-interacting group can be more significant than a hydrogen bond donor.
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Affiliation(s)
- Masoud Samet
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
| | - Alireza Fattahi
- Department of Chemistry
- Sharif University of Technology
- Tehran
- Iran
| | - Steven R. Kass
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
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25
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S. SK, Bothra S, Sahoo SK, S.K. AK. Fluoride selective colorimetric sensor based on cefetamet pivoxil drug. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.04.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Valkenier H, Davis AP. Making a match for Valinomycin: steroidal scaffolds in the design of electroneutral, electrogenic anion carriers. Acc Chem Res 2013; 46:2898-909. [PMID: 23514113 DOI: 10.1021/ar4000345] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The natural product Valinomycin is a well-known transmembrane cation carrier. Despite being uncharged, this molecule can extract potassium ions from water without counterions and ferry them through a membrane interior. Because it only transports positive ions, it is electrogenic, mediating a flow of charge across the membrane. Equivalent agents for anions would be valuable research tools and may have therapeutic applications, especially in the treatment of "channelopathies" such as cystic fibrosis. However, no such molecules have been found in nature. In this Account, we describe our research toward synthetic and rationally designed "anti-Valinomycins". As our core approach to this problem, we used the steroid nucleus, provided by cholic acid, as a scaffold for the assembly of anion receptors. By positioning H-bond donors on this framework, especially urea and thiourea groups in conformationally constrained axial positions, we created binding sites capable of exceptionally high affinities (up to 10(11) M(-1) for R4N(+)Cl(-) in chloroform). The extended hydrocarbon surface of the steroid helped to maintain compatibility with nonpolar media. When we tested these "cholapods" for chloride transport in vesicles, they provided the first evidence for electrogenic anion transport mediated by electroneutral organic carriers: in other words, they are the first authenticated anti-Valinomycins. They also proved active in live cells that we grew and assayed in an Ussing chamber. In subsequent work, we have shown that the cholapods can exhibit very high activities, with transport observed down to carrier/lipid ratios of 1:250,000. We also understand some of the effects of structure on the activity of these molecules. For example, in most cases, powerful transporters also act as powerful receptors. On the other hand, some modifications which favor binding do not promote transport. We gained functional advantages by cyclizing the cholapod architecture, which encloses the anion binding site. We could also simplify the structure without compromising function. A steroid-inspired trans-decalin framework has proved highly effective and may lead to agents with practical advantages. Changing an ester side-chain in this system revealed a surprising effect, whereby increased length and/or lipophilicity resulted in substantially raised activity. Although much remains to be discovered about these anionophores, their high activities and intrinsic tuneabilities bode well for applications. In future work, we plan to develop and exploit these molecules as tools for biophysical research and to explore the possibility of useful biological activity.
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Affiliation(s)
- Hennie Valkenier
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Anthony P. Davis
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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27
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Neutral bile acid cyclic dimers exhibit fluoride coordination by cooperative aliphatic and triazole CH segments. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Erdemir S, Kocyigit O, Alici O, Malkondu S. ‘Naked-eye’ detection of F− ions by two novel colorimetric receptors. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.138] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Kumar R, Bhalla V, Kumar M. Ratiometric/‘turn-on’ fluorescent chemosensor for CN−: mimicking XNOR logic function with Fe3+ ions. Dalton Trans 2013; 42:8808-14. [DOI: 10.1039/c3dt50142f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Li P, Zhang YM, Lin Q, Li JQ, Wei TB. A novel colorimetric HSO4(-) sensor in aqueous media. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 90:152-157. [PMID: 22336047 DOI: 10.1016/j.saa.2012.01.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 01/01/2012] [Accepted: 01/16/2012] [Indexed: 05/31/2023]
Abstract
A novel and sensitive anion receptor 3, bearing Schiff base structure, nitrophenyl azobenzol and carboxyl groups, was developed and characterized as a single chemosensor for the recognition of HSO(4)(-) anion. The different responses of UV-vis spectra and color changes of 3 could be applied to the recognition for HSO(4)(-) over other anions such as F(-), CI(-), Br(-), I(-), AcO(-), H(2)PO(4)(-) and CIO(4)(-) by the naked eye. Furthermore, the anion binding interaction of receptor-anion was also studied using UV-vis and (1)H NMR titration which revealed that 3 displayed a remarkable binding ability for the HSO(4)(-) with an association constant K(a)=6.59×10(4) M(-1). And the detection limitation of HSO(4)(-) with the receptor 3 was 2.0×10(-6) mol L(-1) in aqueous solution. Most importantly, the qualitative detection of HSO(4)(-) using receptor 3 was attempted with test kit which was made from receptor 3.
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Affiliation(s)
- Ping Li
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Lanzhou, Gansu, PR China
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33
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34
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Lee SK, Han Y, Choi Y, Kang J. A new dihydrogen phosphate selective anion receptor utilizing carbazole and indole. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-011-0098-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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35
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Rajakumar P, Padmanabhan R. Synthesis, Anti-Arthritic, and Anti-Inflammatory Activity of N-Tosyl aza Cyclophanes. Aust J Chem 2012. [DOI: 10.1071/ch11435] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The synthesis of novel N-tosyl tetraaza cyclophanes and N-tosyl diaza cyclophane incorporating m-terphenyl as spacer units is described. Anti-arthritic activity was studied by inhibition of the protein denaturation method (bovine serum albumin). All the N-tosyl aza cyclophanes exhibit excellent anti-arthritic activity. Anti-inflammatory activity of the synthesized cyclophanes was investigated using the human red blood cells (HRBC) membrane stabilization method and some of the N-tosyl aza cyclophanes exhibited good anti-inflammatory activity.
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Li JQ, Wei TB, Lin Q, Li P, Zhang YM. Mercapto thiadiazole-based sensor with colorimetric specific selectivity for AcO- in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 83:187-193. [PMID: 21903458 DOI: 10.1016/j.saa.2011.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 08/01/2011] [Accepted: 08/10/2011] [Indexed: 05/31/2023]
Abstract
A novel acetate selective anion sensor 3 based on azophenol and mercapto thiadiazole had been designed and synthesized. Sensor 3 behaves a single selectivity and sensitivity in the recognition for AcO(-) anion over other anions such as F(-), Cl(-), Br(-), I(-), H(2)PO(4)(-), HSO(4)(-) and ClO(4)(-) by naked-eyes and UV-vis spectra changes in aqueous solution (H(2)O/DMSO, 5:5, v/v). The color of the solution containing sensor 3 had an obvious change from colorless to orange only after the addition of AcO(-) in aqueous solution while other anions did not cause obvious color change. (1)H NMR titration results revealed that the binding process includes two steps: (i) hydrogen bonding interactions (for small quantities of acetate) and (ii) proton transfer between the sensor 3 and the coordinated anion (for high quantities of acetate). The association constant K(a) was 7.35×10(3) M(-1). The detection limitation of AcO(-) with the sensor 3 was 1.0×10(-6) mol L(-1).
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Affiliation(s)
- Jun-Qiang Li
- Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, PR China
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Bhardwaj VK, Sharma S, Singh N, Hundal MS, Hundal G. New tripodal and dipodal colorimetric sensors for anions based on tris/bis-urea/thiourea moieties. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.593629] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Vimal K. Bhardwaj
- a Department of Chemistry , Centre for Advanced Studies in Chemistry, Guru Nanak Dev University , Amritsar , 143005 , Punjab , India
| | - Sanyog Sharma
- a Department of Chemistry , Centre for Advanced Studies in Chemistry, Guru Nanak Dev University , Amritsar , 143005 , Punjab , India
| | - Narinder Singh
- b Department of Chemistry , Indian Institute of Technology Ropar , Ropar , Punjab , India
| | - Maninder Singh Hundal
- a Department of Chemistry , Centre for Advanced Studies in Chemistry, Guru Nanak Dev University , Amritsar , 143005 , Punjab , India
| | - Geeta Hundal
- a Department of Chemistry , Centre for Advanced Studies in Chemistry, Guru Nanak Dev University , Amritsar , 143005 , Punjab , India
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Chhatra RK, Kumar A, Pandey PS. Synthesis of a bile acid-based click-macrocycle and its application in selective recognition of chloride ion. J Org Chem 2011; 76:9086-9. [PMID: 21962257 DOI: 10.1021/jo201161n] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel method for the synthesis of a bile acid-based macrocycle has been developed using click chemistry. The 1,2,3-triazolium derivative of the macrocycle shows remarkable selectivity in binding of chloride ion.
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Affiliation(s)
- Rajesh K Chhatra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
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39
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Lee SK, Kang JM. A New Carboxylate Selective Anion Receptor Utilizing Amide and Carbamate Hydrogens. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.9.3215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Baggi G, Boiocchi M, Fabbrizzi L, Mosca L. Moderate and Advanced Intramolecular Proton Transfer in Urea-Anion Hydrogen-Bonded Complexes. Chemistry 2011; 17:9423-39. [DOI: 10.1002/chem.201100490] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Indexed: 11/07/2022]
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42
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Park JJ, Kim YH, Kim C, Kang J. Fine tuning of receptor polarity for the development of selective naked eye anion receptor. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.081] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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43
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Maslov MA, Morozova NG, Solomatina TV, Sergeeva OA, Cheshkov DA, Serebrennikova GA. Synthesis of cholic acid amino analogues by oxime reduction with TiCl3–NaBH3CN. MENDELEEV COMMUNICATIONS 2011. [DOI: 10.1016/j.mencom.2011.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Park JJ, Kim YH, Kim C, Kang J. Naked eye detection of fluoride and pyrophosphate with an anion receptor utilizing anthracene and nitrophenyl group as signaling group. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.092] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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45
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Lee SK, Kang JM. A New Acetate Selective Polyamine Receptor Based on Anthracene and 4-Nitrophenyl Group. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.4.1228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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Lee SK, Kim H, Jang S, Kang J. Carboxylate selective anion receptor based on two anthracenes with malonamide spacer. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.067] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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Jadhav JR, Bae CH, Kim HS. Fluorescence sensing of H2PO4- by a imidazolium-based cholestane receptor. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.107] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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Hussain S, Brotherhood PR, Judd LW, Davis AP. Diaxial Diureido Decalins as Compact, Efficient, and Tunable Anion Transporters. J Am Chem Soc 2011; 133:1614-7. [DOI: 10.1021/ja1076102] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sabir Hussain
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Peter R. Brotherhood
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Luke W. Judd
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
| | - Anthony P. Davis
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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Bergamaschi G, Boiocchi M, Monzani E, Amendola V. Pyridinium/urea-based anion receptor: methine formation in the presence of basic anions. Org Biomol Chem 2011; 9:8276-83. [DOI: 10.1039/c1ob06193c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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50
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Kang J, Jang SP, Kim YH, Lee JH, Park EB, Lee HG, Kim JH, Kim Y, Kim SJ, Kim C. Novel receptors with quinoline and amide moieties for the biologically important ions. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.10.058] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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