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Pan G, Pu M, Wang H, Ying M, Li Y, Dong S, Feng X, Liu X. Catalytic Enantioselective Nucleophilic Addition to Arynes by a New Quaternary Guanidinium Salt-Based Phase-Transfer Catalyst. J Am Chem Soc 2023; 145:26318-26327. [PMID: 37962558 DOI: 10.1021/jacs.3c09594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Owing to the mild generation methods, arynes have been widely used in synthetic chemistry. However, achieving asymmetric organocatalytic reactions with arynes remains a formidable and infrequent challenge, primarily because these neutral and transient species tend to spontaneously quench. To address this issue, a solid-liquid phase-transfer strategy is devised in which the generation speed of arynes could be controlled by the in situ generated fluoride-based chiral phase-transfer catalyst. In this study, we present a catalytic enantioselective nucleophilic addition reaction involving arynes, utilizing an amino amide-based guanidinium salt QG•X. Furthermore, we demonstrate the broad compatibility of this reaction with various arynes and cyclic/acyclic β-keto amides, leading to the creation of diverse α-aryl quaternary stereocenters with good stereoselectivity. Mechanistic investigations have uncovered the potential involvement of a chiral intramolecular cationic-anionic pair and HF during the ion exchange between QG•X and CsF for nucleophile activation and aryne generation. Additionally, DFT calculations suggested that the observed high levels of enantioselectivity can be attributed to steric repulsion and the cumulative noncovalent interactions between the catalysts and substrates.
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Affiliation(s)
- Guihua Pan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Maoping Pu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Hongyu Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Meijia Ying
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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2
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Carlotti M, Losi T, De Boni F, Vivaldi FM, Araya-Hermosilla E, Prato M, Pucci A, Caironi M, Mattoli V. Preparation of different conjugated polymers characterized by complementary electronic properties from an identical precursor. Polym Chem 2023; 14:4465-4473. [PMID: 38013925 PMCID: PMC10548785 DOI: 10.1039/d3py00868a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/01/2023] [Indexed: 11/29/2023]
Abstract
The possibility of generating regions with different electronic properties within the same organic semiconductor thin film could offer novel opportunities for designing and fabricating organic electronic devices and circuits. This study introduces a new approach based on a novel type of highly processable polymer precursor that can yield two different conjugated polymers characterized by complementary electronic properties, i.e. promoting electron or hole transport, from the same starting material. In particular, these multipotent precursors comprise functionalized dihydroanthracene units that can offer several functionalization opportunities to improve the solubility or insert specific functionalities. This strategy also allows for the preparation of high-molecular-weight conjugated polymers comprising diethynylanthracene and anthraquinone units without the need for solubilizing side chains. Thin films of the polymer precursor can be used, after solid-state transformations, to prepare single organic layers comprising regions characterized by different chemical nature and electronic properties. Here, we present a detailed characterization of the chemical and electronic properties of the precursor and the obtained conjugated polymers, showing how it is possible to harvest their characteristics for potential applications such as electrochromic surfaces and organic field-effect transistors.
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Affiliation(s)
- Marco Carlotti
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
- Centro per la Integrazione Della Strumentazione Dell'Università di Pisa (CISUP), University of Pisa Lungarno Pacinotti 43/44 56126 Pisa Italy
| | - Tommaso Losi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia Via R. Rubattino 81 20134 Milano Italy
| | - Francesco De Boni
- Materials Characterization Facility, Istituto Italiano di Tecnologia Via Morego 30 16163 Genova Italy
| | - Federico Maria Vivaldi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
| | - Esteban Araya-Hermosilla
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia Via Morego 30 16163 Genova Italy
| | - Andrea Pucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa Via G. Moruzzi 13 56124 Pisa Italy
- Centro per la Integrazione Della Strumentazione Dell'Università di Pisa (CISUP), University of Pisa Lungarno Pacinotti 43/44 56126 Pisa Italy
| | - Mario Caironi
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia Via R. Rubattino 81 20134 Milano Italy
| | - Virgilio Mattoli
- Center for Materials Interfaces, Istituto Italiano di Tecnologia Viale Rinaldo Piaggio 34 56025 Pontedera Italy
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3
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Tanaka H, Yasui T, Uyanik M, Ishihara K. 1,3-Migrative Ring Expansion of Spiroindolenines to Azepino[3,4- b]indoles. Org Lett 2023; 25:2377-2381. [PMID: 36847223 DOI: 10.1021/acs.orglett.3c00207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
We serendipitously found an unprecedented 5-to-7-membered ring expansion of 2-alkylspiroindolenines to azepinoindoles mediated by n-tetrabutylammonium fluoride. The starting materials can be easily prepared by the hypoiodite-catalyzed oxidative dearomative spirocyclization of indole derivatives. Mildly basic conditions and electron-deficient protecting groups for the amines were found to be crucial to promoting chemoselective reactions. Moreover, the ring expansion of aniline-derived spiroindolenines proceeds smoothly under much milder conditions using only a catalytic amount of cesium carbonate.
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Affiliation(s)
- Hiroki Tanaka
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Toshihiro Yasui
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Muhammet Uyanik
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
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4
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Tetramethylammonium Fluoride: Fundamental Properties and Applications in C-F Bond-Forming Reactions and as a Base. Catalysts 2022. [DOI: 10.3390/catal12020233] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Nucleophilic ionic sources of fluoride are essential reagents in the synthetic toolbox to access high added-value fluorinated building blocks unattainable by other means. In this review, we provide a concise description and rationale of the outstanding features of one of these reagents, tetramethylammonium fluoride (TMAF), as well as disclosing the different methods for its preparation, and how its physicochemical properties and solvation effects in different solvents are intimately associated with its reactivity. Furthermore, herein we also comprehensively describe its historic and recent utilization, up to December 2021, in C-F bond-forming reactions with special emphasis on nucleophilic aromatic substitution fluorinations with a potential sustainable application in industrial settings, as well as its use as a base capable of rendering unprecedented transformations.
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5
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Ali D, Amjad ST, Shafique Z, Naseer MM, Al-Rashida M, Sindhu TA, Iftikhar S, Shah MR, Hameed A, Iqbal J. Utilization of transition metal fluoride-based solid support catalysts for the synthesis of sulfonamides: carbonic anhydrase inhibitory activity and in silico study. RSC Adv 2022; 12:3165-3179. [PMID: 35425332 PMCID: PMC8979346 DOI: 10.1039/d1ra07844e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/04/2022] [Indexed: 11/30/2022] Open
Abstract
The applications of solid support catalysts in catalyzing organic reactions are well-evident. In the present study, we explored a transition metal fluoride (FeF3) adsorbed on molecular sieves (4 Å) as a solid support catalyst for the preparation of sulfonamides 3a–3o. The solid support catalyst was characterized via X-ray diffraction and AFM analysis. The catalyst was further explored for the synthesis of indoles 6a–h, 1H-tetrazoles and 1,4-dihydropyridines. The sulfonamides prepared herein were investigated for their potential to inhibit carbonic anhydrase (hCA II, hCA IX and hCA XII). All compounds were found to be active inhibitors with IC50 values in the low micromolar range. Some compounds were even found to be highly selective inhibitors. Compound 3i only inhibited hCA II (IC50 = 2.76 ± 1.1 μM) and had <27% inhibition against hCA IX and hCA XII. Similarly, 3e (IC50 = 0.63 ± 0.14 μM) only inhibited hCA XII and showed <31% inhibition against hCA II and hCA IX. Molecular docking studies were carried out to rationalize the ligand-binding site interactions. Given the lack of selective CA inhibitors, compounds 3e and 3i can provide significant leads for the further development of highly selective CA inhibitors. The applications of solid support catalysts in catalyzing organic reactions are well-evident.![]()
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Affiliation(s)
- Deedar Ali
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan
| | - Sayyeda Tayyeba Amjad
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus Abbottabad 22060 Pakistan
| | - Zainab Shafique
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus Abbottabad 22060 Pakistan
| | | | - Mariya Al-Rashida
- Department of Chemistry, Forman Christian College (A Chartered University) Ferozepur Road-54600 Lahore Pakistan
| | - Tayyaba Allamgir Sindhu
- Department of Chemistry, Forman Christian College (A Chartered University) Ferozepur Road-54600 Lahore Pakistan
| | - Shafia Iftikhar
- Department of Chemistry, University of Sahiwal Sahiwal 57000 Pakistan
| | - Muhammad Raza Shah
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan
| | - Abdul Hameed
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan .,Department of Chemistry, Forman Christian College (A Chartered University) Ferozepur Road-54600 Lahore Pakistan.,Department of Chemistry, University of Sahiwal Sahiwal 57000 Pakistan
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS University Islamabad, Abbottabad Campus Abbottabad 22060 Pakistan
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6
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Chandrasekaran R, Pulikkottil FT, Elama KS, Rasappan R. Direct synthesis and applications of solid silylzinc reagents. Chem Sci 2021; 12:15719-15726. [PMID: 35003603 PMCID: PMC8654096 DOI: 10.1039/d1sc06038d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/19/2021] [Indexed: 01/29/2023] Open
Abstract
The increased synthetic utility of organosilanes has motivated researchers to develop milder and more practical synthetic methods. Silylzinc reagents, which are typically the most functional group tolerant, are notoriously difficult to synthesize because they are obtained by a pyrophoric reaction of silyllithium, particularly Me3SiLi which is itself prepared by the reaction of MeLi and disilane. Furthermore, the dissolved LiCl in silylzinc may have a detrimental effect. A synthetic method that can avoid silyllithium and involves a direct synthesis of silylzinc reagents from silyl halides is arguably the simplest and most economical strategy. We describe, for the first time, the direct synthesis of PhMe2SiZnI and Me3SiZnI reagents by employing a coordinating TMEDA ligand, as well as single crystal XRD structures. Importantly, they can be obtained as solids and stored for longer periods at 4 °C. We also demonstrate their significance in cross-coupling of various free alkyl/aryl/alkenyl carboxylic acids with broader functional group tolerance and API derivatives. The general applicability and efficiency of solid Me3SiZnI are shown in a wide variety of reactions including alkylation, arylation, allylation, 1,4-addition, acylation and more.
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Affiliation(s)
- Revathi Chandrasekaran
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Vithura Thiruvananthapuram Kerala 695551 India
| | - Feba Thomas Pulikkottil
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Vithura Thiruvananthapuram Kerala 695551 India
| | - Krishna Suresh Elama
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Vithura Thiruvananthapuram Kerala 695551 India
| | - Ramesh Rasappan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram Vithura Thiruvananthapuram Kerala 695551 India
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7
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Tetrabutylammonium fluoride initiated anionic ring-opening polymerizations of N–sulfonyl aziridines. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109999] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Affiliation(s)
- Zachary A. Morrison
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Mark Nitz
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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9
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Lima DB, Santos PHV, Fiori P, Badshah G, Luz EQ, Seckler D, Rampon DS. Base‐Promoted Direct Chalcogenylation of 2‐Naphthols. ChemistrySelect 2019. [DOI: 10.1002/slct.201903251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- David B. Lima
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Pedro H. V. Santos
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Priscila Fiori
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Gul Badshah
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Eduardo Q. Luz
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Diego Seckler
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
| | - Daniel S. Rampon
- Laboratory of Polymers and Molecular Catalysis (LAPOCA)Department of ChemistryFederal University of Paraná-UFPR P. O. Box 19032 Curitiba, PR,81531-990 Brazil
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10
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Chen Y. Advances in the Synthesis of Methylated Products through Indirect Approaches. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yantao Chen
- Medicinal Chemistry, Research and Early DevelopmentCardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca 43183 Gothenburg Sweden
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11
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Pícha J, Fabre B, Buděšínský M, Hajduch J, Abdellaoui M, Jiráček J. Tri-Orthogonal Scaffolds for the Solid-Phase Synthesis of Peptides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jan Pícha
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Benjamin Fabre
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Jan Hajduch
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Mehdi Abdellaoui
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Jiří Jiráček
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
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12
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Isaac IO, Munir I, al-Rashida M, Ali SA, Shafiq Z, Islam M, Ludwig R, Ayub K, Khan KM, Hameed A. Novel acridine-based thiosemicarbazones as 'turn-on' chemosensors for selective recognition of fluoride anion: a spectroscopic and theoretical study. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180646. [PMID: 30109109 PMCID: PMC6083729 DOI: 10.1098/rsos.180646] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 05/25/2018] [Indexed: 05/09/2023]
Abstract
New thiosemicarbazide-linked acridines 3a-c were prepared and investigated as chemosensors for the detection of biologically and environmentally important anions. The compounds 3a-c were found selective for fluoride (F-) with no affinity for other anions, i.e. -OAc, Br-, I-, HSO4-, SO42-, PO43-, ClO3-, ClO4-, CN- and SCN-. Further, upon the gradual addition of a fluoride anion (F-) source (tetrabutylammonium fluoride), a well-defined change in colour of the solution of probes 3a-c was observed. The anion-sensing process was studied in detail via UV-visible absorption, fluorescence and 1H-NMR experiments. Moreover, during the synthesis of acridine probes 3a-c nickel fluoride (NiF2), a rarely explored transition metal fluoride salt, was used as the catalyst. Theoretical studies via density functional theory were also carried out to further investigate the sensing and anion (F-) selectivity pattern of these probes.
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Affiliation(s)
- Ibanga Okon Isaac
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Iqra Munir
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Mariya al-Rashida
- Department of Chemistry, Forman Christian College (A Chartered University), Ferozepur Road, Lahore, Pakistan
| | - Syed Abid Ali
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Zahid Shafiq
- Institute of Chemical Sciences, Organic Chemistry Division, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Muhammad Islam
- Institute of Chemical Sciences, Organic Chemistry Division, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Ralf Ludwig
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
- Department of Physical Chemistry, University of Rostock, Dr.-Lorenz-Weg 1, 18059 Rostock, Germany
| | - Khurshid Ayub
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Khyber Pakhtunkhwa 22060, Pakistan
| | - Khalid Mohammed Khan
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
- Department of Clinical Pharmacy, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, PO Box 31441, Dammam, Saudi Arabia
| | - Abdul Hameed
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
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13
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Iqbal N, Ali SA, Munir I, Khan S, Ayub K, Al-Rashida M, Islam M, Shafiq Z, Ludwig R, Hameed A. Acridinedione as selective flouride ion chemosensor: a detailed spectroscopic and quantum mechanical investigation. RSC Adv 2018; 8:1993-2003. [PMID: 35542621 PMCID: PMC9077206 DOI: 10.1039/c7ra11974g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/23/2020] [Accepted: 12/26/2017] [Indexed: 01/27/2023] Open
Abstract
The use of small molecules as chemosensors for ion detection is rapidly gaining popularity by virtue of the advantages it offers over traditional ion sensing methods. Herein we have synthesized a series of acridine(1,8)diones (7a-7l) and explored them for their potential to act as chemosensors for the detection of various anions such as fluoride (F-), acetate (OAc-), bromide (Br-), iodide (I-), bisulfate (HSO4 -), chlorate (ClO3 -), perchlorate (ClO4 -), cyanide (CN-), and thiocyanate (SCN-). Acridinediones were found to be highly selective chemosensors for fluoride ions only. To investigate in detail the mechanism of selective fluoride ion sensing, detailed spectroscopic studies were carried out using UV-visible, fluorescence and 1H NMR spectroscopy. Fluoride mediated (NH) proton abstraction of acridinedione was found to be responsible for the observed selective fluoride ion sensing. Quantum mechanical computational studies, using time dependent density functional theory (TDDFT) were also carried out, whereupon comparison of acridinedione interaction with fluoride and acetate ions explained the acridinedione selectivity for the detection of fluoride anions. Our results provide ample evidence and rationale for further modulation and exploration of acridinediones as non-invasive chemosensors for fluoride ion detection in a variety of sample types.
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Affiliation(s)
- Nafees Iqbal
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan +92-21-3481901 +92-21-99261701-2
| | - Syed Abid Ali
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan +92-21-3481901 +92-21-99261701-2
| | - Iqra Munir
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan +92-21-3481901 +92-21-99261701-2
| | - Saima Khan
- Department of Chemistry, COMSATS Institute of Information Technology Abbottabad KPK Pakistan 22060
| | - Khurshid Ayub
- Department of Chemistry, COMSATS Institute of Information Technology Abbottabad KPK Pakistan 22060
| | - Mariya Al-Rashida
- Department of Chemistry, Forman Christian College, A Chartered University Ferozepur Road Lahore Pakistan
| | - Muhammad Islam
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan Pakistan
| | - Zahid Shafiq
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan Pakistan
- Department of Chemistry, Quaid-i-Azam University Islamabad 45320 Pakistan
| | - Ralf Ludwig
- Leibniz-Institut für Katalyse e. V. an der Universität Rostock Albert-Einstein-Str. 29a 18059 Rostock Germany
- Department of Physical Chemistry, University of Rostock Dr.-Lorenz-Weg 1 18059 Rostock Germany
| | - Abdul Hameed
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi-75270 Pakistan +92-21-3481901 +92-21-99261701-2
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14
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Craig R, Litvajova M, Cronin SA, Connon SJ. Enantioselective acyl-transfer catalysis by fluoride ions. Chem Commun (Camb) 2018; 54:10108-10111. [DOI: 10.1039/c8cc05692g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The asymmetric nucleophilic catalysis by fluoride ions at a carbon-based electrophile has been demonstrated for the first time.
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Affiliation(s)
- Ryan Craig
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin
- Dublin 2
- Ireland
| | - Mili Litvajova
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin
- Dublin 2
- Ireland
| | - Sarah A. Cronin
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin
- Dublin 2
- Ireland
| | - Stephen J. Connon
- School of Chemistry Trinity Biomedical Sciences Institute, Trinity College Dublin
- Dublin 2
- Ireland
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15
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Advances in the TBAF-induced aldol-type addition of α-trialkylsilyl-α-diazoacetones: TIPS versus TES. CR CHIM 2017. [DOI: 10.1016/j.crci.2016.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Mu D, Gao F, Chen G, He G. Palladium-Catalyzed β-C–H Arylation of Alkyl Carboxamides with Sterically Hindered Aryl Iodides Using ortho-Sulfinyl Aniline Auxiliaries. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03661] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Delong Mu
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Fang Gao
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
- Department
of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Gang He
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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17
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Ghumro SA, Saleem S, al-Rashida M, Iqbal N, Alharthy RD, Ahmed S, Moin ST, Hameed A. N,N-Dimethylpyridin-4-amine (DMAP) based ionic liquids: evaluation of physical properties via molecular dynamics simulations and application as a catalyst for Fisher indole and 1H-tetrazole synthesis. RSC Adv 2017. [DOI: 10.1039/c7ra06824g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
N,N-dimethylpyridin-4-amine (DMAP) based ionic liquids (ILs) as new and efficient catalysts for the facile synthesis of indoles (via Fischer indole synthesis), and 1H-tetrazoles (via click chemistry).
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Affiliation(s)
- Sarfaraz Ali Ghumro
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
| | - Sana Saleem
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
| | - Mariya al-Rashida
- Department of Chemistry
- Forman Christian College
- A Chartered University
- Lahore
- Pakistan
| | - Nafees Iqbal
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
| | - Rima D. Alharthy
- Department of Chemistry
- Science and Arts College
- Rabigh Campus
- King Abdulaziz University
- Jeddah
| | - Shakil Ahmed
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
| | - Syed Tarique Moin
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
| | - Abdul Hameed
- H. E. J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi-75270
- Pakistan
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18
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Phatake RS, Mullapudi V, Wakchaure VC, Ramana CV. Fluoride-Mediated Dephosphonylation of α-Diazo-β-carbonyl Phosphonates. Org Lett 2016; 19:372-375. [PMID: 28035831 DOI: 10.1021/acs.orglett.6b03573] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The possibility of fluoride-mediated selective dephosphonylation of α-diazo-β-carbonyl phosphonates such as the Ohira-Bestmann reagent has been proposed and executed. The resulting α-diazocarbonyl intermediates undergo a (3 + 2)-cycloaddition at room temperature with conjugated olefins and benzynes. Interestingly, under the current conditions, the resulting cycloaddition products underwent either N-acylation (with excess α-diazo-β-carbonyl phosphonates) or Michael addition (with conjugated olefins).
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Affiliation(s)
- Ravindra S Phatake
- Organic Chemistry Division, CSIR-National Chemical Laboratory , Dr. HomiBhabha Road, Pune 411008, India
| | - Venkannababu Mullapudi
- Organic Chemistry Division, CSIR-National Chemical Laboratory , Dr. HomiBhabha Road, Pune 411008, India
| | - Vivek C Wakchaure
- Organic Chemistry Division, CSIR-National Chemical Laboratory , Dr. HomiBhabha Road, Pune 411008, India
| | - Chepuri V Ramana
- Organic Chemistry Division, CSIR-National Chemical Laboratory , Dr. HomiBhabha Road, Pune 411008, India
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19
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Patzelt C, Pöthig A, Gulder T. Iodine(III)-Catalyzed Cascade Reactions Enabling a Direct Access to β-Lactams and α-Hydroxy-β-amino Acids. Org Lett 2016; 18:3466-9. [DOI: 10.1021/acs.orglett.6b01658] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christoph Patzelt
- Department of Chemistry and
Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Alexander Pöthig
- Department of Chemistry and
Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Tanja Gulder
- Department of Chemistry and
Catalysis Research Center (CRC), Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
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