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Ipe RM, Nag P, Mori S, Nambiar AP, Vennapusa SR, Gokulnath S. Synthesis, Structure, and Optical Properties of a Bis-Macrocycle Derived from a Highly Emissive 1,3,6,8-Tetra(1 H-pyrrol-2-yl)pyrene. J Org Chem 2022; 87:15022-15030. [PMID: 36321998 DOI: 10.1021/acs.joc.2c01362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A tetra-functionalized pyrene precursor 4b is prepared using the Suzuki-Miyaura coupling of 1,3,6,8-tetrabromopyrene with N-Boc-2-pyrroleboronic acid. 4b displayed a blue emission with a high quantum yield (ϕF = 0.89). 4b is subjected to [3 + 2] Lewis acid-catalyzed condensation with 2,2'-bithiophene-dialcohol 5, affording a planar bis-N2S2 internally linked with pyrene. The single-crystal X-ray structure of bis-N2S2 revealed a planar conformation with all of the pyrrolic nitrogens and thiophenic sulfurs pointing toward the macrocyclic core. Further, the reduction of bis-N2S2 was attempted in the presence of Zn/NH4Cl at room temperature in CHCl3. A sharp color change from pink to brown was observed presumably due to the formation of its reduced congener bis-N2S2-2H. However, the reduced species was found to revert back to its oxidized form over a period of 25 min in CHCl3. Density functional theory (DFT) studies reveal that the two monocyclic halves of bis-N2S2-2H exhibit differences in aromaticity depending on amino and imino pyrroles present inside each individual core. Such a conversion was also monitored by ultraviolet-visible (UV-vis) absorption spectral studies, and the exact composition of bis-N2S2-2H was confirmed by High-resolution/mass spectrometry (HR/MS) analysis. Experimental and theoretical studies reveal a weak aromatic character of bis-N2S2 due to the absence of global conjugation.
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Affiliation(s)
- Ruth Mariam Ipe
- Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Vithura, Thiruvananthapuram, Kerala 695-551, India
| | - Probal Nag
- Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Vithura, Thiruvananthapuram, Kerala 695-551, India
| | - Shigeki Mori
- Division of Material Science, Advanced Research Support Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Anjana P Nambiar
- Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Vithura, Thiruvananthapuram, Kerala 695-551, India
| | - Sivaranjana Reddy Vennapusa
- Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Vithura, Thiruvananthapuram, Kerala 695-551, India
| | - Sabapathi Gokulnath
- Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala P.O., Vithura, Thiruvananthapuram, Kerala 695-551, India
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Tigreros A, Portilla J. Ecological and economic effort analysis in molecular sensor development used for optical detection of cyanide ions. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexis Tigreros
- Universidad de Los Andes Chemistry , Carrera 1 No. 18A-10 111711 Bogotá DC COLOMBIA
| | - Jaime Portilla
- Universidad de los Andes Bogotá D. C. Cra. 1 No. 18 A 12, Edificio Q, Of. 830Call 95 No. 71 - 11, Apto 204-1 111711 Bogotá COLOMBIA
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Sendh J, Singh MP, Baruah JB. 5-[(Pyren-9-ylmethyl)amino]isophthalic acid with nitrogen containing heterocycles: stacking, N–H⋯π interactions and photoluminescence. CrystEngComm 2021. [DOI: 10.1039/d1ce01099a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Synthons guided the types of N–H⋯π interactions and stacking to cause quenching of emissions.
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Affiliation(s)
- Jagajiban Sendh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati – 781 039, Assam, India
| | - Munendra Pal Singh
- Research & Development Centre, Sun Pharmaceutical Industries Ltd., Gurgaon – 122015, Haryana, India
| | - Jubaraj B. Baruah
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati – 781 039, Assam, India
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Hussein EM, El Guesmi N, Ahmed SA. Exploiting a multicomponent domino reaction strategy for the tailoring of versatile environmentally sensitive fluorophore-based nicotinonitriles incorporating pyrene and fluorene moieties. RSC Adv 2019; 9:40118-40130. [PMID: 35541404 PMCID: PMC9076224 DOI: 10.1039/c9ra09379f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 11/21/2019] [Indexed: 01/02/2023] Open
Abstract
A simplistic and highly effective protocol for the synthesis of a new class of poly-functionalized innovative nicotinonitriles incorporating pyrene and/or fluorene moieties has been developed through the domino four-component condensation reaction of 1-(pyren-1-yl)ethanone/1-(9H-fluoren-2-yl)ethanone, numerous aromatic aldehydes, and 3-oxo-3-(pyren-1-yl)propanenitrile/3-(9H-fluoren-2-yl)-3-oxopropanenitrile and ammonium acetate in acetic acid as a reaction medium. The advantages of this approach are the short reaction time, excellent yield, and the easy experimental workup that affords substrate diversity and operative competence under metal-free reaction conditions for the formation of C–C and C–N bonds. The substituent effects on the photophysical property-based absorption and the emission of the synthesized compounds in dichloromethane have been well-investigated. Strong absorption quenching of around 100 nm was observed when substitution of the benzene ring at the C4-position of the pyridine moiety occurred with an electron-donating (–N(CH3)2) group. All of the newly synthesized nicotinonitrile derivatives showed strong blue-green fluorescence emission with maxima in the range between 420–630 nm. These highly pronounced emission spectra will help this family of compounds to find application in many areas and the field of materials science. A simplistic and highly effective protocol for the synthesis of a new class of poly-functionalized innovative nicotinonitriles incorporating pyrene and/or fluorene moieties has been developed through the domino four-component condensation reaction.![]()
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Affiliation(s)
- Essam M Hussein
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia .,Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
| | - Nizar El Guesmi
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia .,Département de Chimie, Faculté des Sciences de Monastir, Avenue de L'Environnement 5019 Monastir Tunisia
| | - Saleh A Ahmed
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia .,Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
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El Guesmi N, Hussein EM, Ahmed SA. MCM-SO3H catalyzed synthesis of environment-sensitive fluorophores incorporating pyrene moiety: Optimization, fluorescence emission and theoretical studies. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Valsange NG, Wong FL, Shinde D, Lee CS, Roy VAL, Manzhos S, Feron K, Chang S, Katoh R, Sonar P, Wadgaonkar PP. A new pyrene cored small organic molecule with a flexible alkyl spacer: a potential solution processable blue emitter with bright photoluminescence. NEW J CHEM 2017. [DOI: 10.1039/c7nj01921a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new pyrene cored small organic molecule exhibiting a high PLQY and blue emission was designed and synthesized.
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