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Tan Y, Ni P, Jiang WJ, Fu Y, Ding Q. Direct Transamidation of Thioamides with Amines via Acetophenone-Promoted Enamine Catalysis under Metal-Free Conditions. J Org Chem 2024; 89:2939-2950. [PMID: 38381084 DOI: 10.1021/acs.joc.3c02352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Herein, we developed a highly selective, efficient, and simple method for direct transamidation of thioamides with amines, promoted by commercially available acetophenone under metal-/solvent-free conditions. The reaction tolerated a wide range of functional groups and substrates, including single- or double-thioamides, benzylamines, or alkyl/cycloalkyl-substituted aliphatic amines. The present protocol can be applied to gram-scale in good yields. In addition, the Pt-/Ni-complexes of double-transamidation products were obtained in good to excellent yields. The investigation of photophysical properties indicated that the fluorescence spectra of Pt-complexes showed an emission band centered at 550-750 nm and exhibited red fluorescence when irradiated by a UV lamp (365 nm).
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Affiliation(s)
- Yuxing Tan
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Penghui Ni
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Wu-Jiu Jiang
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
- Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, Hunan, PR China
| | - Yang Fu
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
| | - Qiuping Ding
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Key Laboratory for Green Chemistry of Jiangxi Province, Jiangxi Normal University, Nanchang 330022 Jiangxi, China
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2
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Brotherton AR, Shibu A, Meadows JC, Sayresmith NA, Brown CE, Ledezma AM, Schmedake TA, Walter MG. Leveraging Coupled Solvatofluorochromism and Fluorescence Quenching in Nitrophenyl-Containing Thiazolothiazoles for Efficient Organic Vapor Sensing. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2205729. [PMID: 37186373 DOI: 10.1002/advs.202205729] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/26/2023] [Indexed: 05/17/2023]
Abstract
Solvatofluorochromic molecules provide strikingly high fluorescent outputs to monitor a wide range of biological, environmental, or materials-related sensing processes. Here, thiazolo[5,4-d]thiazole (TTz) fluorophores equipped with simple alkylamino and nitrophenyl substituents for solid-state, high-performance chemo-responsive sensing applications are reported. Nitroaromatic substituents are known to strongly quench dye fluorescence, however, the TTz core subtly modulates intramolecular charge transfer (ICT) enabling strong, locally excited-state fluorescence in non-polar conditions. In polar media, a planar ICT excited-state shows near complete quenching, enabling a twisted excited-state emission to be observed. These unique fluorescent properties (spectral shifts of 0.13 - 0.87 eV and large transition dipole moments Δµ = 20.4 - 21.3 D) are leveraged to develop highly sought-after chemo-responsive, organic vapor optical sensors. The sensors are developed by embedding the TTz fluorophores within a poly(styrene-isoprene-styrene) block copolymer to form fluorescent dye/polymer composites (ΦF = 70 - 97%). The composites respond reversibly to a comprehensive list of organic solvents and show low vapor concentration sensing (e.g., 0.04% solvent saturation vapor pressure of THF - 66 ppm). The composite films can distinguish between solvent vapors with near complete fluorescent quenching observed when exposed to their saturated solvent vapor pressures, making this an extremely promising material for optical chemo-responsive sensing.
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Affiliation(s)
- Andrew R Brotherton
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Abhishek Shibu
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Jared C Meadows
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Nickolas A Sayresmith
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Chloe E Brown
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Ana Montoya Ledezma
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Thomas A Schmedake
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
| | - Michael G Walter
- Department of Chemistry, University of North Carolina at Charlotte, Charlotte, NC, 28223, USA
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3
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Pashameah RA, Alshareef M, Alharbi A, Alsoliemy A, Abumelha HM, Saad FA, El-Metwaly NM. Synthesis of (Tricyanofuran-3-ylmethylene)hydrazinyl thiazole-containing chromophore, study of its photophysical properties, solvatochromism and TD-DFT computations. LUMINESCENCE 2022; 37:1751-1759. [PMID: 35906732 DOI: 10.1002/bio.4352] [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: 05/19/2022] [Revised: 06/24/2022] [Accepted: 07/28/2022] [Indexed: 11/11/2022]
Abstract
The chromophore 2-2-(3-cyano-5,5-dimethyl-4-((2-(thiazol-2-yl)hydrazono)methyl)-furan-2(5H)-ylidene)malononitrile (TzHTCF) was prepared by diazo-coupling of diazotized 2-aminothiazole with 3-cyano-2-(dicyanomethylene)-4,5,5-trimethylfuran (TCF). The TzHTCF absorption solvatochromism, in different polarity solvents, offered ΔEmax = +4.74 where the positive sign implied red shift occurrence and the TzHTCF lowest excited state was more polar than its ground one. While, the TzHTCF fluorescence spectrum afforded λem , in 416-670 nm range, and was more dependent on the solvent polarity than the absorption λmax , despite both exhibited red shift by 24 and 254 nm, respectively. To discover the Stokes' shift ( ∆ ν ¯ ) behaviour of TzHTCF derivative, Lippert-Mataga and linear solvation-energy relationship (LSER) formulations have been utilized where the LSER displayed better results than the Lippert-Mataga (R2 = 0. 9931). Furthermore, the LSER showed that the absorption and fluorescence solvatochromic behaviours were dependent on the solvent's hydrogen-bond donor (α) and acceptor (β), along with the solvent's polarizability (π*). Moreover, DFT calculations showed that TzHTCF has a planar configuration and its simulated absorption and emission spectra in DMSO revealed that λmax was primarily originated from HOMO→LUMO and HOMO-1→LUMO transitions, respectively.
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Affiliation(s)
- Rami A Pashameah
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia
| | - Mubark Alshareef
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia
| | - Arwa Alharbi
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia
| | - Amerah Alsoliemy
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia
| | - Hana M Abumelha
- Department of Chemistry ,College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Fawaz A Saad
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia
| | - Nashwa M El-Metwaly
- Department of Chemistry, Faculty of Applied Science, Umm Al Qura University, Makkah, Saudi Arabia.,Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street, Egypt
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Puji Pamungkas KK, Maruyama T, Murai T. 5- N-Arylaminothiazoles with pyridyl groups and their first-row transition metal complexes: synthesis, photophysical properties, and Zn sensing. RSC Adv 2022; 12:14698-14706. [PMID: 35702202 PMCID: PMC9109715 DOI: 10.1039/d2ra01694j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/09/2022] [Indexed: 12/02/2022] Open
Abstract
A series of 5-N-arylaminothiazoles were synthesized with facile diversity-oriented synthesis from readily available starting materials via the reaction of thioamide dianions and thioformamides. The introduction of various substituents at the 2-position of a thiazole ring (i.e., 2-pyridyl, 4-methylpyridyl, and phenyl groups) and on the nitrogen atom (i.e., p-tolyl and phenyl groups) significantly influenced the absorption and emission spectra of the isolated compounds. X-ray analysis confirmed that the substituents at the amino site were twisted from a thiazole ring, while the formation of its nickel complex showed dinuclear metal complexes bridged with chlorine atoms. Moreover, the formation of zinc-thiazole complexes showed enhanced emission properties in solution and noticeable emission in a solid state. In addition, thiazole-bridged dypyrromethene type ligands showed high selectivity toward Zn+2, which make them good candidates for zinc sensing.
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Affiliation(s)
- Khurnia Krisna Puji Pamungkas
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University Yanagido Gifu 501-1193 Japan
| | - Toshifumi Maruyama
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University Yanagido Gifu 501-1193 Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University Yanagido Gifu 501-1193 Japan
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5
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Goulart TAC, Back DF, Moura E Silva S, Zeni G. Palladium-Catalyzed Cascade 5- endo-dig Cyclization of Ynamides to Form 4-Alkynyloxazolones. J Org Chem 2022; 87:3341-3351. [PMID: 35167299 DOI: 10.1021/acs.joc.1c02978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The selective synthesis of 4-alkynyloxazolones and their further applications as substrates to electrophile-promoted nucleophilic cyclization have been developed. The reaction of ynamides with terminal alkynes proceeded smoothly to give 4-alkynyloxazolones in the presence of a catalytic amount of palladium(II) acetate. The products were obtained with the sequential formation of new C-C and C-O bonds via a cascade procedure. The first step involved a carbon-oxygen bond formation, via a 5-endo-dig closure, which was confirmed by X-ray analyses of the crystalline sample. Subsequently, the reaction of 4-alkynyloxazolones with an electrophilic selenium source gave 3-phenylselanyl benzofuran derivatives via an electrophile-promoted nucleophilic cyclization.
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Affiliation(s)
- Tales A C Goulart
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Davi Fernando Back
- Laboratório de Materiais Inorgânicos, Departamento de Química, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
| | - Sidnei Moura E Silva
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM, Santa Maria, Rio Grande do Sul 97105-900, Brazil
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6
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Lian F, Xu K, Zeng C. Indirect Electrosynthesis with Halogen Ions as Mediators. CHEM REC 2021; 21:2290-2305. [PMID: 33728812 DOI: 10.1002/tcr.202100036] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 12/26/2022]
Abstract
Organic electrosynthesis has gained increasing research interest as it harvests electric current as redox regents, thereby providing a sustainable alternative to conventional approaches. Compared with direct electrosynthesis, indirect electrosynthesis employs mediator(s) to lower the overpotentials for substrate activation, and enhance the reaction efficiency and functional group compatibility by shifting the heterogenous electron transfer process to be homogenous. As one of the most versatile and cost-efficient mediators, halogen mediators are always combined with an irreversible halogenation reaction. Thus, the electrochemical reaction between halogen mediators and substrates doesn't directly controlled by the two standard potentials difference. In this account, our recent developments in the area of halogen-mediated indirect electrosynthesis are summarized. The anodically generated halogen species from halogenide salts have the abilities to undergo electron-transfer (ET) or hydrogen-atom- transfer (HAT) processes. The reaction features, scopes, limitations, and mechanistic rationalisations are discussed in this account. We hope our studies will contribute to the future developments to broaden the scope of halogen-mediated electrosynthesis.
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Affiliation(s)
- Fei Lian
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China
| | - Kun Xu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China
| | - Chengchu Zeng
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, China
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7
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Murai T, Krisna Puji Pamungkas K, Hattori S, Maruyama T, Ebihara M. Synthesis of 5-H Thiazoles via Thioamide Dianions with Thioformamides: Pyridylmethyl Group on the Nitrogen Atom of Thiazole Promotes the Formation of 5-H Thiazoles. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Tsuchiya Y, Yamaguchi K, Miwa Y, Kutsumizu S, Minoura M, Murai T. N,N-Diarylthiazol-5-amines: Structure-Specific Mechanofluorochromism and White Light Emission in the Solid State. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200083] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuki Tsuchiya
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Kirara Yamaguchi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Yohei Miwa
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Shoichi Kutsumizu
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Mao Minoura
- Department of Chemistry, Graduate School of Science, Rikkyo University, Nishi-ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
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9
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Li Y, Sun CC, Zeng CC. Electrochemical synthesis of thiazoles from 2,5-dihydrothiazolines mediated by bromide/tetrachlorohydroquinone dual redox catalysts. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.113941] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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10
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Murai T, Nakatsu Y, Tsuchiya Y, Yamaguchi K, Maruyama T, Miwa Y, Kutsumizu S. 5-Amino-2-thiazolylpyridine N-Oxides: Synthesis and Properties. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)51] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Godugu K, Gundala TR, Bodapati R, Yadala VDS, Loka SS, Nallagondu CGR. Synthesis, photophysical and electrochemical properties of donor–acceptor type hydrazinyl thiazolyl coumarins. NEW J CHEM 2020. [DOI: 10.1039/d0nj00082e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A practical green MCR strategy has been developed for the synthesis of D–A type hydrazinyl thiazolyl coumarins catalyzed by an environmentally compatible MMT K10 clay in water at RT.
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Affiliation(s)
- Kumar Godugu
- Department of Chemistry
- School of Physical Sciences
- Yogi Vemana University
- Kadapa 516 003
- India
| | | | - Ramakrishna Bodapati
- School of Chemistry
- University of Hyderabad
- Central University P.O
- Hyderabad 500 046
- India
| | | | - Subramanyam Sarma Loka
- Department of Chemistry
- School of Physical Sciences
- Yogi Vemana University
- Kadapa 516 003
- India
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12
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Sayresmith NA, Saminathan A, Sailer JK, Patberg SM, Sandor K, Krishnan Y, Walter MG. Photostable Voltage-Sensitive Dyes Based on Simple, Solvatofluorochromic, Asymmetric Thiazolothiazoles. J Am Chem Soc 2019; 141:18780-18790. [PMID: 31660737 DOI: 10.1021/jacs.9b08959] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A family of asymmetric thiazolo[5,4-d]thiazole (TTz) fluorescent dye sensors has been developed, and their photophysical sensing properties are reported. The π-conjugated, TTz-bridged compounds are synthesized via a single-step, double condensation/oxidation of dithiooxamide and two different aromatic aldehydes: one with strong electron-donating characteristics and one with strong electron-accepting characteristics. The four reported dyes include electron-donating moieties (N,N-dibutylaniline and N,N-diphenylaniline) matched with three different electron-accepting moieties (pyridine, benzoic acid, and carboxaldehyde). The asymmetric TTz derivatives exhibit strong solvatofluorochromism with Stokes shifts between 0.269 and 0.750 eV (2270 and 6050 cm-1) and transition dipole moments (Δμ = 13-18 D) that are among the highest reported for push-pull dyes. Fluorescence quantum yields are as high as 0.93 in nonpolar solvents, and the fluorescence lifetimes (τF) vary from 1.50 to 3.01 ns depending on the solvent polarity. In addition, thermofluorochromic studies and spectrophotometric acid titrations were performed and indicate the possibility of using these dyes as temperature and/or acid sensors. In vitro cell studies indicate good cell membrane localization, negligible cytotoxicity, promising voltage sensitivities, and photostabilities that are 4 times higher than comparable dyes. Their ease of synthesis and purification, remarkable photophysical properties, and chemically sensitive TTz π-bridge make these asymmetric dye derivatives attractive for environmental and biological sensing or similar molecular optoelectronic applications.
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Affiliation(s)
- Nickolas A Sayresmith
- Department of Chemistry , University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Anand Saminathan
- Department of Chemistry and Grossman Institute of Neuroscience, Quantitative Biology and Human Behavior , University of Chicago , Chicago , Illinois 60637 , United States
| | - Joshua K Sailer
- Department of Chemistry , University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Shannon M Patberg
- Department of Chemistry , University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Kristin Sandor
- Department of Chemistry , University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
| | - Yamuna Krishnan
- Department of Chemistry and Grossman Institute of Neuroscience, Quantitative Biology and Human Behavior , University of Chicago , Chicago , Illinois 60637 , United States
| | - Michael G Walter
- Department of Chemistry , University of North Carolina at Charlotte , Charlotte , North Carolina 28223 , United States
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13
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Murai T. Replacement of Elements, from Unexpected Encounter to Accidental Departure. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.1030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
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14
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Shibahara F. Direct Functionalizations of Carbon-Hydrogen Bonds Catalyzed by Palladium/Bidentate Nitrogen-based Ligand Complexes. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fumitoshi Shibahara
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
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15
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Pérez-Caaveiro C, Oliva MM, López Navarrete JT, Pérez Sestelo J, Martínez MM, Sarandeses LA. Synthesis of D–A–A and D–A–D Pyrimidine π-Systems Using Triorganoindium Reagents: Optical, Vibrational, and Electrochemical Studies. J Org Chem 2019; 84:8870-8885. [DOI: 10.1021/acs.joc.9b00643] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Cristina Pérez-Caaveiro
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - María Moreno Oliva
- Departamento de Química Física, Universidad de Málaga, E-29071 Málaga, Spain
| | | | - José Pérez Sestelo
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - M. Montserrat Martínez
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
| | - Luis A. Sarandeses
- Centro de Investigaciones Científicas Avanzadas (CICA) and Departamento de Química, Universidade da Coruña, E-15071 A Coruña, Spain
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16
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Murai T, Yoshihara M, Yamaguchi K, Minoura M. 2‐(2‐Hydroxyphenyl)‐5‐aminothiazoles: Synthesis and Properties Involving Dual Emissions. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900194] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University Yanagido Gifu 50-1193 Japan
| | - Mari Yoshihara
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University Yanagido Gifu 50-1193 Japan
| | - Kirara Yamaguchi
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University Yanagido Gifu 50-1193 Japan
| | - Mao Minoura
- Department of ChemistryGraduate School of ScienceRikkyo University Nishi-ikebukuro, Toshima-ku Tokyo 171-8501 Japan
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17
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Weyer N, Guthardt R, Correia Bicho BA, Oetzel J, Bruhn C, Siemeling U. Stable N-Heterocyclic Germylenes of the Type [Fe{(η5
-C5
H4
)NR
}2
Ge] and Their Oxidation Reactions with Sulfur, Selenium, and Diphenyl Diselenide. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nadine Weyer
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
| | - Robin Guthardt
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
| | - Bruno A. Correia Bicho
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
| | - Jan Oetzel
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
| | - Clemens Bruhn
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
| | - Ulrich Siemeling
- Institute of Chemistry; University of Kassel; Heinrich-Plett-Str. 40 34132 Kassel Germany
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18
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Tong W, Li WH, He Y, Mo ZY, Tang HT, Wang HS, Pan YM. Palladium-Metalated Porous Organic Polymers as Recyclable Catalysts for the Chemioselective Synthesis of Thiazoles from Thiobenzamides and Isonitriles. Org Lett 2018; 20:2494-2498. [PMID: 29620903 DOI: 10.1021/acs.orglett.8b00886] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two types of thiazole derivatives are synthesized through a multistep cascade sequence with Pd-metalated phosphorus-doped porous organic polymers (POPs) as heterogeneous catalysts. The POPs could be used as both ligands and catalyst supports. No obvious aggregation and loss of any catalytic activity of the catalysts were observed after 10 runs of the reaction. More importantly, imidazo[4,5- d]thiazoles, which are a new class of thiazole derivatives, could be obtained through K2CO3-promoted intramolecular cyclization of the synthesized polysubstituted thiazoles. Furthermore, the in vitro anticancer activity of these new compounds were tested with MTT assay, and compound 4b exhibited good antitumor activity toward T-24 and A549 cells with IC50 values of 10.3 ± 0.8 and 11.8 ± 0.5 μM, respectively. In addition, the action mechanism of 4b on tumor cells was determined.
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Affiliation(s)
- Wei Tong
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Wen-Hao Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Yan He
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Zu-Yu Mo
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Hai-Tao Tang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Heng-Shan Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
| | - Ying-Ming Pan
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources , School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University , Guilin 541004 , People's Republic of China
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19
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Radhakrishnan R, Sreejalekshmi KG. Computational Design, Synthesis, and Structure Property Evaluation of 1,3-Thiazole-Based Color-Tunable Multi-heterocyclic Small Organic Fluorophores as Multifunctional Molecular Materials. J Org Chem 2018; 83:3453-3466. [DOI: 10.1021/acs.joc.7b02978] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rakesh Radhakrishnan
- Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala Post, Thiruvananthapuram 695 547, India
| | - K. G. Sreejalekshmi
- Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala Post, Thiruvananthapuram 695 547, India
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20
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Manickam S, Balijapalli U, Sathiyanarayanan KI. SnCl2-catalyzed synthesis of dihydro-5H-benzo[f]pyrazolo[3,4-b]quinoline and dihydroindeno[2,1-b]pyrazolo[4,3-e]pyridine with high fluorescence and their photophysical properties. NEW J CHEM 2018. [DOI: 10.1039/c7nj03654j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A series of pyrazoloquinoline and pyrazolopyridine based derivatives bearing donor–acceptor (D–A) substituent groups on the phenyl ring, was synthesized by a mild reaction condition.
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21
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Murai T, Furukawa H, Yamaguchi K. Synthesis and Photophysical Properties of 5-N-Arylaminothiazoles with Sulfur-Containing Groups on the Aromatic Ring at the 2-Position. HETEROCYCLES 2018. [DOI: 10.3987/com-18-s(t)28] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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22
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Kato SI, Jin S, Kimura T, Yoshikawa N, Nara D, Imamura K, Shiota Y, Yoshizawa K, Katoono R, Yamanobe T, Uehara H, Nakamura Y. Trithiazolyl-1,3,5-triazines bearing decyloxybenzene moieties: synthesis, photophysical and electrochemical properties, and self-assembly behavior. Org Biomol Chem 2018; 16:3584-3595. [DOI: 10.1039/c8ob00471d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We synthesized the first members of trithiazolyl-1,3,5-triazines that combine attractive photophysical and self-assembling properties.
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23
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Lugovik KI, Popova AV, Eltyshev AK, Benassi E, Belskaya NP. Synthesis of Thiazoles Bearing Aryl Enamine/Aza-enamine Side Chains: Effect of the π-Conjugated Spacer Structure and Hydrogen Bonding on Photophysical Properties. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700518] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kseniya I. Lugovik
- Ural Federal University; 19 Mira Str. 620002 Yekaterinburg Russian Federation
| | | | | | - Enrico Benassi
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
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24
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Abás S, Moens U, Escolano C. Facile microwave-assisted synthesis of thioformamides from isocyanides and carbon disulfide. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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25
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Murai T, Yamaguchi K, Hayano T, Maruyama T, Kawai K, Kawakami H, Yashita A. Synthesis and Photophysical Properties of 5-N-Arylamino-4-methylthiazoles Obtained from Direct C–H Arylations and Buchwald–Hartwig Aminations of 4-Methylthiazole. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00128] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Toshiaki Murai
- Department of Chemistry
and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Kirara Yamaguchi
- Department of Chemistry
and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Teppei Hayano
- Department of Chemistry
and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Toshifumi Maruyama
- Department of Chemistry
and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Koji Kawai
- Miyoshi Oil & Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-Ku, Tokyo 124-8510, Japan
| | - Hayato Kawakami
- Miyoshi Oil & Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-Ku, Tokyo 124-8510, Japan
| | - Akira Yashita
- Miyoshi Oil & Fat Co., Ltd., 4-66-1 Horikiri, Katsushika-Ku, Tokyo 124-8510, Japan
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26
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Yamaguchi K, Murai T, Kutsumizu S, Miwa Y, Ebihara M, Guo J, Tokitoh N. Experimental and Theoretical Examination of the Radical Cations Obtained from the Chemical and Electrochemical Oxidation of 5-Aminothiazoles. ChemistryOpen 2017; 6:282-287. [PMID: 28413765 PMCID: PMC5390811 DOI: 10.1002/open.201700016] [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: 01/23/2017] [Indexed: 11/11/2022] Open
Abstract
Chemical or electrochemical one-electron oxidation of 5-N-arylaminothiazoles was found to afford stable radical cations. For chemical oxidation, 1 equivalent of [(4-BrC6H4)3N][SbCl6] (Magic Blue, MB) was added to CH2Cl2 solutions of the thiazoles, and the thus-obtained radicals showed light absorption in the near-infrared region. Electrochemical oxidation also led to bathochromic shifts in the absorption bands, and the obtained spectra were similar to those derived from the chemically oxidized species. These radicals afforded electron paramagnetic resonance (EPR) spectra that are consistent with the notion of stable nitrogen radicals (half-life≤385 h). The EPR spectrum of a thiazole containing 4-dimethylaminophenyl groups on the nitrogen atom at the 5-position changed significantly upon adding >3 equivalents of MB. Details of the electronic structures of the experimentally obtained radical cations were generated from theoretical calculations.
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Affiliation(s)
- Kirara Yamaguchi
- Department of Chemistry and Biomolecular Science, Faculty of EngineeringGifu University, YanagidoGifu501–1193Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of EngineeringGifu University, YanagidoGifu501–1193Japan
| | - Shoichi Kutsumizu
- Department of Chemistry and Biomolecular Science, Faculty of EngineeringGifu University, YanagidoGifu501–1193Japan
| | - Yohei Miwa
- Department of Chemistry and Biomolecular Science, Faculty of EngineeringGifu University, YanagidoGifu501–1193Japan
| | - Masahiro Ebihara
- Department of Chemistry and Biomolecular Science, Faculty of EngineeringGifu University, YanagidoGifu501–1193Japan
| | - Jing‐Dong Guo
- Institute for Chemical ResearchKyoto University, Gokasho UjiKyoto611-0011Japan
| | - Norihiro Tokitoh
- Institute for Chemical ResearchKyoto University, Gokasho UjiKyoto611-0011Japan
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27
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Yamaguchi K, Murai T, Tsuchiya Y, Miwa Y, Kutsumizu S, Sasamori T, Tokitoh N. Pyridinium 5-aminothiazoles: specific photophysical properties and vapochromism in halogenated solvents. RSC Adv 2017. [DOI: 10.1039/c7ra01896g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Pyridinium-5-aminothiazoles exhibited bathochromically shifted absorption and fluorescence spectra, solvatochromism, and a reversible vapochromism specific to halogenated solvents.
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Affiliation(s)
- Kirara Yamaguchi
- Department of Chemistry and Biomolecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Yuki Tsuchiya
- Department of Chemistry and Biomolecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Yohei Miwa
- Department of Chemistry and Biomolecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Shoichi Kutsumizu
- Department of Chemistry and Biomolecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
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28
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Yamaguchi K, Murai T, Guo J, Sasamori T, Tokitoh N. Acid-Responsive Absorption and Emission of 5- N-Arylaminothiazoles: Emission of White Light from a Single Fluorescent Dye and a Lewis Acid. ChemistryOpen 2016; 5:434-438. [PMID: 27777834 PMCID: PMC5062007 DOI: 10.1002/open.201600059] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Indexed: 11/15/2022] Open
Abstract
Solutions of 5-N-arylaminothiazoles containing pyridyl groups exhibited clear halochromism and halofluorism upon addition of Brønsted and Lewis acids. The addition of triflic acid to solutions of 5-N-arylaminothiazoles in Et2O induced bathochromic shifts of the absorption and emission bands. DFT calculations suggested that the spectral changes arise from the protonation of the pyridyl group of the thiazoles in Et2O. Single-crystal X-ray diffraction analysis of a thiazole and its protonated form revealed the change of the conformation around the thiazole ring. The emission of white light was accomplished from a single fluorescent dye by adjusting the ratio of dye and B(C6F5)3, whereby the International Commission on Illumination coordinates showed a linear change from blue to orange.
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Affiliation(s)
- Kirara Yamaguchi
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University, YanagidoGifu501-1193Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University, YanagidoGifu501-1193Japan
| | - Jing‐Dong Guo
- Institute for Chemical ResearchKyoto University, Gokasho UjiKyoto611-0011Japan
| | - Takahiro Sasamori
- Institute for Chemical ResearchKyoto University, Gokasho UjiKyoto611-0011Japan
| | - Norihiro Tokitoh
- Institute for Chemical ResearchKyoto University, Gokasho UjiKyoto611-0011Japan
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29
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Łukasiewicz ŁG, Deperasińska I, Poronik YM, Jun YW, Banasiewicz M, Kozankiewicz B, Ahn KH, Gryko DT. Dipolar Dyes with a Pyrrolo[2,3-b]quinoxaline Skeleton Containing a Cyano Group and a Bridged Tertiary Amino Group: Synthesis, Solvatofluorochromism, and Bioimaging. Chem Asian J 2016; 11:1718-24. [PMID: 27027726 DOI: 10.1002/asia.201600257] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 03/18/2016] [Indexed: 11/07/2022]
Abstract
Two strongly polarized dipolar chromophores possessing a cyclic tertiary amino group at one terminus of the molecule and a CN group at the opposite terminus were designed and synthesized. Their rigid skeleton contains the rarely studied pyrrolo[2,3-b]quinoxaline ring system. The photophysical properties of these regioisomeric dyes were different owing to differing π conjugation between the CN group and the electron-donor moiety. These dipolar molecules showed very intense emission, strong solvatofluorochromism, and sufficient two-photon brightness for bioimaging. One of these regioisomeric dyes, namely, 11-carbonitrile-2,3,4,5,6,7-hexahydro-1H-3a,8,13,13b-tetraazabenzo[b]cyclohepta[1,2,3-jk]fluorene, was successfully utilized in two-photon imaging of mouse organ tissues and showed distinct tissue morphology with high resolution.
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Affiliation(s)
- Łukasz G Łukasiewicz
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Irena Deperasińska
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland
| | - Yevgen M Poronik
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland
| | - Yong Woong Jun
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyungbuk, 37673, Korea
| | - Marzena Banasiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland
| | - Bolesław Kozankiewicz
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668, Warsaw, Poland.
| | - Kyo Han Ahn
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyungbuk, 37673, Korea
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warsaw, Poland.
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30
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Radhakrishnan R, Sreejalekshmi KG. Expanding the donor–acceptor toolbox with a minimal 5-(thiophen-2-yl)-1,3-thiazole core: transition metal-free synthesis and molecular design for HOMO–LUMO energy modulations. NEW J CHEM 2016. [DOI: 10.1039/c6nj00418k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
D–A–D–A tetrads based on a minimal thienylthiazole core are synthesized and HOMO–LUMO energy modulations in designer systems by varying terminal D/A groups demonstrated.
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Affiliation(s)
- Rakesh Radhakrishnan
- Department of Chemistry
- Indian Institute of Space Science and Technology
- Thiruvananthapuram – 695 547
- India
| | - Kumaran G. Sreejalekshmi
- Department of Chemistry
- Indian Institute of Space Science and Technology
- Thiruvananthapuram – 695 547
- India
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