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Rezazadeh-Jabalbarezi F, Ranjbar-Karimi R, Atabaki F, Mohammadiannejad K. Site-selective nucleophilic substitution reactions of 2,4,5,6-tetrachloropyrimidine with sulfonamides: Synthesis of novel trichloropyrimidine-arylsulfonamide hybrid derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.133909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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2
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Norman JP, Larson NG, Entz ED, Neufeldt SR. Unconventional Site Selectivity in Palladium-Catalyzed Cross-Couplings of Dichloroheteroarenes under Ligand-Controlled and Ligand-Free Systems. J Org Chem 2022; 87:7414-7421. [PMID: 35584051 DOI: 10.1021/acs.joc.2c00665] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Halides adjacent to nitrogen are conventionally more reactive in Pd-catalyzed cross-couplings of dihalogenated N-heteroarenes. However, a very sterically hindered N-heterocyclic carbene ligand is shown to promote room-temperature cross-coupling at C4 of 2,4-dichloropyridines with high selectivity (∼10:1). This work represents the first highly selective method with a broad scope for C4-coupling of these substrates where selectivity is clearly under ligand control. Under the optimized conditions, diverse substituted 2,4-dichloropyridines and related compounds undergo cross-coupling to form C4-C(sp2) and C4-C(sp3) bonds using organoboron, -zinc, and -magnesium reagents. The synthetic utility of this method is highlighted in multistep syntheses that combine C4-selective cross-coupling with subsequent nucleophilic aromatic substitution reactions. The majority of the products herein (71%) have not been previously reported, emphasizing the ability of this methodology to open up underexplored chemical space. Remarkably, we find that ligand-free "Jeffery" conditions enhance the C4 selectivity of Suzuki coupling by an order of magnitude (>99:1). These ligand-free conditions enable the first C5-selective cross-couplings of 2,5-dichloropyridine and 2,5-dichloropyrimidine.
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Affiliation(s)
- Jacob P Norman
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Nathaniel G Larson
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Emily D Entz
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Sharon R Neufeldt
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
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3
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Cui X, Ma J, Zeng T, Xu J, Li Y, Wang X. Metal-free cascade synthesis of unsymmetrical 2-aminopyrimidines from imidazolate enaminones. RSC Adv 2021; 11:24247-24253. [PMID: 35479033 PMCID: PMC9036825 DOI: 10.1039/d1ra04319f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/05/2021] [Indexed: 01/25/2023] Open
Abstract
A convenient metal-free synthesis of unsymmetrical 2-aminopyrimidines from imidazolate enaminones has been developed. In this procedure, various structural 2-aminopyrimidines, as well as 4,5-dihydroisoxazol-5-ols and pyrazoles were synthesized in moderate to excellent yields. A plausible mechanism was also proposed for the cascade reaction. This method represents an effective strategy towards the synthesis of unsymmetrical 2-aminopyrimidines. A convenient metal-free synthesis of unsymmetrical 2-aminopyrimidines from imidazolate enaminones has been developed.![]()
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Affiliation(s)
- Xue Cui
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
| | - Jianting Ma
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
| | - Tingting Zeng
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
| | - Junyu Xu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
| | - Youbin Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
| | - Xuesong Wang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University Haikou 571199 P. R. China
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4
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Mondal R, Braun JD, Sidhu BK, Nevonen DE, Nemykin VN, Herbert DE. Catalytic Synthesis of Donor-Acceptor-Donor (D-A-D) and Donor-Acceptor-Acceptor (D-A-A) Pyrimidine-Ferrocenes via Acceptorless Dehydrogenative Coupling: Synthesis, Structures, and Electronic Communication. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rajarshi Mondal
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Jason D. Braun
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Baldeep K. Sidhu
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Dustin E. Nevonen
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Victor N. Nemykin
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
- Department of Chemistry, University of Tennessee, 1420 Circle Drive, Knoxville, Tennessee 37996, United States
| | - David E. Herbert
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, R3T 2N2, Canada
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5
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Mondal R, Lozada IB, Stotska O, Herbert DE. Catalytic Synthesis of Luminescent Pyrimidines via Acceptor-less Dehydrogenative Coupling. J Org Chem 2020; 85:13747-13756. [PMID: 33095015 DOI: 10.1021/acs.joc.0c01882] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A simple catalytic synthesis of luminescent pyrimidines from benzamidines and alcohols is reported. These one-pot, acceptor-less dehydrogenative coupling reactions are catalyzed by a ruthenium hydrido chloride complex (1), supported by a chelating P^N ligand (L1) bearing a benzannulated phenanthridine donor arm. The pyrimidines thus produced are emissive in solution, with photoluminescence quantum yields reaching 72%. Details of the catalytic synthesis and characterization of the pyrimidines in both solution and the solid state are reported, along with computational modeling of the emissive excited states of representative examples.
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Affiliation(s)
- Rajarshi Mondal
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - Issiah B Lozada
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - Olha Stotska
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
| | - David E Herbert
- Department of Chemistry and the Manitoba Institute for Materials, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada
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6
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Yuan H, Chen PW, Li MY, Zhang Y, Peng ZW, Liu W, Paton RS, Cao C. Effects of substituents X and Y on the NMR chemical shifts of 2-(4-X phenyl)-5-Y pyrimidines. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127489] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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7
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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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8
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Yuan H, Li MY, Chen CN, Zhang Y, Liu WQ. Substituent effects on the UV absorption energy of 2,5-disubstituted pyrimidines. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3860] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hua Yuan
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Meng-Yang Li
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Chun-Ni Chen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Yan Zhang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
| | - Wan-Qiang Liu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, National Demonstration Center for Experimental Chemical Engineering and Materials, School of Chemistry and Chemical Engineering; Hunan University of Science and Technology; Xiangtan 411201 Hunan Province PR China
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9
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Achelle S, Rodríguez-López J, Guen FRL. Photoluminescence Properties of Aryl-, Arylvinyl-, and Arylethynylpyrimidine Derivatives. ChemistrySelect 2018. [DOI: 10.1002/slct.201702472] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sylvain Achelle
- Univ Rennes, CNRS; Institut des Sciences Chimiques de Rennes -UMR6226, F; 35000 Rennes France
| | - Julián Rodríguez-López
- Facultad de Ciencias y Tecnologías Químicas; Universidad de Castilla-La Mancha; Avda. Camilo José Cela 10 13071 Ciudad Real Spain
| | - Françoise Robin-le Guen
- Univ Rennes, CNRS; Institut des Sciences Chimiques de Rennes -UMR6226, F; 35000 Rennes France
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10
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Snieckus V, J. Tanoury G, Gupta S, A. Melanson J, Selim Hossain M, Vaillancourt L, A. Nugent W. Synthesis of 4-Aryl and Unsymmetrical 4,6-Diarylpyrimidines by the Suzuki-Miyaura Cross-Coupling Reaction. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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Huang Y, Qiu F, Chen D, Shen L, Xu S, Guo D, Su Y, Yan D, Zhu X. Color-Convertible, Unimolecular, Micelle-Based, Activatable Fluorescent Probe for Tumor-Specific Detection and Imaging In Vitro and In Vivo. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1604062. [PMID: 28383175 DOI: 10.1002/smll.201604062] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/16/2017] [Indexed: 06/07/2023]
Abstract
Recent years have witnessed significant progress in molecular probes for cancer diagnosis. However, the conventional molecular probes are designed to be "always-on" by attachment of tumor-targeting ligands, which limits their abilities to diagnose tumors universally due to the variations of targeting efficiency and complex environment in different cancers. Here, it is proposed that a color-convertible, activatable probe is responding to a universal tumor microenvironment for tumor-specific diagnosis without targeting ligands. Based on the significant hallmark of up-regulated hydrogen peroxide (H2 O2 ) in various tumors, a novel unimolecular micelle constructed by boronate coupling of a hydrophobic hyperbranched poly(fluorene-co-2,1,3-benzothiadiazole) core and many hydrophilic poly(ethylene glycol) arms is built as an H2 O2 -activatable fluorescent nanoprobe to delineate tumors from normal tissues through an aggregation-enhanced fluorescence resonance energy transfer strategy. This color-convertible, activatable nanoprobe is obviously blue-fluorescent in various normal cells, but becomes highly green-emissive in various cancer cells. After intravenous injection to tumor-bearing mice, green fluorescent signals are only detected in tumor tissue. These observations are further confirmed by direct in vivo and ex vivo tumor imaging and immunofluorescence analysis. Such a facile and simple methodology without targeting ligands for tumor-specific detection and imaging is worthwhile to further development.
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Affiliation(s)
- Yu Huang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Feng Qiu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
| | - Dong Chen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Lingyue Shen
- Department of Oral Maxillofacial-Head Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhizaoju Road, Shanghai, 200011, China
| | - Shuting Xu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Dongbo Guo
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yue Su
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Deyue Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
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12
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Almond-Thynne J, Blakemore DC, Pryde DC, Spivey AC. Site-selective Suzuki-Miyaura coupling of heteroaryl halides - understanding the trends for pharmaceutically important classes. Chem Sci 2017; 8:40-62. [PMID: 28451148 PMCID: PMC5304707 DOI: 10.1039/c6sc02118b] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 08/04/2016] [Indexed: 12/22/2022] Open
Abstract
Suzuki-Miyaura cross-coupling reactions of heteroaryl polyhalides with aryl boronates are surveyed. Drawing on data from literature sources as well as bespoke searches of Pfizer's global chemistry RKB and CAS Scifinder® databases, the factors that determine the site-selectivity of these reactions are discussed with a view to rationalising the trends found.
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Affiliation(s)
- Joshua Almond-Thynne
- Department of Chemistry , Imperial College London , South Kensington Campus , London , SW& 2AZ , UK .
| | - David C Blakemore
- Pfizer Worldwide Medicinal Chemistry , The Portway Building, Granta Park, Great Abington , Cambridge , CB21 6GS , UK
| | - David C Pryde
- Pfizer Worldwide Medicinal Chemistry , The Portway Building, Granta Park, Great Abington , Cambridge , CB21 6GS , UK
| | - Alan C Spivey
- Department of Chemistry , Imperial College London , South Kensington Campus , London , SW& 2AZ , UK .
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13
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Affiliation(s)
- Sean M. Smith
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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14
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Ramana ANMMV, Betkar R, Ranade P, Mundhe B. CsOH/γ-Al2O3: a heterogeneous reusable basic catalyst for one-pot synthesis of 2-amino-4,6-diaryl pyrimidines. NEW J CHEM 2016. [DOI: 10.1039/c5nj03565a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrimidine derivatives were synthesized in one pot using a novel heterogeneous reusable catalyst, and complete characterization of catalyst was performed.
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Affiliation(s)
| | - Rahul Betkar
- Department of Chemistry
- University of Mumbai
- Santacruz (E)
- India
| | - Prasanna Ranade
- Department of Chemistry
- University of Mumbai
- Santacruz (E)
- India
| | - Balaji Mundhe
- Department of Chemistry
- University of Mumbai
- Santacruz (E)
- India
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Gu ZB, Lin HX, Cui YM, Li MJ, Hao ZS. Synthesis and characterization of 2′,7′-diarylspiro[cyclopentane-1,9′-fluorene] derivatives. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1432-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Moreno-García P, La Rosa A, Kolivoška V, Bermejo D, Hong W, Yoshida K, Baghernejad M, Filippone S, Broekmann P, Wandlowski T, Martín N. Charge Transport in C60-Based Dumbbell-type Molecules: Mechanically Induced Switching between Two Distinct Conductance States. J Am Chem Soc 2015; 137:2318-27. [DOI: 10.1021/ja511271e] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pavel Moreno-García
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Andrea La Rosa
- Departamento
de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, E-28040, Madrid, Spain
| | - Viliam Kolivoška
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
- J. Heyrovský
Institute of Physical Chemistry, AS CR, v.v.i., Dolejškova
3, 18223, Prague
8, Czech Republic
| | - Daniel Bermejo
- Departamento
de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, E-28040, Madrid, Spain
| | - Wenjing Hong
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Koji Yoshida
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Masoud Baghernejad
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Salvatore Filippone
- Departamento
de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, E-28040, Madrid, Spain
| | - Peter Broekmann
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Thomas Wandlowski
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, CH-3012 Bern, Switzerland
| | - Nazario Martín
- Departamento
de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, E-28040, Madrid, Spain
- IMDEA-Nanoscience, Campus Universidad Autónoma, 28049-Madrid, Spain
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2-Substituted vs 4-substituted-9,9′-spirobifluorene host materials for green and blue phosphorescent OLEDs: a structure–property relationship study. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.081] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Golubev PR, Pankova AS, Kuznetsov MA. Transition-Metal-Free Approach to 4-Ethynylpyrimidines via Alkenynones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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19
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Denneval C, Moldovan O, Baudequin C, Achelle S, Baldeck P, Plé N, Darabantu M, Ramondenc Y. Synthesis and Photophysical Properties of Push-Pull Structures Incorporating Diazines as Attracting Part with a Fluorene Core. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300458] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Goswami S, Das AK, Maity S. ‘PET’ vs. ‘push–pull’ induced ICT: a remarkable coumarinyl-appended pyrimidine based naked eye colorimetric and fluorimetric sensor for the detection of Hg2+ ions in aqueous media with test trips. Dalton Trans 2013; 42:16259-63. [DOI: 10.1039/c3dt52252k] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Vurth L, Hadad C, Achelle S, García-Martinez JC, Rodríguez-López J, Stéphan O. Pluronic F-68 nanodots incorporating pyrimidine chromophores. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2652-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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A new colorimetric and fluorescent ratiometric sensor for Hg2+ based on 4-pyren-1-yl-pyrimidine. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.12.071] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Martínez MM, Pérez-Caaveiro C, Peña-López M, Sarandeses LA, Pérez Sestelo J. Synthesis of 4,6-disubstituted 2-(4-morpholinyl)pyrimidines by cross-coupling reactions using triorganoindium compounds. Org Biomol Chem 2012; 10:9045-51. [DOI: 10.1039/c2ob26398j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Malik I, Ahmed Z, Reimann S, Ali I, Villinger A, Langer P. Synthesis and Photophysical Properties of Alkynylated Pyrimidines by Site-Selective Sonogashira Reactions of 2,4,5,6-Tetrachloropyrimidine; First Synthesis of Tetraalkynyl-pyrimidines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001622] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Zafra JL, Casado J, Perepichka II, Perepichka IF, Bryce MR, Ramírez FJ, Navarrete JTL. π-conjugation and charge polarization in fluorene-dibenzothiophene-S,S-dioxide co-oligomers by Raman spectroscopy and quantum chemistry. J Chem Phys 2011; 134:044520. [DOI: 10.1063/1.3526487] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Bushueva AY, Shklyaeva EV, Abashev GG. New conjugated monomers and oligomers derived from chalcones and containing thiophene, pyrrole, and pyrimidine fragments. RUSS J APPL CHEM+ 2010. [DOI: 10.1134/s1070427210080239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Schiemenz GP. The impact of ion pair association upon the 1H NMR spectra of cationic complexes akin to Grubbs catalysts. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2010; 48:261-269. [PMID: 20157902 DOI: 10.1002/mrc.2570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A reconsideration of the (1)H NMR spectra of cationic transition metal complexes exhibiting the features of cyclophanes on the basis of Mislow's classification of topic groups arrives at the conclusion that the spectral changes triggered by chiral counterions reflect an intracationic diastereotopication of enantiotopic protons rather than the existence of pairs of long-lived diastereomeric ion pairs.
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28
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Plé N, Hadad C, Fiol-Petit C, Cornec AS, Dupas G, Ramondenc Y. Rod-Like Conjugated Molecules with Ethynylene Linkage and Pyridazines Moieties: Synthesis and Light Emitting Properties. HETEROCYCLES 2010. [DOI: 10.3987/com-10-11934] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Star-shaped ethynylpyrimidine with long alkoxyl side chains: synthesis, fluorescence and 2D self-assembling. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.169] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Bushueva AY, Shklyaeva EV, Abashev GG. New pyrimidines incorporating thiophene and pyrrole moieties: synthesis and electrochemical polymerization. MENDELEEV COMMUNICATIONS 2009. [DOI: 10.1016/j.mencom.2009.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Tumkevicius S, Dodonova J, Baskirova I, Voitechovicius A. Palladium-catalyzed cross-coupling reaction of 2- and/or 5-substituted 4,6-dichloropyrimidines with arylboronic acids. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.184] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Busch A, Turck A, Plé N. Synthesis and molecular design of 4,8‐diaryl‐ and 4,8‐di(arylethynyl)pyrido[4,3‐
d
]pyrimidines: Potential applications in nonlinear optics. Diazines Part 49. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570450219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexandrine Busch
- Laboratoire de Chimie Organique Fine et Hétérocyclique, UMR 6014 IRCOF‐INSA, B.P. 08, 76131 Mont‐Saint‐Aignan Cedex (France)
| | - Alain Turck
- Laboratoire de Chimie Organique Fine et Hétérocyclique, UMR 6014 IRCOF‐INSA, B.P. 08, 76131 Mont‐Saint‐Aignan Cedex (France)
| | - Nelly Plé
- Laboratoire de Chimie Organique Fine et Hétérocyclique, UMR 6014 IRCOF‐INSA, B.P. 08, 76131 Mont‐Saint‐Aignan Cedex (France)
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33
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Mosquera Á, Riveiros R, Sestelo JP, Sarandeses LA. Cross-Coupling Reactions of Indium Organometallics with 2,5-Dihalopyrimidines: Synthesis of Hyrtinadine A. Org Lett 2008; 10:3745-8. [DOI: 10.1021/ol801393n] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ángeles Mosquera
- Departamento de Química Fundamental, Universidade da Coruña, E-15071 A Coruña, Spain
| | - Ricardo Riveiros
- Departamento de Química Fundamental, Universidade da Coruña, E-15071 A Coruña, Spain
| | - José Pérez Sestelo
- Departamento de Química Fundamental, Universidade da Coruña, E-15071 A Coruña, Spain
| | - Luis A. Sarandeses
- Departamento de Química Fundamental, Universidade da Coruña, E-15071 A Coruña, Spain
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34
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Bevk D, Grošelj U, Meden A, Svete J, Stanovnik B. Synthesis and Transformation of Methyl 2-(6-Hydroxy-2-phenylpyrimidin-4-yl)acetate: Simple Preparation of Pyrimidines with Heterocyclic Substituents. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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van der Pol C, Bryce MR, Wielopolski M, Atienza-Castellanos C, Guldi DM, Filippone S, Martín N. Energy Transfer in Oligofluorene-C60 and C60-Oligofluorene-C60 Donor−Acceptor Conjugates. J Org Chem 2007; 72:6662-71. [PMID: 17691735 DOI: 10.1021/jo070686e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two complementary series of C(60)-(Fl)(n) and C(60)-(Fl)(n)-C60 (Fl = 9,9-dihexylfluorene-2,7-diyl; n = 1-5) derivatives with terminal N-methylfulleropyrrolidine units have been synthesized from CHO-(Fl)(n) and CHO-(Fl)(n)-CHO precursors via 1,3-dipolar cycloaddition reaction of in situ generated azomethine ylides with an excess of C60. In solution electrochemical experiments, these conjugates give rise to amphoteric redox behavior. Three consecutive quasireversible reduction waves have been observed at the expected potentials for the N-methylfulleropyrrolidine cores. For the C(60)-(Fl)(n)-C(60) series, each reduction wave is a two-electron process with no observable interaction between the C(60) units. Two or, in some cases, three oxidation waves--most of them irreversible--are ascribed to the oligofluorene system. These waves are cathodically shifted with an increasing number of fluorene units and anodically shifted by the conjugated terminal aldehyde units, compared to the N-methylfulleropyrrolidine termini. Steady-state and time-resolved photolytic techniques show that an efficient transduction of singlet excited-state energy transfer prevails from the photoexcited oligofluorene to the energy accepting fullerene.
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36
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Robins LI, Carpenter RD, Fettinger JC, Haddadin MJ, Tinti DS, Kurth MJ. Diazocinones: synthesis and conformational analysis. J Org Chem 2007; 71:2480-5. [PMID: 16526800 DOI: 10.1021/jo052577a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
1,2,4,5-Tetrazines (prepared from aryl nitriles) condense with isoxazolylcyclobutanones (prepared from 3-benzenesulfonyl-3-vinylcyclobutanol) in methanolic KOH to give conformationally restricted 6-isoxazol-5-yl-6,7-dihydro-5H-[1,2]diazocin-4-ones. The solution 1H NMR spectra of dihydrodiazocinone 1a with phenyl moieties at C3 and C8 reveal two conformations of the eight-membered heterocycle that are non-interconverting on the NMR time scale at ambient temperature. The kinetics of the conversion process, followed by 1H NMR between 21 and 70 degrees C in DMSO solution, yield an activation energy of approximately 21 kcal/mol relative to the kinetic conformer and show an equilibrated ratio of approximately 5:1 of the thermodynamic to the kinetic conformers. The electronic structure calculations on a model dihydrodiazocinone predict geometries for the two conformations. One of these geometries agrees with the X-ray crystallographic analysis of the thermodynamic conformation of 1a.
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Affiliation(s)
- Lori I Robins
- Department of Chemistry, One Shields Avenue, University of California, Davis, California 95616, USA
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37
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Sun M. Control of structure and photophysical properties by protonation and subsequent intramolecular hydrogen bonding. J Chem Phys 2006; 124:054903. [PMID: 16468914 DOI: 10.1063/1.2145747] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Protonation and subsequent intramolecular hydrogen bonding as methods to control chain structure and tune luminescence in heteroatomic conjugated polymers were reported experimentally [A. P. Monkman et al., J. Am. Chem. Soc. 124, 6049 (2002)]. In this paper, the structure and photophysical properties of the model teraryl compound of phenylene-pyridylene copolymer before and after protonation are theoretically studied with quantum chemistry methods. From the optimized ground states, intramolecular hydrogen bonding to the adjacent oxygen atom in the alkoxy substituent planarizes the backbone of the molecules, and the optimized detailed results of compound 9 before and after protonation, such as the dihedral angles between the central benzene and the two pyridyl rings, the bond lengths, and the bond angles, are consistent with the experimental results. From the results of the calculated excited states, the protonation and subsequent intramolecular hydrogen bonding result in the redshifts of the absorption, the increase of the ionization energy, the increase of the electron affinity, the decrease of the energy difference of the highest occupied molecular orbital and lowest unoccupied molecular orbital, the decrease of the binding gap, and the delocalization of the electron-hole coherence. The photophysical properties of compound 9 before and after protonation are further studied with a three-dimensional real-space analysis method of transition and charge difference densities (study transition dipole moment and charge transfer in the absorption and fluorescence processes) and two-dimensional real-space analysis method of transition density matrices (study the electron-hole coherence and the excitation delocalization). The calculated results show theoretically an insight understanding on the influence of the protonation and subsequent intramolecular hydrogen bonding to chain structure and photophysical properties.
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Affiliation(s)
- Mengtao Sun
- Department of Chemical Physics, Lund University, Lund SE22100, Sweden.
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38
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Wheelhouse RT, Jennings SA, Phillips VA, Pletsas D, Murphy PM, Garbett NC, Chaires JB, Jenkins TC. Design, Synthesis, and Evaluation of Novel Biarylpyrimidines: A New Class of Ligand for Unusual Nucleic Acid Structures. J Med Chem 2006; 49:5187-98. [PMID: 16913707 DOI: 10.1021/jm060315a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Biarylpyrimidines are characterized as selective ligands for higher-order nucleic acid structures. A concise and efficient synthesis has been devised incorporating Suzuki biaryl cross-coupling of dihalopyrimidines. Two ligand series are described based on the parent thioether 4,6-bis[4-[[2-(dimethylamino)ethyl]mercapto]phenyl]pyrimidine (1a) and amide 4,6-bis(4[(2-(dimethylamino)ethyl)carboxamido]phenyl)pyrimidine (2a) compounds. In UV thermal denaturation studies with the poly(dA) x [poly(dT)]2 triplex structure, thioethers showed stabilization of the triplex form (Delta Tm < or = 20 degrees C). In contrast, amides showed duplex stabilization (Delta Tm < or = 15 degrees C) and either negligible stabilization or specific destabilization (Delta Tm = -5 degrees C) of the triplex structure. Full spectra of nucleic acid binding preferences were determined by competition dialysis. The strongest interacting thioether bound preferentially to the poly(dA) x [poly(dT)]2 triplex, K(app) = 1.6 x 10(5) M(-1) (40 x K(app) for CT DNA duplex). In contrast, the strongest binding amide selected the (T2G20T2)4 quadruplex structure, K(app) = 0.31 x 10(5) M(-1) (6.5 x K(app) for CT DNA duplex).
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Affiliation(s)
- Richard T Wheelhouse
- School of Pharmacy, University of Bradford, Bradford, West Yorkshire BD7 1DP, UK.
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39
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Xu J, Chen B. Prediction of glass transition temperatures of OLED materials using topological indices. J Mol Model 2005; 12:24-33. [PMID: 16133086 DOI: 10.1007/s00894-005-0282-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Accepted: 05/13/2005] [Indexed: 11/28/2022]
Abstract
The QSPR study was performed between topological indices and glass transition temperatures (T(g)s) of organic light-emitting diode materials based on a diverse set of 80 compounds. A five-parameter correlation with the squared correlation coefficient R2 = 0.9304 and an average absolute error of 7.7 K was obtained through step-wise multi-linear regression analysis with leave-one-out cross-validation. The new model proposed is predictive and requires only topological indices in the calculations and has the advantage of the relative ease in calculating the descriptors, which makes it easier to apply. The predicted results of the new model are comparable to those of the existing equation by using the Comprehensives Descriptors for Structural and Statistical Analysis approach.
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Affiliation(s)
- Jie Xu
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, People's Republic of China.
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40
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Schröter S, Stock C, Bach T. Regioselective cross-coupling reactions of multiple halogenated nitrogen-, oxygen-, and sulfur-containing heterocycles. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.11.074] [Citation(s) in RCA: 337] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Tavasli M, Bettington S, Bryce MR, Attar HAA, Dias FB, King S, Monkman AP. Oligo(fluorenyl)pyridine ligands and their tris-cyclometalated iridium(iii) complexes: synthesis, photophysical properties and electrophosphorescent devices. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b507990j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Oyston S, Wang C, Perepichka IF, Batsanov AS, Bryce MR, Ahn JH, Petty MC. Enhanced electron injection and efficiency in blended-layer organic light emitting diodes with aluminium cathodes: new 2,5-diaryl-1,3,4-oxadiazole–fluorene hybrids incorporating pyridine units. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b510003h] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Oyston S, Wang C, Hughes G, Batsanov AS, Perepichka IF, Bryce MR, Ahn JH, Pearson C, Petty MC. New 2,5-diaryl-1,3,4-oxadiazole–fluorene hybrids as electron transporting materials for blended-layer organic light emitting diodes. ACTA ACUST UNITED AC 2005. [DOI: 10.1039/b413066a] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Zhao L, Perepichka IF, Türksoy F, Batsanov AS, Beeby A, Findlay KS, Bryce MR. 2,5-Di(aryleneethynyl)pyrazine derivatives: synthesis, structural and optoelectronic properties, and light-emitting device. NEW J CHEM 2004. [DOI: 10.1039/b401867m] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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