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  1 / 10246 MEDLINE  
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[PMID]:29478649
[Au] Autor:Xia Y; Xia L; Liu Y; Yang T; Deng J; Dai H
[Ad] Endereço:College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China; Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, and College of Environ
[Ti] Título:Concurrent catalytic removal of typical volatile organic compound mixtures over Au-Pd/α-MnO nanotubes.
[So] Source:J Environ Sci (China);64:276-288, 2018 Feb.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:α-MnO nanotubes and their supported Au-Pd alloy nanocatalysts were prepared using hydrothermal and polyvinyl alcohol-protected reduction methods, respectively. Their catalytic activity for the oxidation of toluene/m-xylene, acetone/ethyl acetate, acetone/m-xylene and ethyl acetate/m-xylene mixtures was evaluated. It was found that the interaction between Au-Pd alloy nanoparticles and α-MnO nanotubes significantly improved the reactivity of lattice oxygen, and the 0.91wt.% Au Pd/α-MnO nanotube catalyst outperformed the α-MnO nanotube catalyst in the oxidation of toluene, m-xylene, ethyl acetate and acetone. Over the 0.91wt.% Au Pd/α-MnO nanotube catalyst, (i) toluene oxidation was greatly inhibited in the toluene/m-xylene mixture, while m-xylene oxidation was not influenced; (ii) acetone and ethyl acetate oxidation suffered a minor impact in the acetone/ethyl acetate mixture; and (iii) m-xylene oxidation was enhanced whereas the oxidation of the oxygenated VOCs (volatile organic compounds) was suppressed in the acetone/m-xylene or ethyl acetate/m-xylene mixtures. The competitive adsorption of these typical VOCs on the catalyst surface induced an inhibitive effect on their oxidation, and increasing the temperature favored the oxidation of the VOCs. The mixed VOCs could be completely oxidized into CO and H O below 320°C at a space velocity of 40,000mL/(g·hr). The 0.91wt.% Au Pd/α-MnO nanotube catalyst exhibited high catalytic stability as well as good tolerance to water vapor and CO in the oxidation of the VOC mixtures. Thus, the α-MnO nanotube-supported noble metal alloy catalysts hold promise for the efficient elimination of VOC mixtures.
[Mh] Termos MeSH primário: Modelos Químicos
Nanotubos/química
Compostos Orgânicos Voláteis/química
[Mh] Termos MeSH secundário: Catálise
Ouro/química
Compostos de Manganês/química
Óxidos/química
Paládio/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Manganese Compounds); 0 (Oxides); 0 (Volatile Organic Compounds); 5TWQ1V240M (Palladium); 7440-57-5 (Gold); TF219GU161 (manganese dioxide)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180227
[St] Status:MEDLINE


  2 / 10246 MEDLINE  
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[PMID]:29317632
[Au] Autor:Fang G; Li W; Shen X; Perez-Aguilar JM; Chong Y; Gao X; Chai Z; Chen C; Ge C; Zhou R
[Ad] Endereço:School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China.
[Ti] Título:Differential Pd-nanocrystal facets demonstrate distinct antibacterial activity against Gram-positive and Gram-negative bacteria.
[So] Source:Nat Commun;9(1):129, 2018 01 09.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Noble metal-based nanomaterials have shown promise as potential enzyme mimetics, but the facet effect and underlying molecular mechanisms are largely unknown. Herein, with a combined experimental and theoretical approach, we unveil that palladium (Pd) nanocrystals exhibit facet-dependent oxidase and peroxidase-like activities that endow them with excellent antibacterial properties via generation of reactive oxygen species. The antibacterial efficiency of Pd nanocrystals against Gram-positive bacteria is consistent with the extent of their enzyme-like activity, that is {100}-faceted Pd cubes with higher activities kill bacteria more effectively than {111}-faceted Pd octahedrons. Surprisingly, a reverse trend of antibacterial activity is observed against Gram-negative bacteria, with Pd octahedrons displaying stronger penetration into bacterial membranes than Pd nanocubes, thereby exerting higher antibacterial activity than the latter. Our findings provide a deeper understanding of facet-dependent enzyme-like activities and might advance the development of noble metal-based nanomaterials with both enhanced and targeted antibacterial activities.
[Mh] Termos MeSH primário: Antibacterianos/química
Bactérias Gram-Negativas/crescimento & desenvolvimento
Bactérias Gram-Positivas/crescimento & desenvolvimento
Nanopartículas/química
Paládio/química
[Mh] Termos MeSH secundário: Antibacterianos/metabolismo
Antibacterianos/farmacologia
Bactérias Gram-Negativas/efeitos dos fármacos
Bactérias Gram-Positivas/efeitos dos fármacos
Testes de Sensibilidade Microbiana
Microscopia Eletrônica de Transmissão
Nanopartículas/metabolismo
Nanopartículas/ultraestrutura
Oxirredutases/metabolismo
Paládio/metabolismo
Paládio/farmacologia
Peroxidase/metabolismo
Espécies Reativas de Oxigênio/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Reactive Oxygen Species); 5TWQ1V240M (Palladium); EC 1.- (Oxidoreductases); EC 1.11.1.7 (Peroxidase)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180111
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02502-3


  3 / 10246 MEDLINE  
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[PMID]:29311504
[Au] Autor:Konishi H
[Ad] Endereço:School of Pharmaceutical Sciences, University of Shizuoka.
[Ti] Título:Creation of Novel Toxic Gas Surrogates and the Development of Safe and Facile Catalytic Reactions.
[So] Source:Chem Pharm Bull (Tokyo);66(1):1-19, 2018.
[Is] ISSN:1347-5223
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:The use of toxic gas surrogates in organic reactions instead of the gas itself contributes to enhancing the safety, practicality, and efficiency of the reactions involved. Our efforts toward the creation of toxic gas surrogates and the development of a series of catalytic reactions using these surrogates are described. Improvements in substrate scope during the hydroesterification of alkenes using formates facilitated by the Ru-imidazole catalyst system provided the opportunity to discover that phenyl formate is a useful carbon monoxide (CO) surrogate for the generation of CO and phenol under weakly basic conditions. This discovery triggered the development of highly reactive but stable CO surrogates and a variety of Pd-catalyzed carbonylative transformations. N-Formylsaccharin facilitated the use of additional nucleophiles in carbonylation reactions that provided access to a variety of carbonyl compounds. Detailed experimental and theoretical mechanistic studies into the generation of CO from phenyl formate suggest that CO generation proceeds via a concerted E2 α-elimination. Furthermore, a known surrogate of sulfur dioxide was applied for the first time to the selective syntheses of cyclic sulfonamides and sulfinamides, confirming that the surrogate operates as an "S=O" source. Notably, the reactions described herein are scalable and can be performed without the use of external toxic gases and specialized reaction vessels; they are easy and simple to perform and demonstrate enormous potential for industrial application.
[Mh] Termos MeSH primário: Alcenos/química
Monóxido de Carbono/química
Ésteres/síntese química
Paládio/química
[Mh] Termos MeSH secundário: Catálise
Ésteres/química
Estrutura Molecular
Fenóis/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Alkenes); 0 (Esters); 0 (Phenols); 5TWQ1V240M (Palladium); 7U1EE4V452 (Carbon Monoxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180110
[St] Status:MEDLINE
[do] DOI:10.1248/cpb.c17-00795


  4 / 10246 MEDLINE  
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[PMID]:29269259
[Au] Autor:Ali GW; El-Hotaby W; Hemdan B; Abdel-Fattah WI
[Ad] Endereço:Refractories, Ceramics, Building Materials, Dept. Biomaterials Group, Inorganic and Mineral Resources Division, National Research Centre, Egypt. Electronic address: wafaaghareib@gmail.com.
[Ti] Título:Thermosensitive chitosan/phosphate hydrogel-composites fortified with Ag versus Ag@Pd for biomedical applications.
[So] Source:Life Sci;194:185-195, 2018 Feb 01.
[Is] ISSN:1879-0631
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: Thermo-responsive hydrogels are promising biomedical systems as their gelation is triggered by temperature changes. Greenly synthesized noble metallic nanoparticles are a growing research area assessing their potential applications in nanomedicine. MATERIALS AND METHODS: Chitosan/phosphate thermosensitive gels were successfully achieved. The developed composite scaffolds were functionalized with the greenly synthesized Ag or Ag@Pd targeting improved bactericidal activity and biocompatibility performance. The physicochemical characterization was assessed through TGA, DSC, FESEM, HRTEM, XRD and FTIR. Bactericidal activities were tested against gram- positive Staphylococcus aureus and gram-negative Pseudomonas aeruginosa. Their biodegradability upon DMEM immersion was followed up to seven days through measuring ionic concentrations of Ca, P, Ag and Pd successively. KEY FINDINGS: The newly developed phosphatic layers over the scaffold surfaces post-immersion assessed their osteogenic ability. Further, their promising and differentiated bactericidal activities due to the noble metals incorporation were proved. Cytotoxicity assessment demonstrated their high biocompatibility since no toxic effect was recorded. SIGNIFICANCE: Consequently, they can be successfully and directly applied in biomedical and dental surgeries.
[Mh] Termos MeSH primário: Antibacterianos/administração & dosagem
Quitosana/análogos & derivados
Preparações de Ação Retardada/química
Hidrogéis/química
Paládio/administração & dosagem
Prata/administração & dosagem
[Mh] Termos MeSH secundário: Antibacterianos/farmacologia
Bactérias/efeitos dos fármacos
Infecções Bacterianas/tratamento farmacológico
Células Hep G2
Seres Humanos
Células MCF-7
Nanopartículas Metálicas/administração & dosagem
Paládio/farmacologia
Fosfatos/química
Prata/farmacologia
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Delayed-Action Preparations); 0 (Hydrogels); 0 (Phosphates); 3M4G523W1G (Silver); 5TWQ1V240M (Palladium); 9012-76-4 (Chitosan)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171223
[St] Status:MEDLINE


  5 / 10246 MEDLINE  
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[PMID]:29216566
[Au] Autor:Sahin Ö; Özdemir ÜÖ; Seferoglu N; Genc ZK; Kaya K; Aydiner B; Tekin S; Seferoglu Z
[Ad] Endereço:Department of Chemistry, Faculty of Science, Gazi University, Teknikokullar, Ankara 06500, Turkey.
[Ti] Título:New platinum (II) and palladium (II) complexes of coumarin-thiazole Schiff base with a fluorescent chemosensor properties: Synthesis, spectroscopic characterization, X-ray structure determination, in vitro anticancer activity on various human carcinoma cell lines and computational studies.
[So] Source:J Photochem Photobiol B;178:428-439, 2018 Jan.
[Is] ISSN:1873-2682
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:A new coumarin-thiazole based Schiff base (Ligand, L) and its Pd(II), Pt(II) complexes; ([Pd(L) ] and [Pt(L) ]), were synthesized and characterized using spectrophotometric techniques (NMR, IR, UV-vis, LC-MS), magnetic moment, and conductivity measurements. A single crystal X-ray analysis for only L was done. The crystals of L have monoclinic crystal system and P21/c space group. To gain insight into the structure of L and its complexes, we used density functional theory (DFT) method to optimize the molecules. The photophysical properties changes were observed after deprotonation of L with CN via intermolecular charge transfer (ICT). Additionally, as the sensor is a colorimetric and fluorimetric cyanide probe containing active sites such as coumarin-thiazole and imine (CH=N), it showed fast color change from yellow to deep red in the visible region, and yellow fluorescence after CN addition to the imine bond, in DMSO. The reaction mechanisms of L with CN , F and AcO ions were evaluated using H NMR shifts. The results showed that, the reaction of L with CN ion was due to the deprotonation and addition mechanisms at the same time. The anti-cancer activity of L and its Pd(II) and Pt(II) complexes were evaluated in vitro using MTT assay on the human cancer lines MCF-7 (human breast adenocarcinoma), LS174T (human colon carcinoma), and LNCAP (human prostate adenocarcinoma). The anti-cancer effects of L and its complexes, on human cells, were determined by comparing the half maximal inhibitory concentration (IC ) values. The activity results showed that, the Pd(II) complex of L has higher anti-tumor effect than L and its Pt(II) complex against the tested human breast adenocarcinoma (MCF-7), human prostate adenocarcinoma (LNCAP), and human colon carcinoma (LS174T) cell lines.
[Mh] Termos MeSH primário: Complexos de Coordenação/síntese química
Paládio/química
Platina/química
Bases de Schiff/química
[Mh] Termos MeSH secundário: Antineoplásicos/síntese química
Antineoplásicos/química
Antineoplásicos/toxicidade
Linhagem Celular Tumoral
Sobrevivência Celular/efeitos dos fármacos
Complexos de Coordenação/química
Complexos de Coordenação/toxicidade
Cumarínicos/química
Cristalografia por Raios X
Seres Humanos
Ligações de Hidrogênio
Células MCF-7
Espectroscopia de Ressonância Magnética
Magnetismo
Conformação Molecular
Teoria Quântica
Espectrofotometria Ultravioleta
Eletricidade Estática
Tiazóis/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents); 0 (Coordination Complexes); 0 (Coumarins); 0 (Schiff Bases); 0 (Thiazoles); 49DFR088MY (Platinum); 5TWQ1V240M (Palladium); A4VZ22K1WT (coumarin)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180212
[Lr] Data última revisão:
180212
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE


  6 / 10246 MEDLINE  
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[PMID]:27773244
[Au] Autor:Thokchom B; Qiu P; Cui M; Park B; Pandit AB; Khim J
[Ad] Endereço:School of Civil, Environmental and Architectural Engineering, Korea University, 5-ga, Anam-dong, Seongbuk-gu, Seoul 136-701, South Korea.
[Ti] Título:Magnetic Pd@Fe O composite nanostructure as recoverable catalyst for sonoelectrohybrid degradation of Ibuprofen.
[So] Source:Ultrason Sonochem;34:262-272, 2017 01.
[Is] ISSN:1873-2828
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:In the present research, the degradation of an emerging pharmaceutical micro-pollutant, Ibuprofen (IBP) by using Pd@Fe O and a hybrid sono-electrolytical (US/EC) treatment system has been demonstrated for the first time. The magnetically separable nanocomposite, Pd@Fe O catalyst was synthesized following co-precipitation method to enhance the efficiency of US/EC system. The synthesized catalyst showed a strong reusable property even after applying for five times and in all the five cases, 100% degradation of IBP was maintained. It not only enhanced the IBP degradation rate, but also reduced the energy consumption of the system by ∼35%. Its strong magnetization value of 64.27emug made it easily separable. Hence, a comprehensive knowledge on the application of combined energy based US/EC system and magnetically separable multifunctional catalysts for degradation of intractable pollutants like Ibuprofen was achieved, assuring that US/EC can be an effective option for IBP treatment.
[Mh] Termos MeSH primário: Poluentes Ambientais/química
Ibuprofeno/química
Nanopartículas de Magnetita/química
Paládio/química
Ondas Ultrassônicas
[Mh] Termos MeSH secundário: Adsorção
Catálise
Precipitação Química
Eletroquímica
Concentração de Íons de Hidrogênio
Ferro/química
Reciclagem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Environmental Pollutants); 0 (Magnetite Nanoparticles); 5TWQ1V240M (Palladium); E1UOL152H7 (Iron); WK2XYI10QM (Ibuprofen)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180131
[Lr] Data última revisão:
180131
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


  7 / 10246 MEDLINE  
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[PMID]:28466537
[Au] Autor:Zhang YL; Shen WJ; Kuang WT; Guo S; Li YJ; Wang ZH
[Ad] Endereço:State Key Lab of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
[Ti] Título:Serrated Au/Pd Core/Shell Nanowires with Jagged Edges for Boosting Liquid Fuel Electrooxidation.
[So] Source:ChemSusChem;10(11):2375-2379, 2017 06 09.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Integration of 1D, core/shell, and jagged features into one entity may provide a promising avenue for further enhancing catalyst performance. However, designing such unique nanostructures is extremely challenging. Herein, 1D serrated Au/Pd core/shell nanowires (CSNWs) with jagged edges were produced simply by a one-pot, dual-capping-agent-assisted method involving co-reduction, galvanic replacement, directional coalescence of preformed nanoparticles, and site-selective epitaxial growth of Pd. Au/PdCSNWs, compared with the commercially available Pd/C, exhibited enhanced electrocatalytic performance towards liquid fuel oxidation because of the synergistic effect of the electronic structure and low-coordinated jagged edges.
[Mh] Termos MeSH primário: Nanofios/química
Petróleo
[Mh] Termos MeSH secundário: Catálise
Elétrons
Ouro
Oxirredução
Paládio
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Petroleum); 5TWQ1V240M (Palladium); 7440-57-5 (Gold)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:180117
[Lr] Data última revisão:
180117
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170504
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201700602


  8 / 10246 MEDLINE  
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[PMID]:29253017
[Au] Autor:Pandey P; Kunwar S; Sui M; Bastola S; Lee J
[Ad] Endereço:College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul, South Korea.
[Ti] Título:Investigation on the morphological and optical evolution of bimetallic Pd-Ag nanoparticles on sapphire (0001) by the systematic control of composition, annealing temperature and time.
[So] Source:PLoS One;12(12):e0189823, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Multi-metallic alloy nanoparticles (NPs) can offer additional opportunities for modifying the electronic, optical and catalytic properties by the control of composition, configuration and size of individual nanostructures that are consisted of more than single element. In this paper, the fabrication of bimetallic Pd-Ag NPs is systematically demonstrated via the solid state dewetting of bilayer thin films on c-plane sapphire by governing the temperature, time as well as composition. The composition of Pd-Ag bilayer remarkably affects the morphology of alloy nanostructures, in which the higher Ag composition, i.e. Pd0.25Ag0.75, leads to the enhanced dewetting of bilayers whereas the higher Pd composition (Pd0.75Ag0.25) hinders the dewetting. Depending on the annealing temperature, Pd-Ag alloy nanostructures evolve with a series of configurations, i.e. nucleation of voids, porous network, elongated nanoclusters and round alloy NPs. In addition, with the annealing time set, the gradual configuration transformation from the elongated to round alloy NPs as well as size reduction is demonstrated due to the enhanced diffusion and sublimation of Ag atoms. The evolution of various morphology of Pd-Ag nanostructures is described based on the surface diffusion and inter-diffusion of Pd and Ag adatoms along with the Ag sublimation, Rayleigh instability and energy minimization mechanism. The reflectance spectra of bimetallic Pd-Ag nanostructures exhibit various quadrupolar and dipolar resonance peaks, peak shifts and absorption dips owing to the surface plasmon resonance of nanostructures depending on the surface morphology. The intensity of reflectance spectra is gradually decreased along with the surface coverage and NP size evolution. The absorption dips are red-shifted towards the longer wavelength for the larger alloy NPs and vice-versa.
[Mh] Termos MeSH primário: Nanopartículas Metálicas/química
Paládio/química
Prata/química
[Mh] Termos MeSH secundário: Ligas
Óxido de Alumínio/química
Catálise
Difusão
Microscopia de Força Atômica
Microscopia Eletrônica de Varredura
Tamanho da Partícula
Porosidade
Ressonância de Plasmônio de Superfície
Propriedades de Superfície
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alloys); 3M4G523W1G (Silver); 5TWQ1V240M (Palladium); LMI26O6933 (Aluminum Oxide)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180112
[Lr] Data última revisão:
180112
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189823


  9 / 10246 MEDLINE  
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[PMID]:29199221
[Au] Autor:Tsukano C; Suetsugu S; Muto N; Takemoto Y
[Ad] Endereço:Graduate School of Pharmaceutical Sciences, Kyoto University.
[Ti] Título:Synthesis of Tetrahydrobiphenylene via Pd(0)-Catalyzed C(sp )-H Functionalization.
[So] Source:Chem Pharm Bull (Tokyo);65(12):1167-1174, 2017.
[Is] ISSN:1347-5223
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Tetrahydrobiphenylene consists of cyclobutene fused with benzene and cyclohexene rings. In this paper, a direct method for synthesizing tetrahydrobiphenylenes based on a palladium (Pd)(0)-catalyzed C(sp )-H functionalization was investigated. The developed method was applied to the synthesis of several tetrahydrobiphenylenes having an oxygen functionality at the ring juncture. The derivatization of a tetrahydrobiphenylene is also reported.
[Mh] Termos MeSH primário: Derivados de Benzeno/química
Paládio/química
[Mh] Termos MeSH secundário: Derivados de Benzeno/síntese química
Carbono/química
Catálise
Hidrogênio/química
Teoria Quântica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzene Derivatives); 5TWQ1V240M (Palladium); 7440-44-0 (Carbon); 7YNJ3PO35Z (Hydrogen)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180110
[Lr] Data última revisão:
180110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.1248/cpb.c17-00737


  10 / 10246 MEDLINE  
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[PMID]:28460361
[Au] Autor:Zivkovic MD; Rajkovic S; Glisic BD; Draskovic NS; Djuran MI
[Ad] Endereço:University of Kragujevac, Faculty of Science, Department of Chemistry, Radoja Domanovica 12, 34000 Kragujevac, Serbia. Electronic address: mzivkovic@kg.ac.rs.
[Ti] Título:Hydrolysis of the amide bond in histidine- and methionine-containing dipeptides promoted by pyrazine and pyridazine palladium(II)-aqua dimers: Comparative study with platinum(II) analogues.
[So] Source:Bioorg Chem;72:190-198, 2017 06.
[Is] ISSN:1090-2120
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Two dinuclear palladium(II) complexes, [{Pd(en)Cl} (µ-pz)](NO ) and [{Pd(en)Cl} (µ-pydz)](NO ) , have been synthesized and characterized by elemental microanalysis and spectroscopic ( H and C NMR, IR and UV-vis) techniques (en is ethylenediamine; pz is pyrazine and pydz is pyridazine). The square planar geometry of palladium(II) metal centers in these complexes has been predicted by DFT calculations. The chlorido complexes were converted into the corresponding aqua complexes, [{Pd(en)(H O)} (µ-pz)] and [{Pd(en)(H O)} (µ-pydz)] , and their reactions with N-acetylated l-histidylglycine (Ac-l-His-Gly) and l-methionylglycine (Ac-l-Met-Gly) were studied by H NMR spectroscopy. The palladium(II)-aqua complexes and dipeptides were reacted in 1:1 M ratio, and all reactions performed in the pH range 2.0
[Mh] Termos MeSH primário: Amidas/química
Dipeptídeos/química
Histidina/química
Metionina/química
Compostos Organometálicos/química
[Mh] Termos MeSH secundário: Dimerização
Relação Dose-Resposta a Droga
Hidrólise
Estrutura Molecular
Paládio/química
Platina/química
Pirazinas/química
Piridazinas/química
Relação Estrutura-Atividade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Amides); 0 (Dipeptides); 0 (Organometallic Compounds); 0 (Pyrazines); 0 (Pyridazines); 49DFR088MY (Platinum); 4QD397987E (Histidine); 5TWQ1V240M (Palladium); AE28F7PNPL (Methionine)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171214
[Lr] Data última revisão:
171214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE



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