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Mostrando ítems 101-110 de 247
Estudos visando a síntese do 2,4,8,12-tetrametilpentadecan-1-ol, possível componente do feromônio sexual de Loxa deducta (Hemiptera: Pentatomidae)
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAPrograma de Pós-Graduação em QuímicaUFMG, 2021-03-23)
Loxa deducta is a true bug of the Pentatomidae family. It is a secondary pest of cultures of grains and trees of the Citrus genus. Privet (Ligustrum lucidum), an exotic species of tree utilized in urban landscape, plays ...
Atividade de compostos porfirínicos como catalisadores na oxidação de carvacrol e como potenciais agentes leishmanicidas
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAPrograma de Pós-Graduação em QuímicaUFMG, 2023-03-20)
Porphyrin compounds are essential for life on Earth and perform diverse biological activities in in vivo systems. Thus, bioinspired synthetic compounds combined with the chemistry of antimony(V) and manganese(III) ions may ...
Preparação e aplicação de ligantes selenoimínicos quirais em alquilações enantiosseletivas
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2005-02-24)
In this work, we describe the synthesis of a new series of chiral-seleno imine 7a-k from amino acids 1. These compounds were used as ligands in palladium-catalyzed asymmetric allylic alkylation of 1,3-diphenyl-2-propenyl ...
Surface properties of cationic polyelectrolytes hydrophobically modified
(Elsevier, 2011)
Poly (N,N-dimethyl-N,N-diallyl ammonium) chloride, a highly hydrophilic polyelectrolyte, was hydrophobically modified and the surface properties of the resulting amphipathic polyelectrolytes were determined. The surface ...
Electrochemical and EPR characterization of 1,4-dihydropyridines. Reactivity towards alkyl radicals
(TAYLOR & FRANCIS LTD, 2003)
This work reports the electrochemical oxidation of a series of three synthesized 4-substituted-1,4-dihydropyridine derivatives in different electrolytic media. Also, an EPR characterization of intermediates and the reactivity ...
Metaloceno Del Grupo 4 Como Posible Catalizador En La Activacion De Co2
(2020)
The reaction between the Cp*Zr-s-IcCl2 mononuclear complex, where s-Ic is 6-diethyl-4,8-dimethyl-1,5-dihydro-s-indacene, and gaseous carbon dioxide, showed, after a few minutes, the presence of carbonyl groups signals ...
Synthesis and electrochemical behavior of single-crystal magnetite nanoparticles
(Amer Chemical Soc, 2008-04-10)
Water-dispersed magnetite nanoparticle synthesis from iron(II) chloride in dimethyl sulfoxide (DMSO)-water solution at different DMSO-water ratios in alkaline medium was reported. TEM and XRD results suggest a single-crystal ...
Synthesis and electrochemical behavior of single-crystal magnetite nanoparticles
(Amer Chemical Soc, 2008-04-10)
Water-dispersed magnetite nanoparticle synthesis from iron(II) chloride in dimethyl sulfoxide (DMSO)-water solution at different DMSO-water ratios in alkaline medium was reported. TEM and XRD results suggest a single-crystal ...
Valorização dos sesquiterpenóides ß-cariofileno e óxido de cariofileno por meio da reação de hidroformilação catalisada por complexos de ródio
(Universidade Federal de Minas GeraisUFMG, 2017-07-27)
Rhodium catalyzed hydroformylation is a convenient method for the synthesis of compounds with properties that make them potentially applicable in fragrances and pharmaceuticals. The hydroformylation of ß -caryophyllene and ...