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Síntese de 1-aril-4-[(dimetilamino)metileno] pirrolidino-2,3,5-trionas utilizando irradiação de micro-ondas
(Universidade Federal de Santa Maria, 2011-02-24)
The synthesis of a series of 1-aryl-4-[(dimethylamino)methylene] pyrrolidine-
2,3,5-trione from the cyclocondensation reaction between b-enaminodiketone
[Cl3C(O)C(=CHNMe2)C(O)CO2Et] and aniline derivatives [R = Ph, 3-Me-C6H4, ...
Síntese de β-Calcogenoaminas quirais via abertura regiosseletiva de Aziridinas em Líquidos Iônicos.
(Universidade Federal de Santa Maria, 2011-07-29)
The present work report the synthesis of β-chalcogen amino compounds derived from L-aminoacids. The desired products were obtained in a short reaction time, with high yields using a simple and environmentally friendly ...
Nh-pirazóis e isoxazóis: síntese mecanicamente ativada por grinding
(Universidade Federal de Santa Maria, 2010-07-30)
The synthesis of twelve NH-pyrazoles from the cyclocondensation reaction of β-dimethylaminovinylketones ([R1C(O)C(R2)=CHN(Me)2], where R1 = Me, C6H5, 3-
MeO-C6H4, 4-Me-C6H4, 4-MeO-C6H4, 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, ...
Síntese de 1,1-dimetiletil-1h-pirazóis em líquidos iônicos
(Universidade Federal de Santa Maria, 2010-07-08)
This work describes the synthesis of a series of pyrazoles from enaminoketones (RC(O)CH=CHNMe2 where R = hexyl, dimethoxymethyl, Ph, 4-Me-C6H4 4-F-C6H4, 4-Cl-C6H4, 4-Br-C6H4, 4-O2N-C6H4, thien-2-yl, fur-2-yl, pyrrol-2-yl ...
Produção de ácido levulínico por meio de hidrólise ácida da casca de arroz
(Universidade Federal de Santa Maria, 2010-02-08)
The beginning of the 21st century has been characterized by a great interest about the use of renewable raw materials for the production of industrial feedstocks and technological products. This trend is followed by the ...
Influência da formação de hidroxialuminosilicatos na biodisponibilidade do alumínio
(Universidade Federal de Santa Maria, 2010-02-04)
Solutions for parenteral nutrition may be contaminated by aluminum and silicate due to their storage in containers made of glass and due to the sterilization process (autoclave), which promotes the lixiviation of these ...
Síntese e Análise Estrutural de Complexos de Urânio (VI) e Tório (IV) com Ligantes Relacionados a N,N -bis-piridoxilidenoimina
(Universidade Federal de Santa Maria, 2010-07-16)
This work presents a study related to the synthesis and structural analysis of complexes of uranium (IV) and thorium (IV) with ligands related to N,N -bispiridoxilideneimine. Pyridoxine chlorhydrate and aliphatic and ...
Estudo fotoquímico da ação anti-radicalar de compostos polifenólicos empregando espectrofotometria e HPLC-UV
(Universidade Federal de Santa Maria, 2010-02-22)
The interest in antioxidants has increased considerably in recent years as molecules that reduce lipid peroxidation may minimize or inhibit the oxidative damage caused to DNA, proteins and carbohydrates. Flavonoids, a group ...
Desenvolvimento de metodologia para a determinação de farmácos sintéticos em formulações fitoterápicas emagrecedoras empregando eletroforese capilar
(Universidade Federal de Santa Maria, 2010-02-23)
The adulteration of phytotherapeutic formulations used for weight loss with synthetic pharmaceuticals has been increasing in recent years. The cases of adulteration have been reported in the literature, showing that there ...
Método multirresíduo para determinação de micotoxinas em vinho por UPLC-MS/MS
(Universidade Federal de Santa Maria, 2013-01-08)
A fast multimethod using liquid chromatography tandem mass spectrometry (UPLC-MS/MS) was implemented and optimized to yield a complete determination of 36 mycotoxins in wine samples. Extraction was performed with acetonitrile, ...