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Dinamismo estrutural e transformação monocristal para monocristal de novas estruturas estendidas de chumbo(II)
(Universidade Federal de Santa Maria, 2016-09-09)
The reaction of 1,4-α,α’-xylenediylbis(phenylphosphinic acid) (H2XBPP) with lead(II) generated two different extended structures: [Pb3(XBPP)3(H2O)] 1 and [Pb5(μ3-O)(XBPP)4(H2O)] 5 depending on the pH employed in the reaction. ...
Energia de interação cátion-ânion de líquidos iônicos dicatiônicos em fase gasosa
(Universidade Federal de Santa Maria, 2016-08-05)
Electrospray ionization mass spectrometry (ESI-MS) with induced collision energy was used to carry out a comprehensive study on the interaction energies between cations and anions of dicationic ionic liquids. The influence ...
Síntese de (5-trifluormetil-1H-pirazol-1-IL)(quinolin-4-IL)metanonas de interesse farmacológico
(Universidade Federal de Santa Maria, 2016-07-22)
A convergent synthesis of a series of 16 new polysubstituted (5-hydroxy-5-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-1-yl)(quinolin-4-yl)methanones, starting from isatin and alky(aryl/heteroaryl) ketones, is described. The ...
N-alquilação regiosseletiva de pirazóis empregando 4-alcóxi(amino)-5-bromo-1,1,1-trifluorpent-3-en-2-onas
(Universidade Federal de Santa Maria, 2016-08-19)
This work presents the synthesis of three new series of nitrogen-heterocycles containing the substituent trifluoromethyl, exploiting the synthetic versatility and regioselectivity of 4-alkoxy-5-bromo-1,1,1-trifluorpent-3-en-2-ones ...
Estudo da casca da raiz da espécie Maytenus ilicifolia Mart. ex Reissek, modificações estruturais do composto β-sitosterol e análises das atividades antimicrobianas
(Universidade Federal de Santa Maria, 2016-08-05)
This dissertation describes the phytochemical study of Maytenus ilicifolia Mart species. ex Reissek belonging to Celastreceae family. Further, structural modification reactions were performed in β-sitosterol compound, in ...
Validação analítica para determinação de clorpirifós e avaliação da eficiência do sistema biobed Brasil
(Universidade Federal de Santa Maria, 2016-05-13)
The storage and handling points of agricultural sprayers on farms are a contamination point source of punctual contamination in case of accidental spills of concentrated pesticide and / or leaks, among others. In order to ...
Síntese e caracterização estrutural de polialetos e compostos zwitteriônicos derivados de diteluretos de diarila
(Universidade Federal de Santa Maria, 2016-06-22)
The present work describes the synthesis and structural elucidation of ten new tellurium halide starting from diaryl ditellurides (aryl group = 2-piridine or N,N-dimethylbenzilamine). The compounds and starting material ...
Investigação de componentes químicos da casca do caule de Luehea divaricata martius (malvaceae) e suas potenciais atividades biológicas
(Universidade Federal de Santa Maria, 2016-06-24)
Luehea divaricata, known as açoita-cavalo , is a Brazilian native species and has few reported in the literature. Phytochemical investigation of the methanolic crude extract and its fractions (acid ethereal, basic ethereal, ...
Síntese de espiro[cromeno[4,3-d]pirimidinas-5,1 -cicloalcano] e 5,6-diidrobenzo[h]quinazolinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2016-02-23)
The present dissertation initially describes new methods for the synthesis of 4-(trifluoromethyl)-5,6-dihydrobenzo[h]quinazolines and 4-(trifluoromethyl)spiro[chromeno[4,3-d]pyrimidines-5,1'-cycloalkane], as new trifluoromethyl ...
Complexos metálicos derivados de ligantes tripodais: Síntese, análise estrutural, aplicação como miméticos da atividade catalítica da superóxido dismutase e avaliação de citotoxidade frente à Caenorhabditis elegans in vivo.
(Universidade Federal de Santa Maria, 2016-02-29)
The proposed dissertation presents the synthesis, characterization and mimetic
application of complexes containing metals cations of the first transition series like CuII, NiII,
MnII and FeIII. As starting materials have ...