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Preparação de 1,1,1-trialo-4-metil[fenil]seleno-3-alquen-2-onas como precursores para síntese de 3-trialometil-[3-carboxi] isoselenazóis
(Universidade Federal de Santa Maria, 2002-04-19)
A convenient synthesis of 16 1,1,1-trihalo-4-methyl[phenyl]seleno-3-alken-2-ones [CX3C(O)CH=CR1SeR, where X = Cl, F; R = Me, Ph e R1 = H, Me, Et, n-Pr, iso-Pr, iso-Bu, Ph, 4-F-C6H4 e 4-Cl-C6H4], from the reaction of the ...
Síntese e análise estrutural de compostos supramoleculares de Cd(II) com o ligante 4,6-dimetilpirimidina-2-tiona
(Universidade Federal de Santa Maria, 2004-03)
This dissertation describes the synthesis and analysis of the supramolecular
compounds α- and β-[Cd(DMPYMT-S)2]n, DMPYMT-S = 4,6-dimethylpyrimidine-2-
thione.
The reaction product of cadmium acetate dihydrate with ...
Estudo da interação entre silício e alumínio extraídos do vidro na presença de soluções para nutrição parenteral
(Universidade Federal de Santa Maria, 2003-08)
Silicon is a non-metal essential to the living organisms due to its role
in the tissues and bones. The most important biological forms of silicon are
the amorphous silica and the monomeric silicic acid. Only the ...
Síntese de Tio- e Selenoacrilonitrilas
(Universidade Federal de Santa Maria, 2002-08-26)
In this work three new methodologies were developed, two for the addition of
HX to chalcogenoacetylenes 3 (Methods B and C) and the third on the synthesis of
chalcogenacrylonitriles 2 (Method A). [...]
Combustão iniciada por microondas e determinação em linha de cádmio e chumbo em plantas por espectrometria de absorção atômica com tubo aquecido na chama
(Universidade Federal de Santa Maria, 2007-02-07)
In this work a new procedure is proposed by solid sampling flame furnace atomic absorption spectrometry after microwave induced combustion (MIC-FFAAS). The procedure was applied for the determination of cadmium and lead ...
Estudo da distribuição de selênio em animais experimentais em função da espécie de selênio ingerida e via de administração
(Universidade Federal de Santa Maria, 2006-12-21)
Selenium is an essential micronutrient that plays an important role in many physiological processes. Its clinical significance is related to the action of selenocompounds as adjuvant in
preventing diseases such as cancer ...
Síntese e cristaloquímica de complexos de Hg(II) e Ni(II) com o ligante 1,3-BIS(4-bromofenil)triazenido
(Universidade Federal de Santa Maria, 2006-03-01)
Deprotonated 1,3-Bis(4-bromophenyl)triazene reacts with Hg(CH3COO)2 in methanol yielding [Hg(BrC6H4NNNC6H4Br)2]∞ (1) a triazenide complex polymer of Hg(II). The crystal
structure of (1) reveals one-dimensional infinite ...
Síntese e estudo das interações de 3-(fosfato)- e 3-(fosfonamida)-4,4,4-trifluor-but-1-il-carbamatos de etila com a enzima acetilcolinesterase e síntese de 3-carboxietil- e 3-pirimidin-2-il-2-oxo-6-trifluormetil-[1,2,3]oxatiazinanas
(Universidade Federal de Santa Maria, 2007-03-01)
A series of [3-(phosphate)-4,4,4-trifluoro-but-1-yl]-carbamic acid ethyl ester and [3-(phosphonamide)-4,4,4-trifluoro-but-1-yl]-carbamic acid ethyl ester obtained from the reaction of g-amino alcohols (4,4,4-trifluoro-3- ...
Determinação de espécies de arsênio por LC-ICP-MS
(Universidade Federal de Santa Maria, 2006-07-28)
The development of a method for As speciation in aqueous by-product of pyrolysis process of foliate bituminous is described in the present work. Arsenic species are separated by liquid chromatography (LC) coupled to ...
Síntese e atividade biológica de furan-3-carboxamidas, 3-aminometilenodiidrofuran-2-onas e carbamatos de etila trialometilados
(Universidade Federal de Santa Maria, 2007-03-02)
The present work describes the synthesis of a new series of furan-3-carboxamides and 3-aminomethylenedihydrofuran-2-ones, through the reactions of 3-trichloroacetyl furan or furan-3-carbonyl chloride, and 3-trichloroacet ...