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Síntese de pirrolocumarinas via nitroestirenos e de novos selenetos derivados da cumarina
(Universidade Federal de Santa Maria, 2017-03-08)
This work describes the synthesis of pyrrolo[3,2-c]coumarins from 4-aminophenylcoumarins and nitrostyrenes (17 examples), which were obtained in yelds between 6 and 76 % in a reaction catalised by PTSA.H2O and under ...
Agrotóxicos em vinho: avaliação do método QuEChERS e da microextração líquido-líquido dispersiva na determinação multirresíduo por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2017-03-10)
The widespread use of pesticides in agriculture has brought many benefits such as, increasing quantity and quality of crops grown. However, there is a concern regarding to the presence of pesticide residues in the consumed ...
Síntese e avaliação biológica de calcogeno-oxadiazóis e calcogenotetrazóis
(Universidade Federal de Santa Maria, 2017-02-24)
This work first describes the synthesis of the starting materials, the 1,2,4- and 1,3,4-oxadiazoles, from arylamidoximes and arylhydrazides derivatives, respectively. These two precursors were previously reacted with the ...
Novos corantes moleculares derivados de sulfetos vinílicos: síntese e propriedades fotofísicas
(Universidade Federal de Santa Maria, 2017)
This thesis describes, initially, the synthesis and photophysical characterization
of new sulfides,sulphoxides and vinyl sulfones based dyes. The compounds in question
were obtained in good yields and good diastereoselectivity ...
Síntese e avaliação farmacológica de 7-amino-espiro[cromeno[4,3-b]quinolina-6,1’-cicloalcanos] e derivados
(Universidade Federal de Santa Maria, 2017)
The present thesis describes the synthesis and pharmacological evaluation of new tacrine structural analogues, as well as N-derivation reactions and C-C and C-N coupling on these compounds. By this way, a series of ...
Avaliação da técnica de extração sortiva em disco rotatório (RDSE) para determinação multirresíduo de agrotóxicos em água por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2017-02-24)
The use of pesticides in agriculture and urban areas has always been associated with advantages and disadvantages. As benefits, the increase of the productivity of crops and the control of vectors that cause diseases can ...
Síntese de partículas submicrométricas de carbonato de cálcio a partir de sais inorgânicos utilizando polímeros lineares como modificadores de cristalização
(Universidade Federal de Santa Maria, 2017)
In this work, we report the synthesis of submicrometer calcium carbonate
particles using the simplest approach of mixing solutions of calcium chloride
and ammonium carbonate inorganic precursors in presence of ...
Síntese e funcionalização de azóis via formação de ligações carbono – carbono e carbono – nitrogênio
(Universidade Federal de Santa Maria, 2017-02-24)
This work describes the synthesis and functionalization of azoles employing different methodologies, based on organometallic catalysis or not. Firstly, we disclose the synthesis tetra-substituted 5-trifluoromethyl pyrazoles ...
Química supramolecular: uma jornada através da cristalização de 1,3,5-tris(pirazolil)benzenos e aminoisoxazóis e gelificação de n-fenilestearamidas
(Universidade Federal de Santa Maria, 2017-03-28)
This work presents the study of intermolecular interactions involved in the formation of molecular crystals and supramolecular gels. The compounds 3-amino-4-halo-5-methylisoxazoles and 1,3,5-Tris(pirazolyl)benzenes were ...
Caracterização química de extratos de plantas medicinais por LC-MS/MS e resposta in vivo da atividade anticonvulsivante da Jatropha gossypiifolia L.
(Universidade Federal de Santa Maria, 2017-08-17)
In this paper, two methods using LC-MS/MS were developed for the chemical
characterization of Amazonian medicinal plants and evaluated the anticonvulsive response in
vivo. An analytical method using LC-APPI-MS/MS with ...