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Efeito da topologia molecular no empacotamento cristalino de Pirazolo[1,5-a]pirimidinas
(Universidade Federal de Santa Maria, 2013-02-27)
This study shows the influence of the molecular topology of the crystal of a series of 14 pyrazolo[1,5-a]pyrimidines. The topological data were obtained from X-ray diffraction data and energy stabilization were determined ...
Síntese e análise estrutural de compostos derivados de calcogenolatos metálicos MER (M = HgII, PdII; E = Se, Te; R = aril)
(Universidade Federal de Santa Maria, 2013-01-18)
This work presents a study related to the synthesis and structural
analysis of compounds derivatives from metal chalcogenolates - MER (M = HgII,
PdII; E = Se, Te; R = aryl). In the first step of this work were ...
Influência dos parâmetros reacionais na N-alquilação de 3,5-dimetil-1H-pirazol sob irradiação de micro-ondas
(Universidade Federal de Santa Maria, 2012-02-27)
This work describes the reaction parameters influence in the 3,5-dimethyl-1H-pyrazole N-alkylation under microwave irradiation. The experiments were performed in different conditions with the purpose of verified the influence ...
Síntese de pseudo-peptídeos contendo calcogenonucleosídeos via reações de UGI como potenciais inibidores do SARS-CoV-2
(Universidade Federal de Santa Maria, 2023-03-30)
In this work, a reaction protocol was developed for a new class of pseudo-peptides through multicomponent reactions (MCR) of the Ugi’s four component reaction (U-4CR) type, starting from chalcogenonucleosides. The synthetic ...
Cromatografia líquida com espectrometria de massas para a determinação de ácidos orgânicos e ânions em água separada de emulsões de petróleo
(Universidade Federal de Santa Maria, 2020-03-31)
The main difficulty in relation to the methodology development in crude oil separated water is related to
the high concentration of salts (up to 150 g L-1 of Cl-) of this type of sample, which can cause
interferences in ...
Desenvolvimento de um reator de pirólise aquecido por micro-ondas para produção de bio óleo e bio carvão a partir de biomassa lignocelulósica
(Universidade Federal de Santa Maria, 2023-03-07)
In this work a pyrolysis system heated by microwave radiation was developed with the objective of producing bio oil and bio char using biomass of pine wood residue as raw material. For this purpose, a microwave oven was ...
Produção biotecnológica de exopolissacarídeo por meio de conversão químico-fermentativa de casca de arroz
(Universidade Federal de Santa Maria, 2018-07-13)
The rice husk (RH) conversion in products with industrial and pharmaco-chemical attention aimed to use this raw lignocellulosic material, renewable and abundant in the south of Brazil, mainly at RS state ─ yet with no ...
Similaridade de estruturas supramoleculares em cristais orgânicos: proposta de índices quantitativos
(Universidade Federal de Santa Maria, 2018-06-20)
This investigation reports the proposal of a new method to obtain quantitative indexes of
similarity in crystals, using the supramolecular cluster as study demarcation. A series of
tert-butyl pyrazoles were used as models ...
Conversão biotecnológica de casca de arroz em celulose bacteriana
(Universidade Federal de Santa Maria, 2019-01-25)
The state of Rio Grande do Sul is the major national rice producer and generates each
year large volumes of rice husk (RH) ̶ a left-over biomass with no controlled
destination, composed essentially by lignin, cellulose ...
Síntese e caracterização dos 3-(benzo[c][1,2,5]calcogenodiazol-5- il)-5-(ariletinil)1,2,4-oxadiazóis derivados de (z)-n’- hidroxibenzo[c][1,2,5]calcogenodiazóis-5-carboximidamida e dos ácidos 3-arilpropiólicos
(Universidade Federal de Santa Maria, 2023-05-31)
The importance of heterocycle chemistry has grown in recent years, enabling the
connection among many interdisciplinary areas of science, standing out in synthetic organic
chemistry, mainly in the pharmaceutical area, ...