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Avaliação dos efeitos da radiação micro-ondas na atividade heterogênea e estabilidade química de nanopartículas de magnetita em processos oxidativos avançados
(Universidade Federal de Santa Maria, 2020-02-20)
In this research, for the first time, is reported the role of microwave (MW) radiation into
the heterogeneous activation of nano–Fe3O4. Since magnetite has been extensively used as
catalyst in advanced oxidative processes ...
Síntese e reatividade de N-alquinilindóis: preparação de N-alquinilindóis-2-substituídos e calcogenazolo[3,2-a]indóis
(Universidade Federal de Santa Maria, 2020-02-21)
This work reports the preparation of 2-Substituted-N-alkynylindoles 3 (18 examples) with yields that varied from 30 to 90%, via the metalation reaction of N-alkynylindoles 1 followed by the capture of 2-indolyl lithium ...
Síntese de selanil-(hetero)arenos e 3-selanil-4-amino-2H-cromen-2-onas via selenilação promovida por Selectfluor®
(Universidade Federal de Santa Maria, 2021-07-26)
In the present work, two synthetic methodologies were developed to access organochalcogen compounds, from direct selenylation reactions using several (hetero)arenes or 4-amino-2H-chromen-2-ones and diorganyl diselenides ...
Síntese, caracterização, estudo fotofísico de meso-trans-(pentafluorofenil)corróis e avaliação da interação com biomoléculas
(Universidade Federal de Santa Maria, 2021-01-15)
Não foi possível inserir o abstract.
Síntese e estudo supramolecular de bis-ureias trissubstituídas: mecanismos de cristalização
(Universidade Federal de Santa Maria, 2021-05-28)
This work presents the synthesis and molecular and supramolecular study of an unprecedented series of trisubstituted bis-ureas. In all, six molecules were synthesized, in which the substituents were varied and the methylene ...
Síntese de compostos heterocíclicos nitrogenados via reações de ciclização promovidas por espécies eletrofílicas de organocalcogênios: síntese de derivados de azaespiros e pirroloquinolinas
(Universidade Federal de Santa Maria, 2021-07-28)
In the present work, a synthetic route was developed for the preparation of 3- (organochalcogenyl)-azaespiro. The methodology developed involves an ipso cyclization reaction of arylpropynyl amides 1 in the presence of ...
Determinação de cloro, enxofre, cobalto, níquel e vanádio em petróleos após combustão iniciada por micro-ondas em frascos descartáveis
(Universidade Federal de Santa Maria, 2020-11-26)
In this work, sample preparation methods based on microwave-induced combustion in disposable vessel (MIC-DV) for the determination of Cl, S by ICP OES, Co, Ni and V by ICP-MS in petroleum were developed. The main operational ...
Síntese de 1,2,3-triazóis-1,4-dissubstituídos contendo organocalcogênios derivados de 4-(azidometil)-2-fenil-1,3-calcogenazóis via reação de cicloadição 1,3-dipolar
(Universidade Federal de Santa Maria, 2020-10-20)
In this present work, an unprecedented series of 4-((4-((arylchalcogen)methyl)-1H-1,2,3-triazol-1-yl)
methyl)-2-phenylchalcogenazole 20 and 21 was synthesized with interest in the potential biological,
because to the ...
Bis(alquilaril, aril)piridina-2,6-dicarboxiamidas: estrutura molecular, supramolecular e polimorfismo
(Universidade Federal de Santa Maria, 2020-03-02)
This work presents the study of intermolecular interactions and the molecular association process of bis (alkylaryl, aryl) pyridine-2,6-dicarboxamides, where the alkylaryl substitutes are (1) 2,2-diphenylethyl, (2) phenylethyl ...
Síntese, caracterização e avaliação da atividade antimicobacteriana de compostos de coordenação derivados do disseleneto de 2,2’-bis(3-aminopiridina)
(Universidade Federal de Santa Maria, 2020-02-28)
This work describes the synthesis and characterization of seven new
coordination compounds derived from 2,2'-bis-(3-aminopyridine) diselenide
interacting with metal ions of diferent degree of hardness. Among the ...