Buscar
Itens para a visualização no momento 651-660 of 905
Síntese de derivados vinílicos e arílicos de compostos heteroaromáticos via reação de acoplamento do tipo Negishi
(Universidade Federal de Santa Maria, 2004)
Não foi possível inserir o abstract.
Síntese e cristaloquímica de triazenidocomplexos com o fragmento ciclometalado N,C²-dimetilbenzilaminapaládio(II)
(Universidade Federal de Santa Maria, 2003-02-24)
Não foi possível inserir o abstract.
Síntese, caracterização e aplicação fotobiológica de 10-{[(piridin-4-il)vinil]fenil}corrol e seus complexos de Pt(II) e Pd(II)
(Universidade Federal de Santa Maria, 2022-09-27)
The purpose of this work was the synthesis of the free-base corrole 5,15-
bis(pentafluorophenyl)-10-{[(pyridin-4-yl)vinyl]phenyl}corrole and its metallic derivatives
containing bipyridine complexes of platinum(II) and ...
Síntese e análise estrutural de complexos de urânio (VI) coordenados aos ligantes hidrocloreto de piridoxina, 4-fenil-semicarbazida e a 2-(2´-hidroxifenil) benzoxazola.
(Universidade Federal de Santa Maria, 2004-02-26)
The synthesis and structural analysis of three new coordination
compounds containing uranium metal are described in this dissertation.
These compositions were synthesized with a mimetic ligand to a biological
structure, ...
Síntese e avaliação anti-SARS-CoV-2 e fotofísica dos 1,10- fenantrolina-4,5-imidazo-benzocalcogenazóis
(Universidade Federal de Santa Maria, 2022-08-29)
In this work, a new serie of 1,10-phenanthroline-4,5-imidazo-benzochalcogenazoles 5a-h/
6a-g obtained through the Debus-Radziszeski condensation was synthesized.
Benzoxazoles and benzothiazoles were previously synthesized ...
Síntese de N-dióxidos derivados de piperazinas e zidovudinas
(Universidade Federal de Santa Maria, 2022-09-30)
Chalcogenonucleosides has been the object on studies because of its biological potential and
their pharmaceutical properties, with prominence antitumor, antiviral and antioxidant
properties. In addition, piperazine ...
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). [...]
2-amino-3-arildiazenil-pirazolo[1,5-a]pirimidinas trifluormetilsubstituídas: síntese, derivatizações e avaliação das propriedades fotofísicas
(Universidade Federal de Santa Maria, 2022-08-19)
This thesis presents the results on the synthesis, structural study, and evaluation of the photophysical
properties of new (E)-5-(alkyl/aryl/heteroaryl)-2-amino-3-(aryldiazenyl)-7-(trifluoromethyl)pyrazolo[1,5-
a]pyrimidine ...
Regioquímica da reação de alquilação entre 4- (trialometil)pirimidin-2(1h)-onas e 5-bromoenonas
(Universidade Federal de Santa Maria, 2022-09-23)
The present thesis reports the reactivity study between 5-bromo-1,1,1,-trifluoro-4-
methoxy(amino)pent-3-en-2-ones (5-bromoenones/enaminones) towards 5- or 6-
substituted 4-(trihalomethyl)pyrimidin-2(1H)-ones. During the ...
Controle regioquímico na síntese de 1-Aril-3(5)-carboxialquil-1H-pirazóis
(Universidade Federal de Santa Maria, 2022-08-26)
The present dissertation reports the development of a methodology for the
regiochemical control in the synthesis of 1-aryl-3(5)-carboxyalkyl-1H-pyrazoles,
through cyclocondensation reactions using 4-alkoxy-1,1,1-trichl ...