Buscar
Itens para a visualização no momento 51-57 of 57
Síntese de sulfetos e selenetos oxazolidínicos: catalisadores quirais na adição de dietilzinco ao benzaldeído
(Universidade Federal de Santa Maria, 2002-10-17)
Não foi possível inserir o abstract.
Síntese e análise estrutural de complexos de urânio(VI) com hidrazonas, semicarbazonas e ligantes relacionados
(Universidade Federal de Santa Maria, 2006-10-02)
Uranyl complexes with ligands with oxygen and nitrogen donors have been extensively reviewed and they have aroused interest on account of their high stability, usefulness in selective chemical separations and their formation ...
Síntese de 3H-pirido[2,3-b][1,4]diazepinos trifluormetil substituídos e diazepinonas análogas
(Universidade Federal de Santa Maria, 2006-12-19)
The present research describes new synthetic methodologies for the synthesis of new series of 2-aryl(heteroaryl)-4-trifluoro-4,5-dihydro-3Hpyrido[2,3-b][1,4]diazepin-4-ols and 2-aryl(heteroaryl)-3H-pyrido[2,3-b][1,4]diaz ...
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano
(Universidade Federal de Santa Maria, 2006-02-02)
The present research describes the use of b-alcoxyvynil
trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis ...
Estudo de reações de N-alquilação de pirimidin-2-onas: síntese de novos análogos nucleosídicos modificados
(Universidade Federal de Santa Maria, 2008-01-15)
This work presents a study of the N-alkylation reactions of 4-
(trichloromethyl)pyrimidin-2(1H)-one(2), 5-bromo-4-methoxy-4-(trichloromethyl)-3,4-dihydropyrimidin-2-(1H)-one (7), 4-methoxy-4-(trichloromethyl)-3,4-dihydr ...
Síntese one pot de 1,3,4-oxadiazóis derivados de L-aminoácidos e benzoil-hidrazidas
(Universidade Federal de Santa Maria, 2012-07-20)
In the following work, a range of 1,3,4-oxadiazles 2,5-disubstituted 3 was
prepared, using a one pot approach, from L-amino acids 1(a-e) and 2-benzoylhydrazides,
using POCl3 as dehydrating agent.
The study involved the ...
Síntese de 1,2,4-oxadiazóis derivados de 4-tiazolidinonas e arilamidoximas
(Universidade Federal de Santa Maria, 2012-07-20)
The current work reports the incorporation of 4-thiazolidinones to oxadiazolic
ring by a simple and effective methodology.
Five species of thiazolidinones were synthesized by three component
condensation reaction of ...