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Itens para a visualização no momento 31-40 of 46
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 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). [...]
Síntese estereosseletiva de bis(calcogenetos) vinílicos vicinais
(Universidade Federal de Santa Maria, 2004-03-23)
In this work, we developed a new methodology to prepare vinylic
bis(chalcogenides) 4, of exclusive Z configuration. The reaction involves a
titanium-alkyne complexes and organochalcogen electrophilic species. The
vinylic ...
Síntese e estudo das interações de 3-(fosfato)- e 3-(fosfonamida)-4,4,4-trifluor-but-1-il-carbamatos de etila com a enzima acetilcolinesterase e síntese de 3-carboxietil- e 3-pirimidin-2-il-2-oxo-6-trifluormetil-[1,2,3]oxatiazinanas
(Universidade Federal de Santa Maria, 2007-03-01)
A series of [3-(phosphate)-4,4,4-trifluoro-but-1-yl]-carbamic acid ethyl ester and [3-(phosphonamide)-4,4,4-trifluoro-but-1-yl]-carbamic acid ethyl ester obtained from the reaction of g-amino alcohols (4,4,4-trifluoro-3- ...
Síntese e atividade biológica de furan-3-carboxamidas, 3-aminometilenodiidrofuran-2-onas e carbamatos de etila trialometilados
(Universidade Federal de Santa Maria, 2007-03-02)
The present work describes the synthesis of a new series of furan-3-carboxamides and 3-aminomethylenedihydrofuran-2-ones, through the reactions of 3-trichloroacetyl furan or furan-3-carbonyl chloride, and 3-trichloroacet ...
Síntese e análise estrutural de haletos de organilcalcogênios ( Se e Te ) com estados de oxidação mistos
(Universidade Federal de Santa Maria, 2007-03-22)
This work describes the synthesis and structural analysis of new organochalcogen halides with mixed oxidation states in the same molecule. Studies in the solid state by X-ray diffraction reveal a general tendency to associate ...
Síntese e análise estrutural de novos polímeros de coordenação e compostos moleculares de fosfinatos metálicos
(Universidade Federal de Santa Maria, 2007-12-03)
In this work, the structures of coordination polymers and molecular compounds Cu(II), Hg(II), Pb(II) and Cd(II) with phenylphosphinate or diphenylphosphinate ligands were determined and are discussed. The reaction of ...
Síntese e análise estrutural de novos dihaloorganoteluratos(II) monoaniônicos.
(Universidade Federal de Santa Maria, 2006-02-17)
In this dissertation the synthesis and structural characterization of the new series of monoanionic dihaloorganyltellurates(II) compounds with a general formula (C5H6N)[mesTeX2] is presented. Dimesitylditelluride (mesTe)2 ...
Síntese de 3-arilselenofenos via reações de acoplamento de suzuki entre 3-iodoselenofenos e ácidos borônicos
(Universidade Federal de Santa Maria, 2008-01-25)
Não foi possível inserir o abstract.
Pirazolo[1,5-a]pirimidinas: síntese e bromação
(Universidade Federal de Santa Maria, 2006-01-27)
The synthesis of a series of 2-methyl-7-trichloromethylpyrazolo[1,5-a]pyrimidines from the cyclocondensation reaction of 3-amino-5-methylpyrazole with 1,1,1-trichloro-4- alkoxyalk-3-en-2-ones [CCl3C(O)CH=C(R1)OR where R1 ...