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Reação de β-dimetilaminovinil cetonas com hidroxilamina: regioquímica de formação de 4,5-diidroisoxazóis e de isoxazóis
(Universidade Federal de Santa Maria, 2005-07-28)
The regiochemistry study of the formation of a series of aryl-, heteraryl- and haloalkyl-substituted isoxazoles from the reaction of β-dimethylaminovinyl ketones and
hydroxylamine is reported. The precursors β-imethylaminovinyl ...
Síntese de 2-(1h-pirazol-1-il)-5-(1h-pirazol-1-il-1-carbonil) piridinas
(Universidade Federal de Santa Maria, 2008-02-20)
This work describes the synthesis of a new series of 2-[3-alkyl(aryl/heteroaryl)-5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-pyrazol-1-il]-5-[3-alkyl(aryl/heteroaryl)-5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-pyrazol-1-il-1- ...
Avaliação de arranjos supramoleculares de complexos triazenidos de mercúrio (II) e cobre(II)
(Universidade Federal de Santa Maria, 2007-10-10)
The reaction between deprotonated 1,3-Bis(3-acetylphenyl)triazene and Hg(CH3COO)2 in methanol, yields [Hg(RNNNR)(Py)] (R=3-CH3C(O)C6H4) (1), a triazenide dimeric mononuclear complex of mercury(II). The crystal structure ...
Síntese de 5-hidróxi-3-(1,1-dimetoxietan-2-il)-5-trifluormetil-2-pirazolinas e 3-(1,1-difluoretan-2-il)-1H-pirazóis análogos
(Universidade Federal de Santa Maria, 2008-02-01)
This work describes, at first, the synthesis of 4,6,6-trimethoxy-1,1,1-trifluorohex-3-en-2-one by the acylation reaction of 1,1,3,3-tetramethoxybutane, in 65% yields.
Afterwards, the synthesis of a new series of ...
Estudo da interação do alumínio com o ácido glucônico
(Universidade Federal de Santa Maria, 2005-08-19)
Parenteral solutions are used for patients with complexes diseases, for pre-term infants and surgical patients. The administration of solutions contaminated by aluminium for a long period of time can lead to severe ...
Uso de microondas na síntese de 3-alquil(aril)-5-hidróxi-5-triclorometil-4,5-diidro-1h-pirazol-1-carboxiamida
(Universidade Federal de Santa Maria, 2005-03-01)
A series of 3-alkyl and 3-aryl-5-hydroxy-5-trichloromethyl-4,5-dihydro-1Hpirazoles-1-carboxiamide that possess biological activity they were synthesized, in good yeld, through the cyclocondensation, in microwaves, of ...
Avaliação da atividade antimicrobiana de derivados isoxazóis
(Universidade Federal de Santa Maria, 2005-03-03)
Isoxazoles compounds have been showing a great variety of pharmacological activities. Such activities might be increased by the presence of halomethyl-substitute groups in isoxazoles. This work shows the synthesis of the ...
Síntese, reatividade e atividade antimicrobiana de β-enamino ésteres α-clorados utilizando K-10 e irradiação de microondas
(Universidade Federal de Santa Maria, 2005-12-15)
Enamino carbonylic compounds are important synthetic intermediates used in the synthesis of heterocycles and natural products. Our group of research has been dedicating much of our efforts to the development and implementation ...
Uso de modelos multivariados para a avaliação do valor de dienos em amostras de gasolina de pirólise
(Universidade Federal de Santa Maria, 2005-12-19)
The quality of gasoline may be affected by the presence of several compounds. Among them, the conjugated dienes play an important role due to the fact that their presence is strongly associated with gum formation, which ...
Síntese de 1,7-fenantrolinas e 7-aminoquinolinas trifluormetil substituídas
(Universidade Federal de Santa Maria, 2010-02-26)
This work, at first, describes the synthesis and characterization of new series of (Z,Z)-N,N -bis(oxotrifluoroalkenyl)-1,3-phenylenediamines by the addition/elimination reaction of β-alkoxyvinyl trifluoromethyl ketones ...